TODO:
- GLSL Water
- Animated monsters
- Fix particle system
- Monsters able to destroy base
- Add in new gun graphics (mesh + textures)


FIXED:
- Fix camera spawnpoint
- Make perimeter only show when tower is selected
- Rotate to target heads/guns
- Simple sine-based GLSL water
- Enable game finished
- Enable score spending restricting tower building
- Allow Grid cells to be marked as occupied (f.ex the monster path)
- Add score spending for upgrades


THROWN OUT:
- Cuda Water
- Rotate to direction critters
- New path and spawnpoint