Take a look at Half-Life 2. It had support for physics. But unlike the hundreds physics-enabled games before and after it, it actually used it. Physics weren’t just used to animate ragdolls and throw shit away using explosions. Physics were used in puzzles, as a weapon and so on.

The same thing goes for destructible walls. A technical possibility of destroying walls isn’t enough. You need to design gameplay mechanics with wall destruction in mind. You need to show the stupid player moron what you can do with this kind of functionality. You need to have this particular functionality in mind when designing everything. Again in HL2 you could throw back grenades using the gravity gun, destroy choppers with their own mines, use big objects as shields.. All of that was designed WITH PHYSICS IN MIND. Physics weren’t added by the end of the game with “hey players wanted physics so let’s add it!” – that would make physics as redundant as your machineguns.

So.. you can’t just plop in a feature on the last minute and then complain that players are stupid because they don’t use it. You need to have a clear vision and use of a particular gameplay element in mind when designing the rest of the game. Otherwise you get a feature that doesn’t really fit in.

Makron666: heat vision can be done.
I’m not planning destructible walls, that would mean the lighting engine would have to be dynamic. It is possible and I could do that in the future but at the moment LD doesn’t require it.
The cellular automaton will be open for modders, haven’t decided yet in what form. Probably via scripting.

niko šveikovsky: shaders are placed in the Shaders folder. You can do whatever you like. This example is a fullscreen shader.

i must be able to apply saturation adjustments (s_output=s_input*saturation) and contrast (rgb_output=(rgb_input-blacks)*contrast) to the screen.