Added WaterMass.
Fixed waterMass
Removed prints
Revert "Removed prints"

This reverts commit 5d91155c1c2fbf6858e4614a6562d6f8c9a4bfcc.

Moved generation of model from render to init
Added loading of waterMass from xml.
Added a separate big tile for world2 with water in the hole.
Added nullchecks to watermass in render.
Added shadows bool for tiles in xml.
Improved Collision detection/handling a bunch. Changed 3.14 to Math.PI.
Added GpuAirParticles. Refactored some shaders. Changed some tiles.
Added top and bottom colors to watermasses. Added unique shader for waterMass, applying color in vert-shader.