Comment author: @Spencer-Zhang

Created attachment 74
Test case for the bug. The script used is included, and is simple enough to speak for itself.

Attached file: bugtest.zip (application/x-zip-compressed, 10855 bytes)
Description: Test case for the bug. The script used is included, and is simple enough to speak for itself.

Comment author: @rversteegen

I've heard this bug before. I was talking about it with Cube, and I don't know what happened, probably
Cube reported his own keyispressed problems, but the testcase we ended up with for Bug bz⁠#140 wasn't
about the double keyispressed problem but was about textbox issues? and I forgot about the original
symptom, probably concluding it wan't keyispressed's fault. Actually you seem to have a textbox there.
Maybe Bug bz⁠#140 needs reopening.

Comment author: @Spencer-Zhang

It's not limited to textboxes. I used textboxes here because it seemed to be
the easiest way to get results. The same problem showed up in my game, which
had nothing to do with textboxes, and which is much too complicated to use as a
test case, but which I'm going to link to as a reference anyways.
http://rmsephy.250free.com/batdemo1.zip

Comment author: @pkmnfrk

I tried a simple test script, since I thought I noticed similar behaviour at one
point:

while(true) do, begin
if(key is pressed(key:A)) then (alter npc(0,npc stat: palette,1)) else
(alter npc(0,npc stat: palette,0))
if(key is pressed(key:S)) then (alter npc(1,npc stat: palette,1)) else
(alter npc(1,npc stat: palette,0))
if(key is pressed(key:A), and, key is pressed(key:S)) then (alter npc(2,npc
stat: palette,1)) else (alter npc(2,npc stat: palette,0))
wait(1)
end

I made a simple game with a few "button" npcs. That script alters the palettes
of the npcs depending on the states of the respective keys (A and S) (palette 1
(a red colour) for pressed, or palette 0 (a grey colour) for unpressed). And, I
had a button with both keys on it, set to highlight if both keys are pressed.

When I ran the game (with that script set as the new game script), I got these
results:

Pressing A: A lights up, S and AS do not.
Pressing S: S lights up, A and AS do not.
Pressing A and S simultaneously: All keys light up.
Pressing A, waiting a second, and pressing S: A lights up, then S lights up. AS
flickers a bit, then lights up.

So. I'm guessing it's that flickering in the last case that is the problem. I'm
also attaching the test case, script included.

Comment author: @pkmnfrk

Created attachment 75
"Key is Pressed" test case

Try keyis.rpg and see for yourself.

Attached file: keyis.zip (application/x-zip, 10740 bytes)
Description: "Key is Pressed" test case

Comment author: @rversteegen

Fixed. This bug is alot simpler than I thought it was (which had kept me away).