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Help colouring objects with other objects

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    Help colouring objects with other objects

    Hi, I am making a game in Unreal where the world you start in is greyscale and colourless. Although I want you to be able to colour back in the walls/floor/other objects when they are shot with a projectile.
    I really need it to just color in a small part of the wall with each shot, like in a radius of the impact area rather that the whole mesh

    There is probably a really straight forward method for this but I don't really know what I am looking for. Can anyone suggest any techniques or methods that could help me achieve what I want from this? Thank you so much

    #3
    My take:
    a proper material shader applied on the objects. You can fake different colors with a World Aligned texture. You can make individual areas visible by modifying a Mask at run-time via a Render Target function.
    You can look up the render target tutorials for more info on that
    https://docs.unrealengine.com/en-US/...ets/index.html
    The brush material is then just tied to the projectile/whatever and it simply affects the opacity mask that reveals the color.

    It's not easy, but this is supposed to be a core part of your game-play so it's not supposed to be easy.

    An alternative is Decals. Every projectile hit just spawns a decal. This will end up getting heavy and impossible if the objective is to color in the whole world.

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