a lot to be done — Space Mantlet Steam update #2245

whats new : 3rd mission intro shield effect better terrain to unit distinction. fix composition, resize vegetation. on progress i was struggling to make characters to look better. spend too much time on skin shader, the spot between fast and good is hard to hit. Turrets, need a lot of turrets type for the base defense mission destructible structures and buildings game saving. i thought saving game required when we tackle multiplayer, storing objects to tiny integers and stores as deltas or transmit as scene changes. I think we need it now for the harder mission to come.