Instant Collision Feedback

[gamecreator]

Is there a way to instantly know if two entities or two bodies are colliding without using EntityCollisionCallback? I'm trying to do something like this:

 

//  Move entity forward 2 spaces
PositionEntity(entity1,Vec3(2,0,0),1);

//  If it collides with something
if(EntitiesAreColliding(entity1,entity2))
{
  //  Move entity forward 1 space
  PositionEntity(entity1,Vec3(1,0,0),1);

  //  If it still collides with something
  if(EntitiesAreColliding(entity1,entity2))
  {
     //  Don't move entity
     PositionEntity(entity1,Vec3(0,0,0),1);
  }
}

[Canardia]

Just make your own EntitiesAreColliding function which checks from a STL map, which is populated by the EntityCollisionCallback function, if the two entities are colliding.

[gamecreator]

Thanks.

[Rick]

Just curious, but why do you want to do that? You should be able to get the same type thing using the callback.

[Josh]

The reason the engine doesn't store a list of collisions is because it can result in hundreds of dynamic allocations of memory each physics update, most of which will be unneeded.

[gamecreator]

I'm manually checking if the character can move forward, or up a hill, or down a hill or if it bumps into a wall.

 

 

Let's say I need to move the character over 10 spaces this frame. I first check if it can move over 1 space. If it can, I move it. Then I check the next space. So on. I think it would be a waste to use EntityCollisionCallback because I would have to pass it dozens of possible situations, each through an individual (so dozens) of entities, if I understand its use correctly.

 

I'm probably doing this the hard way though.