ms3drendering.java

Java 3D Game SDK.老外做的.

/*
 * MS3DRendering.java
 */

package org.java3dgamesdk.samples.III;

import javax.media.j3d.*;
import javax.vecmath.*;

import org.java3dgamesdk.core.*;
import org.java3dgamesdk.core.util.*;
import org.java3dgamesdk.graphics.*;
import org.java3dgamesdk.graphics.MS3D.*;


/**
 * This sample application demonstrates how to load and render a MS3D model.
 * This class has also the GameFrame as super class.
 *
 * @author  Norbert Nopper
 */
public class MS3DRendering extends GameFrame {
    
    private static int  JEEPS = 2;
    
    /**
     * Jeep.
     */
    private MS3DModel[]  jeep;
    
    /**
     * Index of the jeep to display.
     */
    private int          currentJeep;
    
    /**
     * Variable to remember the last time.
     */    
    private long        lastTime;

    /**
     * Rotation speed.
     */    
    private double      rotate;
    
    public static void main(String[] argv) {
        // create the object        
        MS3DRendering ms3dRendering = new MS3DRendering();
        
        // create the object and pass the game frame to it ...
        RenderSelection renderSelection = new RenderSelection(ms3dRendering);
        // ... rest is done by the dialog
        renderSelection.show();
        
    }

    /**
     * The game mouse is enabled here and also the cursor is changed as well.
     */
    protected void initGame() {
        // enable the game mouse
        gameMouse = true;
        // make an invisible cursor
        canvas3d.setCursor(GameMouse.CURSOR_TRANSPARENT);

        // load MS3D model
        MS3DLoader loader = new MS3DLoader();
        jeep = new MS3DModel[JEEPS];
        jeep[0] = loader.loadModel("JeepOne", "jeep1.ms3d");
        jeep[0].worldZ = -40;
        jeep[1] = loader.loadModel("JeepTwo", "jeep2.ms3d");
        jeep[1].worldZ = -40;
        currentJeep = 0;

        // add light to the scene
        gc3D.addLight(new AmbientLight());
    }
    
    /**
     * For this sample we do not need the method right now.
     *
     *@param currentTime the current game time in miliseconds, starting with 0
     */
    protected void updateGame(long currentTime) {
        if(gameKeys[27])
            exit();
        else if(mouseWheel != 0) {
            currentJeep += mouseWheel;
            if(currentJeep < 0)
                currentJeep = JEEPS-1;
            else if(currentJeep >= JEEPS)
                currentJeep = 0;
        }

        // calculate the rotation depending on the time
        rotate = (double)(currentTime-lastTime)/1000.0; 

        // rotate if the mouse was moved horizontal
        jeep[currentJeep].rotY += rotate*(double)deltaX;

        // rotate if the mouse was moved vertical
        jeep[currentJeep].rotX += rotate*(double)deltaY;
        
        // remember the last time
        lastTime = currentTime;
        
    }
    
    /**
     * Whenever a scene has to be rendered, the surface has to be cleaned first.
     */
    protected void renderGame() {
        gc3D.clear();
        
        // draw the MS3D model
        jeep[currentJeep].draw(gc3D);
    }
    
    /**
     * Set up the old cursor.
     */
    protected void exitGame() {
        // go back to the default cursor
        canvas3d.setCursor(GameMouse.CURSOR_DEFAULT);
    }
        
}