132 lines
5.1 KiB
C++
132 lines
5.1 KiB
C++
/* $Id$ */
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/*
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* This file is part of OpenTTD.
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* OpenTTD is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, version 2.
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* OpenTTD is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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* See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with OpenTTD. If not, see <http://www.gnu.org/licenses/>.
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*/
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/** @file sprite.cpp Handling of sprites */
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#include "stdafx.h"
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#include "sprite.h"
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#include "viewport_func.h"
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#include "landscape.h"
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#include "spritecache.h"
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#include "zoom_func.h"
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/**
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* Draws a tile sprite sequence.
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* @param ti The tile to draw on
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* @param dts Sprite and subsprites to draw
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* @param to The transparency bit that toggles drawing of these sprites
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* @param orig_offset Sprite-Offset for original sprites
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* @param newgrf_offset Sprite-Offset for NewGRF defined sprites
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* @param default_palette The default recolour sprite to use (typically company colour)
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* @param child_offset_is_unsigned Whether child sprite offsets are interpreted signed or unsigned
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*/
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void DrawCommonTileSeq(const TileInfo *ti, const DrawTileSprites *dts, TransparencyOption to, int32 orig_offset, uint32 newgrf_offset, PaletteID default_palette, bool child_offset_is_unsigned)
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{
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bool parent_sprite_encountered = false;
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const DrawTileSeqStruct *dtss;
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bool skip_childs = false;
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foreach_draw_tile_seq(dtss, dts->seq) {
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SpriteID image = dtss->image.sprite;
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PaletteID pal = dtss->image.pal;
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if (skip_childs) {
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if (!dtss->IsParentSprite()) continue;
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skip_childs = false;
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}
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/* TTD sprite 0 means no sprite */
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if ((GB(image, 0, SPRITE_WIDTH) == 0 && !HasBit(image, SPRITE_MODIFIER_CUSTOM_SPRITE)) ||
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(IsInvisibilitySet(to) && !HasBit(image, SPRITE_MODIFIER_OPAQUE))) {
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skip_childs = dtss->IsParentSprite();
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continue;
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}
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image += (HasBit(image, SPRITE_MODIFIER_CUSTOM_SPRITE) ? newgrf_offset : orig_offset);
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if (HasBit(pal, SPRITE_MODIFIER_CUSTOM_SPRITE)) pal += newgrf_offset;
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pal = SpriteLayoutPaletteTransform(image, pal, default_palette);
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if (dtss->IsParentSprite()) {
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parent_sprite_encountered = true;
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AddSortableSpriteToDraw(
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image, pal,
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ti->x + dtss->delta_x, ti->y + dtss->delta_y,
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dtss->size_x, dtss->size_y,
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dtss->size_z, ti->z + dtss->delta_z,
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!HasBit(image, SPRITE_MODIFIER_OPAQUE) && IsTransparencySet(to)
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);
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} else {
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int offs_x = child_offset_is_unsigned ? (uint8)dtss->delta_x : dtss->delta_x;
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int offs_y = child_offset_is_unsigned ? (uint8)dtss->delta_y : dtss->delta_y;
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bool transparent = !HasBit(image, SPRITE_MODIFIER_OPAQUE) && IsTransparencySet(to);
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if (parent_sprite_encountered) {
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AddChildSpriteScreen(image, pal, offs_x, offs_y, transparent);
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} else {
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if (transparent) {
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SetBit(image, PALETTE_MODIFIER_TRANSPARENT);
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pal = PALETTE_TO_TRANSPARENT;
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}
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DrawGroundSprite(image, pal, NULL, offs_x, offs_y);
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}
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}
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}
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}
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/**
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* Draws a tile sprite sequence in the GUI
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* @param x X position to draw to
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* @param y Y position to draw to
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* @param dts Sprite and subsprites to draw
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* @param orig_offset Sprite-Offset for original sprites
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* @param newgrf_offset Sprite-Offset for NewGRF defined sprites
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* @param default_palette The default recolour sprite to use (typically company colour)
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* @param child_offset_is_unsigned Whether child sprite offsets are interpreted signed or unsigned
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*/
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void DrawCommonTileSeqInGUI(int x, int y, const DrawTileSprites *dts, int32 orig_offset, uint32 newgrf_offset, PaletteID default_palette, bool child_offset_is_unsigned)
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{
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const DrawTileSeqStruct *dtss;
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Point child_offset = {0, 0};
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bool skip_childs = false;
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foreach_draw_tile_seq(dtss, dts->seq) {
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SpriteID image = dtss->image.sprite;
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PaletteID pal = dtss->image.pal;
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if (skip_childs) {
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if (!dtss->IsParentSprite()) continue;
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skip_childs = false;
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}
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/* TTD sprite 0 means no sprite */
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if (GB(image, 0, SPRITE_WIDTH) == 0 && !HasBit(image, SPRITE_MODIFIER_CUSTOM_SPRITE)) {
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skip_childs = dtss->IsParentSprite();
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continue;
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}
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image += (HasBit(image, SPRITE_MODIFIER_CUSTOM_SPRITE) ? newgrf_offset : orig_offset);
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if (HasBit(pal, SPRITE_MODIFIER_CUSTOM_SPRITE)) pal += newgrf_offset;
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pal = SpriteLayoutPaletteTransform(image, pal, default_palette);
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if (dtss->IsParentSprite()) {
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Point pt = RemapCoords(dtss->delta_x, dtss->delta_y, dtss->delta_z);
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DrawSprite(image, pal, x + UnScaleByZoom(pt.x, ZOOM_LVL_GUI), y + UnScaleByZoom(pt.y, ZOOM_LVL_GUI));
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const Sprite *spr = GetSprite(image & SPRITE_MASK, ST_NORMAL);
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child_offset.x = UnScaleByZoom(pt.x + spr->x_offs, ZOOM_LVL_GUI);
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child_offset.y = UnScaleByZoom(pt.y + spr->y_offs, ZOOM_LVL_GUI);
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} else {
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int offs_x = child_offset_is_unsigned ? (uint8)dtss->delta_x : dtss->delta_x;
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int offs_y = child_offset_is_unsigned ? (uint8)dtss->delta_y : dtss->delta_y;
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DrawSprite(image, pal, x + child_offset.x + offs_x, y + child_offset.y + offs_y);
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}
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}
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}
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