/*
Modified from original.
Now invisible sprites may still collide.
*/
void Engine::TestForCollisions()
{
bool didCollisionOccur = false;
std::list<Entity*>::iterator first;
std::list<Entity*>::iterator second;
Sprite *sprite1;
Sprite *sprite2;
first = p_entities.begin();
while (first != p_entities.end() )
{
//we only care about sprite collisions
if ( (*first)->getRenderType() == RENDER_2D )
{
//point local sprite to sprite contained in the list
sprite1 = (Sprite*) *first;
//if this entity is alive and visible...
//if ( sprite1->getAlive() && sprite1->getVisible() && sprite1->isCollidable() )
if ( sprite1->getAlive() && sprite1->isCollidable() )
{
//test all other entities for collision
second = p_entities.begin();
while (second != p_entities.end() )
{
//point local sprite to sprite contained in the list
sprite2 = (Sprite*) *second;
//if other entity is active and not same as first entity...
//if ( sprite2->getAlive() && sprite2->getVisible() && sprite2->isCollidable() && sprite1 != sprite2 )
if ( sprite2->getAlive() && sprite2->isCollidable() && sprite1 != sprite2 )
{
//test for collision
if ( collision(sprite1, sprite2 ) )
{
//notify game of collision
game_entityCollision( sprite1, sprite2 );
didCollisionOccur = true;
break;
}
}
//go to the next sprite in the list
second++;
}
}
//go to the next sprite in the list
if (didCollisionOccur) break;
first++;
}//render2d
} //while
}
void Engine::TestForCollisions()
{
std::list<Entity*>::iterator first;
std::list<Entity*>::iterator second;
Sprite *sprite1;
Sprite *sprite2;
first = p_entities.begin();
while (first != p_entities.end() )
{
//we only care about sprite collisions
if ( (*first)->getRenderType() == RENDER2D )
{
//point local sprite to sprite contained in the list
sprite1 = (Sprite*) *first;
//*****CHAPTER 9 -- ADDED COLLISION PROPERTY, NEED TO UPDATE CHAPTER 3
//if this entity is alive and visible...
//***optimization--collider property
if ( sprite1->getAlive() && sprite1->getVisible() && sprite1->isCollidable() && sprite1->isCollider() )
{
//test all other entities for collision
second = p_entities.begin();
while (second != p_entities.end() )
{
//point local sprite to sprite contained in the list
sprite2 = (Sprite*) *second;
//*****CHAPTER 9 -- ADDED COLLISION PROPERTY, NEED TO UPDATE CHAPTER 3
//if other entity is active and not same as first entity...
if ( sprite2->getAlive() && sprite2->getVisible() && sprite2->isCollidable() && sprite1 != sprite2 )
{
//test for collision
if ( collision(sprite1, sprite2 ) ) {
//notify game of collision
game_entityCollision( sprite1, sprite2 );
}
}
//go to the next sprite in the list
second++;
}
}
//go to the next sprite in the list
first++;
}//render2d
} //while
}
