BOX2D FLASH TUTORIAL PDF

Nemi Thanks for the reply. By using our site, you acknowledge that you have read and understand our Cookie PolicyPrivacy Policyand our Terms of Service. Add new b2Vec2 0- This one looks quiet nice: I will do what I can to help. Sign up or log in Sign up using Google.

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The b2World constructor needs two parameters : gravity : the force that will act on all the box2d objects, forces are represented by vectors, in our example we created a normal gravity vector with a y direction equals to 9.

When creating physical objects in box2D we have to go through 5 steps : Create body definition Create body from world using body definition Create shape Create fixture definition Pass the fixture definition to the CreateFixture method in the body object But when applying forces, impulses or changing anything on this box2d object we will need only its b2body object.

As we have said before we will create each step in a separate method, so make a method that takes 4 arguments x, y, width, height and call it createPlayer which returns the b2body to be used later.

Then we created a body from the world using bodyDef. The fourth step which is creating the fixtureDef, it takes the shape and sets some physical properties, lets talk about each property we have set: Restitution : this video shows you the effect of increasing the restitution of bodies, for more information about the coefficient of restitution watch this video.

Friction : by increasing this you increase the resistance between this object and any other object colliding with and therefore decreasing the time needed for this object to come to rest.

Finally, The last step is passing this fixtureDef we created to the createFixture method in the body object. That is it? Okay we now created our box2d object and the display sprite, how to make a reference to the sprite in the box2d object? Fairly easy, just add this line after creating bodyDef object bodyDef.

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