dave/openttd
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity
Files
0e2736399ebd83e719bf081d407207e619b3088f
openttd/src/viewport.cpp
belugas 77ee099212 (svn r14104) -Feature: Add a window for waypoints, allowing to view all the trains having the selected waypoint in their orders. 
Changing its name is also supported from the same new window.
Gui based on work done by Satyap, on FS#2025.
2008-08-20 01:29:05 +00:00

2806 lines
83 KiB
C++
Raw Blame History

/* $Id$ */
/** @file viewport.cpp Handling of all viewports.
*
* \verbatim
* The in-game coordinate system looks like this *
* *
* ^ Z *
* | *
* | *
* | *
* | *
* / \ *
* / \ *
* / \ *
* / \ *
* X < > Y *
* \endverbatim
*/
#include "stdafx.h"
#include "openttd.h"
#include "debug.h"
#include "tile_cmd.h"
#include "gui.h"
#include "spritecache.h"
#include "landscape.h"
#include "viewport_func.h"
#include "station_base.h"
#include "town.h"
#include "signs_base.h"
#include "signs_func.h"
#include "waypoint.h"
#include "variables.h"
#include "train.h"
#include "roadveh.h"
#include "vehicle_gui.h"
#include "blitter/factory.hpp"
#include "transparency.h"
#include "strings_func.h"
#include "zoom_func.h"
#include "vehicle_func.h"
#include "player_func.h"
#include "settings_type.h"
#include "station_func.h"
#include "core/alloc_type.hpp"
#include "core/smallvec_type.hpp"
#include "window_func.h"
#include "tilehighlight_func.h"
#include "window_gui.h"
#include "table/sprites.h"
#include "table/strings.h"
PlaceProc *_place_proc;
Point _tile_fract_coords;
ZoomLevel _saved_scrollpos_zoom;
struct StringSpriteToDraw {
uint16 string;
uint16 color;
int32 x;
int32 y;
uint64 params[2];
uint16 width;
};
struct TileSpriteToDraw {
SpriteID image;
SpriteID pal;
const SubSprite *sub; ///< only draw a rectangular part of the sprite
int32 x;
int32 y;
byte z;
};
struct ChildScreenSpriteToDraw {
SpriteID image;
SpriteID pal;
const SubSprite *sub; ///< only draw a rectangular part of the sprite
int32 x;
int32 y;
int next; ///< next child to draw (-1 at the end)
};
struct ParentSpriteToDraw {
SpriteID image; ///< sprite to draw
SpriteID pal; ///< palette to use
const SubSprite *sub; ///< only draw a rectangular part of the sprite
int32 x; ///< screen X coordinate of sprite
int32 y; ///< screen Y coordinate of sprite
int32 left; ///< minimal screen X coordinate of sprite (= x + sprite->x_offs), reference point for child sprites
int32 top; ///< minimal screen Y coordinate of sprite (= y + sprite->y_offs), reference point for child sprites
int32 xmin; ///< minimal world X coordinate of bounding box
int32 xmax; ///< maximal world X coordinate of bounding box
int32 ymin; ///< minimal world Y coordinate of bounding box
int32 ymax; ///< maximal world Y coordinate of bounding box
int zmin; ///< minimal world Z coordinate of bounding box
int zmax; ///< maximal world Z coordinate of bounding box
int first_child; ///< the first child to draw.
bool comparison_done; ///< Used during sprite sorting: true if sprite has been compared with all other sprites
};
/* Enumeration of multi-part foundations */
enum FoundationPart {
FOUNDATION_PART_NONE = 0xFF, ///< Neither foundation nor groundsprite drawn yet.
FOUNDATION_PART_NORMAL = 0, ///< First part (normal foundation or no foundation)
FOUNDATION_PART_HALFTILE = 1, ///< Second part (halftile foundation)
FOUNDATION_PART_END
};
typedef SmallVector<TileSpriteToDraw, 64> TileSpriteToDrawVector;
typedef SmallVector<StringSpriteToDraw, 4> StringSpriteToDrawVector;
typedef SmallVector<ParentSpriteToDraw, 64> ParentSpriteToDrawVector;
typedef SmallVector<ParentSpriteToDraw*, 64> ParentSpriteToSortVector;
typedef SmallVector<ChildScreenSpriteToDraw, 16> ChildScreenSpriteToDrawVector;
struct ViewportDrawer {
DrawPixelInfo dpi;
StringSpriteToDrawVector string_sprites_to_draw;
TileSpriteToDrawVector tile_sprites_to_draw;
ParentSpriteToDrawVector parent_sprites_to_draw;
ParentSpriteToSortVector parent_sprites_to_sort;
ChildScreenSpriteToDrawVector child_screen_sprites_to_draw;
int *last_child;
byte combine_sprites;
int foundation[FOUNDATION_PART_END]; ///< Foundation sprites (index into parent_sprites_to_draw).
FoundationPart foundation_part; ///< Currently active foundation for ground sprite drawing.
int *last_foundation_child[FOUNDATION_PART_END]; ///< Tail of ChildSprite list of the foundations. (index into child_screen_sprites_to_draw)
Point foundation_offset[FOUNDATION_PART_END]; ///< Pixeloffset for ground sprites on the foundations.
};
static ViewportDrawer _vd;
TileHighlightData _thd;
static TileInfo *_cur_ti;
bool _draw_bounding_boxes = false;
static Point MapXYZToViewport(const ViewPort *vp, uint x, uint y, uint z)
{
Point p = RemapCoords(x, y, z);
p.x -= vp->virtual_width / 2;
p.y -= vp->virtual_height / 2;
return p;
}
void DeleteWindowViewport(Window *w)
{
free(w->viewport);
w->viewport = NULL;
}
/**
* Initialize viewport of the window for use.
* @param w Window to use/display the viewport in
* @param x Offset of left edge of viewport with respect to left edge window \a w
* @param y Offset of top edge of viewport with respect to top edge window \a w
* @param width Width of the viewport
* @param height Height of the viewport
* @param follow_flags Flags controlling the viewport.
* - If bit 31 is set, the lower 16 bits are the vehicle that the viewport should follow.
* - If bit 31 is clear, it is a tile position.
* @param zoom Zoomlevel to display
*/
void InitializeWindowViewport(Window *w, int x, int y,
int width, int height, uint32 follow_flags, ZoomLevel zoom)
{
assert(w->viewport == NULL);
ViewportData *vp = CallocT<ViewportData>(1);
vp->left = x + w->left;
vp->top = y + w->top;
vp->width = width;
vp->height = height;
vp->zoom = zoom;
vp->virtual_width = ScaleByZoom(width, zoom);
vp->virtual_height = ScaleByZoom(height, zoom);
Point pt;
if (follow_flags & 0x80000000) {
const Vehicle *veh;
vp->follow_vehicle = (VehicleID)(follow_flags & 0xFFFF);
veh = GetVehicle(vp->follow_vehicle);
pt = MapXYZToViewport(vp, veh->x_pos, veh->y_pos, veh->z_pos);
} else {
uint x = TileX(follow_flags) * TILE_SIZE;
uint y = TileY(follow_flags) * TILE_SIZE;
vp->follow_vehicle = INVALID_VEHICLE;
pt = MapXYZToViewport(vp, x, y, GetSlopeZ(x, y));
}
vp->scrollpos_x = pt.x;
vp->scrollpos_y = pt.y;
vp->dest_scrollpos_x = pt.x;
vp->dest_scrollpos_y = pt.y;
w->viewport = vp;
vp->virtual_left = 0;//pt.x;
vp->virtual_top = 0;//pt.y;
}
static Point _vp_move_offs;
static void DoSetViewportPosition(Window* const *wz, int left, int top, int width, int height)
{
for (; wz != _last_z_window; wz++) {
const Window *w = *wz;
if (left + width > w->left &&
w->left + w->width > left &&
top + height > w->top &&
w->top + w->height > top) {
if (left < w->left) {
DoSetViewportPosition(wz, left, top, w->left - left, height);
DoSetViewportPosition(wz, left + (w->left - left), top, width - (w->left - left), height);
return;
}
if (left + width > w->left + w->width) {
DoSetViewportPosition(wz, left, top, (w->left + w->width - left), height);
DoSetViewportPosition(wz, left + (w->left + w->width - left), top, width - (w->left + w->width - left) , height);
return;
}
if (top < w->top) {
DoSetViewportPosition(wz, left, top, width, (w->top - top));
DoSetViewportPosition(wz, left, top + (w->top - top), width, height - (w->top - top));
return;
}
if (top + height > w->top + w->height) {
DoSetViewportPosition(wz, left, top, width, (w->top + w->height - top));
DoSetViewportPosition(wz, left, top + (w->top + w->height - top), width , height - (w->top + w->height - top));
return;
}
return;
}
}
{
int xo = _vp_move_offs.x;
int yo = _vp_move_offs.y;
if (abs(xo) >= width || abs(yo) >= height) {
/* fully_outside */
RedrawScreenRect(left, top, left + width, top + height);
return;
}
GfxScroll(left, top, width, height, xo, yo);
if (xo > 0) {
RedrawScreenRect(left, top, xo + left, top + height);
left += xo;
width -= xo;
} else if (xo < 0) {
RedrawScreenRect(left+width+xo, top, left+width, top + height);
width += xo;
}
if (yo > 0) {
RedrawScreenRect(left, top, width+left, top + yo);
} else if (yo < 0) {
RedrawScreenRect(left, top + height + yo, width+left, top + height);
}
}
}
static void SetViewportPosition(Window *w, int x, int y)
{
ViewPort *vp = w->viewport;
int old_left = vp->virtual_left;
int old_top = vp->virtual_top;
int i;
int left, top, width, height;
vp->virtual_left = x;
vp->virtual_top = y;
/* viewport is bound to its left top corner, so it must be rounded down (UnScaleByZoomLower)
* else glitch described in FS#1412 will happen (offset by 1 pixel with zoom level > NORMAL)
*/
old_left = UnScaleByZoomLower(old_left, vp->zoom);
old_top = UnScaleByZoomLower(old_top, vp->zoom);
x = UnScaleByZoomLower(x, vp->zoom);
y = UnScaleByZoomLower(y, vp->zoom);
old_left -= x;
old_top -= y;
if (old_top == 0 && old_left == 0) return;
_vp_move_offs.x = old_left;
_vp_move_offs.y = old_top;
left = vp->left;
top = vp->top;
width = vp->width;
height = vp->height;
if (left < 0) {
width += left;
left = 0;
}
i = left + width - _screen.width;
if (i >= 0) width -= i;
if (width > 0) {
if (top < 0) {
height += top;
top = 0;
}
i = top + height - _screen.height;
if (i >= 0) height -= i;
if (height > 0) DoSetViewportPosition(FindWindowZPosition(w) + 1, left, top, width, height);
}
}
/**
* Is a xy position inside the viewport of the window?
* @param w Window to examine its viewport
* @param x X coordinate of the xy position
* @param y Y coordinate of the xy position
* @return Pointer to the viewport if the xy position is in the viewport of the window,
* otherwise \c NULL is returned.
*/
ViewPort *IsPtInWindowViewport(const Window *w, int x, int y)
{
ViewPort *vp = w->viewport;
if (vp != NULL &&
IsInsideMM(x, vp->left, vp->left + vp->width) &&
IsInsideMM(y, vp->top, vp->top + vp->height))
return vp;
return NULL;
}
static Point TranslateXYToTileCoord(const ViewPort *vp, int x, int y)
{
Point pt;
int a,b;
uint z;
if ( (uint)(x -= vp->left) >= (uint)vp->width ||
(uint)(y -= vp->top) >= (uint)vp->height) {
Point pt = {-1, -1};
return pt;
}
x = (ScaleByZoom(x, vp->zoom) + vp->virtual_left) >> 2;
y = (ScaleByZoom(y, vp->zoom) + vp->virtual_top) >> 1;
a = y-x;
b = y+x;
/* we need to move variables in to the valid range, as the
* GetTileZoomCenterWindow() function can call here with invalid x and/or y,
* when the user tries to zoom out along the sides of the map */
a = Clamp(a, 0, (int)(MapMaxX() * TILE_SIZE) - 1);
b = Clamp(b, 0, (int)(MapMaxY() * TILE_SIZE) - 1);
/* (a, b) is the X/Y-world coordinate that belongs to (x,y) if the landscape would be completely flat on height 0.
* Now find the Z-world coordinate by fix point iteration.
* This is a bit tricky because the tile height is non-continuous at foundations.
* The clicked point should be approached from the back, otherwise there are regions that are not clickable.
* (FOUNDATION_HALFTILE_LOWER on SLOPE_STEEP_S hides north halftile completely)
* So give it a z-malus of 4 in the first iterations.
*/
z = 0;
for (int i = 0; i < 5; i++) z = GetSlopeZ(a + max(z, 4u) - 4, b + max(z, 4u) - 4) / 2;
for (uint malus = 3; malus > 0; malus--) z = GetSlopeZ(a + max(z, malus) - malus, b + max(z, malus) - malus) / 2;
for (int i = 0; i < 5; i++) z = GetSlopeZ(a + z, b + z) / 2;
pt.x = a + z;
pt.y = b + z;
return pt;
}
/* When used for zooming, check area below current coordinates (x,y)
* and return the tile of the zoomed out/in position (zoom_x, zoom_y)
* when you just want the tile, make x = zoom_x and y = zoom_y */
static Point GetTileFromScreenXY(int x, int y, int zoom_x, int zoom_y)
{
Window *w;
ViewPort *vp;
Point pt;
if ( (w = FindWindowFromPt(x, y)) != NULL &&
(vp = IsPtInWindowViewport(w, x, y)) != NULL)
return TranslateXYToTileCoord(vp, zoom_x, zoom_y);
pt.y = pt.x = -1;
return pt;
}
Point GetTileBelowCursor()
{
return GetTileFromScreenXY(_cursor.pos.x, _cursor.pos.y, _cursor.pos.x, _cursor.pos.y);
}
Point GetTileZoomCenterWindow(bool in, Window * w)
{
int x, y;
ViewPort *vp = w->viewport;
if (in) {
x = ((_cursor.pos.x - vp->left) >> 1) + (vp->width >> 2);
y = ((_cursor.pos.y - vp->top) >> 1) + (vp->height >> 2);
} else {
x = vp->width - (_cursor.pos.x - vp->left);
y = vp->height - (_cursor.pos.y - vp->top);
}
/* Get the tile below the cursor and center on the zoomed-out center */
return GetTileFromScreenXY(_cursor.pos.x, _cursor.pos.y, x + vp->left, y + vp->top);
}
/** Update the status of the zoom-buttons according to the zoom-level
* of the viewport. This will update their status and invalidate accordingly
* @param w Window pointer to the window that has the zoom buttons
* @param vp pointer to the viewport whose zoom-level the buttons represent
* @param widget_zoom_in widget index for window with zoom-in button
* @param widget_zoom_out widget index for window with zoom-out button */
void HandleZoomMessage(Window *w, const ViewPort *vp, byte widget_zoom_in, byte widget_zoom_out)
{
w->SetWidgetDisabledState(widget_zoom_in, vp->zoom == ZOOM_LVL_MIN);
w->InvalidateWidget(widget_zoom_in);
w->SetWidgetDisabledState(widget_zoom_out, vp->zoom == ZOOM_LVL_MAX);
w->InvalidateWidget(widget_zoom_out);
}
/**
* Draws a ground sprite at a specific world-coordinate.
*
* @param image the image to draw.
* @param pal the provided palette.
* @param x position x of the sprite.
* @param y position y of the sprite.
* @param z position z of the sprite.
* @param sub Only draw a part of the sprite.
*
*/
void DrawGroundSpriteAt(SpriteID image, SpriteID pal, int32 x, int32 y, byte z, const SubSprite *sub)
{
assert((image & SPRITE_MASK) < MAX_SPRITES);
TileSpriteToDraw *ts = _vd.tile_sprites_to_draw.Append();
ts->image = image;
ts->pal = pal;
ts->sub = sub;
ts->x = x;
ts->y = y;
ts->z = z;
}
/**
* Adds a child sprite to the active foundation.
*
* The pixel offset of the sprite relative to the ParentSprite is the sum of the offset passed to OffsetGroundSprite() and extra_offs_?.
*
* @param image the image to draw.
* @param pal the provided palette.
* @param sub Only draw a part of the sprite.
* @param foundation_part Foundation part.
* @param extra_offs_x Pixel X offset for the sprite position.
* @param extra_offs_y Pixel Y offset for the sprite position.
*/
static void AddChildSpriteToFoundation(SpriteID image, SpriteID pal, const SubSprite *sub, FoundationPart foundation_part, int extra_offs_x, int extra_offs_y)
{
assert(IsInsideMM(foundation_part, 0, FOUNDATION_PART_END));
assert(_vd.foundation[foundation_part] != -1);
Point offs = _vd.foundation_offset[foundation_part];
/* Change the active ChildSprite list to the one of the foundation */
int *old_child = _vd.last_child;
_vd.last_child = _vd.last_foundation_child[foundation_part];
AddChildSpriteScreen(image, pal, offs.x + extra_offs_x, offs.y + extra_offs_y, false, sub);
/* Switch back to last ChildSprite list */
_vd.last_child = old_child;
}
/**
* Draws a ground sprite for the current tile.
* If the current tile is drawn on top of a foundation the sprite is added as child sprite to the "foundation"-ParentSprite.
*
* @param image the image to draw.
* @param pal the provided palette.
* @param sub Only draw a part of the sprite.
*/
void DrawGroundSprite(SpriteID image, SpriteID pal, const SubSprite *sub)
{
/* Switch to first foundation part, if no foundation was drawn */
if (_vd.foundation_part == FOUNDATION_PART_NONE) _vd.foundation_part = FOUNDATION_PART_NORMAL;
if (_vd.foundation[_vd.foundation_part] != -1) {
AddChildSpriteToFoundation(image, pal, sub, _vd.foundation_part, 0, 0);
} else {
DrawGroundSpriteAt(image, pal, _cur_ti->x, _cur_ti->y, _cur_ti->z, sub);
}
}
/**
* Called when a foundation has been drawn for the current tile.
* Successive ground sprites for the current tile will be drawn as child sprites of the "foundation"-ParentSprite, not as TileSprites.
*
* @param x sprite x-offset (screen coordinates) of ground sprites relative to the "foundation"-ParentSprite.
* @param y sprite y-offset (screen coordinates) of ground sprites relative to the "foundation"-ParentSprite.
*/
void OffsetGroundSprite(int x, int y)
{
/* Switch to next foundation part */
switch (_vd.foundation_part) {
case FOUNDATION_PART_NONE:
_vd.foundation_part = FOUNDATION_PART_NORMAL;
break;
case FOUNDATION_PART_NORMAL:
_vd.foundation_part = FOUNDATION_PART_HALFTILE;
break;
default: NOT_REACHED();
}
/* _vd.last_child == NULL if foundation sprite was clipped by the viewport bounds */
if (_vd.last_child != NULL) _vd.foundation[_vd.foundation_part] = _vd.parent_sprites_to_draw.Length() - 1;
_vd.foundation_offset[_vd.foundation_part].x = x;
_vd.foundation_offset[_vd.foundation_part].y = y;
_vd.last_foundation_child[_vd.foundation_part] = _vd.last_child;
}
/**
* Adds a child sprite to a parent sprite.
* In contrast to "AddChildSpriteScreen()" the sprite position is in world coordinates
*
* @param image the image to draw.
* @param pal the provided palette.
* @param x position x of the sprite.
* @param y position y of the sprite.
* @param z position z of the sprite.
* @param sub Only draw a part of the sprite.
*/
static void AddCombinedSprite(SpriteID image, SpriteID pal, int x, int y, byte z, const SubSprite *sub)
{
Point pt = RemapCoords(x, y, z);
const Sprite* spr = GetSprite(image & SPRITE_MASK);
if (pt.x + spr->x_offs >= _vd.dpi.left + _vd.dpi.width ||
pt.x + spr->x_offs + spr->width <= _vd.dpi.left ||
pt.y + spr->y_offs >= _vd.dpi.top + _vd.dpi.height ||
pt.y + spr->y_offs + spr->height <= _vd.dpi.top)
return;
const ParentSpriteToDraw *pstd = _vd.parent_sprites_to_draw.End() - 1;
AddChildSpriteScreen(image, pal, pt.x - pstd->left, pt.y - pstd->top, false, sub);
}
/** Draw a (transparent) sprite at given coordinates with a given bounding box.
* The bounding box extends from (x + bb_offset_x, y + bb_offset_y, z + bb_offset_z) to (x + w - 1, y + h - 1, z + dz - 1), both corners included.
* Bounding boxes with bb_offset_x == w or bb_offset_y == h or bb_offset_z == dz are allowed and produce thin slices.
*
* @note Bounding boxes are normally specified with bb_offset_x = bb_offset_y = bb_offset_z = 0. The extent of the bounding box in negative direction is
* defined by the sprite offset in the grf file.
* However if modifying the sprite offsets is not suitable (e.g. when using existing graphics), the bounding box can be tuned by bb_offset.
*
* @pre w >= bb_offset_x, h >= bb_offset_y, dz >= bb_offset_z. Else w, h or dz are ignored.
*
* @param image the image to combine and draw,
* @param pal the provided palette,
* @param x position X (world) of the sprite,
* @param y position Y (world) of the sprite,
* @param w bounding box extent towards positive X (world),
* @param h bounding box extent towards positive Y (world),
* @param dz bounding box extent towards positive Z (world),
* @param z position Z (world) of the sprite,
* @param transparent if true, switch the palette between the provided palette and the transparent palette,
* @param bb_offset_x bounding box extent towards negative X (world),
* @param bb_offset_y bounding box extent towards negative Y (world),
* @param bb_offset_z bounding box extent towards negative Z (world)
* @param sub Only draw a part of the sprite.
*/
void AddSortableSpriteToDraw(SpriteID image, SpriteID pal, int x, int y, int w, int h, int dz, int z, bool transparent, int bb_offset_x, int bb_offset_y, int bb_offset_z, const SubSprite *sub)
{
int32 left, right, top, bottom;
assert((image & SPRITE_MASK) < MAX_SPRITES);
/* make the sprites transparent with the right palette */
if (transparent) {
SetBit(image, PALETTE_MODIFIER_TRANSPARENT);
pal = PALETTE_TO_TRANSPARENT;
}
if (_vd.combine_sprites == 2) {
AddCombinedSprite(image, pal, x, y, z, sub);
return;
}
_vd.last_child = NULL;
Point pt = RemapCoords(x, y, z);
int tmp_left, tmp_top, tmp_x = pt.x, tmp_y = pt.y;
/* Compute screen extents of sprite */
if (image == SPR_EMPTY_BOUNDING_BOX) {
left = tmp_left = RemapCoords(x + w , y + bb_offset_y, z + bb_offset_z).x;
right = RemapCoords(x + bb_offset_x, y + h , z + bb_offset_z).x + 1;
top = tmp_top = RemapCoords(x + bb_offset_x, y + bb_offset_y, z + dz ).y;
bottom = RemapCoords(x + w , y + h , z + bb_offset_z).y + 1;
} else {
const Sprite *spr = GetSprite(image & SPRITE_MASK);
left = tmp_left = (pt.x += spr->x_offs);
right = (pt.x + spr->width );
top = tmp_top = (pt.y += spr->y_offs);
bottom = (pt.y + spr->height);
}
if (_draw_bounding_boxes && (image != SPR_EMPTY_BOUNDING_BOX)) {
/* Compute maximal extents of sprite and it's bounding box */
left = min(left , RemapCoords(x + w , y + bb_offset_y, z + bb_offset_z).x);
right = max(right , RemapCoords(x + bb_offset_x, y + h , z + bb_offset_z).x + 1);
top = min(top , RemapCoords(x + bb_offset_x, y + bb_offset_y, z + dz ).y);
bottom = max(bottom, RemapCoords(x + w , y + h , z + bb_offset_z).y + 1);
}
/* Do not add the sprite to the viewport, if it is outside */
if (left >= _vd.dpi.left + _vd.dpi.width ||
right <= _vd.dpi.left ||
top >= _vd.dpi.top + _vd.dpi.height ||
bottom <= _vd.dpi.top) {
return;
}
ParentSpriteToDraw *ps = _vd.parent_sprites_to_draw.Append();
ps->x = tmp_x;
ps->y = tmp_y;
ps->left = tmp_left;
ps->top = tmp_top;
ps->image = image;
ps->pal = pal;
ps->sub = sub;
ps->xmin = x + bb_offset_x;
ps->xmax = x + max(bb_offset_x, w) - 1;
ps->ymin = y + bb_offset_y;
ps->ymax = y + max(bb_offset_y, h) - 1;
ps->zmin = z + bb_offset_z;
ps->zmax = z + max(bb_offset_z, dz) - 1;
ps->comparison_done = false;
ps->first_child = -1;
_vd.last_child = &ps->first_child;
if (_vd.combine_sprites == 1) _vd.combine_sprites = 2;
}
void StartSpriteCombine()
{
_vd.combine_sprites = 1;
}
void EndSpriteCombine()
{
_vd.combine_sprites = 0;
}
/**
* Add a child sprite to a parent sprite.
*
* @param image the image to draw.
* @param pal the provided palette.
* @param x sprite x-offset (screen coordinates) relative to parent sprite.
* @param y sprite y-offset (screen coordinates) relative to parent sprite.
* @param transparent if true, switch the palette between the provided palette and the transparent palette,
* @param sub Only draw a part of the sprite.
*/
void AddChildSpriteScreen(SpriteID image, SpriteID pal, int x, int y, bool transparent, const SubSprite *sub)
{
assert((image & SPRITE_MASK) < MAX_SPRITES);
/* If the ParentSprite was clipped by the viewport bounds, do not draw the ChildSprites either */
if (_vd.last_child == NULL) return;
/* make the sprites transparent with the right palette */
if (transparent) {
SetBit(image, PALETTE_MODIFIER_TRANSPARENT);
pal = PALETTE_TO_TRANSPARENT;
}
*_vd.last_child = _vd.child_screen_sprites_to_draw.Length();
ChildScreenSpriteToDraw *cs = _vd.child_screen_sprites_to_draw.Append();
cs->image = image;
cs->pal = pal;
cs->sub = sub;
cs->x = x;
cs->y = y;
cs->next = -1;
/* Append the sprite to the active ChildSprite list.
* If the active ParentSprite is a foundation, update last_foundation_child as well.
* Note: ChildSprites of foundations are NOT sequential in the vector, as selection sprites are added at last. */
if (_vd.last_foundation_child[0] == _vd.last_child) _vd.last_foundation_child[0] = &cs->next;
if (_vd.last_foundation_child[1] == _vd.last_child) _vd.last_foundation_child[1] = &cs->next;
_vd.last_child = &cs->next;
}
/* Returns a StringSpriteToDraw */
void AddStringToDraw(int x, int y, StringID string, uint64 params_1, uint64 params_2, uint16 color, uint16 width)
{
StringSpriteToDraw *ss = _vd.string_sprites_to_draw.Append();
ss->string = string;
ss->x = x;
ss->y = y;
ss->params[0] = params_1;
ss->params[1] = params_2;
ss->width = width;
ss->color = color;
}
/**
* Draws sprites between ground sprite and everything above.
*
* The sprite is either drawn as TileSprite or as ChildSprite of the active foundation.
*
* @param image the image to draw.
* @param pal the provided palette.
* @param ti TileInfo Tile that is being drawn
* @param z_offset Z offset relative to the groundsprite. Only used for the sprite position, not for sprite sorting.
* @param foundation_part Foundation part the sprite belongs to.
*/
static void DrawSelectionSprite(SpriteID image, SpriteID pal, const TileInfo *ti, int z_offset, FoundationPart foundation_part)
{
/* FIXME: This is not totally valid for some autorail highlights, that extent over the edges of the tile. */
if (_vd.foundation[foundation_part] == -1) {
/* draw on real ground */
DrawGroundSpriteAt(image, pal, ti->x, ti->y, ti->z + z_offset);
} else {
/* draw on top of foundation */
AddChildSpriteToFoundation(image, pal, NULL, foundation_part, 0, -z_offset);
}
}
/**
* Draws a selection rectangle on a tile.
*
* @param ti TileInfo Tile that is being drawn
* @param pal Palette to apply.
*/
static void DrawTileSelectionRect(const TileInfo *ti, SpriteID pal)
{
SpriteID sel;
if (IsHalftileSlope(ti->tileh)) {
Corner halftile_corner = GetHalftileSlopeCorner(ti->tileh);
SpriteID sel2 = SPR_HALFTILE_SELECTION_FLAT + halftile_corner;
DrawSelectionSprite(sel2, pal, ti, 7 + TILE_HEIGHT, FOUNDATION_PART_HALFTILE);
Corner opposite_corner = OppositeCorner(halftile_corner);
if (IsSteepSlope(ti->tileh)) {
sel = SPR_HALFTILE_SELECTION_DOWN;
} else {
sel = ((ti->tileh & SlopeWithOneCornerRaised(opposite_corner)) != 0 ? SPR_HALFTILE_SELECTION_UP : SPR_HALFTILE_SELECTION_FLAT);
}
sel += opposite_corner;
} else {
sel = SPR_SELECT_TILE + _tileh_to_sprite[ti->tileh];
}
DrawSelectionSprite(sel, pal, ti, 7, FOUNDATION_PART_NORMAL);
}
static bool IsPartOfAutoLine(int px, int py)
{
px -= _thd.selstart.x;
py -= _thd.selstart.y;
if ((_thd.drawstyle & ~HT_DIR_MASK) != HT_LINE) return false;
switch (_thd.drawstyle & HT_DIR_MASK) {
case HT_DIR_X: return py == 0; // x direction
case HT_DIR_Y: return px == 0; // y direction
case HT_DIR_HU: return px == -py || px == -py - 16; // horizontal upper
case HT_DIR_HL: return px == -py || px == -py + 16; // horizontal lower
case HT_DIR_VL: return px == py || px == py + 16; // vertival left
case HT_DIR_VR: return px == py || px == py - 16; // vertical right
default:
NOT_REACHED();
}
}
// [direction][side]
static const HighLightStyle _autorail_type[6][2] = {
{ HT_DIR_X, HT_DIR_X },
{ HT_DIR_Y, HT_DIR_Y },
{ HT_DIR_HU, HT_DIR_HL },
{ HT_DIR_HL, HT_DIR_HU },
{ HT_DIR_VL, HT_DIR_VR },
{ HT_DIR_VR, HT_DIR_VL }
};
#include "table/autorail.h"
/**
* Draws autorail highlights.
*
* @param *ti TileInfo Tile that is being drawn
* @param autorail_type Offset into _AutorailTilehSprite[][]
*/
static void DrawAutorailSelection(const TileInfo *ti, uint autorail_type)
{
SpriteID image;
SpriteID pal;
int offset;
FoundationPart foundation_part = FOUNDATION_PART_NORMAL;
Slope autorail_tileh = RemoveHalftileSlope(ti->tileh);
if (IsHalftileSlope(ti->tileh)) {
static const uint _lower_rail[4] = { 5U, 2U, 4U, 3U };
Corner halftile_corner = GetHalftileSlopeCorner(ti->tileh);
if (autorail_type != _lower_rail[halftile_corner]) {
foundation_part = FOUNDATION_PART_HALFTILE;
/* Here we draw the highlights of the "three-corners-raised"-slope. That looks ok to me. */
autorail_tileh = SlopeWithThreeCornersRaised(OppositeCorner(halftile_corner));
}
}
offset = _AutorailTilehSprite[autorail_tileh][autorail_type];
if (offset >= 0) {
image = SPR_AUTORAIL_BASE + offset;
pal = PAL_NONE;
} else {
image = SPR_AUTORAIL_BASE - offset;
pal = PALETTE_SEL_TILE_RED;
}
DrawSelectionSprite(image, _thd.make_square_red ? PALETTE_SEL_TILE_RED : pal, ti, 7, foundation_part);
}
/**
* Checks if the specified tile is selected and if so draws selection using correct selectionstyle.
* @param *ti TileInfo Tile that is being drawn
*/
static void DrawTileSelection(const TileInfo *ti)
{
/* Draw a red error square? */
bool is_redsq = _thd.redsq != 0 && _thd.redsq == ti->tile;
if (is_redsq) DrawTileSelectionRect(ti, PALETTE_TILE_RED_PULSATING);
/* no selection active? */
if (_thd.drawstyle == 0) return;
/* Inside the inner area? */
if (IsInsideBS(ti->x, _thd.pos.x, _thd.size.x) &&
IsInsideBS(ti->y, _thd.pos.y, _thd.size.y)) {
if (_thd.drawstyle & HT_RECT) {
if (!is_redsq) DrawTileSelectionRect(ti, _thd.make_square_red ? PALETTE_SEL_TILE_RED : PAL_NONE);
} else if (_thd.drawstyle & HT_POINT) {
/* Figure out the Z coordinate for the single dot. */
byte z = 0;
FoundationPart foundation_part = FOUNDATION_PART_NORMAL;
if (ti->tileh & SLOPE_N) {
z += TILE_HEIGHT;
if (RemoveHalftileSlope(ti->tileh) == SLOPE_STEEP_N) z += TILE_HEIGHT;
}
if (IsHalftileSlope(ti->tileh)) {
Corner halftile_corner = GetHalftileSlopeCorner(ti->tileh);
if ((halftile_corner == CORNER_W) || (halftile_corner == CORNER_E)) z += TILE_HEIGHT;
if (halftile_corner != CORNER_S) {
foundation_part = FOUNDATION_PART_HALFTILE;
if (IsSteepSlope(ti->tileh)) z -= TILE_HEIGHT;
}
}
DrawSelectionSprite(_cur_dpi->zoom <= ZOOM_LVL_DETAIL ? SPR_DOT : SPR_DOT_SMALL, PAL_NONE, ti, z, foundation_part);
} else if (_thd.drawstyle & HT_RAIL /*&& _thd.place_mode == VHM_RAIL*/) {
/* autorail highlight piece under cursor */
uint type = _thd.drawstyle & 0xF;
assert(type <= 5);
DrawAutorailSelection(ti, _autorail_type[type][0]);
} else if (IsPartOfAutoLine(ti->x, ti->y)) {
/* autorail highlighting long line */
int dir = _thd.drawstyle & ~0xF0;
uint side;
if (dir < 2) {
side = 0;
} else {
TileIndex start = TileVirtXY(_thd.selstart.x, _thd.selstart.y);
side = Delta(Delta(TileX(start), TileX(ti->tile)), Delta(TileY(start), TileY(ti->tile)));
}
DrawAutorailSelection(ti, _autorail_type[dir][side]);
}
return;
}
/* Check if it's inside the outer area? */
if (!is_redsq && _thd.outersize.x &&
_thd.size.x < _thd.size.x + _thd.outersize.x &&
IsInsideBS(ti->x, _thd.pos.x + _thd.offs.x, _thd.size.x + _thd.outersize.x) &&
IsInsideBS(ti->y, _thd.pos.y + _thd.offs.y, _thd.size.y + _thd.outersize.y)) {
/* Draw a blue rect. */
DrawTileSelectionRect(ti, PALETTE_SEL_TILE_BLUE);
return;
}
}
static void ViewportAddLandscape()
{
int x, y, width, height;
TileInfo ti;
bool direction;
_cur_ti = &ti;
/* Transform into tile coordinates and round to closest full tile */
x = ((_vd.dpi.top >> 1) - (_vd.dpi.left >> 2)) & ~0xF;
y = ((_vd.dpi.top >> 1) + (_vd.dpi.left >> 2) - 0x10) & ~0xF;
/* determine size of area */
{
Point pt = RemapCoords(x, y, 241);
width = (_vd.dpi.left + _vd.dpi.width - pt.x + 95) >> 6;
height = (_vd.dpi.top + _vd.dpi.height - pt.y) >> 5 << 1;
}
assert(width > 0);
assert(height > 0);
direction = false;
do {
int width_cur = width;
int x_cur = x;
int y_cur = y;
do {
TileType tt;
ti.x = x_cur;
ti.y = y_cur;
if (0 <= x_cur && x_cur < (int)MapMaxX() * TILE_SIZE &&
0 <= y_cur && y_cur < (int)MapMaxY() * TILE_SIZE) {
TileIndex tile = TileVirtXY(x_cur, y_cur);
ti.tile = tile;
ti.tileh = GetTileSlope(tile, &ti.z);
tt = GetTileType(tile);
} else {
ti.tileh = SLOPE_FLAT;
ti.tile = 0;
ti.z = 0;
tt = MP_VOID;
}
y_cur += 0x10;
x_cur -= 0x10;
_vd.foundation_part = FOUNDATION_PART_NONE;
_vd.foundation[0] = -1;
_vd.foundation[1] = -1;
_vd.last_foundation_child[0] = NULL;
_vd.last_foundation_child[1] = NULL;
_tile_type_procs[tt]->draw_tile_proc(&ti);
DrawTileSelection(&ti);
} while (--width_cur);
if ((direction ^= 1) != 0) {
y += 0x10;
} else {
x += 0x10;
}
} while (--height);
}
static void ViewportAddTownNames(DrawPixelInfo *dpi)
{
Town *t;
int left, top, right, bottom;
if (!HasBit(_display_opt, DO_SHOW_TOWN_NAMES) || _game_mode == GM_MENU)
return;
left = dpi->left;
top = dpi->top;
right = left + dpi->width;
bottom = top + dpi->height;
switch (dpi->zoom) {
case ZOOM_LVL_NORMAL:
FOR_ALL_TOWNS(t) {
if (bottom > t->sign.top &&
top < t->sign.top + 12 &&
right > t->sign.left &&
left < t->sign.left + t->sign.width_1) {
AddStringToDraw(t->sign.left + 1, t->sign.top + 1,
_settings_client.gui.population_in_label ? STR_TOWN_LABEL_POP : STR_TOWN_LABEL,
t->index, t->population);
}
}
break;
case ZOOM_LVL_OUT_2X:
right += 2;
bottom += 2;
FOR_ALL_TOWNS(t) {
if (bottom > t->sign.top &&
top < t->sign.top + 24 &&
right > t->sign.left &&
left < t->sign.left + t->sign.width_1 * 2) {
AddStringToDraw(t->sign.left + 1, t->sign.top + 1,
_settings_client.gui.population_in_label ? STR_TOWN_LABEL_POP : STR_TOWN_LABEL,
t->index, t->population);
}
}
break;
case ZOOM_LVL_OUT_4X:
case ZOOM_LVL_OUT_8X:
right += ScaleByZoom(1, dpi->zoom);
bottom += ScaleByZoom(1, dpi->zoom) + 1;
FOR_ALL_TOWNS(t) {
if (bottom > t->sign.top &&
top < t->sign.top + ScaleByZoom(12, dpi->zoom) &&
right > t->sign.left &&
left < t->sign.left + ScaleByZoom(t->sign.width_2, dpi->zoom)) {
AddStringToDraw(t->sign.left + 5, t->sign.top + 1, STR_TOWN_LABEL_TINY_BLACK, t->index, 0);
AddStringToDraw(t->sign.left + 1, t->sign.top - 3, STR_TOWN_LABEL_TINY_WHITE, t->index, 0);
}
}
break;
default: NOT_REACHED();
}
}
static void AddStation(const Station *st, StringID str, uint16 width)
{
AddStringToDraw(st->sign.left + 1, st->sign.top + 1, str, st->index, st->facilities, (st->owner == OWNER_NONE || st->facilities == 0) ? 0xE : _player_colors[st->owner], width);
}
static void ViewportAddStationNames(DrawPixelInfo *dpi)
{
int left, top, right, bottom;
const Station *st;
if (!HasBit(_display_opt, DO_SHOW_STATION_NAMES) || _game_mode == GM_MENU)
return;
left = dpi->left;
top = dpi->top;
right = left + dpi->width;
bottom = top + dpi->height;
switch (dpi->zoom) {
case ZOOM_LVL_NORMAL:
FOR_ALL_STATIONS(st) {
if (bottom > st->sign.top &&
top < st->sign.top + 12 &&
right > st->sign.left &&
left < st->sign.left + st->sign.width_1) {
AddStation(st, STR_305C_0, st->sign.width_1);
}
}
break;
case ZOOM_LVL_OUT_2X:
right += 2;
bottom += 2;
FOR_ALL_STATIONS(st) {
if (bottom > st->sign.top &&
top < st->sign.top + 24 &&
right > st->sign.left &&
left < st->sign.left + st->sign.width_1 * 2) {
AddStation(st, STR_305C_0, st->sign.width_1);
}
}
break;
case ZOOM_LVL_OUT_4X:
case ZOOM_LVL_OUT_8X:
right += ScaleByZoom(1, dpi->zoom);
bottom += ScaleByZoom(1, dpi->zoom) + 1;
FOR_ALL_STATIONS(st) {
if (bottom > st->sign.top &&
top < st->sign.top + ScaleByZoom(12, dpi->zoom) &&
right > st->sign.left &&
left < st->sign.left + ScaleByZoom(st->sign.width_2, dpi->zoom)) {
AddStation(st, STR_STATION_SIGN_TINY, st->sign.width_2 | 0x8000);
}
}
break;
default: NOT_REACHED();
}
}
static void AddSign(const Sign *si, StringID str, uint16 width)
{
AddStringToDraw(si->sign.left + 1, si->sign.top + 1, str, si->index, 0, (si->owner == OWNER_NONE) ? 14 : _player_colors[si->owner], width);
}
static void ViewportAddSigns(DrawPixelInfo *dpi)
{
const Sign *si;
int left, top, right, bottom;
/* Signs are turned off or are invisible */
if (!HasBit(_display_opt, DO_SHOW_SIGNS) || IsInvisibilitySet(TO_SIGNS)) return;
left = dpi->left;
top = dpi->top;
right = left + dpi->width;
bottom = top + dpi->height;
switch (dpi->zoom) {
case ZOOM_LVL_NORMAL:
FOR_ALL_SIGNS(si) {
if (bottom > si->sign.top &&
top < si->sign.top + 12 &&
right > si->sign.left &&
left < si->sign.left + si->sign.width_1) {
AddSign(si, STR_2806, si->sign.width_1);
}
}
break;
case ZOOM_LVL_OUT_2X:
right += 2;
bottom += 2;
FOR_ALL_SIGNS(si) {
if (bottom > si->sign.top &&
top < si->sign.top + 24 &&
right > si->sign.left &&
left < si->sign.left + si->sign.width_1 * 2) {
AddSign(si, STR_2806, si->sign.width_1);
}
}
break;
case ZOOM_LVL_OUT_4X:
case ZOOM_LVL_OUT_8X:
right += ScaleByZoom(1, dpi->zoom);
bottom += ScaleByZoom(1, dpi->zoom) + 1;
FOR_ALL_SIGNS(si) {
if (bottom > si->sign.top &&
top < si->sign.top + ScaleByZoom(12, dpi->zoom) &&
right > si->sign.left &&
left < si->sign.left + ScaleByZoom(si->sign.width_2, dpi->zoom)) {
AddSign(si, IsTransparencySet(TO_SIGNS) ? STR_2002_WHITE : STR_2002, si->sign.width_2 | 0x8000);
}
}
break;
default: NOT_REACHED();
}
}
static void AddWaypoint(const Waypoint *wp, StringID str, uint16 width)
{
AddStringToDraw(wp->sign.left + 1, wp->sign.top + 1, str, wp->index, 0, (wp->deleted ? 0xE : 11), width);
}
static void ViewportAddWaypoints(DrawPixelInfo *dpi)
{
const Waypoint *wp;
int left, top, right, bottom;
if (!HasBit(_display_opt, DO_WAYPOINTS))
return;
left = dpi->left;
top = dpi->top;
right = left + dpi->width;
bottom = top + dpi->height;
switch (dpi->zoom) {
case ZOOM_LVL_NORMAL:
FOR_ALL_WAYPOINTS(wp) {
if (bottom > wp->sign.top &&
top < wp->sign.top + 12 &&
right > wp->sign.left &&
left < wp->sign.left + wp->sign.width_1) {
AddWaypoint(wp, STR_WAYPOINT_VIEWPORT, wp->sign.width_1);
}
}
break;
case ZOOM_LVL_OUT_2X:
right += 2;
bottom += 2;
FOR_ALL_WAYPOINTS(wp) {
if (bottom > wp->sign.top &&
top < wp->sign.top + 24 &&
right > wp->sign.left &&
left < wp->sign.left + wp->sign.width_1 * 2) {
AddWaypoint(wp, STR_WAYPOINT_VIEWPORT, wp->sign.width_1);
}
}
break;
case ZOOM_LVL_OUT_4X:
case ZOOM_LVL_OUT_8X:
right += ScaleByZoom(1, dpi->zoom);
bottom += ScaleByZoom(1, dpi->zoom) + 1;
FOR_ALL_WAYPOINTS(wp) {
if (bottom > wp->sign.top &&
top < wp->sign.top + ScaleByZoom(12, dpi->zoom) &&
right > wp->sign.left &&
left < wp->sign.left + ScaleByZoom(wp->sign.width_2, dpi->zoom)) {
AddWaypoint(wp, STR_WAYPOINT_VIEWPORT_TINY, wp->sign.width_2 | 0x8000);
}
}
break;
default: NOT_REACHED();
}
}
void UpdateViewportSignPos(ViewportSign *sign, int left, int top, StringID str)
{
char buffer[128];
uint w;
sign->top = top;
GetString(buffer, str, lastof(buffer));
w = GetStringBoundingBox(buffer).width + 3;
sign->width_1 = w;
sign->left = left - w / 2;
/* zoomed out version */
_cur_fontsize = FS_SMALL;
w = GetStringBoundingBox(buffer).width + 3;
_cur_fontsize = FS_NORMAL;
sign->width_2 = w;
}
static void ViewportDrawTileSprites(const TileSpriteToDrawVector *tstdv)
{
const TileSpriteToDraw *tsend = tstdv->End();
for (const TileSpriteToDraw *ts = tstdv->Begin(); ts != tsend; ++ts) {
Point pt = RemapCoords(ts->x, ts->y, ts->z);
DrawSprite(ts->image, ts->pal, pt.x, pt.y, ts->sub);
}
}
static void ViewportSortParentSprites(ParentSpriteToSortVector *psdv)
{
ParentSpriteToDraw **psdvend = psdv->End();
ParentSpriteToDraw **psd = psdv->Begin();
while (psd != psdvend) {
ParentSpriteToDraw *ps = *psd;
if (ps->comparison_done) {
psd++;
continue;
}
ps->comparison_done = true;
for (ParentSpriteToDraw **psd2 = psd + 1; psd2 != psdvend; psd2++) {
ParentSpriteToDraw *ps2 = *psd2;
if (ps2->comparison_done) continue;
/* Decide which comparator to use, based on whether the bounding
* boxes overlap
*/
if (ps->xmax >= ps2->xmin && ps->xmin <= ps2->xmax && // overlap in X?
ps->ymax >= ps2->ymin && ps->ymin <= ps2->ymax && // overlap in Y?
ps->zmax >= ps2->zmin && ps->zmin <= ps2->zmax) { // overlap in Z?
/* Use X+Y+Z as the sorting order, so sprites closer to the bottom of
* the screen and with higher Z elevation, are drawn in front.
* Here X,Y,Z are the coordinates of the "center of mass" of the sprite,
* i.e. X=(left+right)/2, etc.
* However, since we only care about order, don't actually divide / 2
*/
if (ps->xmin + ps->xmax + ps->ymin + ps->ymax + ps->zmin + ps->zmax <=
ps2->xmin + ps2->xmax + ps2->ymin + ps2->ymax + ps2->zmin + ps2->zmax) {
continue;
}
} else {
/* We only change the order, if it is definite.
* I.e. every single order of X, Y, Z says ps2 is behind ps or they overlap.
* That is: If one partial order says ps behind ps2, do not change the order.
*/
if (ps->xmax < ps2->xmin ||
ps->ymax < ps2->ymin ||
ps->zmax < ps2->zmin) {
continue;
}
}
/* Swap the two sprites ps and ps2 using bubble-sort algorithm. */
ParentSpriteToDraw **psd3 = psd;
do {
ParentSpriteToDraw *temp = *psd3;
*psd3 = ps2;
ps2 = temp;
psd3++;
} while (psd3 <= psd2);
}
}
}
static void ViewportDrawParentSprites(const ParentSpriteToSortVector *psd, const ChildScreenSpriteToDrawVector *csstdv)
{
const ParentSpriteToDraw * const *psd_end = psd->End();
for (const ParentSpriteToDraw * const *it = psd->Begin(); it != psd_end; it++) {
const ParentSpriteToDraw *ps = *it;
if (ps->image != SPR_EMPTY_BOUNDING_BOX) DrawSprite(ps->image, ps->pal, ps->x, ps->y, ps->sub);
int child_idx = ps->first_child;
while (child_idx >= 0) {
const ChildScreenSpriteToDraw *cs = csstdv->Get(child_idx);
child_idx = cs->next;
DrawSprite(cs->image, cs->pal, ps->left + cs->x, ps->top + cs->y, cs->sub);
}
}
}
/**
* Draws the bounding boxes of all ParentSprites
* @param psd Array of ParentSprites
*/
static void ViewportDrawBoundingBoxes(const ParentSpriteToSortVector *psd)
{
const ParentSpriteToDraw * const *psd_end = psd->End();
for (const ParentSpriteToDraw * const *it = psd->Begin(); it != psd_end; it++) {
const ParentSpriteToDraw *ps = *it;
Point pt1 = RemapCoords(ps->xmax + 1, ps->ymax + 1, ps->zmax + 1); // top front corner
Point pt2 = RemapCoords(ps->xmin , ps->ymax + 1, ps->zmax + 1); // top left corner
Point pt3 = RemapCoords(ps->xmax + 1, ps->ymin , ps->zmax + 1); // top right corner
Point pt4 = RemapCoords(ps->xmax + 1, ps->ymax + 1, ps->zmin ); // bottom front corner
DrawBox( pt1.x, pt1.y,
pt2.x - pt1.x, pt2.y - pt1.y,
pt3.x - pt1.x, pt3.y - pt1.y,
pt4.x - pt1.x, pt4.y - pt1.y);
}
}
static void ViewportDrawStrings(DrawPixelInfo *dpi, const StringSpriteToDrawVector *sstdv)
{
DrawPixelInfo dp;
ZoomLevel zoom;
_cur_dpi = &dp;
dp = *dpi;
zoom = dp.zoom;
dp.zoom = ZOOM_LVL_NORMAL;
dp.left = UnScaleByZoom(dp.left, zoom);
dp.top = UnScaleByZoom(dp.top, zoom);
dp.width = UnScaleByZoom(dp.width, zoom);
dp.height = UnScaleByZoom(dp.height, zoom);
const StringSpriteToDraw *ssend = sstdv->End();
for (const StringSpriteToDraw *ss = sstdv->Begin(); ss != ssend; ++ss) {
uint16 colour;
if (ss->width != 0) {
/* Do not draw signs nor station names if they are set invisible */
if (IsInvisibilitySet(TO_SIGNS) && ss->string != STR_2806) continue;
int x = UnScaleByZoom(ss->x, zoom) - 1;
int y = UnScaleByZoom(ss->y, zoom) - 1;
int bottom = y + 11;
int w = ss->width;
if (w & 0x8000) {
w &= ~0x8000;
y--;
bottom -= 6;
w -= 3;
}
/* Draw the rectangle if 'tranparent station signs' is off,
* or if we are drawing a general text sign (STR_2806) */
if (!IsTransparencySet(TO_SIGNS) || ss->string == STR_2806) {
DrawFrameRect(
x, y, x + w, bottom, ss->color,
IsTransparencySet(TO_SIGNS) ? FR_TRANSPARENT : FR_NONE
);
}
}
SetDParam(0, ss->params[0]);
SetDParam(1, ss->params[1]);
/* if we didn't draw a rectangle, or if transparant building is on,
* draw the text in the color the rectangle would have */
if (IsTransparencySet(TO_SIGNS) && ss->string != STR_2806 && ss->width != 0) {
/* Real colors need the IS_PALETTE_COLOR flag
* otherwise colors from _string_colormap are assumed. */
colour = _colour_gradient[ss->color][6] | IS_PALETTE_COLOR;
} else {
colour = TC_BLACK;
}
DrawString(
UnScaleByZoom(ss->x, zoom), UnScaleByZoom(ss->y, zoom) - (ss->width & 0x8000 ? 2 : 0),
ss->string, colour
);
}
}
void ViewportDoDraw(const ViewPort *vp, int left, int top, int right, int bottom)
{
DrawPixelInfo *old_dpi = _cur_dpi;
_cur_dpi = &_vd.dpi;
_vd.dpi.zoom = vp->zoom;
int mask = ScaleByZoom(-1, vp->zoom);
_vd.combine_sprites = 0;
_vd.dpi.width = (right - left) & mask;
_vd.dpi.height = (bottom - top) & mask;
_vd.dpi.left = left & mask;
_vd.dpi.top = top & mask;
_vd.dpi.pitch = old_dpi->pitch;
_vd.last_child = NULL;
int x = UnScaleByZoom(_vd.dpi.left - (vp->virtual_left & mask), vp->zoom) + vp->left;
int y = UnScaleByZoom(_vd.dpi.top - (vp->virtual_top & mask), vp->zoom) + vp->top;
_vd.dpi.dst_ptr = BlitterFactoryBase::GetCurrentBlitter()->MoveTo(old_dpi->dst_ptr, x - old_dpi->left, y - old_dpi->top);
ViewportAddLandscape();
ViewportAddVehicles(&_vd.dpi);
ViewportAddTownNames(&_vd.dpi);
ViewportAddStationNames(&_vd.dpi);
ViewportAddSigns(&_vd.dpi);
ViewportAddWaypoints(&_vd.dpi);
DrawTextEffects(&_vd.dpi);
if (_vd.tile_sprites_to_draw.Length() != 0) ViewportDrawTileSprites(&_vd.tile_sprites_to_draw);
ParentSpriteToDraw *psd_end = _vd.parent_sprites_to_draw.End();
for (ParentSpriteToDraw *it = _vd.parent_sprites_to_draw.Begin(); it != psd_end; it++) {
*_vd.parent_sprites_to_sort.Append() = it;
}
ViewportSortParentSprites(&_vd.parent_sprites_to_sort);
ViewportDrawParentSprites(&_vd.parent_sprites_to_sort, &_vd.child_screen_sprites_to_draw);
if (_draw_bounding_boxes) ViewportDrawBoundingBoxes(&_vd.parent_sprites_to_sort);
if (_vd.string_sprites_to_draw.Length() != 0) ViewportDrawStrings(&_vd.dpi, &_vd.string_sprites_to_draw);
_cur_dpi = old_dpi;
_vd.string_sprites_to_draw.Clear();
_vd.tile_sprites_to_draw.Clear();
_vd.parent_sprites_to_draw.Clear();
_vd.parent_sprites_to_sort.Clear();
_vd.child_screen_sprites_to_draw.Clear();
}
/** Make sure we don't draw a too big area at a time.
* If we do, the sprite memory will overflow. */
static void ViewportDrawChk(const ViewPort *vp, int left, int top, int right, int bottom)
{
if (ScaleByZoom(bottom - top, vp->zoom) * ScaleByZoom(right - left, vp->zoom) > 180000) {
if ((bottom - top) > (right - left)) {
int t = (top + bottom) >> 1;
ViewportDrawChk(vp, left, top, right, t);
ViewportDrawChk(vp, left, t, right, bottom);
} else {
int t = (left + right) >> 1;
ViewportDrawChk(vp, left, top, t, bottom);
ViewportDrawChk(vp, t, top, right, bottom);
}
} else {
ViewportDoDraw(vp,
ScaleByZoom(left - vp->left, vp->zoom) + vp->virtual_left,
ScaleByZoom(top - vp->top, vp->zoom) + vp->virtual_top,
ScaleByZoom(right - vp->left, vp->zoom) + vp->virtual_left,
ScaleByZoom(bottom - vp->top, vp->zoom) + vp->virtual_top
);
}
}
static inline void ViewportDraw(const ViewPort *vp, int left, int top, int right, int bottom)
{
if (right <= vp->left || bottom <= vp->top) return;
if (left >= vp->left + vp->width) return;
if (left < vp->left) left = vp->left;
if (right > vp->left + vp->width) right = vp->left + vp->width;
if (top >= vp->top + vp->height) return;
if (top < vp->top) top = vp->top;
if (bottom > vp->top + vp->height) bottom = vp->top + vp->height;
ViewportDrawChk(vp, left, top, right, bottom);
}
void Window::DrawViewport() const
{
DrawPixelInfo *dpi = _cur_dpi;
dpi->left += this->left;
dpi->top += this->top;
ViewportDraw(this->viewport, dpi->left, dpi->top, dpi->left + dpi->width, dpi->top + dpi->height);
dpi->left -= this->left;
dpi->top -= this->top;
}
static inline void ClampViewportToMap(const ViewPort *vp, int &x, int &y)
{
/* Centre of the viewport is hot spot */
x += vp->virtual_width / 2;
y += vp->virtual_height / 2;
/* Convert viewport coordinates to map coordinates
* Calculation is scaled by 4 to avoid rounding errors */
int vx = -x + y * 2;
int vy = x + y * 2;
/* clamp to size of map */
vx = Clamp(vx, 0, MapMaxX() * TILE_SIZE * 4);
vy = Clamp(vy, 0, MapMaxY() * TILE_SIZE * 4);
/* Convert map coordinates to viewport coordinates */
x = (-vx + vy) / 2;
y = ( vx + vy) / 4;
/* Remove centreing */
x -= vp->virtual_width / 2;
y -= vp->virtual_height / 2;
}
void UpdateViewportPosition(Window *w)
{
const ViewPort *vp = w->viewport;
if (w->viewport->follow_vehicle != INVALID_VEHICLE) {
const Vehicle* veh = GetVehicle(w->viewport->follow_vehicle);
Point pt = MapXYZToViewport(vp, veh->x_pos, veh->y_pos, veh->z_pos);
SetViewportPosition(w, pt.x, pt.y);
} else {
/* Ensure the destination location is within the map */
ClampViewportToMap(vp, w->viewport->dest_scrollpos_x, w->viewport->dest_scrollpos_y);
int delta_x = w->viewport->dest_scrollpos_x - w->viewport->scrollpos_x;
int delta_y = w->viewport->dest_scrollpos_y - w->viewport->scrollpos_y;
if (delta_x != 0 || delta_y != 0) {
if (_settings_client.gui.smooth_scroll) {
int max_scroll = ScaleByMapSize1D(512);
/* Not at our desired positon yet... */
w->viewport->scrollpos_x += Clamp(delta_x / 4, -max_scroll, max_scroll);
w->viewport->scrollpos_y += Clamp(delta_y / 4, -max_scroll, max_scroll);
} else {
w->viewport->scrollpos_x = w->viewport->dest_scrollpos_x;
w->viewport->scrollpos_y = w->viewport->dest_scrollpos_y;
}
}
ClampViewportToMap(vp, w->viewport->scrollpos_x, w->viewport->scrollpos_y);
SetViewportPosition(w, w->viewport->scrollpos_x, w->viewport->scrollpos_y);
}
}
/**
* Marks a viewport as dirty for repaint if it displays (a part of) the area the needs to be repainted.
* @param vp The viewport to mark as dirty
* @param left Left edge of area to repaint
* @param top Top edge of area to repaint
* @param right Right edge of area to repaint
* @param bottom Bottom edge of area to repaint
* @ingroup dirty
*/
static void MarkViewportDirty(const ViewPort *vp, int left, int top, int right, int bottom)
{
right -= vp->virtual_left;
if (right <= 0) return;
bottom -= vp->virtual_top;
if (bottom <= 0) return;
left = max(0, left - vp->virtual_left);
if (left >= vp->virtual_width) return;
top = max(0, top - vp->virtual_top);
if (top >= vp->virtual_height) return;
SetDirtyBlocks(
UnScaleByZoom(left, vp->zoom) + vp->left,
UnScaleByZoom(top, vp->zoom) + vp->top,
UnScaleByZoom(right, vp->zoom) + vp->left,
UnScaleByZoom(bottom, vp->zoom) + vp->top
);
}
/**
* Mark all viewports that display an area as dirty (in need of repaint).
* @param left Left edge of area to repaint
* @param top Top edge of area to repaint
* @param right Right edge of area to repaint
* @param bottom Bottom edge of area to repaint
* @ingroup dirty
*/
void MarkAllViewportsDirty(int left, int top, int right, int bottom)
{
Window **wz;
FOR_ALL_WINDOWS(wz) {
ViewPort *vp = (*wz)->viewport;
if (vp != NULL) {
assert(vp->width != 0);
MarkViewportDirty(vp, left, top, right, bottom);
}
}
}
void MarkTileDirtyByTile(TileIndex tile)
{
Point pt = RemapCoords(TileX(tile) * TILE_SIZE, TileY(tile) * TILE_SIZE, GetTileZ(tile));
MarkAllViewportsDirty(
pt.x - 31,
pt.y - 122,
pt.x - 31 + 67,
pt.y - 122 + 154
);
}
void MarkTileDirty(int x, int y)
{
uint z = 0;
Point pt;
if (IsInsideMM(x, 0, MapSizeX() * TILE_SIZE) &&
IsInsideMM(y, 0, MapSizeY() * TILE_SIZE))
z = GetTileZ(TileVirtXY(x, y));
pt = RemapCoords(x, y, z);
MarkAllViewportsDirty(
pt.x - 31,
pt.y - 122,
pt.x - 31 + 67,
pt.y - 122 + 154
);
}
/**
* Marks the selected tiles as dirty.
*
* This function marks the selected tiles as dirty for repaint
*
* @note Documentation may be wrong (Progman)
* @ingroup dirty
*/
static void SetSelectionTilesDirty()
{
int y_size, x_size;
int x = _thd.pos.x;
int y = _thd.pos.y;
x_size = _thd.size.x;
y_size = _thd.size.y;
if (_thd.outersize.x) {
x_size += _thd.outersize.x;
x += _thd.offs.x;
y_size += _thd.outersize.y;
y += _thd.offs.y;
}
assert(x_size > 0);
assert(y_size > 0);
x_size += x;
y_size += y;
do {
int y_bk = y;
do {
MarkTileDirty(x, y);
} while ( (y += TILE_SIZE) != y_size);
y = y_bk;
} while ( (x += TILE_SIZE) != x_size);
}
void SetSelectionRed(bool b)
{
_thd.make_square_red = b;
SetSelectionTilesDirty();
}
static bool CheckClickOnTown(const ViewPort *vp, int x, int y)
{
const Town *t;
if (!HasBit(_display_opt, DO_SHOW_TOWN_NAMES)) return false;
switch (vp->zoom) {
case ZOOM_LVL_NORMAL:
x = x - vp->left + vp->virtual_left;
y = y - vp->top + vp->virtual_top;
FOR_ALL_TOWNS(t) {
if (y >= t->sign.top &&
y < t->sign.top + 12 &&
x >= t->sign.left &&
x < t->sign.left + t->sign.width_1) {
ShowTownViewWindow(t->index);
return true;
}
}
break;
case ZOOM_LVL_OUT_2X:
x = (x - vp->left + 1) * 2 + vp->virtual_left;
y = (y - vp->top + 1) * 2 + vp->virtual_top;
FOR_ALL_TOWNS(t) {
if (y >= t->sign.top &&
y < t->sign.top + 24 &&
x >= t->sign.left &&
x < t->sign.left + t->sign.width_1 * 2) {
ShowTownViewWindow(t->index);
return true;
}
}
break;
case ZOOM_LVL_OUT_4X:
case ZOOM_LVL_OUT_8X:
x = ScaleByZoom(x - vp->left + ScaleByZoom(1, vp->zoom) - 1, vp->zoom) + vp->virtual_left;
y = ScaleByZoom(y - vp->top + ScaleByZoom(1, vp->zoom) - 1, vp->zoom) + vp->virtual_top;
FOR_ALL_TOWNS(t) {
if (y >= t->sign.top &&
y < t->sign.top + ScaleByZoom(12, vp->zoom) &&
x >= t->sign.left &&
x < t->sign.left + ScaleByZoom(t->sign.width_2, vp->zoom)) {
ShowTownViewWindow(t->index);
return true;
}
}
break;
default: NOT_REACHED();
}
return false;
}
static bool CheckClickOnStation(const ViewPort *vp, int x, int y)
{
const Station *st;
if (!HasBit(_display_opt, DO_SHOW_STATION_NAMES) || IsInvisibilitySet(TO_SIGNS)) return false;
switch (vp->zoom) {
case ZOOM_LVL_NORMAL:
x = x - vp->left + vp->virtual_left;
y = y - vp->top + vp->virtual_top;
FOR_ALL_STATIONS(st) {
if (y >= st->sign.top &&
y < st->sign.top + 12 &&
x >= st->sign.left &&
x < st->sign.left + st->sign.width_1) {
ShowStationViewWindow(st->index);
return true;
}
}
break;
case ZOOM_LVL_OUT_2X:
x = (x - vp->left + 1) * 2 + vp->virtual_left;
y = (y - vp->top + 1) * 2 + vp->virtual_top;
FOR_ALL_STATIONS(st) {
if (y >= st->sign.top &&
y < st->sign.top + 24 &&
x >= st->sign.left &&
x < st->sign.left + st->sign.width_1 * 2) {
ShowStationViewWindow(st->index);
return true;
}
}
break;
case ZOOM_LVL_OUT_4X:
case ZOOM_LVL_OUT_8X:
x = ScaleByZoom(x - vp->left + ScaleByZoom(1, vp->zoom) - 1, vp->zoom) + vp->virtual_left;
y = ScaleByZoom(y - vp->top + ScaleByZoom(1, vp->zoom) - 1, vp->zoom) + vp->virtual_top;
FOR_ALL_STATIONS(st) {
if (y >= st->sign.top &&
y < st->sign.top + ScaleByZoom(12, vp->zoom) &&
x >= st->sign.left &&
x < st->sign.left + ScaleByZoom(st->sign.width_2, vp->zoom)) {
ShowStationViewWindow(st->index);
return true;
}
}
break;
default: NOT_REACHED();
}
return false;
}
static bool CheckClickOnSign(const ViewPort *vp, int x, int y)
{
const Sign *si;
/* Signs are turned off, or they are transparent and invisibility is ON, or player is a spectator */
if (!HasBit(_display_opt, DO_SHOW_SIGNS) || IsInvisibilitySet(TO_SIGNS) || _current_player == PLAYER_SPECTATOR) return false;
switch (vp->zoom) {
case ZOOM_LVL_NORMAL:
x = x - vp->left + vp->virtual_left;
y = y - vp->top + vp->virtual_top;
FOR_ALL_SIGNS(si) {
if (y >= si->sign.top &&
y < si->sign.top + 12 &&
x >= si->sign.left &&
x < si->sign.left + si->sign.width_1) {
HandleClickOnSign(si);
return true;
}
}
break;
case ZOOM_LVL_OUT_2X:
x = (x - vp->left + 1) * 2 + vp->virtual_left;
y = (y - vp->top + 1) * 2 + vp->virtual_top;
FOR_ALL_SIGNS(si) {
if (y >= si->sign.top &&
y < si->sign.top + 24 &&
x >= si->sign.left &&
x < si->sign.left + si->sign.width_1 * 2) {
HandleClickOnSign(si);
return true;
}
}
break;
case ZOOM_LVL_OUT_4X:
case ZOOM_LVL_OUT_8X:
x = ScaleByZoom(x - vp->left + ScaleByZoom(1, vp->zoom) - 1, vp->zoom) + vp->virtual_left;
y = ScaleByZoom(y - vp->top + ScaleByZoom(1, vp->zoom) - 1, vp->zoom) + vp->virtual_top;
FOR_ALL_SIGNS(si) {
if (y >= si->sign.top &&
y < si->sign.top + ScaleByZoom(12, vp->zoom) &&
x >= si->sign.left &&
x < si->sign.left + ScaleByZoom(si->sign.width_2, vp->zoom)) {
HandleClickOnSign(si);
return true;
}
}
break;
default: NOT_REACHED();
}
return false;
}
static bool CheckClickOnWaypoint(const ViewPort *vp, int x, int y)
{
const Waypoint *wp;
if (!HasBit(_display_opt, DO_WAYPOINTS) || IsInvisibilitySet(TO_SIGNS)) return false;
switch (vp->zoom) {
case ZOOM_LVL_NORMAL:
x = x - vp->left + vp->virtual_left;
y = y - vp->top + vp->virtual_top;
FOR_ALL_WAYPOINTS(wp) {
if (y >= wp->sign.top &&
y < wp->sign.top + 12 &&
x >= wp->sign.left &&
x < wp->sign.left + wp->sign.width_1) {
ShowWaypointWindow(wp);
return true;
}
}
break;
case ZOOM_LVL_OUT_2X:
x = (x - vp->left + 1) * 2 + vp->virtual_left;
y = (y - vp->top + 1) * 2 + vp->virtual_top;
FOR_ALL_WAYPOINTS(wp) {
if (y >= wp->sign.top &&
y < wp->sign.top + 24 &&
x >= wp->sign.left &&
x < wp->sign.left + wp->sign.width_1 * 2) {
ShowWaypointWindow(wp);
return true;
}
}
break;
case ZOOM_LVL_OUT_4X:
case ZOOM_LVL_OUT_8X:
x = ScaleByZoom(x - vp->left + ScaleByZoom(1, vp->zoom) - 1, vp->zoom) + vp->virtual_left;
y = ScaleByZoom(y - vp->top + ScaleByZoom(1, vp->zoom) - 1, vp->zoom) + vp->virtual_top;
FOR_ALL_WAYPOINTS(wp) {
if (y >= wp->sign.top &&
y < wp->sign.top + ScaleByZoom(12, vp->zoom) &&
x >= wp->sign.left &&
x < wp->sign.left + ScaleByZoom(wp->sign.width_2, vp->zoom)) {
ShowWaypointWindow(wp);
return true;
}
}
break;
default: NOT_REACHED();
}
return false;
}
static void CheckClickOnLandscape(const ViewPort *vp, int x, int y)
{
Point pt = TranslateXYToTileCoord(vp, x, y);
if (pt.x != -1) ClickTile(TileVirtXY(pt.x, pt.y));
}
static void SafeShowTrainViewWindow(const Vehicle* v)
{
if (!IsFrontEngine(v)) v = v->First();
ShowVehicleViewWindow(v);
}
static void SafeShowRoadVehViewWindow(const Vehicle *v)
{
if (!IsRoadVehFront(v)) v = v->First();
ShowVehicleViewWindow(v);
}
static void Nop(const Vehicle *v) {}
typedef void OnVehicleClickProc(const Vehicle *v);
static OnVehicleClickProc* const _on_vehicle_click_proc[] = {
SafeShowTrainViewWindow,
SafeShowRoadVehViewWindow,
ShowVehicleViewWindow,
ShowVehicleViewWindow,
Nop, // Special vehicles
Nop // Disaster vehicles
};
void HandleViewportClicked(const ViewPort *vp, int x, int y)
{
const Vehicle *v;
if (CheckClickOnTown(vp, x, y)) return;
if (CheckClickOnStation(vp, x, y)) return;
if (CheckClickOnSign(vp, x, y)) return;
if (CheckClickOnWaypoint(vp, x, y)) return;
CheckClickOnLandscape(vp, x, y);
v = CheckClickOnVehicle(vp, x, y);
if (v != NULL) {
DEBUG(misc, 2, "Vehicle %d (index %d) at %p", v->unitnumber, v->index, v);
_on_vehicle_click_proc[v->type](v);
}
}
Vehicle *CheckMouseOverVehicle()
{
const Window *w;
const ViewPort *vp;
int x = _cursor.pos.x;
int y = _cursor.pos.y;
w = FindWindowFromPt(x, y);
if (w == NULL) return NULL;
vp = IsPtInWindowViewport(w, x, y);
return (vp != NULL) ? CheckClickOnVehicle(vp, x, y) : NULL;
}
void PlaceObject()
{
Point pt;
Window *w;
pt = GetTileBelowCursor();
if (pt.x == -1) return;
if (_thd.place_mode == VHM_POINT) {
pt.x += 8;
pt.y += 8;
}
_tile_fract_coords.x = pt.x & 0xF;
_tile_fract_coords.y = pt.y & 0xF;
w = GetCallbackWnd();
if (w != NULL) w->OnPlaceObject(pt, TileVirtXY(pt.x, pt.y));
}
/* scrolls the viewport in a window to a given location */
bool ScrollWindowTo(int x , int y, Window *w, bool instant)
{
/* The slope cannot be acquired outside of the map, so make sure we are always within the map. */
Point pt = MapXYZToViewport(w->viewport, x, y, GetSlopeZ(Clamp(x, 0, MapSizeX()), Clamp(y, 0, MapSizeY())));
w->viewport->follow_vehicle = INVALID_VEHICLE;
if (w->viewport->dest_scrollpos_x == pt.x && w->viewport->dest_scrollpos_y == pt.y)
return false;
if (instant) {
w->viewport->scrollpos_x = pt.x;
w->viewport->scrollpos_y = pt.y;
}
w->viewport->dest_scrollpos_x = pt.x;
w->viewport->dest_scrollpos_y = pt.y;
return true;
}
bool ScrollMainWindowToTile(TileIndex tile, bool instant)
{
return ScrollMainWindowTo(TileX(tile) * TILE_SIZE + TILE_SIZE / 2, TileY(tile) * TILE_SIZE + TILE_SIZE / 2, instant);
}
void SetRedErrorSquare(TileIndex tile)
{
TileIndex old;
old = _thd.redsq;
_thd.redsq = tile;
if (tile != old) {
if (tile != 0) MarkTileDirtyByTile(tile);
if (old != 0) MarkTileDirtyByTile(old);
}
}
void SetTileSelectSize(int w, int h)
{
_thd.new_size.x = w * TILE_SIZE;
_thd.new_size.y = h * TILE_SIZE;
_thd.new_outersize.x = 0;
_thd.new_outersize.y = 0;
}
void SetTileSelectBigSize(int ox, int oy, int sx, int sy)
{
_thd.offs.x = ox * TILE_SIZE;
_thd.offs.y = oy * TILE_SIZE;
_thd.new_outersize.x = sx * TILE_SIZE;
_thd.new_outersize.y = sy * TILE_SIZE;
}
/** returns the best autorail highlight type from map coordinates */
static HighLightStyle GetAutorailHT(int x, int y)
{
return HT_RAIL | _autorail_piece[x & 0xF][y & 0xF];
}
/**
* Updates tile highlighting for all cases.
* Uses _thd.selstart and _thd.selend and _thd.place_mode (set elsewhere) to determine _thd.pos and _thd.size
* Also drawstyle is determined. Uses _thd.new.* as a buffer and calls SetSelectionTilesDirty() twice,
* Once for the old and once for the new selection.
* _thd is TileHighlightData, found in viewport.h
* Called by MouseLoop() in windows.cpp
*/
void UpdateTileSelection()
{
int x1;
int y1;
_thd.new_drawstyle = 0;
if (_thd.place_mode == VHM_SPECIAL) {
x1 = _thd.selend.x;
y1 = _thd.selend.y;
if (x1 != -1) {
int x2 = _thd.selstart.x & ~0xF;
int y2 = _thd.selstart.y & ~0xF;
x1 &= ~0xF;
y1 &= ~0xF;
if (x1 >= x2) Swap(x1, x2);
if (y1 >= y2) Swap(y1, y2);
_thd.new_pos.x = x1;
_thd.new_pos.y = y1;
_thd.new_size.x = x2 - x1 + TILE_SIZE;
_thd.new_size.y = y2 - y1 + TILE_SIZE;
_thd.new_drawstyle = _thd.next_drawstyle;
}
} else if (_thd.place_mode != VHM_NONE) {
Point pt = GetTileBelowCursor();
x1 = pt.x;
y1 = pt.y;
if (x1 != -1) {
switch (_thd.place_mode) {
case VHM_RECT:
_thd.new_drawstyle = HT_RECT;
break;
case VHM_POINT:
_thd.new_drawstyle = HT_POINT;
x1 += 8;
y1 += 8;
break;
case VHM_RAIL:
_thd.new_drawstyle = GetAutorailHT(pt.x, pt.y); // draw one highlighted tile
break;
default:
NOT_REACHED();
break;
}
_thd.new_pos.x = x1 & ~0xF;
_thd.new_pos.y = y1 & ~0xF;
}
}
/* redraw selection */
if (_thd.drawstyle != _thd.new_drawstyle ||
_thd.pos.x != _thd.new_pos.x || _thd.pos.y != _thd.new_pos.y ||
_thd.size.x != _thd.new_size.x || _thd.size.y != _thd.new_size.y ||
_thd.outersize.x != _thd.new_outersize.x ||
_thd.outersize.y != _thd.new_outersize.y) {
/* clear the old selection? */
if (_thd.drawstyle) SetSelectionTilesDirty();
_thd.drawstyle = _thd.new_drawstyle;
_thd.pos = _thd.new_pos;
_thd.size = _thd.new_size;
_thd.outersize = _thd.new_outersize;
_thd.dirty = 0xff;
/* draw the new selection? */
if (_thd.new_drawstyle) SetSelectionTilesDirty();
}
}
/** Displays the measurement tooltips when selecting multiple tiles
* @param str String to be displayed
* @param paramcount number of params to deal with
* @param params (optional) up to 5 pieces of additional information that may be added to a tooltip
*/
static inline void ShowMeasurementTooltips(StringID str, uint paramcount, const uint64 params[])
{
if (!_settings_client.gui.measure_tooltip) return;
GuiShowTooltips(str, paramcount, params, true);
}
/** highlighting tiles while only going over them with the mouse */
void VpStartPlaceSizing(TileIndex tile, ViewportPlaceMethod method, ViewportDragDropSelectionProcess process)
{
_thd.select_method = method;
_thd.select_proc = process;
_thd.selend.x = TileX(tile) * TILE_SIZE;
_thd.selstart.x = TileX(tile) * TILE_SIZE;
_thd.selend.y = TileY(tile) * TILE_SIZE;
_thd.selstart.y = TileY(tile) * TILE_SIZE;
/* Needed so several things (road, autoroad, bridges, ...) are placed correctly.
* In effect, placement starts from the centre of a tile
*/
if (method == VPM_X_OR_Y || method == VPM_FIX_X || method == VPM_FIX_Y) {
_thd.selend.x += TILE_SIZE / 2;
_thd.selend.y += TILE_SIZE / 2;
_thd.selstart.x += TILE_SIZE / 2;
_thd.selstart.y += TILE_SIZE / 2;
}
if (_thd.place_mode == VHM_RECT) {
_thd.place_mode = VHM_SPECIAL;
_thd.next_drawstyle = HT_RECT;
} else if (_thd.place_mode == VHM_RAIL) { // autorail one piece
_thd.place_mode = VHM_SPECIAL;
_thd.next_drawstyle = _thd.drawstyle;
} else {
_thd.place_mode = VHM_SPECIAL;
_thd.next_drawstyle = HT_POINT;
}
_special_mouse_mode = WSM_SIZING;
}
void VpSetPlaceSizingLimit(int limit)
{
_thd.sizelimit = limit;
}
/**
* Highlights all tiles between a set of two tiles. Used in dock and tunnel placement
* @param from TileIndex of the first tile to highlight
* @param to TileIndex of the last tile to highlight */
void VpSetPresizeRange(TileIndex from, TileIndex to)
{
uint64 distance = DistanceManhattan(from, to) + 1;
_thd.selend.x = TileX(to) * TILE_SIZE;
_thd.selend.y = TileY(to) * TILE_SIZE;
_thd.selstart.x = TileX(from) * TILE_SIZE;
_thd.selstart.y = TileY(from) * TILE_SIZE;
_thd.next_drawstyle = HT_RECT;
/* show measurement only if there is any length to speak of */
if (distance > 1) ShowMeasurementTooltips(STR_MEASURE_LENGTH, 1, &distance);
}
static void VpStartPreSizing()
{
_thd.selend.x = -1;
_special_mouse_mode = WSM_PRESIZE;
}
/** returns information about the 2x1 piece to be build.
* The lower bits (0-3) are the track type. */
static HighLightStyle Check2x1AutoRail(int mode)
{
int fxpy = _tile_fract_coords.x + _tile_fract_coords.y;
int sxpy = (_thd.selend.x & 0xF) + (_thd.selend.y & 0xF);
int fxmy = _tile_fract_coords.x - _tile_fract_coords.y;
int sxmy = (_thd.selend.x & 0xF) - (_thd.selend.y & 0xF);
switch (mode) {
default: NOT_REACHED();
case 0: // end piece is lower right
if (fxpy >= 20 && sxpy <= 12) { /*SwapSelection(); DoRailroadTrack(0); */return HT_DIR_HL; }
if (fxmy < -3 && sxmy > 3) {/* DoRailroadTrack(0); */return HT_DIR_VR; }
return HT_DIR_Y;
case 1:
if (fxmy > 3 && sxmy < -3) { /*SwapSelection(); DoRailroadTrack(0); */return HT_DIR_VL; }
if (fxpy <= 12 && sxpy >= 20) { /*DoRailroadTrack(0); */return HT_DIR_HU; }
return HT_DIR_Y;
case 2:
if (fxmy > 3 && sxmy < -3) { /*DoRailroadTrack(3);*/ return HT_DIR_VL; }
if (fxpy >= 20 && sxpy <= 12) { /*SwapSelection(); DoRailroadTrack(0); */return HT_DIR_HL; }
return HT_DIR_X;
case 3:
if (fxmy < -3 && sxmy > 3) { /*SwapSelection(); DoRailroadTrack(3);*/ return HT_DIR_VR; }
if (fxpy <= 12 && sxpy >= 20) { /*DoRailroadTrack(0); */return HT_DIR_HU; }
return HT_DIR_X;
}
}
/** Check if the direction of start and end tile should be swapped based on
* the dragging-style. Default directions are:
* in the case of a line (HT_RAIL, HT_LINE): DIR_NE, DIR_NW, DIR_N, DIR_E
* in the case of a rect (HT_RECT, HT_POINT): DIR_S, DIR_E
* For example dragging a rectangle area from south to north should be swapped to
* north-south (DIR_S) to obtain the same results with less code. This is what
* the return value signifies.
* @param style HighLightStyle dragging style
* @param start_tile start tile of drag
* @param end_tile end tile of drag
* @return boolean value which when true means start/end should be swapped */
static bool SwapDirection(HighLightStyle style, TileIndex start_tile, TileIndex end_tile)
{
uint start_x = TileX(start_tile);
uint start_y = TileY(start_tile);
uint end_x = TileX(end_tile);
uint end_y = TileY(end_tile);
switch (style & HT_DRAG_MASK) {
case HT_RAIL:
case HT_LINE: return (end_x > start_x || (end_x == start_x && end_y > start_y));
case HT_RECT:
case HT_POINT: return (end_x != start_x && end_y < start_y);
default: NOT_REACHED();
}
return false;
}
/** Calculates height difference between one tile and another
* Multiplies the result to suit the standard given by minimap - 50 meters high
* To correctly get the height difference we need the direction we are dragging
* in, as well as with what kind of tool we are dragging. For example a horizontal
* autorail tool that starts in bottom and ends at the top of a tile will need the
* maximum of SW, S and SE, N corners respectively. This is handled by the lookup table below
* See _tileoffs_by_dir in map.c for the direction enums if you can't figure out
* the values yourself.
* @param style HightlightStyle of drag. This includes direction and style (autorail, rect, etc.)
* @param distance amount of tiles dragged, important for horizontal/vertical drags
* ignored for others
* @param start_tile, end_tile start and end tile of drag operation
* @return height difference between two tiles. Tile measurement tool utilizes
* this value in its tooltips */
static int CalcHeightdiff(HighLightStyle style, uint distance, TileIndex start_tile, TileIndex end_tile)
{
bool swap = SwapDirection(style, start_tile, end_tile);
byte style_t;
uint h0, h1, ht; // start heigth, end height, and temp variable
if (start_tile == end_tile) return 0;
if (swap) Swap(start_tile, end_tile);
switch (style & HT_DRAG_MASK) {
case HT_RECT: {
static const TileIndexDiffC heightdiff_area_by_dir[] = {
/* Start */ {1, 0}, /* Dragging east */ {0, 0}, /* Dragging south */
/* End */ {0, 1}, /* Dragging east */ {1, 1} /* Dragging south */
};
/* In the case of an area we can determine whether we were dragging south or
* east by checking the X-coordinates of the tiles */
style_t = (byte)(TileX(end_tile) > TileX(start_tile));
start_tile = TILE_ADD(start_tile, ToTileIndexDiff(heightdiff_area_by_dir[style_t]));
end_tile = TILE_ADD(end_tile, ToTileIndexDiff(heightdiff_area_by_dir[2 + style_t]));
}
/* Fallthrough */
case HT_POINT:
h0 = TileHeight(start_tile);
h1 = TileHeight(end_tile);
break;
default: { /* All other types, this is mostly only line/autorail */
static const HighLightStyle flip_style_direction[] = {
HT_DIR_X, HT_DIR_Y, HT_DIR_HL, HT_DIR_HU, HT_DIR_VR, HT_DIR_VL
};
static const TileIndexDiffC heightdiff_line_by_dir[] = {
/* Start */ {1, 0}, {1, 1}, /* HT_DIR_X */ {0, 1}, {1, 1}, /* HT_DIR_Y */
/* Start */ {1, 0}, {0, 0}, /* HT_DIR_HU */ {1, 0}, {1, 1}, /* HT_DIR_HL */
/* Start */ {1, 0}, {1, 1}, /* HT_DIR_VL */ {0, 1}, {1, 1}, /* HT_DIR_VR */
/* Start */ {0, 1}, {0, 0}, /* HT_DIR_X */ {1, 0}, {0, 0}, /* HT_DIR_Y */
/* End */ {0, 1}, {0, 0}, /* HT_DIR_HU */ {1, 1}, {0, 1}, /* HT_DIR_HL */
/* End */ {1, 0}, {0, 0}, /* HT_DIR_VL */ {0, 0}, {0, 1}, /* HT_DIR_VR */
};
distance %= 2; // we're only interested if the distance is even or uneven
style &= HT_DIR_MASK;
/* To handle autorail, we do some magic to be able to use a lookup table.
* Firstly if we drag the other way around, we switch start&end, and if needed
* also flip the drag-position. Eg if it was on the left, and the distance is even
* that means the end, which is now the start is on the right */
if (swap && distance == 0) style = flip_style_direction[style];
/* Use lookup table for start-tile based on HighLightStyle direction */
style_t = style * 2;
assert(style_t < lengthof(heightdiff_line_by_dir) - 13);
h0 = TileHeight(TILE_ADD(start_tile, ToTileIndexDiff(heightdiff_line_by_dir[style_t])));
ht = TileHeight(TILE_ADD(start_tile, ToTileIndexDiff(heightdiff_line_by_dir[style_t + 1])));
h0 = max(h0, ht);
/* Use lookup table for end-tile based on HighLightStyle direction
* flip around side (lower/upper, left/right) based on distance */
if (distance == 0) style_t = flip_style_direction[style] * 2;
assert(style_t < lengthof(heightdiff_line_by_dir) - 13);
h1 = TileHeight(TILE_ADD(end_tile, ToTileIndexDiff(heightdiff_line_by_dir[12 + style_t])));
ht = TileHeight(TILE_ADD(end_tile, ToTileIndexDiff(heightdiff_line_by_dir[12 + style_t + 1])));
h1 = max(h1, ht);
} break;
}
if (swap) Swap(h0, h1);
/* Minimap shows height in intervals of 50 meters, let's do the same */
return (int)(h1 - h0) * 50;
}
static const StringID measure_strings_length[] = {STR_NULL, STR_MEASURE_LENGTH, STR_MEASURE_LENGTH_HEIGHTDIFF};
/** while dragging */
static void CalcRaildirsDrawstyle(TileHighlightData *thd, int x, int y, int method)
{
HighLightStyle b;
uint w, h;
int dx = thd->selstart.x - (thd->selend.x & ~0xF);
int dy = thd->selstart.y - (thd->selend.y & ~0xF);
w = abs(dx) + 16;
h = abs(dy) + 16;
if (TileVirtXY(thd->selstart.x, thd->selstart.y) == TileVirtXY(x, y)) { // check if we're only within one tile
if (method == VPM_RAILDIRS) {
b = GetAutorailHT(x, y);
} else { // rect for autosignals on one tile
b = HT_RECT;
}
} else if (h == 16) { // Is this in X direction?
if (dx == 16) { // 2x1 special handling
b = (Check2x1AutoRail(3)) | HT_LINE;
} else if (dx == -16) {
b = (Check2x1AutoRail(2)) | HT_LINE;
} else {
b = HT_LINE | HT_DIR_X;
}
y = thd->selstart.y;
} else if (w == 16) { // Or Y direction?
if (dy == 16) { // 2x1 special handling
b = (Check2x1AutoRail(1)) | HT_LINE;
} else if (dy == -16) { // 2x1 other direction
b = (Check2x1AutoRail(0)) | HT_LINE;
} else {
b = HT_LINE | HT_DIR_Y;
}
x = thd->selstart.x;
} else if (w > h * 2) { // still count as x dir?
b = HT_LINE | HT_DIR_X;
y = thd->selstart.y;
} else if (h > w * 2) { // still count as y dir?
b = HT_LINE | HT_DIR_Y;
x = thd->selstart.x;
} else { // complicated direction
int d = w - h;
thd->selend.x = thd->selend.x & ~0xF;
thd->selend.y = thd->selend.y & ~0xF;
// four cases.
if (x > thd->selstart.x) {
if (y > thd->selstart.y) {
// south
if (d == 0) {
b = (x & 0xF) > (y & 0xF) ? HT_LINE | HT_DIR_VL : HT_LINE | HT_DIR_VR;
} else if (d >= 0) {
x = thd->selstart.x + h;
b = HT_LINE | HT_DIR_VL;
// return px == py || px == py + 16;
} else {
y = thd->selstart.y + w;
b = HT_LINE | HT_DIR_VR;
} // return px == py || px == py - 16;
} else {
// west
if (d == 0) {
b = (x & 0xF) + (y & 0xF) >= 0x10 ? HT_LINE | HT_DIR_HL : HT_LINE | HT_DIR_HU;
} else if (d >= 0) {
x = thd->selstart.x + h;
b = HT_LINE | HT_DIR_HL;
} else {
y = thd->selstart.y - w;
b = HT_LINE | HT_DIR_HU;
}
}
} else {
if (y > thd->selstart.y) {
// east
if (d == 0) {
b = (x & 0xF) + (y & 0xF) >= 0x10 ? HT_LINE | HT_DIR_HL : HT_LINE | HT_DIR_HU;
} else if (d >= 0) {
x = thd->selstart.x - h;
b = HT_LINE | HT_DIR_HU;
// return px == -py || px == -py - 16;
} else {
y = thd->selstart.y + w;
b = HT_LINE | HT_DIR_HL;
} // return px == -py || px == -py + 16;
} else {
// north
if (d == 0) {
b = (x & 0xF) > (y & 0xF) ? HT_LINE | HT_DIR_VL : HT_LINE | HT_DIR_VR;
} else if (d >= 0) {
x = thd->selstart.x - h;
b = HT_LINE | HT_DIR_VR;
// return px == py || px == py - 16;
} else {
y = thd->selstart.y - w;
b = HT_LINE | HT_DIR_VL;
} //return px == py || px == py + 16;
}
}
}
if (_settings_client.gui.measure_tooltip) {
TileIndex t0 = TileVirtXY(thd->selstart.x, thd->selstart.y);
TileIndex t1 = TileVirtXY(x, y);
uint distance = DistanceManhattan(t0, t1) + 1;
byte index = 0;
uint64 params[2];
if (distance != 1) {
int heightdiff = CalcHeightdiff(b, distance, t0, t1);
/* If we are showing a tooltip for horizontal or vertical drags,
* 2 tiles have a length of 1. To bias towards the ceiling we add
* one before division. It feels more natural to count 3 lengths as 2 */
if ((b & HT_DIR_MASK) != HT_DIR_X && (b & HT_DIR_MASK) != HT_DIR_Y) {
distance = (distance + 1) / 2;
}
params[index++] = distance;
if (heightdiff != 0) params[index++] = heightdiff;
}
ShowMeasurementTooltips(measure_strings_length[index], index, params);
}
thd->selend.x = x;
thd->selend.y = y;
thd->next_drawstyle = b;
}
/**
* Selects tiles while dragging
* @param x X coordinate of end of selection
* @param y Y coordinate of end of selection
* @param method modifies the way tiles are selected. Possible
* methods are VPM_* in viewport.h */
void VpSelectTilesWithMethod(int x, int y, ViewportPlaceMethod method)
{
int sx, sy;
HighLightStyle style;
if (x == -1) {
_thd.selend.x = -1;
return;
}
/* Special handling of drag in any (8-way) direction */
if (method == VPM_RAILDIRS || method == VPM_SIGNALDIRS) {
_thd.selend.x = x;
_thd.selend.y = y;
CalcRaildirsDrawstyle(&_thd, x, y, method);
return;
}
/* Needed so level-land is placed correctly */
if (_thd.next_drawstyle == HT_POINT) {
x += TILE_SIZE / 2;
y += TILE_SIZE / 2;
}
sx = _thd.selstart.x;
sy = _thd.selstart.y;
switch (method) {
case VPM_X_OR_Y: /* drag in X or Y direction */
if (abs(sy - y) < abs(sx - x)) {
y = sy;
style = HT_DIR_X;
} else {
x = sx;
style = HT_DIR_Y;
}
goto calc_heightdiff_single_direction;
case VPM_FIX_X: /* drag in Y direction */
x = sx;
style = HT_DIR_Y;
goto calc_heightdiff_single_direction;
case VPM_FIX_Y: /* drag in X direction */
y = sy;
style = HT_DIR_X;
calc_heightdiff_single_direction:;
if (_settings_client.gui.measure_tooltip) {
TileIndex t0 = TileVirtXY(sx, sy);
TileIndex t1 = TileVirtXY(x, y);
uint distance = DistanceManhattan(t0, t1) + 1;
byte index = 0;
uint64 params[2];
if (distance != 1) {
/* With current code passing a HT_LINE style to calculate the height
* difference is enough. However if/when a point-tool is created
* with this method, function should be called with new_style (below)
* instead of HT_LINE | style case HT_POINT is handled specially
* new_style := (_thd.next_drawstyle & HT_RECT) ? HT_LINE | style : _thd.next_drawstyle; */
int heightdiff = CalcHeightdiff(HT_LINE | style, 0, t0, t1);
params[index++] = distance;
if (heightdiff != 0) params[index++] = heightdiff;
}
ShowMeasurementTooltips(measure_strings_length[index], index, params);
} break;
case VPM_X_AND_Y_LIMITED: { /* drag an X by Y constrained rect area */
int limit = (_thd.sizelimit - 1) * TILE_SIZE;
x = sx + Clamp(x - sx, -limit, limit);
y = sy + Clamp(y - sy, -limit, limit);
} /* Fallthrough */
case VPM_X_AND_Y: { /* drag an X by Y area */
if (_settings_client.gui.measure_tooltip) {
static const StringID measure_strings_area[] = {
STR_NULL, STR_NULL, STR_MEASURE_AREA, STR_MEASURE_AREA_HEIGHTDIFF
};
TileIndex t0 = TileVirtXY(sx, sy);
TileIndex t1 = TileVirtXY(x, y);
uint dx = Delta(TileX(t0), TileX(t1)) + 1;
uint dy = Delta(TileY(t0), TileY(t1)) + 1;
byte index = 0;
uint64 params[3];
/* If dragging an area (eg dynamite tool) and it is actually a single
* row/column, change the type to 'line' to get proper calculation for height */
style = (HighLightStyle)_thd.next_drawstyle;
if (style & HT_RECT) {
if (dx == 1) {
style = HT_LINE | HT_DIR_Y;
} else if (dy == 1) {
style = HT_LINE | HT_DIR_X;
}
}
if (dx != 1 || dy != 1) {
int heightdiff = CalcHeightdiff(style, 0, t0, t1);
params[index++] = dx;
params[index++] = dy;
if (heightdiff != 0) params[index++] = heightdiff;
}
ShowMeasurementTooltips(measure_strings_area[index], index, params);
}
break;
}
default: NOT_REACHED();
}
_thd.selend.x = x;
_thd.selend.y = y;
}
/**
* Handle the mouse while dragging for placement/resizing.
* @return Boolean whether search for a handler should continue
*/
bool VpHandlePlaceSizingDrag()
{
if (_special_mouse_mode != WSM_SIZING) return true;
/* stop drag mode if the window has been closed */
Window *w = FindWindowById(_thd.window_class, _thd.window_number);
if (w == NULL) {
ResetObjectToPlace();
return false;
}
/* while dragging execute the drag procedure of the corresponding window (mostly VpSelectTilesWithMethod() ) */
if (_left_button_down) {
w->OnPlaceDrag(_thd.select_method, _thd.select_proc, GetTileBelowCursor());
return false;
}
/* mouse button released..
* keep the selected tool, but reset it to the original mode. */
_special_mouse_mode = WSM_NONE;
if (_thd.next_drawstyle == HT_RECT) {
_thd.place_mode = VHM_RECT;
} else if (_thd.select_method == VPM_SIGNALDIRS) { // some might call this a hack... -- Dominik
_thd.place_mode = VHM_RECT;
} else if (_thd.next_drawstyle & HT_LINE) {
_thd.place_mode = VHM_RAIL;
} else if (_thd.next_drawstyle & HT_RAIL) {
_thd.place_mode = VHM_RAIL;
} else {
_thd.place_mode = VHM_POINT;
}
SetTileSelectSize(1, 1);
w->OnPlaceMouseUp(_thd.select_method, _thd.select_proc, _thd.selend, TileVirtXY(_thd.selstart.x, _thd.selstart.y), TileVirtXY(_thd.selend.x, _thd.selend.y));
return false;
}
void SetObjectToPlaceWnd(CursorID icon, SpriteID pal, ViewportHighlightMode mode, Window *w)
{
SetObjectToPlace(icon, pal, mode, w->window_class, w->window_number);
}
#include "table/animcursors.h"
void SetObjectToPlace(CursorID icon, SpriteID pal, ViewportHighlightMode mode, WindowClass window_class, WindowNumber window_num)
{
/* undo clicking on button and drag & drop */
if (_thd.place_mode != VHM_NONE || _special_mouse_mode == WSM_DRAGDROP) {
Window *w = FindWindowById(_thd.window_class, _thd.window_number);
if (w != NULL) {
/* Call the abort function, but set the window class to something
* that will never be used to avoid infinite loops. Setting it to
* the 'next' window class must not be done because recursion into
* this function might in some cases reset the newly set object to
* place or not properly reset the original selection. */
_thd.window_class = WC_INVALID;
w->OnPlaceObjectAbort();
}
}
SetTileSelectSize(1, 1);
_thd.make_square_red = false;
if (mode == VHM_DRAG) { // VHM_DRAG is for dragdropping trains in the depot window
mode = VHM_NONE;
_special_mouse_mode = WSM_DRAGDROP;
} else {
_special_mouse_mode = WSM_NONE;
}
_thd.place_mode = mode;
_thd.window_class = window_class;
_thd.window_number = window_num;
if (mode == VHM_SPECIAL) // special tools, like tunnels or docks start with presizing mode
VpStartPreSizing();
if ((int)icon < 0) {
SetAnimatedMouseCursor(_animcursors[~icon]);
} else {
SetMouseCursor(icon, pal);
}
}
void ResetObjectToPlace()
{
SetObjectToPlace(SPR_CURSOR_MOUSE, PAL_NONE, VHM_NONE, WC_MAIN_WINDOW, 0);
}
void SaveViewportBeforeSaveGame()
{
const Window *w = FindWindowById(WC_MAIN_WINDOW, 0);
if (w != NULL) {
_saved_scrollpos_x = w->viewport->scrollpos_x;
_saved_scrollpos_y = w->viewport->scrollpos_y;
_saved_scrollpos_zoom = w->viewport->zoom;
}
}
void ResetViewportAfterLoadGame()
{
Window *w = FindWindowById(WC_MAIN_WINDOW, 0);
w->viewport->scrollpos_x = _saved_scrollpos_x;
w->viewport->scrollpos_y = _saved_scrollpos_y;
w->viewport->dest_scrollpos_x = _saved_scrollpos_x;
w->viewport->dest_scrollpos_y = _saved_scrollpos_y;
ViewPort *vp = w->viewport;
vp->zoom = min(_saved_scrollpos_zoom, ZOOM_LVL_MAX);
vp->virtual_width = ScaleByZoom(vp->width, vp->zoom);
vp->virtual_height = ScaleByZoom(vp->height, vp->zoom);
DoZoomInOutWindow(ZOOM_NONE, w); // update button status
MarkWholeScreenDirty();
}
Reference in New Issue View Git Blame Copy Permalink