Adding Bodies to the World - Box2D for Flash Games

Game Development Reference

In-Depth Information

6.

Then we can build the oriented box, update fixture shape, and add it to the

theIdol body:

polygonShape.SetAsOrientedBox(bW.bH,boxPos,boxAngle);

fixtureDef.shape=polygonShape;

theIdol.CreateFixture(fixtureDef);

7. And finally, the idol function will look like the following code snippet:

private function idol(pX:Number,pY:Number):void{

var bodyDef:b2BodyDef=new b2BodyDef();

bodyDef.position.Set(pX/worldScale,pY/worldScale);

var polygonShape:b2PolygonShape=new b2PolygonShape();

polygonShape.SetAsBox(5/worldScale,20/worldScale);

var fixtureDef:b2FixtureDef=new b2FixtureDef();

fixtureDef.shape=polygonShape;

fixtureDef.density=1;

fixtureDef.restitution=0.4;

fixtureDef.friction=0.5;

var theIdol:b2Body=world.CreateBody(bodyDef);

theIdol.CreateFixture(fixtureDef);

var bW:Number=5/worldScale;

var bH:Number=20/worldScale;

var boxPos:b2Vec2=new b2Vec2(0,10/worldScale);

var boxAngle:Number=-Math.PI/4;

polygonShape.SetAsOrientedBox(bW,bH,boxPos,boxAngle);

fixtureDef.shape=polygonShape;

theIdol.CreateFixture(fixtureDef);

boxAngle=Math.PI/4;

polygonShape.SetAsOrientedBox(bW,bH,boxPos,boxAngle);

fixtureDef.shape=polygonShape;

theIdol.CreateFixture(fixtureDef);

}

8.

Test the movie to see how the idol now looks similar to our sketch:

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