Now we can make some really cool game.
WHAT IS BOX2D?
You maybe did not heard of Box2D, but you must know AngryBird, which is made with Box2D.
Box2D is a 2D rigid body simulation library for games. Programmers can use it in their games to make objects move in realistic ways and make the game world more interactive. From the game engine's point of view, a physics engine is just a system for procedural animation.
You can refer here Box2D for details.
BASIC KNOWLEDGE
BoxWorld:
First we need a BoxWorld, with gravity like real world.
We can add Body in this BoxWorld.
BoxBody:
Now we can create Circle, Rectangle, Polygon, Edge body, and destry them if needed.
We have 3 type bodies: DYNAMIC, STATIC, KINEMATIC.
BoxJoint:
Now we can create MouseJoint, RevoluteJoint, DistanceJoint.
ALL BLOCKS
In BoxWorld we have:
in BoxBody, we have:
in BoxJoint, we have:
HOW TO USE?
it's so easy, just create a world, set the gravity if needed, add some bodies, then other things like falling down, bouncing, colliding will be done by Box2D.
Please do check the demo aia before use this extension or ask for help.
NOTICE
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Location in this extension (like x, or y) is in pixel (did not devided by screen density).
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Angle are in degree, not radian.
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The position of the body is refer to its center ( not like in Canvas, it refer to imagesprie's left top corner).
AIX DOWNLOAD:
cn.kevinkun.Box2D.aix (420.1 KB)
DEMO
box2D_V1.aia (521.0 KB)
OTHER
Box2d libary is a big one, there are many functions not implemented here. If you want to sponsor more functions, please PM me.
or you want to donate for this extension by PM me also.