//=============================================================================
// Perform collision detection between this entity and the other Entity.
// Each entity must use a single collision type. Complex shapes that require
// multiple collision types may be done by treating each part as a separate
// entity or by using PIXEL_PERFECT collision.
// Typically called once per frame.
// The collision types: CIRCLE, BOX, ROTATED_BOX or PIXEL_PERFECT.
// Post: returns true if collision, false otherwise
// sets collisionVector if collision
//=============================================================================
bool Entity::collidesWith(Entity &ent, VECTOR2 &collisionVector)
{
// if either entity is not active then no collision may occcur
if (!active || !ent.getActive())
return false;
// If both entities are using CIRCLE collision
if (collisionType == entityNS::CIRCLE && ent.getCollisionType() == entityNS::CIRCLE)
return collideCircle(ent, collisionVector);
// If both entities are using BOX collision
if (collisionType == entityNS::BOX && ent.getCollisionType() == entityNS::BOX)
return collideBox(ent, collisionVector);
// All other combinations use separating axis test
// If neither entity uses CIRCLE collision
if (collisionType != entityNS::CIRCLE && ent.getCollisionType() != entityNS::CIRCLE)
return collideRotatedBox(ent, collisionVector);
else // one of the entities is a circle
if (collisionType == entityNS::CIRCLE) // if this entity uses CIRCLE collision
{
// Check for collision from other box with our circle
bool collide = ent.collideRotatedBoxCircle(*this, collisionVector);
// Put the collision vector in the proper direction
collisionVector *= -1; // reverse collision vector
return collide;
}
else // the other entity uses CIRCLE collision
return collideRotatedBoxCircle(ent, collisionVector);
return false;
}
//=============================================================================
// Perform collision detection between this entity and the other Entity.
// Each entity must use a single collision type. Complex shapes that require
// multiple collision types may be done by treating each part as a separate
// entity.
// Typically called once per frame.
// The collision types: CIRCLE, BOX, or ROTATED_BOX.
// Post: returns true if collision, false otherwise
// sets collisionVector if collision
//=============================================================================
bool Entity::collidesWith(Entity &ent, VECTOR2 &collisionVector)
{
// if either entity is not active then no collision may occcur
if (!active || !ent.getActive())
return false;
// If both entities are CIRCLE collision
if (collisionType == entityNS::CIRCLE && ent.getCollisionType() == entityNS::CIRCLE)
return collideCircle(ent, collisionVector);
// If both entities are BOX collision
if (collisionType == entityNS::BOX && ent.getCollisionType() == entityNS::BOX)
return collideBox(ent, collisionVector);
// All other combinations use separating axis test
// If neither entity uses CIRCLE collision
if (collisionType != entityNS::CIRCLE && ent.getCollisionType() != entityNS::CIRCLE)
return collideRotatedBox(ent, collisionVector);
else // one of the entities is a circle
if (collisionType == entityNS::CIRCLE) // if this entity uses CIRCLE collision
return ent.collideRotatedBoxCircle(*this, collisionVector);
else // the other entity uses CIRCLE collision
return collideRotatedBoxCircle(ent, collisionVector);
return false;
}
