I need help with an Echolocation Effect

[Cotaks (- Click for (UP)Bge resources)]

@sdfgeoff has made an echolocation shader, could be used to learn from.

Sdfgeoff's node shaders and other experiments

“Echolocation” was the inspiration Currently it only supports a single source, though I have thought of a change that would make it not need the light node (using the diffuse channel of the material), and hence be a bit more flexible in use. Blend: Cave.blend (673 KB) Controls are “W” for forwards and mouse-click to let out a “ping”