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#include "stdafx.h"
#include "Collision.h"

void Collision( float colx, float coly, float colz, int Level )
{
	for ( x=0; x < checks-1; x++ )
	{
		chx = dbNewXValue( colx,x*angwidth,100 );
		chz = dbNewZValue( colz,x*angwidth,100 );
		ang[x][1] = dbIntersectObject( Level,colx,2,colz,chx,coly,chz );
		if ( ang[x][1] == 0 )
		{
			ang[x][1] = 999999;
		}
		ang[x][2] = x*angwidth;
		sort[x][1] = ang[x][1];
		sort[x][2] = ang[x][2];
	}

//   rem sort the array to find the closest object and it's degrees
	for ( x=0; x < checks-2; x++ )
	{
		for ( y=x+1; y < checks-1; y++ )
		{
			if ( ang[x][1]>ang[y][1] )
			{
				temp = ang[x][1];
				temptwo = ang[x][2];
				ang[x][1] = ang[y][1];
				ang[x][2] = ang[y][2];
				ang[y][1] = temp;
				ang[y][2] = temptwo;
			}
		} // end Y
	} // End X


//print "Player Distance to Wall=",ang#(0,1)

//`find +-90 degrees from the closest one for when you walk into a corner so it doesn't shake
	prev = dbWrapValue(ang[0][2]-90)/angwidth;
	nxt = dbWrapValue(ang[0][2]+90)/angwidth;
	newd = radius-ang[0][1];
	newa = dbWrapValue(ang[0][2]-180);
	newd1 = radius - sort[prev][1];
	newa1 = dbWrapValue(sort[prev][2]-180);
	newd2 = radius-sort[nxt][1];
	newa2 = dbWrapValue(sort[nxt][2]-180);

	//`if you are less than radius from a wall, push you out to 20 from it
	if ( ang[0][1] == radius && ang[0][1] == 0.0 )
	{
		repx = dbNewXValue(colx,newa,newd);
		repz = dbNewZValue(colz,newa,newd);
		dbPositionObject ( Player[1].Obj,repx,coly,repz );
	}

	//``````````````````````````````````````````````````
	colx = dbObjectPositionX(Player[1].Obj);
	colz = dbObjectPositionZ(Player[1].Obj);
	if ( sort[prev][1] == radius && sort[prev][1] == 0.0 )
	{
		repx1 = dbNewXValue(colx,newa1,newd1);
		repz1 = dbNewZValue(colz,newa1,newd1);
		dbPositionObject ( Player[1].Obj,repx1,coly,repz1 );
	}

	colx = dbObjectPositionX (Player[1].Obj);
	colz = dbObjectPositionZ (Player[1].Obj);

	//`this is if you are coming into a corner, this pushes you sideways
	if ( sort[nxt][1] == radius && sort[nxt][1] == 0.0 )
	{
		repx2 = dbNewXValue(colx,newa2,newd2);
		repz2 = dbNewZValue(colz,newa2,newd2);
		dbPositionObject ( Player[1].Obj, repx2, coly, repz2 );
	}

// Gravity.
   oldht = coly;
  // rem Finds The Distance From The Camera To The Floor
   sub = dbIntersectObject(Level,colx,oldht,colz,colx,oldht-cameraheight,colz);
   //rem If A Number Smaller Than The Specified Floor Height Is Returned Then...
   if ( sub  < cameraheight )
   {
      cy = (oldht + cameraheight) - sub;
      //rem reposition camera
      dbPositionObject ( Player[1].Obj,colx,cy,colz );
   }
  // rem If The Camera Is Not "Touching" The Floor (i.e. Floor Height + Specified Camera Heght) Then
   if ( sub == 0 )
   {
      //rem reset camera position
      dbPositionObject ( Player[1].Obj,colx,oldht,colz );
   }
}

#ifndef __INTRO_H__
#define __INTRO_H__
// was going to use newton for physics but i decied i need to learn c++ better
// befor i start messing with physics.
#include "Player.h"

void Collision( float colx, float coly, float colz, int Level );

float radius = 20;
int checks = 4;
int angwidth = 360/checks;

float ang[3][2];
float sort[3][2];

float chx;
float chz;

float temp;
float temptwo;

int prev;
int nxt;

float newd;
float newa;
float newd1;
float newa1;
float newd2;
float newa2;

float repx;
float repz;
float repx1;
float repz1;
float repx2;
float repz2;

float oldht;
float cameraheight =20.f;
float sub;
float cy;

int x;
int y;

#endif