luz / spaceshooter

A 2D space shooter.

spaceshooter's Issues

float or double?

first i have to say i found this:

"On x86 processors, at least, float and double will each be converted to a 10-byte real by the FPU for processing. The FPU doesn't have separate processing units for the different floating-point types it supports.
The age-old advice that float is faster than double applied 100 years ago when most CPUs didn't have built-in FPUs (and few people had separate FPU chips), so most floating-point manipulation was done in software. On these machines (which were powered by steam generated by the lava pits), it was faster to use floats. Now the only real benefit to floats is that they take up less space (which only matters if you have millions of them)."

second i read this:

"There are still some cases where floats are prefered however - with OpenGL coding for example it's far more common to use the GLFloat datatype (generally mapped directly to 16 bit float) as it is more efficient on most GPU's than GLDouble"

--> while we don't use openGL, i think its easier (and far more common) to use double

object wrap

wenn der speed hoch ist (mehr als 1 pixel pro frame)
dann wird das objekt stocken mit der aktuellen wrap-rechnung
deshalb im code etwa so:
if (x > MAXSCREENWIDTH)
x -= MAXSCREENWIDTH;