This update brings some optimizations and a new world type (mountains). The game now uses vertex shader textures, so I had to drop support for some old Radeon cards that don't support this feature.
Change log:
- New world type: mountains.
- Using vertex shader textures for height map and water foam flow (moving some calculations to GPU).
- Smoother nearby land (clamped bicubic interpolation).
- Culling out-of-view land, water and lava.
- Fixed guard tower shooting at mana gatherers.
- Various minor improvements.