#include <world.h>
struct CollisionEvent collisionDetect(int objYpos, int objXpos){
	int i;
	for(i=1; i<MAX_ENTITIES; i++){
		if(allEntities[i].isAlive){
			if(objYpos==allEntities[i].curYpos && objXpos==allEntities[i].curXpos){
				struct CollisionEvent collisionEvent = {.collidedWithEntity=&allEntities[i]};
				return collisionEvent;
			}
		}
	}
	for(i=0; i<MAX_ITEMS; i++){
		if(allItems[i].isAlive){
			if(objYpos==allItems[i].curYpos && objXpos==allItems[i].curXpos){
				struct CollisionEvent collisionEvent = {.collidedWithItem=&allItems[i]};
				return collisionEvent;
			}
		}
	}
	struct CollisionEvent collisionEvent = {.collidedWithItem=0,.collidedWithEntity=0};
	return collisionEvent;
}

void checkProjectileCollision(struct Projectile *projectileRef ){
	struct CollisionEvent collisionEvent = collisionDetect(projectileRef->curYpos, projectileRef->curXpos);
	if(collisionEvent.collidedWithEntity){
		if(!strcmp(collisionEvent.collidedWithEntity->type,"zombie")){
			projectileRef->isAlive=0;
			collisionEvent.collidedWithEntity->isAlive=0;
			allEntities[0].killCount++;
			allEntities[0].hitCount++;
			if (allEntities[0].killCount != 0 && allEntities[0].killCount%5==0){
				itemModifier++;
				if(zombieModifier>5){
					zombieModifier-=5;
				}
			}
		}
	}
}

void checkPlayerCollision(){
	struct CollisionEvent collisionEvent = collisionDetect(allEntities[0].curYpos, allEntities[0].curXpos);
	if(collisionEvent.collidedWithEntity){
		if(!strcmp(collisionEvent.collidedWithEntity->type,"zombie")){
			collisionEvent.collidedWithEntity->isAlive=0;
			drawGameOverWin();
		}			
	}
	if(collisionEvent.collidedWithItem){
		if(!strcmp(collisionEvent.collidedWithItem->type,"Pistol Magazine")){
			if(allEntities[0].weapons[1].isAlive){
				addMagazine(&allEntities[0].weapons[1]);
				collisionEvent.collidedWithItem->isAlive=0;
			}
		}			
	}
}