If a colour is touched lose

mrcameron999

Hi
i want a rule where if a actor is not surrounded by black then change scene. or if a colour thats not black touches a acto change scene.

tatiang

Describe the game in more detail and provide a sketch or screenshot if possible so that we have some idea of what you're trying to do.

mrcameron999

Ok so i have a circle and you have to click the circle and make it jump over stuff. If it touches and of the objects you lose. But some of the objects are circle so they would touch because the shape is a square

tatiang

Then you would name your actor blackCircle (for example) and have a collision rule for that actor. I assume it's more complicated than that but it's hard to understand without a picture, sorry.

mrcameron999

Here is an illustration

tatiang

So the black circle sits inside the yellow area and if it moves at all then it changes scene? I feel like a detective getting clues...

tatiang

@mrcameron999‌ Oh wait, I think I understand. If the black circle on the left touches the black part of the rectangle actor it's okay but if it touches the yellow it changes scene.

There is no way to check the color of part of an actor but you might be able to have two actors, one a yellow rectangle and one a black oval (with collision shape set to circle) and then in your black circle actor have this rule:

When actor collides with [black actor] -- do nothing --
Otherwise
.....When actor collides with [yellow actor]
.....Change scene

It's not perfect because if the circle actor starts in the black area and then strays into the yellow it won't count as a collision.

mrcameron999

Ok so basically the collision shape is circle but when you touch the collision area which is the yellow bit it changes scene i want it to change scene when you touch the black bit.

tatiang

Since custom collision shapes are not supported, your options are to try my suggestion above or to use some fairly sophisticated math to determine the perimeter of the oval and create rules to check overlap. I'm not going to be able to do that math for you but someone else here might have a suggestion.

mrcameron999

ok thanks for your time