Here's a small code snippet that allows you to enter "debug mode" and then go frame by frame through your game.
The idea is, that
_update() wraps the actual
update() function, and
_draw() wraps the actual
So you can have extra output only drawn in debug mode, and go frame by frame through the game to do some bug hunting.
It would also allow to append to a debug file only if debug mode is enabled.
It's pretty simple code, but quite helpful.
To switch to release mode, all you need to do is to swap the names of _draw() and draw() and _update() and update().
function _init() poke(0x5f2d, 0x01) debug=false waitframe=false t=0 end function _update() if stat(30) then local ch=stat(31) if ch == "d" then if debug then waitframe = false debug = false else debug=true end end if debug and ch==" " then waitframe = false end end if not waitframe then update() if debug then waitframe = true end end end function update() t+=1 end function _draw() draw() -- debug information here if debug then print(debug,0,123,7) end end function draw() cls() print(t,2,2,7) end
can you explain the difference with the built-in step-by-step mode? https://www.lexaloffle.com/dl/docs/pico-8_manual.html#RESUME
Sure. One allows you to stop the game ad then type commands and step forward.
The other allows you to do this while inside the game.
And, with slight modifaction allows you also to slow/down speedup the game. it also allows you to display certain information only when needed w/o having to exit the game, etc.
It's a different use case.
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