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Improve visibility of slopes under trees in viewport map vegetation mode

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Loosely based on tree slope brightness adjustment from
https://github.com/nielsmh/OpenTTD/tree/tree-slope-brightness
This commit is contained in:
Jonathan G Rennison
2021-02-25 20:35:46 +00:00
parent eabfae9d31
commit 42e57995dd
2 changed files with 52 additions and 7 deletions
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40
src/viewport.cpp
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@@ -108,6 +108,7 @@
#include "video/video_driver.hpp"
#include "scope_info.h"
#include "scope.h"
#include "blitter/32bpp_base.hpp"
#include <map>
#include <vector>
@@ -2552,7 +2553,7 @@ void ViewportDrawPlans(const Viewport *vp)
/* Variables containing Colour if 32bpp or palette index if 8bpp. */
uint32 _vp_map_vegetation_clear_colours[16][6][8]; ///< [Slope][ClearGround][Multi (see LoadClearGroundMainColours())]
uint32 _vp_map_vegetation_tree_colours[5][MAX_TREE_COUNT_BY_LANDSCAPE]; ///< [TreeGround][max of _tree_count_by_landscape]
uint32 _vp_map_vegetation_tree_colours[16][5][MAX_TREE_COUNT_BY_LANDSCAPE]; ///< [Slope][TreeGround][max of _tree_count_by_landscape]
uint32 _vp_map_water_colour[5]; ///< [Slope]
static inline uint ViewportMapGetColourIndexMulti(const TileIndex tile, const ClearGround cg)
@@ -2603,10 +2604,10 @@ static inline uint32 ViewportMapGetColourVegetation(const TileIndex tile, TileTy
case MP_TREES: {
const TreeGround tg = GetTreeGround(tile);
const uint td = GetTreeDensity(tile);
Slope slope = show_slope ? (Slope) (GetTileSlope(tile, nullptr) & 15) : SLOPE_FLAT;
if (IsTransparencySet(TO_TREES)) {
ClearGround cg = _treeground_to_clearground[tg];
if (cg == CLEAR_SNOW && _settings_game.game_creation.landscape == LT_TROPIC) cg = CLEAR_DESERT;
Slope slope = show_slope ? (Slope) (GetTileSlope(tile, nullptr) & 15) : SLOPE_FLAT;
uint32 ground_colour = _vp_map_vegetation_clear_colours[slope][cg][td];
if (IsInvisibilitySet(TO_TREES)) {
@@ -2624,10 +2625,10 @@ static inline uint32 ViewportMapGetColourVegetation(const TileIndex tile, TileTy
}
} else {
if (tg == TREE_GROUND_SNOW_DESERT || tg == TREE_GROUND_ROUGH_SNOW) {
return _vp_map_vegetation_clear_colours[colour_index][_settings_game.game_creation.landscape == LT_TROPIC ? CLEAR_DESERT : CLEAR_SNOW][td];
return _vp_map_vegetation_clear_colours[colour_index ^ slope][_settings_game.game_creation.landscape == LT_TROPIC ? CLEAR_DESERT : CLEAR_SNOW][td];
} else {
const uint rnd = std::min<uint>(GetTreeCount(tile) ^ (((tile & 3) ^ (TileY(tile) & 3)) * td), MAX_TREE_COUNT_BY_LANDSCAPE - 1);
return _vp_map_vegetation_tree_colours[tg][rnd];
return _vp_map_vegetation_tree_colours[slope][tg][rnd];
}
}
}
@@ -5939,3 +5940,34 @@ void SetViewportCatchmentTown(const Town *t, bool sel)
}
if (_viewport_highlight_town != nullptr) SetWindowDirty(WC_TOWN_VIEW, _viewport_highlight_town->index);
}
int GetSlopeTreeBrightnessAdjust(Slope slope)
{
switch (slope) {
case SLOPE_NW:
case SLOPE_STEEP_N:
case SLOPE_STEEP_W:
return 8;
case SLOPE_N:
case SLOPE_W:
case SLOPE_ENW:
case SLOPE_NWS:
return 4;
case SLOPE_SE:
return -10;
case SLOPE_STEEP_S:
case SLOPE_STEEP_E:
return -4;
case SLOPE_NE:
return -8;
case SLOPE_SW:
return -4;
case SLOPE_S:
case SLOPE_E:
case SLOPE_SEN:
case SLOPE_WSE:
return -6;
default:
return 0;
}
}