Directional light and caves

Hi. How can I darken my cave without using the shadows? Im using a directional light. Thanks in advance.

 

Setting the ambient light amount to zero in Render Settings should help.

 

Doesn't work... I setted Ambient Light to Black (0, 0, 0, 0)

 

It's a voxel terrain... I cant :/

 

Try changing the directional light to a spotlight or point light instead. Then you can set the range of the light to darken the cave by attenuation.

 

Any advice on how to start to develop it?

 

A good first step would be to try to figure out when the player is in an enclosed space. The easiest approximation of that would be to randomly fire rays towards the sky as the player moves around. If enough of those rays hit something, then it's a good guess that the player is inside. When the player is inside, ramp the intensity of the sun light down.

 

Could I implement the Physics.SphereCast, or you think it's better to use Physics.Raycast?

Thank you for the reply

 

Raycast is likely to be a lot cheaper, esp since you'll want to fire multiple rays per frame.

 

mmm... I like this approach to the problem. I created a script in wich foreach frame it create 256 ray. Based, then, the number of rays that strike a block of voxels world, it increases or decreases the brightness. It make also particular effect like dark luminosity near big mountains.

 

Glad you like it! It's inspired by Monte Carlo Integration.