/*
* Copyright (c) 2013, Oskar Veerhoek
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* The views and conclusions contained in the software and documentation are those
* of the authors and should not be interpreted as representing official policies,
* either expressed or implied, of the FreeBSD Project.
*/
package episode_6;
import org.lwjgl.LWJGLException;
import org.lwjgl.input.Keyboard;
import org.lwjgl.opengl.Display;
import org.lwjgl.opengl.DisplayMode;
import static org.lwjgl.opengl.GL11.*;
/**
* Shows the use of different game states.
*
* @author Oskar
*/
public class StateDemo {
private static enum State {
INTRO, MAIN_MENU, GAME
}
private static State state = State.INTRO;
public static void main(String args[]) {
try {
Display.setDisplayMode(new DisplayMode(640, 480));
Display.setTitle("State Demo");
Display.create();
} catch (LWJGLException e) {
e.printStackTrace();
Display.destroy();
System.exit(1);
}
glMatrixMode(GL_PROJECTION);
glOrtho(0, 640, 480, 0, 1, -1);
glMatrixMode(GL_MODELVIEW);
while (!Display.isCloseRequested()) {
checkInput();
render();
Display.update();
Display.sync(60);
}
Display.destroy();
}
private static void render() {
glClear(GL_COLOR_BUFFER_BIT);
switch (state) {
case INTRO:
glColor3f(1.0f, 0f, 0f);
glRectf(0, 0, 640, 480);
break;
case GAME:
glColor3f(0f, 1.0f, 0f);
glRectf(0, 0, 640, 480);
break;
case MAIN_MENU:
glColor3f(0f, 0f, 1.0f);
glRectf(0, 0, 640, 480);
break;
}
}
private static void checkInput() {
switch (state) {
case INTRO:
if (Keyboard.isKeyDown(Keyboard.KEY_S)) {
state = State.MAIN_MENU;
}
if (Keyboard.isKeyDown(Keyboard.KEY_ESCAPE)) {
Display.destroy();
System.exit(0);
}
break;
case GAME:
if (Keyboard.isKeyDown(Keyboard.KEY_BACK)) {
state = State.MAIN_MENU;
}
break;
case MAIN_MENU:
if (Keyboard.isKeyDown(Keyboard.KEY_RETURN)) {
state = State.GAME;
}
if (Keyboard.isKeyDown(Keyboard.KEY_SPACE)) {
state = State.INTRO;
}
break;
}
}
}