#include "ObjectManager.h"
#include "WorldManager.h"

void InitObject(VObject * o) {
  o->Position.x = 0.0;
  o->Position.y = 0.0;
  o->Position.z = 0.0;
  o->Front.x = 0.0;
  o->Front.y = 0.0;
  o->Front.z = 1.0;
  o->Right.x = 1.0;
  o->Right.y = 0.0;
  o->Right.z = 0.0;
  o->Up.x = 0.0;
  o->Up.y = 1.0;
  o->Up.z = 0.0;
  o->next = NULL;
  o->Durability = 2;
  o->PowerupType = POWERUPTYPENONE;
  o->PowerupAmount = 0;
  o->taggedForRemoval = 0;
  o->Radius = 0.0;
  o->Billboard = false;
  o->MustBeDestroyed = false;
  InitModel(&o->Model);
}

void CleanUpObject(VObject * o) {
  CleanUpModel(&o->Model);
}

void RunObject(VObject * o, void * world) {
	VWorld * w;
	float shields;
	Boolean wasHit = 0;
	
	w = (VWorld *)world;
	
  if (fabs(((o->Position.x - w->Camera.Position.x) * 
	(o->Position.x - w->Camera.Position.x)) +
	((o->Position.y - w->Camera.Position.y) * 
	(o->Position.y - w->Camera.Position.y)) + 
	((o->Position.z - w->Camera.Position.z) * 
	(o->Position.z - w->Camera.Position.z))) <= 
	(o->Radius + PLAYERSHIPRADIUS)) {
		wasHit = 1;
	  shields = w->Player.Shields;
		DamagePlayer(w, o->Durability);
		o->Durability -= shields;
	}
	if (wasHit) {
		VObjectWrapper * anotherObject;
		anotherObject = GetWrapperByObject(w->Objects, o);
		
		if (anotherObject != NULL) {
		  if (o->Durability <= 0) {
		    anotherObject->exploded = 1;
		    anotherObject->taggedForRemoval = 1;
		  } else {
		    anotherObject->exploded = 2;
		  }
		}
	}
}

void MoveObjectToPoint(VObject * o, Vector * p) {
  o->Position.x = p->x;
  o->Position.y = p->y;
  o->Position.z = p->z;
}

void RotateObject(VObject * o, Vector * r) {
  #pragma unused(o, r) /* How to do this? */
}

void DrawObject(VObject * o) {
  GLfloat matrix[16];
  
  glPushMatrix();
  
  if(o->Billboard)
  {
  	glTranslatef(o->Position.x, o->Position.y, o->Position.z);
		glGetFloatv(GL_MODELVIEW_MATRIX, matrix); 
		matrix[0]=1.0; matrix[1] = 0.0; matrix[2] = 0.0; 
		matrix[4]=0.0; matrix[5] = 1.0; matrix[6] = 0.0; 
		matrix[8]=0.0; matrix[9] = 0.0; matrix[10] = 1.0; 
		glLoadMatrixf(matrix);
		glScalef(3, 3, 1);
	}
	else
	{
	  matrix[0] = o->Right.x;
	  matrix[1] = o->Right.y;
	  matrix[2] = o->Right.z;
	  matrix[3] = 0.0f;
	  matrix[4] = o->Up.x;
	  matrix[5] = o->Up.y;
	  matrix[6] = o->Up.z;
	  matrix[7] = 0.0f;
	  matrix[8] = o->Front.x;
	  matrix[9] = o->Front.y;
	  matrix[10] = o->Front.z;
	  matrix[11] = 0.0f;
	  matrix[12] = 0.0f;
	  matrix[13] = 0.0f;
	  matrix[14] = 0.0;
	  matrix[15] = 1.0f;
	  glTranslatef(o->Position.x, o->Position.y, o->Position.z);
	  glMultMatrixf(matrix);
	}
	DrawModel(&o->Model);
	glPopMatrix();
}

void CalculateRadius(VObject * o) {
  int wVertex;
  float tempRadius;
  
  o->Radius = 0.0;
  for (wVertex = 0; wVertex < o->Model.NumberOfVertices; wVertex++) {
    tempRadius = fabs((o->Model.Vertices[wVertex].x * o->Model.Vertices[wVertex].x) + (o->Model.Vertices[wVertex].y * o->Model.Vertices[wVertex].y) + (o->Model.Vertices[wVertex].z * o->Model.Vertices[wVertex].z));
    if (tempRadius > o->Radius) o->Radius = tempRadius;
  }
}

void CopyObject(VObject * src, VObject * dest) {
  BlockMove(src, dest, sizeof(VObject));
  dest->next = NULL;
}