Box2Dでドミノ
Box2Dでドミノ
/**
* Copyright hokori ( http://wonderfl.net/user/hokori )
* MIT License ( http://www.opensource.org/licenses/mit-license.php )
* Downloaded from: http://wonderfl.net/c/k5ZV
*/
//Box2Dでドミノ
package
{
import Box2D.Collision.b2Bound;
import Box2D.Dynamics.b2World;
import Box2D.Dynamics.b2Body;
import Box2D.Dynamics.b2BodyDef
import Box2D.Dynamics.Joints.b2Joint;
import Box2D.Dynamics.Joints.b2DistanceJoint;
import Box2D.Dynamics.Joints.b2DistanceJointDef;
import Box2D.Dynamics.Joints.b2JointEdge;
import Box2D.Dynamics.Joints.b2RevoluteJointDef;
import Box2D.Collision.b2AABB;
import Box2D.Collision.Shapes.b2Shape;
import Box2D.Collision.Shapes.b2CircleDef;
import Box2D.Collision.Shapes.b2PolygonDef;
import Box2D.Common.Math.b2Vec2;
import flash.events.Event;
import flash.display.Sprite;
public class Sample06 extends Sprite
{
private const STAGE_W:int = 465;
private const STAGE_H:int = 465;
private var m_disp_grp:Sprite;
public function Sample06()
{
//Box2D初期設定
this.B2Base();
//表示用まとめSprite
m_disp_grp= new Sprite();
this.addChild(m_disp_grp);
this.init();
this.addEventListener(Event.ENTER_FRAME, update, false, 0, true);
}
//いろいろ作成
private function init():void {
var kabe_color:uint = 0x55BBFF;
var tana_color:uint = 0x55BBFF;
var domino_color:uint = 0xFFDD55;
var ball_color:uint = 0x99FFBB;
//上下左右の壁
this.makeBox(0, STAGE_H / 2, 0, STAGE_W, 10, kabe_color);
this.makeBox(0, STAGE_H / 2, STAGE_H, STAGE_W, 10, kabe_color);
this.makeBox(0, 0, STAGE_W / 2, 10, STAGE_H, kabe_color);
this.makeBox(0, STAGE_W, STAGE_W / 2, 10, STAGE_H, kabe_color);
//棚
var tana_w:int = 420;
var tana_h:int = 10;
var tana_space_w:int = 45;
var tana_y_step:int = 465 / 5;
for (var t:int = 1; t < 5 ; t++) {
if((t % 2) == 0){
this.makeBox(0, STAGE_W / 2 + tana_space_w, t * tana_y_step, tana_w, tana_h, tana_color);
}else{
this.makeBox(0, STAGE_W / 2 - tana_space_w, t * tana_y_step, tana_w, tana_h, tana_color);
}
}
//ドミノ
var domino_w:int = 5;
var domino_h:int = 50;
var domino_y_start:int = tana_y_step - domino_h / 2;
var domino_x_start:int = 45;
var domino_x_step:int = 40;
var domino_x:int = 0;
var domino_y:int = 0;
var domino_num:int = 8;
for (var d:int = 0; d < 5 ; d++) {
domino_x = domino_x_start;
if((d % 2) != 0){
domino_x = STAGE_W - (domino_num * domino_x_step) + tana_space_w - domino_x_start;
}
domino_y = domino_y_start + tana_y_step * d;
for (var i:int = 0; i < domino_num; i++) {
this.makeBox(1, domino_x, domino_y, domino_w, domino_h, domino_color);
domino_x += domino_x_step;
}
}
//途中のボール
for (var b:int = 0; b < 4 ; b++) {
var ball_x:Number = tana_space_w + domino_x_start;
if((b % 2) == 0){
ball_x = STAGE_W - tana_space_w - domino_x_start;
}
var ball_y:Number = domino_y_start + tana_y_step * b;
this.makeBall(1, ball_x, ball_y - 5, 20, ball_color);
}
//最初のボール
this.makeBall(1, 40, 10, 20, 0x00FF33);
//最後のぐるぐる
var pole:b2Body = this.makeBox(1, STAGE_W - 75, tana_y_step * 5 - 45, 60, 5, 0xBBFF66);
var j_def:b2RevoluteJointDef = new b2RevoluteJointDef;
j_def.Initialize(m_b2_world.GetGroundBody(), pole, pole.GetPosition());
m_b2_world.CreateJoint(j_def);
//跳ね返りの強いボール
this.makeBall(1, STAGE_W - 75, tana_y_step * 5 - 45, 10, 0x0033FF, 3);
}
private function makeBox(density:Number, x:int, y:int, w:int, h:int, color:int):b2Body {
var disp:Sprite = new Sprite();
disp.graphics.beginFill(color);
disp.graphics.drawRect( - w / 2, - h / 2, w, h);
disp.graphics.endFill();
var body:b2Body = this.makeB2BodyBox(w, h, x, y, rotation, density , 0.5, 0.5, disp, m_disp_grp);
return body;
}
private function makeBall(density:Number, x:int, y:int, size:int, color:int, tobihane:Number = 1):b2Body {
var disp:Sprite = new Sprite();
disp.graphics.beginFill(color);
disp.graphics.drawCircle(0, 0, size / 2);
disp.graphics.endFill();
var body:b2Body = this.makeB2BodyCircle(size, x, y, density , 0.5, tobihane, disp, m_disp_grp);
return body;
}
private function update(e:Event):void{
var self:Sample06 = this;
this.m_b2_world.Step(this.m_b2_timeStep, this.m_b2_iterations);
for (var bb:b2Body = this.m_b2_world.m_bodyList; bb; bb = bb.m_next){
if (bb.m_userData is Sprite){
bb.m_userData.x = bb.GetPosition().x * m_b2_physcale;
bb.m_userData.y = bb.GetPosition().y * m_b2_physcale;
bb.m_userData.rotation = bb.GetAngle() * (180/Math.PI);
}
}
}
//-----------------------------------------------------------------------------------
//Box2D用まとめ
//-----------------------------------------------------------------------------------
protected var m_b2_world:b2World;
protected var m_b2_physcale:Number = 10;
protected var m_b2_iterations:int = 10;
protected var m_b2_timeStep:Number = 24.0;
public function B2Base(fps:int = 24, physcale:Number = 10, gravity:Number = 10):void{
this.m_b2_timeStep = 1.0 / fps;
this.m_b2_physcale = physcale;
this.createB2World(gravity);
}
private function createB2World(gravity:Number):void {
var worldAABB:b2AABB = new b2AABB();
worldAABB.lowerBound.Set(-1000, -1000);
worldAABB.upperBound.Set(1000, 1000);
var vec_gravity:b2Vec2 = new b2Vec2(0.0, 10.0);
var doSleep:Boolean = true;
this.m_b2_world = new b2World(worldAABB, vec_gravity, doSleep);
}
protected function makeB2BodyBox(w:int, h:int, x:Number, y:Number, angle:Number,
density:Number, friction:Number, restitution:Number,
viewdata:Sprite = null, viewgroup:Sprite = null) :b2Body {
var b2_boxdef:b2PolygonDef = this.createB2BoxDef(w, h, density, friction, restitution);
var b2_bodydef:b2BodyDef = this.createB2BodyDef(x, y, angle, viewdata, viewgroup);
var b2_body:b2Body = this.m_b2_world.CreateBody(b2_bodydef);
b2_body.CreateShape(b2_boxdef);
b2_body.SetMassFromShapes();
return b2_body;
}
protected function makeB2BodyCircle(radius:int, x:Number, y:Number,
density:Number, friction:Number, restitution:Number,
viewdata:Sprite = null, viewgroup:Sprite = null) :b2Body {
var b2_boxdef:b2CircleDef = this.createB2CircleDef(radius, density, friction, restitution);
var b2_bodydef:b2BodyDef = this.createB2BodyDef(x, y, 0, viewdata, viewgroup);
var b2_body:b2Body = this.m_b2_world.CreateBody(b2_bodydef);
b2_body.CreateShape(b2_boxdef);
b2_body.SetMassFromShapes();
return b2_body;
}
private function createB2BoxDef(width:int, height:int,
density:Number, friction:Number, restitution:Number):b2PolygonDef {
var boxdef:b2PolygonDef = new b2PolygonDef();
boxdef.SetAsBox(width / 2 / this.m_b2_physcale, height/ 2 / this.m_b2_physcale);
boxdef.density = density;
boxdef.friction = friction;
boxdef.restitution = restitution;
return boxdef;
}
private function createB2CircleDef(diameter:int, density:Number, friction:Number, restitution:Number):b2CircleDef {
var cdef:b2CircleDef = new b2CircleDef();
cdef.radius = diameter / 2 / this.m_b2_physcale;
cdef.density = density;
cdef.friction = friction;
cdef.restitution = restitution;
return cdef;
}
private function createB2BodyDef(x:Number, y:Number, angle:Number, viewdata:Sprite = null, viewgroup:Sprite = null):b2BodyDef {
var bodydef:b2BodyDef = new b2BodyDef();
bodydef.position.Set(x / this.m_b2_physcale, y / this.m_b2_physcale);
bodydef.angle = angle * Math.PI / 180;
bodydef.allowSleep = true;
if(viewdata != null){
bodydef.userData = viewdata;
bodydef.userData.width = viewdata.width;
bodydef.userData.height = viewdata.height;
if(viewgroup != null){
viewgroup.addChild(bodydef.userData);
}
}
return bodydef;
}
protected function createB2Vec(x:Number, y:Number):b2Vec2 {
var vec:b2Vec2 = new b2Vec2(x / this.m_b2_physcale, y / this.m_b2_physcale);
return vec;
}
}
}