Function DrawWaterLock

src/water_cmd.cpp:840–876

Draw a lock tile. */

/** Draw a lock tile. */
static void DrawWaterLock(const TileInfo *ti)
{
	LockPart part = GetLockPart(ti->tile);
	const DrawTileSprites &dts = _lock_display_data[to_underlying(part)][GetLockDirection(ti->tile)];

	/* Draw ground sprite. */
	SpriteID image = dts.ground.sprite;

	SpriteID water_base = GetCanalSprite(CF_WATERSLOPE, ti->tile);
	if (water_base == 0) {
		/* Use default sprites. */
		water_base = SPR_CANALS_BASE;
	} else if (HasBit(_water_feature[CF_WATERSLOPE].flags, CFF_HAS_FLAT_SPRITE)) {
		/* NewGRF supplies a flat sprite as first sprite. */
		if (image == SPR_FLAT_WATER_TILE) {
			image = water_base;
		} else {
			image++;
		}
	}

	if (image < 5) image += water_base;
	DrawGroundSprite(image, PAL_NONE);

	/* Draw structures. */
	uint     zoffs = 0;
	SpriteID base  = GetCanalSprite(CF_LOCKS, ti->tile);

	if (base == 0) {
		/* If no custom graphics, use defaults. */
		base = SPR_LOCK_BASE;
		uint8_t z_threshold = part == LockPart::Upper ? 8 : 0;
		zoffs = ti->z > z_threshold ? 24 : 0;
	}

	DrawWaterTileStruct(ti, dts.GetSequence(), base, zoffs, PAL_NONE, CF_LOCKS);
}

/** Draw a ship depot tile. */
static void DrawWaterDepot(const TileInfo *ti)