i have problems with mouse click , when i press mouse 5 time --> it draw 13 time .

my code :

mouse = {
    x=0,
    y=0,   
    btng=0,--left btn
    btnd=0,--right btn        
    btnm=0,--mid btn
  init = function()
    poke(0x5f2d, 1)
  end,
  update = function()
    local x,y = stat(32)-1,stat(33)-1
    mouse.x,mouse.y = x,y
    if(stat(34)==0)then
        mouse.btng=0
        mouse.btnd=0
        mouse.btnm=0
    end
    if(stat(34)==1)then         
        mouse.btng=1         
        mouse.btnd=0
        mouse.btnm=0
    end     
    if(stat(34)==2)then         
        mouse.btng=0         
        mouse.btnd=1
        mouse.btnm=0
    end     
    if(stat(34)==4)then         
        mouse.btng=0         
        mouse.btnd=0
        mouse.btnm=1
    end  
 end
}

I think the issue is that pico8 doesn’t do any debouncing for you, so mouse button presses are not aligned to game loop frames. You would need to keep track of the button state yourself to detect if it’s newly pressed in this frame or newly released.

Stat reference: https://pico-8.fandom.com/wiki/Stat#.7B30.E2.80.A636.7D_Mouse_and_keyboard_in_.22devkit_mode.22