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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() {
		JumpSpeed=0;
		return;
}

void Player::UpdateColData() {

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

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

	//Check for right Collision
	if(dbPoint(X+51,Y+40)==dbRGB(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)==dbRGB(255,255,255))
		Collision[3]=1;
	else
		Collision[3]=0;

	dbSetCurrentBitmap(0);

	return;
}




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

		dbCLS(0);
		
	}

	// return back to windows
	return;
}


void Input() {


		//Jumping
		if(dbUpkey()==1) {
			if(Player1.collision[0]==0)
				Player1.jumpspeed=5;
		}


	return;
}