// @author Fernando Hideki Mohara
// UNICAMP-FT - Faculdade de Tecnologia 
// RA 091183
// Project 1 - Maze

package f091183.mohara.jogl.maze;

import java.awt.event.KeyAdapter;
import java.awt.event.KeyEvent;
import java.awt.event.KeyListener;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import javax.media.opengl.GL2;
import javax.media.opengl.GLAutoDrawable;
import javax.media.opengl.GLEventListener;
import javax.media.opengl.awt.ComponentEvents;
//import javax.media.opengl.glu.GLU;
 
class Renderer implements GLEventListener, KeyListener
{
	static final public char[] maze = {'w','w','w','w','w', 'w','w','w','w','w', 'w','w','w','w','w', 'w','w','w','w','w',
									   'w',' ',' ',' ',' ', ' ',' ',' ',' ',' ', ' ',' ',' ',' ','w', ' ',' ',' ',' ','S',
									   'w',' ','w','w','w', 'w','w','w','w',' ', 'w',' ','w',' ',' ', ' ','w',' ','w','w',
									   'w',' ',' ','w',' ', ' ',' ',' ','w',' ', ' ',' ','w',' ','w', ' ','w','w','w','w',
									   'w',' ','w','w','w', 'w',' ','w','w','w', 'w','w','w','w','w', 'w','w',' ',' ','w',							   
						 /*ln 5*/	   'w',' ',' ',' ',' ', ' ',' ',' ',' ',' ', ' ',' ',' ',' ',' ', ' ','w','w',' ','w',
									   'w','w','w','w','w', 'w','w','w','w','w', 'w','w','w','w','w', ' ','w',' ',' ','w',
									   'w',' ',' ',' ',' ', ' ',' ',' ',' ',' ', ' ',' ',' ',' ','w', ' ','w','w',' ','w',
									   'w',' ','w',' ','w', 'w','w','w','w','w', 'w','w','w',' ',' ', ' ',' ','w',' ','w',
									   'w',' ','w',' ',' ',	' ',' ',' ',' ',' ', ' ',' ','w','w','w', 'w','w','w',' ','w',
							/*ln 10*/  'w',' ','w',' ','w', 'w','w','w','w','w', 'w',' ','w',' ',' ', ' ',' ',' ',' ','w',
									   'w',' ','w','w','w', ' ',' ',' ',' ',' ', 'w',' ','w',' ','w', 'w','w','w','w','w',
									   'w',' ',' ',' ',' ', ' ','w','w','w',' ', 'w',' ','w',' ',' ', ' ',' ',' ',' ','w',
									   'w','w','w','w','w', 'w','w',' ','w',' ', 'w',' ','w','w','w', ' ','w','w',' ','w',
									   'w',' ',' ',' ',' ', ' ',' ',' ','w',' ', 'w',' ','w',' ',' ', ' ','w',' ',' ','w',
					      /*ln 15*/    'w',' ','w','w',' ', 'w','w','w','w',' ', 'w',' ','w',' ','w', 'w','w','w','w','w',
									   'w',' ',' ','w',' ', 'w',' ',' ',' ',' ', 'w',' ','w',' ',' ', ' ','w',' ',' ','w',
									   'w','w',' ','w',' ', 'w','w','w','w',' ', 'w',' ','w','w','w', ' ','w','w',' ','w',
									   'w',' ',' ','w',' ', ' ',' ',' ',' ',' ', 'w',' ',' ',' ',' ', ' ',' ',' ',' ','w',
									   'w','E','w','w','w', 'w','w','w','w','w', 'w','w','w','w','w', 'w','w','w','w','w',
										}; //		      y 5				  y 10					y 15
	public static MoveControl player = new MoveControl();
    
	// Canvas initialization
	public void init(GLAutoDrawable gLDrawable) 
    {  	
    	System.out.println("init() called");
        GL2 gl = gLDrawable.getGL().getGL2();
        gl.glClearColor(0.0f, 0.0f, 0.0f, 1.0f );
        gl.glClear(GL2.GL_COLOR_BUFFER_BIT | GL2.GL_DEPTH_BUFFER_BIT);
        
    }
    
    // Canvas action
    public void display(GLAutoDrawable gLDrawable) 
    {	
    	update(gLDrawable);
        render(gLDrawable);
    } 
    
    // Reads the changes in the screen
    private void update(GLAutoDrawable gLDrawable)
    {
    	double move = 0.00833333333;
    	int mazeXY=0;
 	
 	 /*	
    	player.setPlayerY(Math.round( (player.getPlayerY()-move) * 10000.0 ) / 10000.0);
     */
    	System.out.println("pY: " + player.getPlayerY());
    	// Position of player in maze. Checking for wall after >>move Y-<<
    	for(double counterX=0.9; counterX >=-1; counterX=counterX-0.1) 
    	{
     	
    		for(double counterY=0.9; counterY >=-1; counterY=counterY-0.1, mazeXY++) 
    		{
     				double XP = Math.round(player.getPlayerX()* 100.0 ) / 100.0;
     				double XC = Math.round(counterX*100.0) / 100.0;
     				double YP = Math.round(player.getPlayerY()* 100.0 ) / 100.0;
     				double YC = Math.round(counterY*100.0) / 100.0;
     				if( (XP == XC) && (YP == YC)) 
     				{
     					if(maze[mazeXY+20]== 'w')
     					{
     						player.setPlayerY(Math.round( (player.getPlayerY()+move) * 10000.0 ) / 10000.0);
     					}
     			
     				}
 			
    		}
    	}
    }

	// Rends the canvas
    private void render(GLAutoDrawable gLDrawable)
    {
        GL2 gl = gLDrawable.getGL().getGL2();
        int mazeXY=0;
        
        // CLear screen
        gl.glClearColor(0.0f, 0.0f, 0.0f, 1.0f );
        gl.glClear(GL2.GL_COLOR_BUFFER_BIT | GL2.GL_DEPTH_BUFFER_BIT);
        gl.glLoadIdentity();

        // Draw the maze with walls
        for(double counterX=0.9; counterX >=-1; counterX=counterX-0.1) 
        {
        	
        	for(double counterY=0.9; counterY >=-1; counterY=counterY-0.1, mazeXY++) 
            {
        		// Check if position is a wall
        		if(maze[mazeXY]=='w')
        		{
	        		//The wall
	            	gl.glTranslated(0.05, 0.05, 0);
	        		gl.glBegin(GL2.GL_QUADS);
	            	gl.glColor3f(1, 0, 0);
	            	gl.glVertex2d(counterX-0.05, counterY-0.05); 	// [ - ; - ]
	        		gl.glColor3f(0, 0, 1);
	        		gl.glVertex2d(counterX+0.05, counterY-0.05);  	// [ + ; - ]
			        gl.glColor3f(1, 1, 0);
			        gl.glVertex2d(counterX+0.05, counterY+0.05);   	// [ + ; + ]
			        gl.glColor3f(0, 1, 0);
			        gl.glVertex2d(counterX-0.05, counterY+0.05);  	// [ - ; + ]
        		}
            }       	
        }
        
      //The wall
    	gl.glTranslated(0.05, 0.05, 0);
		gl.glBegin(GL2.GL_QUADS);
    	gl.glColor3f(1, 1, 1);
    	gl.glVertex2d(player.getPlayerX()-0.033, player.getPlayerY()-0.033); 	// [ - ; - ]
		gl.glVertex2d(player.getPlayerX()+0.033, player.getPlayerY()-0.033);  	// [ + ; - ]
        gl.glVertex2d(player.getPlayerX()+0.033, player.getPlayerY()+0.033);   	// [ + ; + ]
        gl.glVertex2d(player.getPlayerX()-0.033, player.getPlayerY()+0.033);  	// [ - ; + ]
        
        gl.glFlush();
        gl.glEnd();
    }
 
 
    public void displayChanged(GLAutoDrawable gLDrawable, boolean modeChanged, boolean deviceChanged) 
    {}
 
    // Reshape canvas
    public void reshape(GLAutoDrawable gLDrawable, int x, int y, int width, int height) 
    {
    	/*System.out.println("reshape() called: x = "+x+", y = "+y+", width = "+width+", height = "+height);
        final GL2 gl = gLDrawable.getGL().getGL2();
 
        if (height <= 0) // avoid a divide by zero error!
        {
            height = 1;
        }
 
        final float h = (float) width / (float) height;
 
        gl.glViewport(0, 0, width, height);
        gl.glMatrixMode(GL2.GL_PROJECTION);
        gl.glLoadIdentity();
        gl.glPerspective(45.0f, h, 1.0, 20.0);
        gl.glMatrixMode(GL2.GL_MODELVIEW);
        gl.glLoadIdentity();*/
    }
 
	public void dispose(GLAutoDrawable arg0) 
	{}

	@Override
	public void keyTyped(KeyEvent paramKeyEvent) 
	{	}

	@Override
	public void keyPressed(KeyEvent e) 
	{
		
    		if(e.getKeyCode()==KeyEvent.VK_S)
    		{
    			double move=0.00833333333;
    			
				player.setPlayerY(Math.round( (player.getPlayerY()-move) * 10000.0 ) / 10000.0);
    		}
		
	}

	@Override
	public void keyReleased(KeyEvent paramKeyEvent) {
		// TODO Auto-generated method stub
		
	}

}