You are all invited to play SamePhysics, my first Box2D game. It’s a small milestone because it’s my first Box2D game. The game is the remake of SameGame, just using Box2D to manage the blocks. It’s not the greatest game of the year, but developing a full Box2D game made me acquire the experience to [...]

Box2D is getting more and more popular among developers, and I am proud to have the permission to publish the first source code for a complete Box2D game. The author is Esteban Gallardo, author of Free Creation Games. The game is called Phyballs And this is the source code. I have to say, this is [...]

Only a day after Drawing boxes on the fly in Box2D I got three submissions for drawing circles on the fly. I will list all of them, and I found interesting how different Flashers obtained the same result in quite the same way. The first to send the routine was Vitaliy Berov: This is the [...]

Box2D is getting more and more popular among Flash developers, but it still lacks of adeguate tutorials and documentation about making games with it. Andrew McGrath from Gamersgarden released a great tutorial about drawing boxes on the fly on Box2D. Every detail of the script is fully commented, so you won’t miss anything, and you [...]

One of the most interesting Box2D features are joints. Joints are used to constraint two bodies together in various ways and allow you to create very complex objects such as ragdolls and motors. At the moment, Box2D features six different joint types: Distance, Gear, Mouse, Prismatic, Pulley and Revolute joint. In this post, we’ll learn [...]

Box2D is a great library because you don’t have to care for collisions, the library manages all by itself. But sometimes, specially in games, you may need to know when the player hits the coin, or the enemy, or whatever. Box2D has a class called b2ContactListener that you have to rewrite to make it work [...]

Last week I explained The magic of compound objects with Box2D, now it’s time to understanding custom polygons. First, let me tell you the difference between a compound object and a custom polygon. A compound object is an object made by two or more primitive objects (like the maze I created in this tutorial). A [...]

You can call it complex shapes, compound shapes, complex objects, compound objects or even poisoned underpants, but you all want to create complex “things” with Box2D. Despite the “complex” word, it’s very easy to create one. You just have to add multiple shapes to a body. If you followed my latest Box2D tutorials, you will [...]

When you are about to create a complex script with Box2D – or even a simple one, but that’s complex for your skills – I suggest to enable debug draw. Debug draw will provide you everything you need in order to verify your script is working correctly, and once you are satisfied with the result, [...]

This is ideally the next part after Understanding pixels and meters with Box2D and how to select an object with mouse – part 2, but it’s so important understanding how to drag objects with Box2D that I decided to change the title. Anyway, in this uncommented example (a commented one will follow) you can select [...]