/*
 * CollisionSphere.java
 */

package org.java3dgamesdk.samples.IV;

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

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

/**
 *
 * @author  Norbert Nopper
 */
public class CollisionSphere extends GameFrame {
    
    private MS3DModel                  jeep;
       
    private DisplayBoundingSphere      sphere;
    
    /**
     * Variable to remember the last time.
     */    
    private long        lastTime;

    /**
     * Time delat.
     */    
    private double      rotate;
    
    public static void main(String[] argv) {
        // create the object        
        CollisionSphere application = new CollisionSphere();
        
        // create the object and pass the game frame to it ...
        RenderSelection renderSelection = new RenderSelection(application);
        // ... 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);

        MS3DLoader loader = new MS3DLoader();
        
        jeep = loader.loadModel("JeepOne", "jeep1.ms3d");
        jeep.worldZ = -50.0;
        sphere = new DisplayBoundingSphere(loader.getBoundingSphere());
        sphere.worldZ = -50.0;
                
        // 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();

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

        jeep.rotY += rotate*(double)deltaX;
        sphere.rotY += rotate*(double)deltaX;

        // rotate if the mouse was moved vertical
        jeep.rotX += rotate*(double)deltaY;
        sphere.rotX += rotate*(double)deltaY;
                
        jeep.update(currentTime);        

        sphere.update(currentTime);
                
        // remember the last time
        lastTime = currentTime;

    }
    
    protected void renderGame() {
        gc3D.clear();

        jeep.draw(gc3D);        

        sphere.draw(gc3D);
    }
    
    /**
     * Set up the old cursor.
     */
    protected void exitGame() {
        // go back to the default cursor
        canvas3d.setCursor(GameMouse.CURSOR_DEFAULT);
    }
        
}