LÖVE

bartbes wrote:I certainly haven't, though I recently saw something about someone who calculated only one wall and used a trick to get all other walls from it.

The guy in that The Colony video?

Well, I recall him mentioning that the rooms in the warehouse were drawn by extending the wall up indefinitely. Don't know about calculating all walls.

Yes, he, he was talking about some nice tricks.

I have tweaked the ray_cast function a bit, and cleaned up the draw routine (I draw the sky and the floor as big rectangles, then the walls as an overlay).

I get 60 fps almost all the time with a sliver width of 3. It's a bit slower (56-58 when the field is wide and deep). I have a Core Duo 2GHz (a 3.5 year old beast).
The current algorithm is still linear, but a better breed of linear.

It used to be fn( distance * 1/ray_resolution ) ) with ray_resolution = 0.02

it's now fn( ( distance * ( 1/seek_step ) + log2( (1/ray_resolution) * ( 1/distance) )) with

• seek_step = 0.1
• ray_resolution = 1/64
• a security to prevent distance from being < 1 in the calculation.

for pixels far enough, it's thus almost fn( ( distance * ( 1/seek_step ) ) : 5 times faster :-)

While typing this message, I thought of a way to make it faster and more accurate still. I'll post an update when I have the time.

We could implement fog by drawing a gradient on the floor and tweaking the wall colors as a function of distance.


Edit: new version with screen.vsync = false and love.load(dt) modified to move at the speed it had previously when hitting vsync.
Edit2: Love ignores the config file... weird.
Edit3: you can set VSync in main.lua if you want (love.graphics.setMode( config.width, config.height, false, true --[[set this to false]], 0 ))
Edit4: Now with screenshot. Notice the higher resolution and the FPS :-)

I think you forgot using deltatime when moving the camera, because I move very fast...

I didn't change anything to the load.update() logic. It still uses dt.

Edit: errr... well, actually, it takes a dt parameter, but it doesn't use it. I'll see what I can do :-)
Edit2: now it uses dt... and, yes, it's speedy :-)

Woah.. good job, I'm hitting vsync!

I tried to disable vsync, but love ignores the config file (both love.conf and conf.lua).

pygy wrote:I tried to disable vsync, but love ignores the config file (both love.conf and conf.lua).

You mean game.conf?

And LÖVE does not ignore conf.lua -- do you know the right syntax?

[snip] Edit... I read the wiki too fast...

But the problem was somewhere else:

love.graphics.setMode( 500, 400, false, true, 0 )