Alpha v1

Map :
-Render tiled map.
-Render map objects.

Tower :
-Tower building.
-Tower attacks monster animation.
-Render tower as map objects.

Monster : 
-Render monster as map objects.

Info :
Right click on map to build a tower,
Press key 'A' to summon a monster.
Press key '1' to switch from Main Menu screen to Game Screen.