Physics
Code
package
{
import flash.display.Sprite;
import flash.events.Event;
import flash.events.KeyboardEvent;
import flash.text.TextField;
import flash.text.TextFieldAutoSize;
import flash.text.TextFormat;
import flash.ui.Keyboard;
import jiglib.geometry.JBox;
import jiglib.geometry.JPlane;
import jiglib.geometry.JSphere;
import jiglib.math.JMatrix3D;
import jiglib.math.JNumber3D;
import jiglib.physics.PhysicsSystem;
import jiglib.physics.RigidBody;
import jiglib.plugin.papervision3d.Pv3dMesh;
import org.papervision3d.cameras.Camera3D;
import org.papervision3d.materials.ColorMaterial;
import org.papervision3d.materials.WireframeMaterial;
import org.papervision3d.materials.special.CompositeMaterial;
import org.papervision3d.materials.utils.MaterialsList;
import org.papervision3d.objects.DisplayObject3D;
import org.papervision3d.objects.primitives.Cube;
import org.papervision3d.objects.primitives.Plane;
import org.papervision3d.objects.primitives.Sphere;
import org.papervision3d.render.QuadrantRenderEngine;
import org.papervision3d.scenes.Scene3D;
import org.papervision3d.view.Viewport3D;
public class JigLibFlashPhysics extends Sprite
{
private var scene :Scene3D;
private var camera :Camera3D;
private var viewport :Viewport3D;
private var renderer :QuadrantRenderEngine;
private var material :ColorMaterial;
private var materialActive :CompositeMaterial;
private var materialInactive :CompositeMaterial;
private var materialMoveable :CompositeMaterial;
private var materials :MaterialsList;
private var jCube :Array = new Array();
private var jSphere :Array = new Array();
private var keyForward :Boolean = false;
private var keyBackward :Boolean = false;
private var keyLeft :Boolean = false;
private var keyRight :Boolean = false;
private var keyUp :Boolean = false;
private var field :TextField;
public function JigLibFlashPhysics()
{
scene = new Scene3D();
camera = new Camera3D();
camera.x = 0;
camera.y = 500;
camera.z = -400;
camera.target = new DisplayObject3D();
camera.target.x = 0;
camera.target.y = 250;
camera.target.z = 0;
viewport = new Viewport3D();
viewport.autoScaleToStage = true;
addChild(viewport);
renderer = new QuadrantRenderEngine(1);
material = new ColorMaterial(0x000000);
materialActive = new CompositeMaterial();
materialActive.addMaterial(new ColorMaterial(0x00ff00, 0.5));
materialActive.addMaterial(new WireframeMaterial(0x00ff00));
materialInactive = new CompositeMaterial();
materialInactive.addMaterial(new ColorMaterial(0xff0000, 0.5));
materialInactive.addMaterial(new WireframeMaterial(0xff0000));
materialMoveable = new CompositeMaterial();
materialMoveable.addMaterial(new ColorMaterial(0xffff00, 0.5));
materialMoveable.addMaterial(new WireframeMaterial(0xffff00));
materials = new MaterialsList();
materials.addMaterial(material, "all");
var ground :Cube = new Cube(materials, 500, 500, 500);
scene.addChild(ground);
var jGround :JBox = new JBox(new Pv3dMesh(ground), 500, 500, 500);
jGround.movable = false;
jGround.moveTo(JNumber3D.ZERO);
jGround.setOrientation(JMatrix3D.rotationX(Math.PI / 2.5));
PhysicsSystem.getInstance().addBody(jGround);
var cube :Cube;
for (var i:int = 0; i < 6; i++) {
cube = new Cube(materials, 40, 40, 40);
scene.addChild(cube);
jCube[i] = new JBox(new Pv3dMesh(cube), 40, 40, 40);
jCube[i].mass = 3;
jCube[i].moveTo(new JNumber3D((Math.random() * 100), 240 + (60 * Number(i) + 60), (Math.random() * -100)));
PhysicsSystem.getInstance().addBody(jCube[i]);
}
var sphere :Sphere;
for (i = 0; i < 12; i++) {
if (i == 0) {
sphere = new Sphere(materialMoveable, 20, 6);
} else {
sphere = new Sphere(materialActive, 20, 6);
}
scene.addChild(sphere);
jSphere[i] = new JSphere(new Pv3dMesh(sphere), 20);
jSphere[i].mass = 3;
jSphere[i].moveTo(new JNumber3D(((Math.random() * 500) - 250), 240 + (60 * Number(i) + 60), ((Math.random() * 500) - 250)));
PhysicsSystem.getInstance().addBody(jSphere[i]);
}
field = new TextField();
field.autoSize = TextFieldAutoSize.LEFT;
field.defaultTextFormat = new TextFormat("verdana");
field.selectable = false;
addChild(field);
instructions();
stage.addEventListener(KeyboardEvent.KEY_DOWN, handleKeyDown);
stage.addEventListener(KeyboardEvent.KEY_UP, handleKeyUp);
addEventListener(Event.ENTER_FRAME, handleEnterFrame);
}
private function handleEnterFrame(e:Event):void
{
if (keyForward) {
jSphere[0].addWorldForce(new JNumber3D(0, 0, 100), jSphere[0].currentState.position);
}
if (keyBackward) {
jSphere[0].addWorldForce(new JNumber3D(0, 0, -100), jSphere[0].currentState.position);
}
if (keyLeft) {
jSphere[0].addWorldForce(new JNumber3D(-100, 0, 0), jSphere[0].currentState.position);
}
if (keyRight) {
jSphere[0].addWorldForce(new JNumber3D(100, 0, 0), jSphere[0].currentState.position);
}
if (keyUp) {
jSphere[0].addWorldForce(new JNumber3D(0, 100, 0), jSphere[0].currentState.position);
}
for (var i:String in jCube) {
if (jCube[i].isActive()) {
jCube[i].skin.mesh.material = materialActive;
} else {
jCube[i].skin.mesh.material = materialInactive;
}
if (jCube[i].currentState.position.y < 0) {
jCube[i].moveTo(new JNumber3D(((Math.random() * 500) - 250), 250, ((Math.random() * 500) - 250)));
}
}
for (i in jSphere) {
if (Number(i) != 0) {
if (jSphere[i].isActive()) {
jSphere[i].skin.mesh.material = materialActive;
} else {
jSphere[i].skin.mesh.material = materialInactive;
}
}
if (jSphere[i].currentState.position.y < 0) {
jSphere[i].moveTo(new JNumber3D(((Math.random() * 800) - 400), 240 + (60 * Number(i) + 60), ((Math.random() * 800) - 400)));
}
}
PhysicsSystem.getInstance().integrate(0.1);
renderer.renderScene(scene, camera, viewport);
}
private function handleKeyDown(e:KeyboardEvent):void
{
switch(e.keyCode) {
case Keyboard.ENTER:
field.visible = field.visible ? false : true;
break;
case Keyboard.UP:
case "W".charCodeAt():
keyForward = true;
keyBackward = false;
break;
case Keyboard.DOWN:
case "S".charCodeAt():
keyBackward = true;
keyForward = false;
break;
case Keyboard.LEFT:
case "A".charCodeAt():
keyLeft = true;
keyRight = false;
break;
case Keyboard.RIGHT:
case "D".charCodeAt():
keyRight = true;
keyLeft = false;
break;
}
}
private function handleKeyUp(e:KeyboardEvent):void
{
switch(e.keyCode) {
case Keyboard.UP:
case "W".charCodeAt():
keyForward = false;
break;
case Keyboard.DOWN:
case "S".charCodeAt():
keyBackward = false;
break;
case Keyboard.LEFT:
case "A".charCodeAt():
keyLeft = false;
break;
case Keyboard.RIGHT:
case "D".charCodeAt():
keyRight = false;
break;
}
}
private function instructions():void
{
field.text = "Click\tStart"
+ "\nEnter\tInstructions"
+ "\nW\t\tForward"
+ "\nS\t\tBackward"
+ "\nA\t\tLeft"
+ "\nD\t\tRight";
}
}
}
© 2021 Osbo Design