Direction Collision(SDL_Rect *a, SDL_Rect *b)
{
int leftA, leftB;
int rightA, rightB;
int topA, topB;
int bottomA, bottomB;
leftA = a->x;
rightA = a->x + a->w;
topA = a->y;
bottomA = a->y + a->h;
leftB = b->x;
rightB = b->x + b->w;
topB = b->y;
bottomB = b->y + b->h;
if (bottomA <= topB ||
topA >= bottomB ||
rightA <= leftB ||
leftA >= rightB)
return NONE;
else
return CollisionSide(a, b);
}
void ZOMBIE::SetCollision(SQUARE &col)
{
collision.x = col.width;
collision.y = col.height;
collision.width = col.x;
collision.height = col.y;
CollisionSide();
}
bool ZOMBIE::CollisionCheck(OBJECT &object)
{
bool temp = false;
//figure out which type of collision to use
switch(type)
{
case 0:
switch(object.GetType())
{
case 0:
if (BoxCollisionCheck(object))
{
collisionDetected = true;
temp = true;
}
break;
case 5:
if (CirleVSSquareCollisionCheck(object.GetPos(), pos, size, object.GetRadius()))
{
//check how far into edge 1 the collision is
collision.x = pos.x + size.x - object.GetPos().x;
//check how far into edge 2 the collision is
collision.width = object.GetPos().x + object.GetRadius() - pos.x;
//check how far into edge 3 the collision is
collision.y = pos.y + size.y - object.GetPos().y;
//check how far into edge 4 the collision is
collision.height = object.GetPos().y + object.GetRadius() - pos.y;
collisionDetected = true;
temp = true;
}
break;
}
break;
case 5:
switch(object.GetType())
{
case 0:
if (CirleVSSquareCollisionCheck(pos, object.GetPos(), object.GetSize(), radius))
{
//check how far into edge 1 the collision is
collision.x = pos.x + radius - object.GetPos().x;
//check how far into edge 2 the collision is
collision.width = object.GetPos().x + object.GetSize().x - pos.x - radius;
//check how far into edge 3 the collision is
collision.y = pos.y + radius - object.GetPos().y;
//check how far into edge 4 the collision is
collision.height = object.GetPos().y + object.GetSize().y - pos.y - radius;
collisionDetected = true;
temp = true;
}
break;
case 5:
if (CirleCollisionCheck(object))
{
collisionDetected = true;
temp = true;
}
break;
}
break;
}
if (temp)
{
if (!collisionside.top || !collisionside.bot || !collisionside.left || !collisionside.right)
{
CollisionSide();
}
}
return temp;
}
