Create makeTileRubbleTexture() to set tiles to a rubble texture

src/feature.cpp

@@ -546,7 +546,9 @@ bool destroyFeature(FEATURE *psDel, unsigned impactTime)
 		{
 			for (int width = 0; width < b.size.x; ++width)
 			{
-				MAPTILE *psTile = mapTile(b.map.x + width, b.map.y + breadth);
+				const unsigned int x = b.map.x + width;
+				const unsigned int y = b.map.y + breadth;
+				MAPTILE *psTile = mapTile(x, y);
 				// stops water texture changing for underwater features
 				if (terrainType(psTile) != TER_WATER)
 				{
@@ -555,22 +557,18 @@ bool destroyFeature(FEATURE *psDel, unsigned impactTime)
 						/* Clear feature bits */
 						if (isUrban)
 						{
-							psTile->texture = TileNumber_texture(psTile->texture) | RUBBLE_TILE;
-							SET_TILE_DECAL(psTile);
-							markTileDirty(b.map.x + width, b.map.y + breadth);
+							makeTileRubbleTexture(psTile, x, y, RUBBLE_TILE);
 						}
-						auxClearBlocking(b.map.x + width, b.map.y + breadth, AUXBITS_ALL);
+						auxClearBlocking(x, y, AUXBITS_ALL);
 					}
 					else
 					{
 						/* This remains a blocking tile */
 						psTile->psObject = nullptr;
-						auxClearBlocking(b.map.x + width, b.map.y + breadth, AIR_BLOCKED);  // Shouldn't remain blocking for air units, however.
+						auxClearBlocking(x, y, AIR_BLOCKED);  // Shouldn't remain blocking for air units, however.
 						if (isUrban)
 						{
-							psTile->texture = TileNumber_texture(psTile->texture) | BLOCKING_RUBBLE_TILE;
-							SET_TILE_DECAL(psTile);
-							markTileDirty(b.map.x + width, b.map.y + breadth);
+							makeTileRubbleTexture(psTile, x, y, BLOCKING_RUBBLE_TILE);
 						}
 					}
 				}

src/map.h

@@ -524,6 +524,13 @@ WZ_DECL_ALWAYS_INLINE static inline bool worldOnMap(Vector2i pos)
 	return worldOnMap(pos.x, pos.y);
 }
 
+static inline void makeTileRubbleTexture(MAPTILE *psTile, const unsigned int x, const unsigned int y, const unsigned int newTexture)
+{
+	psTile->texture = TileNumber_texture(psTile->texture) | newTexture;
+	SET_TILE_DECAL(psTile);
+	markTileDirty(x, y);
+}
+
 
 /* Intersect a line with the map and report tile intersection points */
 bool map_Intersect(int *Cx, int *Cy, int *Vx, int *Vy, int *Sx, int *Sy);