main.DisplayManager.java Source code

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Here is the source code for main.DisplayManager.java

Source

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package main;

import java.util.logging.Level;
import java.util.logging.Logger;
import org.lwjgl.LWJGLException;
import org.lwjgl.Sys;
import org.lwjgl.opengl.ContextAttribs;
import org.lwjgl.opengl.Display;
import org.lwjgl.opengl.DisplayMode;
import org.lwjgl.opengl.GL11;
import org.lwjgl.opengl.PixelFormat;

/**
 *
 * @author PC
 */
public class DisplayManager {
    private static final int WIDTH = 1280;
    private static final int HEIGHT = 720;
    private static final int FPS = 120;

    private static long lastFrameTime;
    private static float delta;

    public static void createDisplay() {
        ContextAttribs attribs = new ContextAttribs(3, 2).withForwardCompatible(true).withProfileCore(true);
        attribs.withForwardCompatible(true);

        try {
            Display.setDisplayMode(new DisplayMode(WIDTH, HEIGHT));
            Display.create(new PixelFormat(), attribs);
            Display.setTitle("Much Game very fun");
        } catch (LWJGLException ex) {
            Logger.getLogger(DisplayManager.class.getName()).log(Level.SEVERE, null, ex);
        }
        GL11.glViewport(0, 0, WIDTH, HEIGHT);
        lastFrameTime = getCurrrentTime();
    }

    public static void updateDisplay() {
        Display.sync(FPS);
        Display.update();
        long currentFrameTime = getCurrrentTime();
        delta = (currentFrameTime - lastFrameTime) / 1000f;
        lastFrameTime = currentFrameTime;

    }

    public static float getFrameTimeSeconds() {
        return delta;
    }

    public static void closeDisplay() {
        Display.destroy();
    }

    private static long getCurrrentTime() {
        return Sys.getTime() * 1000 / Sys.getTimerResolution();
    }
}