CL2.java

package game;

//LWJGL

import org.lwjgl.LWJGLException;
import org.lwjgl.opengl.Display;
import org.lwjgl.opengl.DisplayMode;
import org.lwjgl.opengl.GL11;
import org.lwjgl.Sys;
import org.lwjgl.input.Keyboard;

public class CL2
{
    private Player player;

    private long lastLoopTime = getTime();
    private static long timerTicksPerSecond = Sys.getTimerResolution();
    public static long delta;
    private long lastFPS;
    private int fps;

    private boolean vsync = false;

    public CL2()
    {
        lastFPS = getTime();
        openGLInit();
        player = new Player(100,475);
        gameLoop();
    }
    private void openGLInit()
    {
        try
        {
            Display.setDisplayMode(new DisplayMode(800,600));
            Display.setFullscreen(false);
            Display.create();

            Display.setVSyncEnabled(false);

            GL11.glEnable(GL11.GL_BLEND);
            GL11.glBlendFunc(GL11.GL_SRC_ALPHA, GL11.GL_ONE_MINUS_SRC_ALPHA);

            GL11.glEnable(GL11.GL_TEXTURE_2D);
            GL11.glDisable(GL11.GL_DEPTH_TEST);

            GL11.glMatrixMode(GL11.GL_PROJECTION);
            GL11.glLoadIdentity();

            GL11.glOrtho(0, 800, 600, 0, -1, 1);
            GL11.glMatrixMode(GL11.GL_MODELVIEW);
            GL11.glLoadIdentity();
            GL11.glViewport(0, 0, 800, 600);

            GL11.glClearColor(.3f, .3f, .3f, 0f);
        }
        catch (LWJGLException le)
        {
            le.printStackTrace();
        }
    }
    private void gameLoop()
    {
        while(!Display.isCloseRequested())
        {
            GL11.glClear(GL11.GL_COLOR_BUFFER_BIT | GL11.GL_DEPTH_BUFFER_BIT);
            GL11.glMatrixMode(GL11.GL_MODELVIEW);
            GL11.glLoadIdentity();

            delta = getTime() - lastLoopTime;
            lastLoopTime = getTime();

            if (getTime() - lastFPS > 1000)
            {
                Display.setTitle("FPS: " + fps);
                fps = 0;
                lastFPS += 1000;
            }
            fps++;

            applyGameControls();        //Take input from keyboard
            moveEntities();             //Move entities
            render();                   //Draw entities

            Display.update();
            Display.sync(60);
        }
        Display.destroy();
        System.exit(0);
    }
    private void moveEntities()
    {
        player.move();
    }
    private void render()
    {
        player.draw();
    }
    private void applyGameControls()
    {
        while (Keyboard.next())
        {
            if(Keyboard.getEventKeyState()) //KEY PRESSED
            {
                if (Keyboard.getEventKey() == Keyboard.KEY_LEFT)
                {
                    player.left(true);
                }
                else if (Keyboard.getEventKey() == Keyboard.KEY_RIGHT)
                {
                    player.right(true);
                }
                else if(Keyboard.getEventKey() == Keyboard.KEY_V)
                {
                    if(vsync)
                    {
                        vsync = false;
                    }
                    else
                    {
                        vsync = true;
                    }
                    Display.setVSyncEnabled(vsync);
                }
            }
            else    //KEY RELEASED
            {
                if (Keyboard.getEventKey() == Keyboard.KEY_LEFT)
                {
                    player.left(false);
                }
                else if (Keyboard.getEventKey() == Keyboard.KEY_RIGHT)
                {
                    player.right(false);
                }
            }
        }
    }
    public static long getTime()
    {
        return (Sys.getTime() * 1000) / timerTicksPerSecond;
    }
    public static void main(String[] args)
    {
        new CL2();
    }
}