Rain effect based on Tase's code.
Working rain before performance changes.
Improved rain draw performance on w_terrain window.
Dont rain all the time ...
Rain effect caused game slowdown after a while on the same tile.
Max terrain width/height 121 (Viewdistance). Center terrain if Viewport X/Y > 60.
Merge branch 'refs/heads/rain'
Modified menues to match max terrainX/Y 121
Main menu preset character up/down movement fix.