Changing the color of geometry within an area without using light.

Unity Engine
1

Is it possible to change the hue of individual textures or override the hue of textures in an area? I want to create a 3d scan effect that colors ground around enemies or objectives by changing the colors of all of the objects within a radius except the enemies or objectives themselves.

Any Idea how I could do this? It also must be able to effect Terrain objects. I want to be able to do things like pulses of color as well.

I guess light might be the best way to go, but I only want it to effect geometry, not enemies or players. I also do not want it to be expensive since every enemy will have this effect on them.

I also don’t think that light will ‘override’ the normal colors enough to get the point across.

2

You can use layers to tell lights what to affect and what to ignore. Also you could probably use a projector.

–Eric

3

Or custom shaders…(adjust color based on world position distance…)

4

Could you use a projector? You can project a semi transparent material onto the ground, and have it only affect terrain/obstacle layers while ignoring enemy/objective layers.

5

I will look into these. I will reply once I have had a chance to do that. As always, thanks for the ideas.