Hi, I would like to know if it is possible to distinguish between pen and touch input. By pen, I mean either Surface pen, or Wacom tablet pen, with pressure levels. What I'd like to do is play around with making simple drawing apps for prototyping some ideas. I'd like to be able to use the pen with ...

Here's another way. function clamp(val, min, max) if val < min then val = min elseif max < val then val = max end return val end Note a subtlety... if min is 0 and your value is -0, it will remain -0. If you really want it to become 0 (e.g. could matter for printouts) then change the comparisons lik...

I've been playing around with Lua internal DSLs as well. Take something like this: local END = LNVL.Scene() function END.script() Jeff “I hate you. I hate you so much.” ... end local NOT_GUILTY = NOT_GUILTY.Scene() function NOT_GUILTY.script() Eric “Not Guilty, your honor!” ... end Now assume your s...

Lua technically is a DSL, as it was born as one (when PETROBRAS hired TeCGraf at PUC-Rio to write a DSL for them). There are The trick is as I said, metatables: Room = setmetatable({}, { __call = function(original, created) -- manipulate the new room here return created end }) In this case, you can...

OK I managed to port LOVE to GLES2 (code-wise, at least, enough to play Mari0). I've built it on Raspberry Pi. But it's still linking (well, failing to link) to glX. I'm at the point where I'm trying to get it properly linked so I can ascertain whether it can run, or whether I need to edit SDL or so...

I think it's already been taken care of, but yeah, heightmaps (plasma) using the diamond square algorithm look nice, I have Lua code to do it on my github: https://github.com/mlepage/heightmap

Nice!

Is that using recursive subdivision? I have some Lua code that does that, using diamond-square algorithm, see here: https://github.com/mlepage/heightmap

I am currently using Sublime Text 2 after a few years of Notepad++. Both are nice and perfectly serviceable.

Generally, you would use thresholds in your comparisons, to tell if it is "close enough". It's not that the floating-point operations are inaccurate, since they are perfectly accurate and deterministic (repeatable). It's that they aren't real math, they are a model (approximation). They re...

I recently obtained a Raspberry Pi. I have been running the "squeeze" and "wheezy" Debian images. My understanding is that floating point support is still software-emulated, and so that will be slow until hardware support is enabled. Also, X Windows isn't as hardware accelerated ...