(svn r1713) Split off several functions which query/set information about a single tile from map.h and put them into a seperate file tile.h

tile.h

@@ -0,0 +1,43 @@
+#ifndef TILE_H
+#define TILE_H
+
+#include "map.h"
+
+static inline uint TileHeight(TileIndex tile)
+{
+	assert(tile < MapSize());
+	return _map_type_and_height[tile] & 0xf;
+}
+
+static inline void SetTileHeight(TileIndex tile, uint height)
+{
+	assert(tile < MapSize());
+	assert(height < 16);
+	_map_type_and_height[tile] &= ~0x0F;
+	_map_type_and_height[tile] |= height;
+}
+
+static inline uint TilePixelHeight(TileIndex tile)
+{
+	return TileHeight(tile) * 8;
+}
+
+static inline int TileType(TileIndex tile)
+{
+	assert(tile < MapSize());
+	return _map_type_and_height[tile] >> 4;
+}
+
+static inline void SetTileType(TileIndex tile, uint type)
+{
+	assert(tile < MapSize());
+	_map_type_and_height[tile] &= ~0xF0;
+	_map_type_and_height[tile] |= type << 4;
+}
+
+static inline bool IsTileType(TileIndex tile, int type)
+{
+	return TileType(tile) == type;
+}
+
+#endif