Question

I have 3 sprites A, B, and C.

A and C are objects…

B is Enemy sprites… so the design is below. I need B to move continously between A and C.

A———-B———-C

I use the below method in an Update method. So that methods gets called for each frame.

ABcollision
{
if(Aistouched == YES)
{
Bvelocity.x = 5;  /// moves my sprite B right side
}
}

CBcollision
{
if(Cistouched == YES)
{
Bvelocity.x = -5; /// moves my sprite B right side
}
}

My update method to update velocity:

   b2Vec2 dins = dinobody->GetLinearVelocity();
   dinobody->SetLinearVelocity(Bvelocity);

The above code makes my sprite B move left and right only once.

Answer 1

I believe that the problem when it only works once is because you never reset your BOOLs from what I can tell. Aistouched and Cistouched. Try adding Aistouched = FALSE right after your set the Bvelocity.x = 5; and same for C.