I’m making billiard game with Away3D and JigLib engine. I use command addWorldForce to force cue ball moving:
cue.addWorldForce(new Vector3D(50, 0, 0), cue.currentState.position);
Ball is moving but it lasts eternity until cue ball stops moving. Velocity is falling-off very slowly. Here’s velocity trace log:
Vector3D(3.3099512757763256, -3.7111515419892314, 0)
Vector3D(3.3066413245005495, -2.6185628029613723, 0)
Vector3D(3.303334683176049, -0.00016308234093761697, 0)
Vector3D(3.300031348492873, -0.00010980444487101516, 0)
Vector3D(3.29673131714438, -0.00012081260197683408, 0)
Vector3D(3.2934345858272356, -0.00017622854164007462, 0)
Vector3D(3.2901411512414085, -0.00013069730750039365, 0)
Vector3D(3.286851010090167, -0.00008521160459511545, 0)
Vector3D(3.283564159080077, -0.00014299974510101164, 0)
Vector3D(3.2802805949209968, -0.0001116917021230428, 0)
Vector3D(3.277000314326076, -0.0001327916785196299, 0)
Vector3D(3.27372331401175, -0.00006987004825975429, 0)
Vector3D(3.270449590697738, -0.0001159169359442469, 0)
Vector3D(3.2671791411070403, -0.00011942362027232889, 0)
Vector3D(3.2639119619659334, -0.00015738574268908413, 0)
Vector3D(3.2606480500039674, -0.00012877876302182044, 0)
Vector3D(3.2573874019539635, -0.00010450325578365183, 0)
Vector3D(3.2541300145520093, -0.00008960528982356664, 0)
Vector3D(3.2508758845374572, -0.00009492714652436662, 0)
Vector3D(3.24762500865292, -0.00008410702125669545, 0)
Vector3D(3.244377383644267, -0.00008919168919785836, 0)
Vector3D(3.2411330062606227, -0.00008142861113664157, 0)
Vector3D(3.237891873254362, -0.00008141880499166954, 0)
Vector3D(3.2346539813811077, -0.00008140900865302924, 0)
Vector3D(3.2314193273997267, -0.00007446029897467321, 0)
Vector3D(3.228187908072327, -0.00007687939714064563, 0)
Vector3D(3.2249597201642546, -0.00006833235940950377, 0)
I tried to change friction, but it didn’t changed anything. What should i do to make ball moving more realistic?
package
{
import away3d.cameras.Camera3D;
import away3d.containers.Scene3D;
import away3d.containers.View3D;
import away3d.lights.DirectionalLight;
import away3d.materials.ColorMaterial;
import away3d.materials.lightpickers.StaticLightPicker;
import away3d.materials.methods.FogMethod;
import flash.display.Sprite;
import flash.events.Event;
import flash.geom.Vector3D;
import jiglib.physics.RigidBody;
import jiglib.plugin.away3d4.Away3D4Mesh;
import jiglib.plugin.away3d4.Away3D4Physics;
/**
* ...
* @author Gugis
*/
public class Test extends Sprite
{
var scene:Scene3D;
var view:View3D;
var camera:Camera3D;
var physics:Away3D4Physics;
private var sunLight:DirectionalLight;
private var lightPicker:StaticLightPicker;
private var fogMethod:FogMethod;
var ground:RigidBody;
var table:Away3D4Mesh;
var cue:RigidBody;
public function Test()
{
View();
Physics();
Lights();
Table();
Ball();
Listeners();
}
private function Ball():void
{
cue = physics.createSphere(new ColorMaterial(0xFFFFFF), 5);
cue.y = 100;
cue.addWorldForce(new Vector3D(2, 0, 0), cue.currentState.position);
}
private function Table():void
{
var groundMaterial:ColorMaterial = new ColorMaterial(0x00ff00);
groundMaterial.lightPicker = lightPicker;
groundMaterial.ambientColor = 0x303040;
groundMaterial.ambient = 1;
groundMaterial.specular = .2;
groundMaterial.addMethod(fogMethod);
ground = physics.createGround(groundMaterial, 450, 250, 1, 1,true,0);
ground.friction = 10;
ground.movable = false;
ground.friction = 20;
ground.restitution = 0.1;
}
private function Listeners():void
{
addEventListener(Event.ENTER_FRAME, Update);
}
private function Update(e:Event):void
{
trace(cue.currentState.linVelocity);
physics.step();
view.render();
}
private function View():void
{
camera = new Camera3D();
camera.x = 0;
camera.y = 250;
camera.z = -400;
camera.rotationX = 30;
view = new View3D(null,camera);
view.backgroundColor = 0x0c00ff;
this.addChild(view);
}
private function Lights():void
{
sunLight = new DirectionalLight(-300, -300, -500);
sunLight.color = 0xfffdc5;
sunLight.ambient = 1;
view.scene.addChild(sunLight);
lightPicker = new StaticLightPicker([sunLight]);
fogMethod = new FogMethod(0, 8000, 0xcfd9de);
}
private function Physics():void
{
physics = new Away3D4Physics(view, 8);
}
}
}
