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// Dark GDK - The Game Creators - www.thegamecreators.com

// the wizard has created a very simple project that uses Dark GDK
// it contains the basic code for a GDK application

// whenever using Dark GDK you must ensure you include the header file
#include "DarkGDK.h"


class Player {

public:

	int X,Y; //Coordinates for top-left corner of player
	int JumpSpeed;
	int Collision[4]; //Collision flags for 4 points on player:
		//0=Top, 1=Right, 2=Bottom, 3=Left

	Player();
	void UpdateColData();
	

};

//Player class constructor
Player::Player() {

		return;
}


//Player class function for updating the players' collision flags
void Player::UpdateColData() {

	//Set the BMP to the collision BMP
	dbSetCurrentBitmap(1);

	//Check for top Collision
	if(dbPoint(X+24,Y-3)==RGB(255,255,255))
		Collision[0]=1;
	else
		Collision[0]=0;

	//Check for right Collision
	if(dbPoint(X+51,Y+40)==RGB(255,255,255))
		Collision[1]=1;
	else
		Collision[1]=0;

	//Check for botton Collision
	if(dbPoint(X+24,Y+83)==dbRGB(255,255,255))
		Collision[2]=1;
	else
		Collision[2]=0;

	//Check for left Collision
	if(dbPoint(X-3,Y+40)==RGB(255,255,255))
		Collision[3]=1;
	else
		Collision[3]=0;

	dbSetCurrentBitmap(0);

	return;
}



// the main entry point for the application is this function
void DarkGDK ( void )
{
	// turn on sync rate and set maximum rate to 60 fps
	dbSyncOn   ( );
	dbSyncRate ( 60 );
	dbRandomize(dbTimer());
	dbSetDisplayMode(640,480,32);

	//Create the Player
	Player Player1;

	//Create a Hidden BMP for collision detection
	dbCreateBitmap(1,640,480);

	//Draw a hidden "Floor" on the collision BMP
	dbSetCurrentBitmap(1);
	dbInk(dbRGB(255,255,255),0);
	dbBox(0,400,639,479);
	
	//Make a Player Image and set a constant variable to that image
	dbGetImage(1,0,400,48,479);
	const int i_Player=1;

	//set current BMP to screen
	dbSetCurrentBitmap(0);

	Player1.X=1; Player1.Y=1;

	// our main loop
	while ( LoopGDK ( ) )
	{
		//paste player image to screen
		dbPasteImage(i_Player,Player1.X,Player1.Y);

		// update the screen
		dbSync ( );
		Player1.UpdateColData();

		//Handle Gravity
		if(Player1.Collision[2]==0) {
			if(Player1.JumpSpeed>(-5))
				Player1.JumpSpeed--;
		}
		else
			Player1.JumpSpeed=0;

		//Move Player according to Jump Speed
		if(Player1.JumpSpeed!=0) {
			Player1.Y-=Player1.JumpSpeed;
		}

		System("CLS");

	}

	// return back to windows
	return;
}

if(dbPoint(X+24,Y-3)==RGB(255,255,255))
		Collision[0]=1;
	else
		Collision[0]=0;

Collision[0] = (int)(dbPoint(X+24,Y-3)==RGB(255,255,255));		

class box{
public:
    box(int x1, int y1, int x2, int y2);

    friend bool collision(box box1, box box2);

    int xPos, yPos;

private:
    int _x1, _y1, _x2, _y2;
};

box::box(int x1, int y1, int x2, int y2) {
    // Requires the top left and bottom right coordinates of a box
    _x1 = x1;
    _y1 = y1;
    _x2 = x2;
    _y2 = y2;

    // These two variables are for positioning reasons
    xPos = 0;
    yPos = 0;
}