Collision Point Expressions

GDevelop general Feature requests
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1

It would be really nice to have something like an expression thats like Object1.CollisionPointX(Object2) and ofc Object1.CollisionPointY(Object2)

How it would work

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Object1.CollisionPointX(Object2)
Object1.CollisionPointY(Object2)
Object1.CollisionPointRightX(Object2)
Object1.CollisionPointUpY(Object2)
Object1.CollisionPointLeftX(Object2)
Object1.CollisionPointDownY(Object2)

What would happen if its not just edges touching

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How you could implement it:

https://games.gdevelop-app.com/game-9776f2a7-ecd2-4750-93f3-fb57a32183ad/index.html?userSlug=cokiesyum&gameSlug=collision-points-example

Additional:

Object1.CollisionArea(Object2) - This shows the area of where its touching
Object1.CollisionLength(Object2, x or y) - This shows the lenght of either the x or y

4 Likes
2

I get what you are asking for and can see how it being useful or even life saver in some scenarios
Instead of your approach i would go with

Object1.CollisionPointXLeft(Object2)
Object1.CollisionPointXCenter(Object2)
Object1.CollisionPointXRight(Object2)

Object1.CollisionPointYTop(Object2)
Object1.CollisionPointYCenter(Object2)
Object1.CollisionPointYBottom(Object2)

1 Like
3

That’s really cool idea

1 Like
4

Yess! but it should even work with collisions with the same instance

5

Hi, is this to check if object1 is in collision with object2 on its top, bottom, left or right side?

6

Almost !! :DD its to see where its touching :DD

7

So to get the exact point it’s touching

8

I prefer something like tagging collision masks.
For example, a collision mask for the “head” and a collision mask for the “foot”, and if the “head” collision mask is in collision with the “foot” collision mask of another object, damage occurs.

9

Remember folks, one feature request per thread so it doesn’t get lost (and to adhere to the forum rules)

@EyadMahm0ud , what you are asking for is uniquely addressable collision masks, which is outside of what is being asked in this thread, but I think this other features request might be closer to what you are looking for. Handle multiple collision masks independently - #2 by Rasterisko

1 Like