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(svn r24715) -Fix [FS#5335]: [NewGRF] Allow stations to draw snow/desert aware ground sprites with railtype overlays.

This commit is contained in:
frosch 2012-11-12 20:13:34 +00:00
parent f3be01c26f
commit 96540079e7
1 changed files with 66 additions and 7 deletions
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73
src/station_cmd.cpp
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@ -2550,6 +2550,63 @@ const DrawTileSprites *GetStationTileLayout(StationType st, byte gfx)
return &_station_display_datas[st][gfx];
}
/**
* Check whether a sprite is a track sprite, which can be replaced by a non-track ground sprite and a rail overlay.
* If the ground sprite is suitable, \a ground is replaced with the new non-track ground sprite, and \a overlay_offset
* is set to the overlay to draw.
* @param ti Positional info for the tile to decide snowyness etc. May be NULL.
* @param [in,out] ground Groundsprite to draw.
* @param [out] overlay_offset Overlay to draw.
* @return true if overlay can be drawn.
*/
static bool SplitGroundSpriteForOverlay(const TileInfo *ti, SpriteID *ground, RailTrackOffset *overlay_offset)
{
bool snow_desert;
switch (*ground) {
case SPR_RAIL_TRACK_X:
snow_desert = false;
*overlay_offset = RTO_X;
break;
case SPR_RAIL_TRACK_Y:
snow_desert = false;
*overlay_offset = RTO_Y;
break;
case SPR_RAIL_TRACK_X_SNOW:
snow_desert = true;
*overlay_offset = RTO_X;
break;
case SPR_RAIL_TRACK_Y_SNOW:
snow_desert = true;
*overlay_offset = RTO_Y;
break;
default:
return false;
}
if (ti != NULL) {
/* Decide snow/desert from tile */
switch (_settings_game.game_creation.landscape) {
case LT_ARCTIC:
snow_desert = ti->z > GetSnowLine();
break;
case LT_TROPIC:
snow_desert = GetTropicZone(ti->tile) == TROPICZONE_DESERT;
break;
default:
break;
}
}
*ground = snow_desert ? SPR_FLAT_SNOW_DESERT_TILE : SPR_FLAT_GRASS_TILE;
return true;
}
static void DrawTile_Station(TileInfo *ti)
{
const NewGRFSpriteLayout *layout = NULL;
@ -2753,14 +2810,15 @@ draw_default_foundation:
SpriteID image = t->ground.sprite;
PaletteID pal = t->ground.pal;
if (rti != NULL && rti->UsesOverlay() && (image == SPR_RAIL_TRACK_X || image == SPR_RAIL_TRACK_Y)) {
RailTrackOffset overlay_offset;
if (rti != NULL && rti->UsesOverlay() && SplitGroundSpriteForOverlay(ti, &image, &overlay_offset)) {
SpriteID ground = GetCustomRailSprite(rti, ti->tile, RTSG_GROUND);
DrawGroundSprite(SPR_FLAT_GRASS_TILE, PAL_NONE);
DrawGroundSprite(ground + (image == SPR_RAIL_TRACK_X ? RTO_X : RTO_Y), PAL_NONE);
DrawGroundSprite(image, PAL_NONE);
DrawGroundSprite(ground + overlay_offset, PAL_NONE);
if (_game_mode != GM_MENU && _settings_client.gui.show_track_reservation && HasStationReservation(ti->tile)) {
SpriteID overlay = GetCustomRailSprite(rti, ti->tile, RTSG_OVERLAY);
DrawGroundSprite(overlay + (image == SPR_RAIL_TRACK_X ? RTO_X : RTO_Y), PALETTE_CRASH);
DrawGroundSprite(overlay + overlay_offset, PALETTE_CRASH);
}
} else {
image += HasBit(image, SPRITE_MODIFIER_CUSTOM_SPRITE) ? ground_relocation : total_offset;
@ -2804,10 +2862,11 @@ void StationPickerDrawSprite(int x, int y, StationType st, RailType railtype, Ro
}
SpriteID img = t->ground.sprite;
if ((img == SPR_RAIL_TRACK_X || img == SPR_RAIL_TRACK_Y) && rti->UsesOverlay()) {
RailTrackOffset overlay_offset;
if (rti->UsesOverlay() && SplitGroundSpriteForOverlay(NULL, &img, &overlay_offset)) {
SpriteID ground = GetCustomRailSprite(rti, INVALID_TILE, RTSG_GROUND);
DrawSprite(SPR_FLAT_GRASS_TILE, PAL_NONE, x, y);
DrawSprite(ground + (img == SPR_RAIL_TRACK_X ? RTO_X : RTO_Y), PAL_NONE, x, y);
DrawSprite(img, PAL_NONE, x, y);
DrawSprite(ground + overlay_offset, PAL_NONE, x, y);
} else {
DrawSprite(img + total_offset, HasBit(img, PALETTE_MODIFIER_COLOUR) ? pal : PAL_NONE, x, y);
}