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2012-03-01T00:28:31Z

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	* Copyright (c) 2006-2007 Erin Catto http://www.gphysics.com		* Copyright (c) 2006-2007 Erin Catto http://www.gphysics.com
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2012-03-01T00:26:30Z

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/*
* Copyright (c) 2006-2007 Erin Catto http://www.gphysics.com
*
* This software is provided 'as-is', without any express or implied
* warranty. In no event will the authors be held liable for any damages
* arising from the use of this software.
* Permission is granted to anyone to use this software for any purpose,
* including commercial applications, and to alter it and redistribute it
* freely, subject to the following restrictions:
* 1. The origin of this software must not be misrepresented; you must not
* claim that you wrote the original software. If you use this software
* in a product, an acknowledgment in the product documentation would be
* appreciated but is not required.
* 2. Altered source versions must be plainly marked as such, and must not be
* misrepresented as being the original software.
* 3. This notice may not be removed or altered from any source distribution.
*/

package TestBed{

import Box2D.Dynamics.*;
import Box2D.Collision.*;
import Box2D.Collision.Shapes.*;
import Box2D.Dynamics.Joints.*;
import Box2D.Dynamics.Contacts.*;
import Box2D.Dynamics.Controllers.*;
import Box2D.Common.*;
import Box2D.Common.Math.*;

public class TestBuoyancy extends Test{

private var m_bodies:Array = new Array();
private var m_controller:b2Controller;

public function TestBuoyancy(){
var bc:b2BuoyancyController = new b2BuoyancyController();
m_controller = bc;

bc.normal.Set(0,-1);
bc.offset = -200 / m_physScale;
bc.density = 2.0;
bc.linearDrag = 5;
bc.angularDrag = 2;

var ground:b2Body = m_world.GetGroundBody();
var i:int;
var anchor:b2Vec2 = new b2Vec2();
var body:b2Body;
var fd:b2FixtureDef;

// Spawn in a bunch of crap
for (i = 0; i < 5; i++){
var bodyDef:b2BodyDef = new b2BodyDef();
bodyDef.type = b2Body.b2_dynamicBody;
//bodyDef.isBullet = true;
var boxDef:b2PolygonShape = new b2PolygonShape();
fd = new b2FixtureDef();
fd.shape = boxDef;
fd.density = 1.8;
// Override the default friction.
fd.friction = 0.3;
fd.restitution = 0.1;
boxDef.SetAsBox((Math.random() * 5 + 10) / m_physScale, (Math.random() * 5 + 10) / m_physScale);
bodyDef.position.Set((Math.random() * 400 + 120) / m_physScale, (Math.random() * 150 + 50) / m_physScale);
bodyDef.angle = Math.random() * Math.PI;
body = m_world.CreateBody(bodyDef);
body.CreateFixture(fd);
m_bodies.push(body);

}
for (i = 0; i < 5; i++){
var bodyDefC:b2BodyDef = new b2BodyDef();
bodyDefC.type = b2Body.b2_dynamicBody;
//bodyDefC.isBullet = true;
var circDef:b2CircleShape= new b2CircleShape((Math.random() * 5 + 10) / m_physScale);
fd = new b2FixtureDef();
fd.shape = circDef;
fd.density = 0.06;
// Override the default friction.
fd.friction = 0.3;
fd.restitution = 0.1;
bodyDefC.position.Set((Math.random() * 400 + 120) / m_physScale, (Math.random() * 150 + 50) / m_physScale);
bodyDefC.angle = Math.random() * Math.PI;
body = m_world.CreateBody(bodyDefC);
body.CreateFixture(fd);
m_bodies.push(body);
}
for (i = 0; i < 15; i++){
var bodyDefP:b2BodyDef = new b2BodyDef();
bodyDefP.type = b2Body.b2_dynamicBody;
//bodyDefP.isBullet = true;
var polyDef:b2PolygonShape = new b2PolygonShape();
if (Math.random() > 0.66) {
polyDef.SetAsArray([
new b2Vec2((-10 -Math.random()*10) / m_physScale, ( 10 +Math.random()*10) / m_physScale),
new b2Vec2(( -5 -Math.random()*10) / m_physScale, (-10 -Math.random()*10) / m_physScale),
new b2Vec2(( 5 +Math.random()*10) / m_physScale, (-10 -Math.random()*10) / m_physScale),
new b2Vec2(( 10 +Math.random() * 10) / m_physScale, ( 10 +Math.random() * 10) / m_physScale)
]);
}
else if (Math.random() > 0.5)
{
var array:Array = [];
array[0] = new b2Vec2(0, (10 +Math.random()*10) / m_physScale);
array[2] = new b2Vec2((-5 -Math.random()*10) / m_physScale, (-10 -Math.random()*10) / m_physScale);
array[3] = new b2Vec2(( 5 +Math.random()*10) / m_physScale, (-10 -Math.random()*10) / m_physScale);
array[1] = new b2Vec2((array[0].x + array[2].x), (array[0].y + array[2].y));
array[1].Multiply(Math.random()/2+0.8);
array[4] = new b2Vec2((array[3].x + array[0].x), (array[3].y + array[0].y));
array[4].Multiply(Math.random() / 2 + 0.8);
polyDef.SetAsArray(array);
}
else
{
polyDef.SetAsArray([
new b2Vec2(0, (10 +Math.random()*10) / m_physScale),
new b2Vec2((-5 -Math.random()*10) / m_physScale, (-10 -Math.random()*10) / m_physScale),
new b2Vec2(( 5 +Math.random() * 10) / m_physScale, ( -10 -Math.random() * 10) / m_physScale)
]);
}
fd = new b2FixtureDef();
fd.shape = polyDef;
fd.density = 2.1;
fd.friction = 0.3;
fd.restitution = 0.1;
bodyDefP.position.Set((Math.random() * 400 + 120) / m_physScale, (Math.random() * 150 + 50) / m_physScale);
bodyDefP.angle = Math.random() * Math.PI;
body = m_world.CreateBody(bodyDefP);
body.CreateFixture(fd);
m_bodies.push(body);
}

//Add some exciting bath toys
boxDef.SetAsBox(40 / m_physScale, 10 / m_physScale);
fd = new b2FixtureDef();
fd.shape = boxDef;
fd.density = 3.0;
bodyDef.position.Set(50 / m_physScale, 300 / m_physScale);
bodyDef.angle = 0;
body = m_world.CreateBody(bodyDef);
body.CreateFixture(fd);
m_bodies.push(body);

bodyDef.position.Set(300/ m_physScale, 300 / m_physScale);
body = m_world.CreateBody(bodyDef);
circDef = new b2CircleShape(7 / m_physScale);
fd = new b2FixtureDef();
fd.shape = circDef;
fd.density =2.0;
circDef.b2internal::m_p.Set(30 / m_physScale, 0 / m_physScale);
body.CreateFixture(fd);
circDef.b2internal::m_p.Set(-30 / m_physScale, 0 / m_physScale);
body.CreateFixture(fd);
circDef.b2internal::m_p.Set(0 / m_physScale, 30 / m_physScale);
body.CreateFixture(fd);
circDef.b2internal::m_p.Set(0 / m_physScale, -30 / m_physScale);
body.CreateFixture(fd);

fd = new b2FixtureDef();
fd.shape = boxDef;
fd.density = 2.0;
boxDef.SetAsBox(30 / m_physScale, 2 / m_physScale);
body.CreateFixture(fd);
fd.density = 2.0;
boxDef.SetAsBox(2 / m_physScale, 30 / m_physScale);
body.CreateFixture(fd);
m_bodies.push(body);

for each(body in m_bodies)
m_controller.AddBody(body);
m_world.AddController(m_controller);

// Set Text field
Main.m_aboutText.text = "Buoyancy";

}

//======================
// Member Data
//======================

public override function Update():void{

super.Update();
//Draw water line
m_sprite.graphics.lineStyle(1,0x0000ff,1);
m_sprite.graphics.moveTo(5,200);
m_sprite.graphics.lineTo(635,200);
//It's not water without transparency...
m_sprite.graphics.lineStyle();
m_sprite.graphics.beginFill(0x0000ff,0.2);
m_sprite.graphics.moveTo(5,200);
m_sprite.graphics.lineTo(635,200);
m_sprite.graphics.lineTo(635,355);
m_sprite.graphics.lineTo(5,355);
m_sprite.graphics.endFill();

}
}

}

Box2d flash bouyancy - Versionshistorik

Hakan den 1 mars 2012 kl. 00.28

Hakan: Skapade sidan med '/* * Copyright (c) 2006-2007 Erin Catto http://www.gphysics.com * * This software is provided 'as-is', without any express or implied * warranty. In no event will the authors...'