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#include "DarkGDK.h"
// the main entry point for the application is this function

// This is for the sprite player
int zeldaYloc=240;
int zeldaXloc=320;
int zeldaFacing=1;

// Constants for Tiles
const int GRASS = 5;

// Constants for Tile Sizes
const int TILE_WIDTH =32;
const int TILE_HEIGHT=32;

//Constants for the Player Sprite Sheet
const int PLAYER = 12;
const int PLAYER_ROWS = 4;
const int PLAYER_COLS = 4;
const int EAST_START = 1;
const int EAST_END = 4;
const int NORTH_START = 5;
const int NORTH_END = 8;
const int SOUTH_START = 9;
const int SOUTH_END = 12;
const int WEST_START = 13;
const int WEST_END = 16;
const int DELAY = 200;

// Constants for direction
const int NORTH = 1;
const int SOUTH = 2;
const int EAST = 3;
const int WEST = 4;

//Refresh Rate
const int REFRESH_RATE = 60;

// Constants for Tile Map Size
const int TILE_ROWS =15;
const int TILE_COLS =20;

// Function Prototypes
void setUp();
void displayTiles(int [][TILE_COLS], int);
bool arrowKeyPressed();
void updateDirection(int &);
void movePlayer(int);

//----------------------------------------------------------------------------------------
// Dark GDK Function.                                                                    -
//----------------------------------------------------------------------------------------
void DarkGDK ( void )
{
	// Here is the Array Map
	int tileMap[TILE_ROWS][TILE_COLS] =
	{ {GRASS,GRASS,GRASS,GRASS,GRASS,GRASS,GRASS,GRASS,GRASS,GRASS,GRASS,GRASS,GRASS,GRASS,GRASS,GRASS,GRASS,GRASS,GRASS,GRASS},
	  {GRASS,GRASS,GRASS,GRASS,GRASS,GRASS,GRASS,GRASS,GRASS,GRASS,GRASS,GRASS,GRASS,GRASS,GRASS,GRASS,GRASS,GRASS,GRASS,GRASS},
	  {GRASS,GRASS,GRASS,GRASS,GRASS,GRASS,GRASS,GRASS,GRASS,GRASS,GRASS,GRASS,GRASS,GRASS,GRASS,GRASS,GRASS,GRASS,GRASS,GRASS},
	  {GRASS,GRASS,GRASS,GRASS,GRASS,GRASS,GRASS,GRASS,GRASS,GRASS,GRASS,GRASS,GRASS,GRASS,GRASS,GRASS,GRASS,GRASS,GRASS,GRASS},
	  {GRASS,GRASS,GRASS,GRASS,GRASS,GRASS,GRASS,GRASS,GRASS,GRASS,GRASS,GRASS,GRASS,GRASS,GRASS,GRASS,GRASS,GRASS,GRASS,GRASS},
	  {GRASS,GRASS,GRASS,GRASS,GRASS,GRASS,GRASS,GRASS,GRASS,GRASS,GRASS,GRASS,GRASS,GRASS,GRASS,GRASS,GRASS,GRASS,GRASS,GRASS},
	  {GRASS,GRASS,GRASS,GRASS,GRASS,GRASS,GRASS,GRASS,GRASS,GRASS,GRASS,GRASS,GRASS,GRASS,GRASS,GRASS,GRASS,GRASS,GRASS,GRASS},
	  {GRASS,GRASS,GRASS,GRASS,GRASS,GRASS,GRASS,GRASS,GRASS,GRASS,GRASS,GRASS,GRASS,GRASS,GRASS,GRASS,GRASS,GRASS,GRASS,GRASS},
	  {GRASS,GRASS,GRASS,GRASS,GRASS,GRASS,GRASS,GRASS,GRASS,GRASS,GRASS,GRASS,GRASS,GRASS,GRASS,GRASS,GRASS,GRASS,GRASS,GRASS},
	  {GRASS,GRASS,GRASS,GRASS,GRASS,GRASS,GRASS,GRASS,GRASS,GRASS,GRASS,GRASS,GRASS,GRASS,GRASS,GRASS,GRASS,GRASS,GRASS,GRASS},
	  {GRASS,GRASS,GRASS,GRASS,GRASS,GRASS,GRASS,GRASS,GRASS,GRASS,GRASS,GRASS,GRASS,GRASS,GRASS,GRASS,GRASS,GRASS,GRASS,GRASS},
	  {GRASS,GRASS,GRASS,GRASS,GRASS,GRASS,GRASS,GRASS,GRASS,GRASS,GRASS,GRASS,GRASS,GRASS,GRASS,GRASS,GRASS,GRASS,GRASS,GRASS},
	  {GRASS,GRASS,GRASS,GRASS,GRASS,GRASS,GRASS,GRASS,GRASS,GRASS,GRASS,GRASS,GRASS,GRASS,GRASS,GRASS,GRASS,GRASS,GRASS,GRASS},
	  {GRASS,GRASS,GRASS,GRASS,GRASS,GRASS,GRASS,GRASS,GRASS,GRASS,GRASS,GRASS,GRASS,GRASS,GRASS,GRASS,GRASS,GRASS,GRASS,GRASS},
	  {GRASS,GRASS,GRASS,GRASS,GRASS,GRASS,GRASS,GRASS,GRASS,GRASS,GRASS,GRASS,GRASS,GRASS,GRASS,GRASS,GRASS,GRASS,GRASS,GRASS}
	};
	
	//Player Start Direction
	int direction = EAST;

	// Perform all Setups
	setUp();

	// Game Loop
	while ( LoopGDK() )
	{
		// Display Tiles
		displayTiles(tileMap, TILE_ROWS);
		updateDirection(direction);
		
		// If Up,Down,Right,or Left keys are pressed
		if ( arrowKeyPressed() )
		{
			// Update the direction.
			updateDirection(direction);

			// Move Player.
			movePlayer(direction);
		}
		
		// Refresh the screen
		dbSync();
		
	}

	

}
//----------------------------------------------------------------------------------------
// setUp Function loads all the images.                                                                    -
//----------------------------------------------------------------------------------------
void setUp()
{
	// Loads the tiles images
	dbLoadImage("grass.bmp", GRASS);

	// Loads the sprites images
	dbSetImageColorKey(255,0,1);

	dbCreateAnimatedSprite(PLAYER, "ZeldaSpriteSheet.bmp", PLAYER_COLS, PLAYER_ROWS, PLAYER);

	dbPlaySprite(PLAYER, EAST_START, EAST_END, DELAY);

	dbSprite(PLAYER, 0, 0, PLAYER);

	dbSyncOn();
	dbSyncRate(REFRESH_RATE);
	
}
//----------------------------------------------------------------------------------------
// Display Tiles Fuction.                                                                    -
//----------------------------------------------------------------------------------------
void displayTiles(int map[][TILE_COLS], int rows)
{
	// Variables for the tile coords
	int x = 0, y = 0;
	
	// Display all the tiles in the map
	for (int r = 0; r < rows; r++)
	{
		// Set x to 0.
		x = 0;
		
		// Display all the tiles in the row.
		for (int c = 0; c < TILE_COLS; c++)
		{
			dbPasteImage( map[r][c], x, y );
			x += TILE_WIDTH;
		}
		
		// Increase Y for next row.
		y += TILE_HEIGHT;
	}
}
bool arrowKeyPressed()
{
	bool status = false;

	if ( dbRightKey() || dbLeftKey() || dbUpKey() || dbDownKey() )
	{
		status = true;
	}
	return status;
}

void updateDirection(int &direction)
{
	if ( dbRightKey() )
	{
		direction = EAST;
	}
	else if ( dbLeftKey() )
	{
		direction = WEST;
	}
	else if ( dbUpKey() )
	{
		direction = NORTH;
	}
	else if ( dbDownKey() )
	{
		direction = SOUTH;
	}
}

void movePlayer(int direction)
{
	int x = dbSpriteX(PLAYER);
	int y = dbSpriteY(PLAYER);

	int startFrame, endFrame;

	switch (direction)
	{
		case NORTH:
			dbPrint("Going North");
			y--;
			startFrame = NORTH_START;
			endFrame = NORTH_END;
			updateDirection(direction);
			break;
		case SOUTH:
			y++;
			startFrame = SOUTH_START;
			endFrame = SOUTH_END;
			updateDirection(direction);
			break;
		case EAST:
			x++;
			startFrame = EAST_START;
			endFrame = EAST_END;
			updateDirection(direction);
			break;
		case WEST:
			x--;
			startFrame = WEST_START;
			endFrame = WEST_END;
			updateDirection(direction);
			break;
	}
	updateDirection(direction);
	dbPlaySprite(PLAYER, startFrame, endFrame, DELAY);

	dbSprite(PLAYER, x, y, PLAYER);
}