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don't waste time drawing map tiles below fog of war

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This commit is contained in:
Tim Felgentreff 2022-05-31 20:17:36 +02:00
parent c62e1702e6
commit 99f26b1156
1 changed files with 12 additions and 7 deletions
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19
src/map/map_draw.cpp
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@ -261,22 +261,26 @@ void CViewport::DrawMapBackgroundInViewport() const
int ey = this->BottomRightPos.y;
int sy = this->MapPos.y;
int dy = this->TopLeftPos.y - this->Offset.y;
const int map_max = Map.Info.MapWidth * Map.Info.MapHeight;
const int mapW = Map.Info.MapWidth;
const int mapH = Map.Info.MapHeight;
const int map_max = mapW * mapH;
bool canShortcut = FogOfWar->GetType() != FogOfWarTypes::cEnhanced && !ReplayRevealMap;
while (sy < 0) {
sy++;
dy += PixelTileSize.y;
}
sy *= Map.Info.MapWidth;
sy *= mapW;
while (dy <= ey && sy < map_max) {
int sx = this->MapPos.x + sy;
int dx = this->TopLeftPos.x - this->Offset.x;
while (dx <= ex && (sx - sy < Map.Info.MapWidth)) {
while (dx <= ex && (sx - sy < mapW)) {
if (sx - sy < 0) {
++sx;
dx += PixelTileSize.x;
continue;
goto next;
}
if (canShortcut && !FogOfWar->GetVisibilityForTile(Vec2i(sx % mapW, sx / mapH))) {
goto next;
}
const CMapField &mf = Map.Fields[sx];
unsigned short int tile;
@ -318,10 +322,11 @@ void CViewport::DrawMapBackgroundInViewport() const
}
const_cast<CMapField &>(mf).lastAStarCost = alpha | ((uint64_t)1 << 63);
#endif
next:
++sx;
dx += PixelTileSize.x;
}
sy += Map.Info.MapWidth;
sy += mapW;
dy += PixelTileSize.y;
}
if (CViewport::isGridEnabled()) {