the fudginess that physics engines have, both in simulation and collision detection, tends to be really annoying for games like platformers. not to mention they really really would like to have small and stable dt s thank you very much often you only want collision detection and want to handle the ...

You are running three texture fetches for the same coordinate, that's not very ideal.

On the topic of creating phone/tablet games, you can always check out Moai. Lua interface and a whole lot more advanced than Love2D (which isn't always a good thing, I like Love2D better), and works on Android/iOS beside the main OS'.

I don't expect you to download the game from random sources. Getting maps from other people, however, is quite common and popular. In this case, JSON solves the security issues by simply not allowing (by definition) for any code, just data.
Of course, if your maps need code, sand boxing it is.

Using JSON will remove the security issues.

The error clearly tells you what the issue is. It was expecting a number and it got nil. From that you can conclude that either (or both) of v.x and v.y is nil. BUT, the error even goes further to tell you that argument 2 is the nil one. If you do a count from one to two, you'd see that v.x is the s...

That's what I mean by "dynamic animations". Integrating IK with physics allows you to basically do anything imaginable. The simplest cases are seen in fighting games, where the characters stop their punches/kicks when they hit the enemy, rather than going through them, which would happen i...

Yeah, for any kind of animation blending I'd go with skeletal animation. I guess 2D games don't really need IK, since their dynamic animations are usually effecting only one bone (e.g., make the head and hands follow the mouse). In case it is needed, CCD is quite simple to implement, I attached an e...

Implementing skeletal animation is very easy. You form a hierarchy of nodes (which are usually bones, but more things can be used, e.g. particle emitters, light sources, attachment points, etc.), and then you follow it recursively each time you want to update. For each node you get its local space m...

twobit wrote:A well-adapted custom blender exporter would be ideal! Has anybody of you experience with this?

It isn't hard to write an exporter, but I want to see you make a format that is "well-adapted". Every game has its own needs.