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Reduce screen re-draw area for tunnel/bridge end signal updates

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This commit is contained in:
Jonathan G Rennison
2021-08-30 03:09:01 +01:00
parent f6c2a81f72
commit b08cc3cf38
6 changed files with 91 additions and 14 deletions
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59
src/tunnelbridge_cmd.cpp
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@@ -1894,6 +1894,65 @@ void MarkSingleBridgeSignalDirty(TileIndex tile, TileIndex bridge_start_tile)
);
}
void MarkTunnelBridgeSignalDirty(TileIndex tile, bool exit)
{
if (_signal_sprite_oversized) {
MarkTileDirtyByTile(tile, VMDF_NOT_MAP_MODE);
return;
}
if (IsRailCustomBridgeHeadTile(tile)) {
Trackdir td = exit ? GetTunnelBridgeExitTrackdir(tile) : GetTunnelBridgeEntranceTrackdir(tile);
MarkSingleSignalDirtyAtZ(tile, td, GetTileMaxPixelZ(tile));
return;
}
bool side = (_settings_game.vehicle.road_side != 0) && _settings_game.construction.train_signal_side;
DiagDirection dir = GetTunnelBridgeDirection(tile);
uint position;
switch (dir) {
default: NOT_REACHED();
case DIAGDIR_NE: position = 0; break;
case DIAGDIR_SE: position = 2; break;
case DIAGDIR_SW: position = 1; break;
case DIAGDIR_NW: position = 3; break;
}
static const Point SignalPositions[2][4] = {
{ /* X X Y Y Signals on the left side */
{13, 3}, { 2, 13}, { 3, 4}, {13, 14}
}, {/* X X Y Y Signals on the right side */
{14, 13}, { 3, 3}, {13, 2}, { 3, 13}
}
};
uint x = TileX(tile) * TILE_SIZE + SignalPositions[side != exit][position].x;
uint y = TileY(tile) * TILE_SIZE + SignalPositions[side != exit][position].y;
int z;
if (IsTunnel(tile)) {
z = GetTileZ(tile) * TILE_HEIGHT;
} else {
Slope slope = GetTilePixelSlope(tile, &z);
if (slope == SLOPE_FLAT) {
if (side == exit && dir == DIAGDIR_SE) z += 2;
if (side != exit && dir == DIAGDIR_SW) z += 2;
} else {
z += 8;
}
}
Point pt = RemapCoords(x, y, z);
MarkAllViewportsDirty(
pt.x - SIGNAL_DIRTY_LEFT,
pt.y - SIGNAL_DIRTY_TOP,
pt.x + SIGNAL_DIRTY_RIGHT,
pt.y + SIGNAL_DIRTY_BOTTOM,
VMDF_NOT_MAP_MODE
);
}
/**
* Draws a tunnel of bridge tile.
* For tunnels, this is rather simple, as you only need to draw the entrance.