Author Topic: Never got around to asking :P (Read 2747 times)

hellninjas · « **on:** May 31, 2012, 11:15:00 am »

How would I use the pxl-test( command to prevent my character from falling through pixels, with acceleration of course, x256.
Or is there another, possibly easy, way to do this?

Happybobjr · « **Reply #1 on:** May 31, 2012, 11:37:39 am »

uhh, divide by 256 to snap to a pixel.
From there, before you draw anything but the ground or solid platforms, use pxl-test(x,y+#) the plus number will be different depending on the height of your sprite. 0 means no pixel there, 1 means pixel there

hellninjas · « **Reply #2 on:** May 31, 2012, 11:44:34 am »

So..

Code: [Select]

:If getKey(1) and (pxl-test(X/256,Y/256+4)=0)

Happybobjr · « **Reply #3 on:** May 31, 2012, 11:53:14 am »

probably not. You said there is acceleration, which adds another dimension into it.

try...
:If getKey(1)
:*calculations in movement and stored to another variable, such as Z, as would be resulting location*
:If pxl-test(X/256,Z/256+4)=0
:Z->Y
:else
:Z + 256 -> Y
:end
:end

Try that.

you my need to change it to be relevant to your code.

Edit: added an example program.

Author Topic: Never got around to asking :P (Read 2747 times)

hellninjas

Never got around to asking :P

Happybobjr

Re: Never got around to asking :P

hellninjas

Re: Never got around to asking :P

Happybobjr

Re: Never got around to asking :P