How do I create a system [SOLVED]

How do I create this effect?

You could look up flood-fill. I just made a similar example over here:

You want to recursively test each direction until you hit a wall.

I didn't understand that example very well

You might forget that simple flood-fill (about 3 events) can achieve the mechanic:

alextro I don't think he will understand that

alextro

Do you have a capx as an example?

Flood.capx

FlowNoFlood.capx

korbaach Good work. You always come up so well. Wonderful work

korbaach,

I really appreciate your help. Thank you very much!!!