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  1. josefnpat revised this gist Feb 6, 2018. 1 changed file with 1 addition and 1 deletion.
    2 changes: 1 addition & 1 deletion readme.md
    View file
    Original file line number Diff line number Diff line change
    @@ -13,7 +13,7 @@ You can always view the [manual](http://www.lexaloffle.com/pico-8.php?page=manua
    * PICO-8's Lua has single line shorthand for if then else operators. → _Compare to ternary?: PICO-8 Lua: `IF (NOT B) THEN I=1 J=2 END` vs Lua: `i,j = not b and 1,j or i,2`._
    * PICO-8's Lua has a different precision (16:16 fixed point) vs Lua's double-precision floating-point.
    * PICO-8's Lua has additional Comparison operators/relational operators for "Not Equal To" (`~=`): `!=`
    * There is no `io` object. → _There is technically "Cartride Data" that you can use for persistant information - see `cartdata()`_
    * There is no `io` object. → _There is technically "Cartridge Data" that you can use for persistant information - see `cartdata()`_
    * `load()` has been overwritten with a PICO-8 function.
    * PICO-8 introduces many other global functions (see [manual](http://www.lexaloffle.com/pico-8.php?page=manual)).
    * There are general rounding errors: `print("-1"*1 == -1") -- false`
  2. josefnpat revised this gist Jan 31, 2017. 1 changed file with 15 additions and 15 deletions.
    30 changes: 15 additions & 15 deletions readme.md
    View file
    Original file line number Diff line number Diff line change
    @@ -39,24 +39,24 @@ print(munpack{1, 2, 3, 4})
    *Thanks to bartbes for this much better version*

    ```lua
    function pow(x,a)
    if (a==0) return 1
    if (a<0) x,a=1/x,-a
    local ret,a0,xn=1,flr(a),x
    a-=a0
    while a0>=1 do
    if (a0%2>=1) ret*=xn
    xn,a0=xn*xn,shr(a0,1)
    end
    while a>0 do
    while a<1 do x,a=sqrt(x),a+a end
    ret,a=ret*x,a-1
    end
    return ret
    function pow(x,a)
    if (a==0) return 1
    if (a<0) x,a=1/x,-a
    local ret,a0,xn=1,flr(a),x
    a-=a0
    while a0>=1 do
    if (a0%2>=1) ret*=xn
    xn,a0=xn*xn,shr(a0,1)
    end
    while a>0 do
    while a<1 do x,a=sqrt(x),a+a end
    ret,a=ret*x,a-1
    end
    return ret
    end
    ```

    *Thanks to samhocevar for this implementation ([link](http://www.lexaloffle.com/bbs/?pid=30791#p30791))
    *Thanks to samhocevar for this implementation ([link](http://www.lexaloffle.com/bbs/?pid=30791#p30791))*

    ## Lua's String Library

  3. josefnpat revised this gist Jan 31, 2017. 1 changed file with 20 additions and 0 deletions.
    20 changes: 20 additions & 0 deletions readme.md
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    Original file line number Diff line number Diff line change
    @@ -38,6 +38,26 @@ print(munpack{1, 2, 3, 4})
    ```
    *Thanks to bartbes for this much better version*

    ```lua
    function pow(x,a)
    if (a==0) return 1
    if (a<0) x,a=1/x,-a
    local ret,a0,xn=1,flr(a),x
    a-=a0
    while a0>=1 do
    if (a0%2>=1) ret*=xn
    xn,a0=xn*xn,shr(a0,1)
    end
    while a>0 do
    while a<1 do x,a=sqrt(x),a+a end
    ret,a=ret*x,a-1
    end
    return ret
    end
    ```

    *Thanks to samhocevar for this implementation ([link](http://www.lexaloffle.com/bbs/?pid=30791#p30791))

    ## Lua's String Library

    `0.1.3`
  4. josefnpat revised this gist Jun 5, 2016. 1 changed file with 1 addition and 1 deletion.
    2 changes: 1 addition & 1 deletion readme.md
    View file
    Original file line number Diff line number Diff line change
    @@ -17,7 +17,7 @@ You can always view the [manual](http://www.lexaloffle.com/pico-8.php?page=manua
    * `load()` has been overwritten with a PICO-8 function.
    * PICO-8 introduces many other global functions (see [manual](http://www.lexaloffle.com/pico-8.php?page=manual)).
    * There are general rounding errors: `print("-1"*1 == -1") -- false`
    * Global functions and variables have been removed: `collectgarbage`, `dofile`, `error`, `ipairs`, `loadfile`, `loadstring`, `module`, `package`, `pcall`, `rawequal`, `rawlen`, `rawget`, `require`, `select`, `tonumber`, `tostring`, `unpack`, `xpcall`, `_VERSION`, and `getmetatable`.
    * Global functions and variables have been removed: `collectgarbage`, `dofile`, `error`, `ipairs`, `loadfile`, `loadstring`, `math`, `module`, `package`, `pcall`, `rawequal`, `rawlen`, `rawget`, `require`, `select`, `string`, `table`, `tonumber`, `tostring`, `unpack`, `xpcall`, `_VERSION`, and `getmetatable`.
    * `_G` global table has been removed.
    * `assert()` and `type()` were removed in `0.1.3` but added back in `0.1.4`.
    * `coroutine.[create|resume|status|yield]()` was removed in `0.1.3` but added in `0.1.6` as `coroutine()`, `cocreate()`, `coresume()`, `costatus()` and `yield()` respectively.
  5. josefnpat revised this gist Jun 5, 2016. 1 changed file with 0 additions and 7 deletions.
    7 changes: 0 additions & 7 deletions readme.md
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    Original file line number Diff line number Diff line change
    @@ -38,13 +38,6 @@ print(munpack{1, 2, 3, 4})
    ```
    *Thanks to bartbes for this much better version*

    `0.1.2`

    * `ipairs` does not have the proper indexing and will loop over the first element infinitely . → _use `pairs` instead_
    * `_VERSION` exists, but can't be accessed via the editor. → _It returns `Lua 5.2`._
    * `rawlen` returns small fractions [incorrect value]
    * `[s|g]etmetatable` needs to be tested.

    ## Lua's String Library

    `0.1.3`
  6. josefnpat revised this gist Jun 5, 2016. 1 changed file with 1 addition and 1 deletion.
    2 changes: 1 addition & 1 deletion readme.md
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    Original file line number Diff line number Diff line change
    @@ -20,7 +20,7 @@ You can always view the [manual](http://www.lexaloffle.com/pico-8.php?page=manua
    * Global functions and variables have been removed: `collectgarbage`, `dofile`, `error`, `ipairs`, `loadfile`, `loadstring`, `module`, `package`, `pcall`, `rawequal`, `rawlen`, `rawget`, `require`, `select`, `tonumber`, `tostring`, `unpack`, `xpcall`, `_VERSION`, and `getmetatable`.
    * `_G` global table has been removed.
    * `assert()` and `type()` were removed in `0.1.3` but added back in `0.1.4`.
    * `coroutine.[create|resume|status|yield]()` was removed in `0.1.3` but added in `0.1.6` as `coroutine()`, `cocreate()`, `coresume()`, `costatus()` and `yield()`.
    * `coroutine.[create|resume|status|yield]()` was removed in `0.1.3` but added in `0.1.6` as `coroutine()`, `cocreate()`, `coresume()`, `costatus()` and `yield()` respectively.
    * `setmetatable` was removed in `0.1.3` but added back in `0.1.6`

    ## Alternates to missing functions
  7. josefnpat revised this gist Jun 5, 2016. 1 changed file with 1 addition and 1 deletion.
    2 changes: 1 addition & 1 deletion readme.md
    View file
    Original file line number Diff line number Diff line change
    @@ -14,7 +14,7 @@ You can always view the [manual](http://www.lexaloffle.com/pico-8.php?page=manua
    * PICO-8's Lua has a different precision (16:16 fixed point) vs Lua's double-precision floating-point.
    * PICO-8's Lua has additional Comparison operators/relational operators for "Not Equal To" (`~=`): `!=`
    * There is no `io` object. → _There is technically "Cartride Data" that you can use for persistant information - see `cartdata()`_
    * `load` has been overwritten with a PICO-8 function.
    * `load()` has been overwritten with a PICO-8 function.
    * PICO-8 introduces many other global functions (see [manual](http://www.lexaloffle.com/pico-8.php?page=manual)).
    * There are general rounding errors: `print("-1"*1 == -1") -- false`
    * Global functions and variables have been removed: `collectgarbage`, `dofile`, `error`, `ipairs`, `loadfile`, `loadstring`, `module`, `package`, `pcall`, `rawequal`, `rawlen`, `rawget`, `require`, `select`, `tonumber`, `tostring`, `unpack`, `xpcall`, `_VERSION`, and `getmetatable`.
  8. josefnpat revised this gist Jun 5, 2016. 1 changed file with 0 additions and 1 deletion.
    1 change: 0 additions & 1 deletion readme.md
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    Original file line number Diff line number Diff line change
    @@ -7,7 +7,6 @@ You can always view the [manual](http://www.lexaloffle.com/pico-8.php?page=manua
    ## General

    * anything written in uppercase the PICO-8 editor or .p8 is made lowercase by the editor. → _editing the .p8 file directly can work_

    * `print(function() end)` outputs the string `function` instead of the string `function: 0x0000000`.
    * `print` takes three arguments (string,x,y) → _use `printh()` instead_
    * PICO-8's Lua supports a few [Compound assignment operators](https://en.wikipedia.org/wiki/Operators_in_C_and_C%2B%2B#Compound_assignment_operators): `+=`,`-=`,`*=`,`/=`,`%=`
  9. josefnpat revised this gist Jun 5, 2016. 1 changed file with 1 addition and 1 deletion.
    2 changes: 1 addition & 1 deletion readme.md
    View file
    Original file line number Diff line number Diff line change
    @@ -2,7 +2,7 @@ This information applies to the PICO-8 `0.1.6` release.

    This document is here to help folks with a proficiency in Lua understand the limitations and discrepencies between Lua and PICO-8's Lua.

    You can always view the [manual](http://www.lexaloffle.com/pico-8.php?page=manual) or [yellowafterlife's extended 0.1.1 manual](https://dl.dropboxusercontent.com/u/3594143/yal.cc/r/picodoc/index.html).
    You can always view the [manual](http://www.lexaloffle.com/pico-8.php?page=manual) or [yellowafterlife's extended `0.1.1` manual](https://dl.dropboxusercontent.com/u/3594143/yal.cc/r/picodoc/index.html).

    ## General

  10. josefnpat revised this gist Jun 5, 2016. 1 changed file with 3 additions and 3 deletions.
    6 changes: 3 additions & 3 deletions readme.md
    View file
    Original file line number Diff line number Diff line change
    @@ -18,11 +18,11 @@ You can always view the [manual](http://www.lexaloffle.com/pico-8.php?page=manua
    * `load` has been overwritten with a PICO-8 function.
    * PICO-8 introduces many other global functions (see [manual](http://www.lexaloffle.com/pico-8.php?page=manual)).
    * There are general rounding errors: `print("-1"*1 == -1") -- false`
    * Global functions and variables have been removed: `assert`, `collectgarbage`, `dofile`, `error`, `ipairs`, `loadfile`, `loadstring`, `module`, `package`, `pcall`, `rawequal`, `rawlen`, `rawget`, `require`, `select`, `tonumber`, `tostring`, `type`, `unpack`, `xpcall`, `_VERSION`, and `getmetatable`.
    * Global functions and variables have been removed: `collectgarbage`, `dofile`, `error`, `ipairs`, `loadfile`, `loadstring`, `module`, `package`, `pcall`, `rawequal`, `rawlen`, `rawget`, `require`, `select`, `tonumber`, `tostring`, `unpack`, `xpcall`, `_VERSION`, and `getmetatable`.
    * `_G` global table has been removed.
    * `setmetatable` was removed in `0.1.3` but added back in `0.1.6`
    * `coroutine.[create|resume|status|yield]()` was removed in `0.1.3` but added in `0.1.6` as `coroutine()`, `cocreate()`, `coresume()`, `costatus()` and `yield()`.
    * `assert()` and `type()` were removed in `0.1.3` but added back in `0.1.4`.
    * `coroutine.[create|resume|status|yield]()` was removed in `0.1.3` but added in `0.1.6` as `coroutine()`, `cocreate()`, `coresume()`, `costatus()` and `yield()`.
    * `setmetatable` was removed in `0.1.3` but added back in `0.1.6`

    ## Alternates to missing functions

  11. josefnpat revised this gist Jun 5, 2016. 1 changed file with 5 additions and 2 deletions.
    7 changes: 5 additions & 2 deletions readme.md
    View file
    Original file line number Diff line number Diff line change
    @@ -14,12 +14,15 @@ You can always view the [manual](http://www.lexaloffle.com/pico-8.php?page=manua
    * PICO-8's Lua has single line shorthand for if then else operators. → _Compare to ternary?: PICO-8 Lua: `IF (NOT B) THEN I=1 J=2 END` vs Lua: `i,j = not b and 1,j or i,2`._
    * PICO-8's Lua has a different precision (16:16 fixed point) vs Lua's double-precision floating-point.
    * PICO-8's Lua has additional Comparison operators/relational operators for "Not Equal To" (`~=`): `!=`
    * There is no `io` object. → _There is technically "Cartride Data" that you can use for persistant information_
    * There is no `io` object. → _There is technically "Cartride Data" that you can use for persistant information - see `cartdata()`_
    * `load` has been overwritten with a PICO-8 function.
    * PICO-8 introduces many other global functions (see [manual](http://www.lexaloffle.com/pico-8.php?page=manual)).
    * There are general rounding errors: `print("-1"*1 == -1") -- false`
    * Global functions and variables have been removed: `assert`, `collectgarbage`, `coroutine`, `dofile`, `error`, `ipairs`, `loadfile`, `loadstring`, `module`, `package`, `pcall`, `rawequal`, `rawlen`, `rawget`, `require`, `select`, `tonumber`, `tostring`, `type`, `unpack`, `xpcall`, `_VERSION`, and `[s|g]etmetatable`.
    * Global functions and variables have been removed: `assert`, `collectgarbage`, `dofile`, `error`, `ipairs`, `loadfile`, `loadstring`, `module`, `package`, `pcall`, `rawequal`, `rawlen`, `rawget`, `require`, `select`, `tonumber`, `tostring`, `type`, `unpack`, `xpcall`, `_VERSION`, and `getmetatable`.
    * `_G` global table has been removed.
    * `setmetatable` was removed in `0.1.3` but added back in `0.1.6`
    * `coroutine.[create|resume|status|yield]()` was removed in `0.1.3` but added in `0.1.6` as `coroutine()`, `cocreate()`, `coresume()`, `costatus()` and `yield()`.
    * `assert()` and `type()` were removed in `0.1.3` but added back in `0.1.4`.

    ## Alternates to missing functions

  12. josefnpat revised this gist Jun 5, 2016. 1 changed file with 4 additions and 4 deletions.
    8 changes: 4 additions & 4 deletions readme.md
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    @@ -1,14 +1,14 @@
    This information applies to the PICO-8 `0.1.3` release.
    This information applies to the PICO-8 `0.1.6` release.

    This document is here to help folks with a proficiency in Lua understand the limitations and discrepencies between Lua and PICO-8's Lua.

    You can always view the [manual](http://www.lexaloffle.com/pico-8.php?page=manual) or [yellowafterlife's extended manual](https://dl.dropboxusercontent.com/u/3594143/yal.cc/r/picodoc/index.html).
    You can always view the [manual](http://www.lexaloffle.com/pico-8.php?page=manual) or [yellowafterlife's extended 0.1.1 manual](https://dl.dropboxusercontent.com/u/3594143/yal.cc/r/picodoc/index.html).

    ## General

    * anything written in uppercase the PICO-8 editor or .p8 is made lowercase by the editor. → _editing the .p8 file directly can work_
    * multi line comments don't work correctly. → _use single lines to get around this_
    * `print(function() end)` segfaults → _wrapping it in a `tostring()` will fix it_

    * `print(function() end)` outputs the string `function` instead of the string `function: 0x0000000`.
    * `print` takes three arguments (string,x,y) → _use `printh()` instead_
    * PICO-8's Lua supports a few [Compound assignment operators](https://en.wikipedia.org/wiki/Operators_in_C_and_C%2B%2B#Compound_assignment_operators): `+=`,`-=`,`*=`,`/=`,`%=`
    * PICO-8's Lua has single line shorthand for if then else operators. → _Compare to ternary?: PICO-8 Lua: `IF (NOT B) THEN I=1 J=2 END` vs Lua: `i,j = not b and 1,j or i,2`._
  13. josefnpat revised this gist Jun 5, 2016. 1 changed file with 1 addition and 1 deletion.
    2 changes: 1 addition & 1 deletion readme.md
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    @@ -1,4 +1,4 @@
    This information applies to the PICO-8 `0.1.2` release.
    This information applies to the PICO-8 `0.1.3` release.

    This document is here to help folks with a proficiency in Lua understand the limitations and discrepencies between Lua and PICO-8's Lua.

  14. josefnpat revised this gist Nov 17, 2015. 1 changed file with 8 additions and 19 deletions.
    27 changes: 8 additions & 19 deletions readme.md
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    Original file line number Diff line number Diff line change
    @@ -25,27 +25,16 @@ You can always view the [manual](http://www.lexaloffle.com/pico-8.php?page=manua

    ### unpack
    ```lua
    function unpack(arg)
    local argcount = #arg
    if argcount == 0 then
    return
    elseif argcount == 1 then
    return arg[1]
    elseif argcount == 2 then
    return arg[1],arg[2]
    elseif argcount == 3 then
    return arg[1],arg[2],arg[3]
    elseif argcount == 4 then
    return arg[1],arg[2],arg[3],arg[4]
    elseif argcount == 5 then
    return arg[1],arg[2],arg[3],arg[4],arg[5]
    elseif argcount == 6 then
    return arg[1],arg[2],arg[3],arg[4],arg[5],arg[6]
    else
    print("warning: please extend unpack2 to provide larger unpack")
    end
    function munpack(t, from, to)
    from = from or 1
    to = to or #t
    if from > to then return end
    return t[from], munpack(t, from+1, to)
    end

    print(munpack{1, 2, 3, 4})
    ```
    *Thanks to bartbes for this much better version*

    `0.1.2`

  15. josefnpat revised this gist Oct 25, 2015. 1 changed file with 26 additions and 0 deletions.
    26 changes: 26 additions & 0 deletions readme.md
    View file
    Original file line number Diff line number Diff line change
    @@ -21,6 +21,32 @@ You can always view the [manual](http://www.lexaloffle.com/pico-8.php?page=manua
    * Global functions and variables have been removed: `assert`, `collectgarbage`, `coroutine`, `dofile`, `error`, `ipairs`, `loadfile`, `loadstring`, `module`, `package`, `pcall`, `rawequal`, `rawlen`, `rawget`, `require`, `select`, `tonumber`, `tostring`, `type`, `unpack`, `xpcall`, `_VERSION`, and `[s|g]etmetatable`.
    * `_G` global table has been removed.

    ## Alternates to missing functions

    ### unpack
    ```lua
    function unpack(arg)
    local argcount = #arg
    if argcount == 0 then
    return
    elseif argcount == 1 then
    return arg[1]
    elseif argcount == 2 then
    return arg[1],arg[2]
    elseif argcount == 3 then
    return arg[1],arg[2],arg[3]
    elseif argcount == 4 then
    return arg[1],arg[2],arg[3],arg[4]
    elseif argcount == 5 then
    return arg[1],arg[2],arg[3],arg[4],arg[5]
    elseif argcount == 6 then
    return arg[1],arg[2],arg[3],arg[4],arg[5],arg[6]
    else
    print("warning: please extend unpack2 to provide larger unpack")
    end
    end
    ```

    `0.1.2`

    * `ipairs` does not have the proper indexing and will loop over the first element infinitely . → _use `pairs` instead_
  16. josefnpat revised this gist Oct 15, 2015. 1 changed file with 1 addition and 1 deletion.
    2 changes: 1 addition & 1 deletion readme.md
    View file
    Original file line number Diff line number Diff line change
    @@ -18,7 +18,7 @@ You can always view the [manual](http://www.lexaloffle.com/pico-8.php?page=manua
    * `load` has been overwritten with a PICO-8 function.
    * PICO-8 introduces many other global functions (see [manual](http://www.lexaloffle.com/pico-8.php?page=manual)).
    * There are general rounding errors: `print("-1"*1 == -1") -- false`
    * `assert`, `dofile`, `tostring`, `type`, `ipairs`, `_VERSION`, `rawlen` and `[s|g]etmetatable` have been removed.
    * Global functions and variables have been removed: `assert`, `collectgarbage`, `coroutine`, `dofile`, `error`, `ipairs`, `loadfile`, `loadstring`, `module`, `package`, `pcall`, `rawequal`, `rawlen`, `rawget`, `require`, `select`, `tonumber`, `tostring`, `type`, `unpack`, `xpcall`, `_VERSION`, and `[s|g]etmetatable`.
    * `_G` global table has been removed.

    `0.1.2`
  17. josefnpat revised this gist Oct 15, 2015. 1 changed file with 9 additions and 2 deletions.
    11 changes: 9 additions & 2 deletions readme.md
    View file
    Original file line number Diff line number Diff line change
    @@ -18,7 +18,7 @@ You can always view the [manual](http://www.lexaloffle.com/pico-8.php?page=manua
    * `load` has been overwritten with a PICO-8 function.
    * PICO-8 introduces many other global functions (see [manual](http://www.lexaloffle.com/pico-8.php?page=manual)).
    * There are general rounding errors: `print("-1"*1 == -1") -- false`
    * `tostring`, `type`, `ipairs`, `_VERSION`, `rawlen` and `[s|g]etmetatable` have been removed.
    * `assert`, `dofile`, `tostring`, `type`, `ipairs`, `_VERSION`, `rawlen` and `[s|g]etmetatable` have been removed.
    * `_G` global table has been removed.

    `0.1.2`
    @@ -123,7 +123,14 @@ __This function has not been compared, but seems intact.__
    * `all` function. Not sure what it does.
    * `_set_mainloop_exists` function. Most likely toggles a variable in a local scope.
    * `stop` function. Stops game at current point so you can debug things.
    * The `bit32` table is no longer available.

    `0.1.2`

    ## bit32 library

    `0.1.3`

    The `bit32` table is no longer available.

    `0.1.2`

  18. josefnpat revised this gist Oct 15, 2015. 1 changed file with 1 addition and 1 deletion.
    2 changes: 1 addition & 1 deletion readme.md
    View file
    Original file line number Diff line number Diff line change
    @@ -18,7 +18,7 @@ You can always view the [manual](http://www.lexaloffle.com/pico-8.php?page=manua
    * `load` has been overwritten with a PICO-8 function.
    * PICO-8 introduces many other global functions (see [manual](http://www.lexaloffle.com/pico-8.php?page=manual)).
    * There are general rounding errors: `print("-1"*1 == -1") -- false`
    * `ipairs`,`_VERSION`,`rawlen` and `[s|g]etmetatable` have been removed.
    * `tostring`, `type`, `ipairs`, `_VERSION`, `rawlen` and `[s|g]etmetatable` have been removed.
    * `_G` global table has been removed.

    `0.1.2`
  19. josefnpat revised this gist Oct 15, 2015. 1 changed file with 45 additions and 7 deletions.
    52 changes: 45 additions & 7 deletions readme.md
    View file
    Original file line number Diff line number Diff line change
    @@ -14,17 +14,28 @@ You can always view the [manual](http://www.lexaloffle.com/pico-8.php?page=manua
    * PICO-8's Lua has single line shorthand for if then else operators. → _Compare to ternary?: PICO-8 Lua: `IF (NOT B) THEN I=1 J=2 END` vs Lua: `i,j = not b and 1,j or i,2`._
    * PICO-8's Lua has a different precision (16:16 fixed point) vs Lua's double-precision floating-point.
    * PICO-8's Lua has additional Comparison operators/relational operators for "Not Equal To" (`~=`): `!=`
    * `ipairs` does not have the proper indexing and will loop over the first element infinitely . → _use `pairs` instead_
    * There is no `io` object. → _There is technically "Cartride Data" that you can use for persistant information_
    * `_VERSION` exists, but can't be accessed via the editor. → _It returns `Lua 5.2`._
    * `load` has been overwritten with a PICO-8 function.
    * PICO-8 introduces many other global functions (see [manual](http://www.lexaloffle.com/pico-8.php?page=manual)).
    * There are general rounding errors: `print("-1"*1 == -1") -- false`
    * `ipairs`,`_VERSION`,`rawlen` and `[s|g]etmetatable` have been removed.
    * `_G` global table has been removed.

    `0.1.2`

    * `ipairs` does not have the proper indexing and will loop over the first element infinitely . → _use `pairs` instead_
    * `_VERSION` exists, but can't be accessed via the editor. → _It returns `Lua 5.2`._
    * `rawlen` returns small fractions [incorrect value]
    * `[s|g]etmetatable` needs to be tested.
    * There are general rounding errors: `print("-1"*1 == -1") -- false`

    ## Lua's String Library

    `0.1.3`

    The `string` table is no longer available.

    `0.1.2`

    * strings that use upper case pattern matching will not be able to be entered into the editor directly.
    * `string.byte` returns a fraction [incorrect value]
    * `string.char` operates differently:
    @@ -41,12 +52,24 @@ You can always view the [manual](http://www.lexaloffle.com/pico-8.php?page=manua

    ## Lua's Table Library

    `0.1.3`

    The `table` table is no longer available.

    `0.1.2`

    * `table.insert(t,o)` does not insert the proper key. → _use `add(t,o)` instead_
    * `table.insert(t,p,o)` does not insert the proper key. Attempting to insert beyond table initialization causes an position out of bounds error.
    * `table.remove(t,p)` removes the correct value, but then assocates every following value with the key before it. → _use `del(t,o)` instead_

    ## Lua's Math Library

    `0.1.3`

    The `math` table is no longer available.

    `0.1.2`

    * `math.a[cos|sin|tan][2]` does not work correctly. [Rounding errors?] → _use `atan2()` instead of `math.atan2()`. Untested versions [here](http://pastebin.com/RsjHmCV8)_
    * `math.[floor|ceil]` returns input [incorrect value] → _use `flr()` instead. For `math.ceil()`, use `function ceil(x) return -flr(-x) end`_
    * `math.[cos|sin]` return zero [incorrect value] → _use `cos()` and `sin()`. Functions take 0..1 instead of 0..PI*2, and `sin()` is inverted._
    @@ -66,6 +89,12 @@ You can always view the [manual](http://www.lexaloffle.com/pico-8.php?page=manua

    ## Lua's OS library

    `0.1.3`

    The `os` table is no longer available.

    `0.1.2`

    * `os.date` works correctly, but due to a lack of upper case characters, it does not render correctly.
    * `os.time` returns the incorrect value [rounding issues]
    * `os.getenv` works correctly, but the editor cannot write upper case characters.
    @@ -75,18 +104,27 @@ You can always view the [manual](http://www.lexaloffle.com/pico-8.php?page=manua

    ## Debug Library

    __this function has not been compared, but seems intact.__
    `0.1.3`

    The `debug` table is no longer available.

    `0.1.2`

    __This function has not been compared, but seems intact.__

    ## Undocumented PICO-8 functions

    * `bit32` table contains: `extract`,`bnot`,`rrotate`,`arshift`,`btest`,`bxor`,`replace`,`band`,`lshift`,`rshift`,`lrotate`,`bor`
    * `shutdown` quits the `pico8` binary.
    * `_update_buttons` function. Has no arguments.
    * `_p8_program` function. Causes out of memory error when called.
    * `ls` function. Lists cache cart directory as root and colors output using print statement.
    * `decompress` function. Not sure what it does.
    * `c` variable may sometime be globally set. Seems to be a scope error for some other function.
    * `trace` function. I'm guessing it's for the runtime errors.
    * `all` function. Not sure what it does.
    * `_set_mainloop_exists` function. Most likely toggles a variable in a local scope.
    * `stop` function. Stops game at current point so you can debug things.
    * `stop` function. Stops game at current point so you can debug things.
    * The `bit32` table is no longer available.

    `0.1.2`

    * `bit32` table contains: `extract`,`bnot`,`rrotate`,`arshift`,`btest`,`bxor`,`replace`,`band`,`lshift`,`rshift`,`lrotate`,`bor`
  20. josefnpat revised this gist Oct 15, 2015. 1 changed file with 1 addition and 1 deletion.
    2 changes: 1 addition & 1 deletion readme.md
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    Original file line number Diff line number Diff line change
    @@ -6,7 +6,7 @@ You can always view the [manual](http://www.lexaloffle.com/pico-8.php?page=manua

    ## General

    * anything written in uppercase the PICO-8 editor or .p8 is made lowercase by the editor. → _editing the .p8 file directly can work__
    * anything written in uppercase the PICO-8 editor or .p8 is made lowercase by the editor. → _editing the .p8 file directly can work_
    * multi line comments don't work correctly. → _use single lines to get around this_
    * `print(function() end)` segfaults → _wrapping it in a `tostring()` will fix it_
    * `print` takes three arguments (string,x,y) → _use `printh()` instead_
  21. josefnpat revised this gist Oct 15, 2015. 1 changed file with 1 addition and 1 deletion.
    2 changes: 1 addition & 1 deletion readme.md
    View file
    Original file line number Diff line number Diff line change
    @@ -52,7 +52,7 @@ You can always view the [manual](http://www.lexaloffle.com/pico-8.php?page=manua
    * `math.[cos|sin]` return zero [incorrect value] → _use `cos()` and `sin()`. Functions take 0..1 instead of 0..PI*2, and `sin()` is inverted._
    * `math.tan` does not work correctly. [Rounding errors?] → _use math instead: ![http://i.imgur.com/Ao7BtAG.png](http://i.imgur.com/Ao7BtAG.png)_
    * `math.[cos|sin|tan]h` does not work correctly. [Rounding errors?]
    * `math.[deg|rad]` return zero [incorrect value] → _use math instead: ![http://i.imgur.com/mIcI45p.png](http://i.imgur.com/mIcI45p.png)
    * `math.[deg|rad]` return zero [incorrect value] → _use math instead: ![http://i.imgur.com/mIcI45p.png](http://i.imgur.com/mIcI45p.png)_
    * `math.[exp|log]` does not work correctly [Rounding errors?]
    * `math.log10` is nil [does not exist]
    * `math.pow` does not work correctly [returns -maxint] → _use the `^` operator instead_
  22. josefnpat revised this gist Oct 15, 2015. 1 changed file with 3 additions and 3 deletions.
    6 changes: 3 additions & 3 deletions readme.md
    View file
    Original file line number Diff line number Diff line change
    @@ -52,17 +52,17 @@ You can always view the [manual](http://www.lexaloffle.com/pico-8.php?page=manua
    * `math.[cos|sin]` return zero [incorrect value] → _use `cos()` and `sin()`. Functions take 0..1 instead of 0..PI*2, and `sin()` is inverted._
    * `math.tan` does not work correctly. [Rounding errors?] → _use math instead: ![http://i.imgur.com/Ao7BtAG.png](http://i.imgur.com/Ao7BtAG.png)_
    * `math.[cos|sin|tan]h` does not work correctly. [Rounding errors?]
    * `math.[deg|rad]` return zero [incorrect value]
    * `math.[deg|rad]` return zero [incorrect value] → _use math instead: ![http://i.imgur.com/mIcI45p.png](http://i.imgur.com/mIcI45p.png)
    * `math.[exp|log]` does not work correctly [Rounding errors?]
    * `math.log10` is nil [does not exist]
    * `math.pow` does not work correctly [returns -maxint] → _use the `^` operator instead_
    * `math.modf` returns two zeros [incorrect value] → _use the `%` operator instead_
    * `math.sqrt` does not work correctly [Rounding errors?] → _use `sqrt()` instead_
    * `math.random` does not work correctly [returns zero] → _use `rnd()` instead_
    * `math.randomseed` cannot be verified until math.random is fixed [dependency issue] → _use `srand()` instead_
    * `math.frexp` does not return a value [incorrect return type] _but `math.ldexp()` works for some reason!_
    * `math.frexp` does not return a value [incorrect return type] → _but `math.ldexp()` works for some reason!_
    * `math.huge` is 0.5 [incorrect value and type]
    * `math.pi` is 5.341e-05 [incorrect value]
    * `math.pi` is 5.341e-05 [incorrect value] → _use a fixed value instead, e.g.: 3.14159_

    ## Lua's OS library

  23. josefnpat revised this gist Oct 15, 2015. 1 changed file with 1 addition and 1 deletion.
    2 changes: 1 addition & 1 deletion readme.md
    View file
    Original file line number Diff line number Diff line change
    @@ -50,7 +50,7 @@ You can always view the [manual](http://www.lexaloffle.com/pico-8.php?page=manua
    * `math.a[cos|sin|tan][2]` does not work correctly. [Rounding errors?] → _use `atan2()` instead of `math.atan2()`. Untested versions [here](http://pastebin.com/RsjHmCV8)_
    * `math.[floor|ceil]` returns input [incorrect value] → _use `flr()` instead. For `math.ceil()`, use `function ceil(x) return -flr(-x) end`_
    * `math.[cos|sin]` return zero [incorrect value] → _use `cos()` and `sin()`. Functions take 0..1 instead of 0..PI*2, and `sin()` is inverted._
    * `math.tan` does not work correctly. [Rounding errors?]
    * `math.tan` does not work correctly. [Rounding errors?] → _use math instead: ![http://i.imgur.com/Ao7BtAG.png](http://i.imgur.com/Ao7BtAG.png)_
    * `math.[cos|sin|tan]h` does not work correctly. [Rounding errors?]
    * `math.[deg|rad]` return zero [incorrect value]
    * `math.[exp|log]` does not work correctly [Rounding errors?]
  24. josefnpat revised this gist Oct 15, 2015. 1 changed file with 1 addition and 1 deletion.
    2 changes: 1 addition & 1 deletion readme.md
    View file
    Original file line number Diff line number Diff line change
    @@ -48,7 +48,7 @@ You can always view the [manual](http://www.lexaloffle.com/pico-8.php?page=manua
    ## Lua's Math Library

    * `math.a[cos|sin|tan][2]` does not work correctly. [Rounding errors?] → _use `atan2()` instead of `math.atan2()`. Untested versions [here](http://pastebin.com/RsjHmCV8)_
    * `math.[floor|ceil]` returns input [incorrect value] → _use `flr()` instead. For ceil, use `function ceil(x) return -flr(-x) end`_
    * `math.[floor|ceil]` returns input [incorrect value] → _use `flr()` instead. For `math.ceil()`, use `function ceil(x) return -flr(-x) end`_
    * `math.[cos|sin]` return zero [incorrect value] → _use `cos()` and `sin()`. Functions take 0..1 instead of 0..PI*2, and `sin()` is inverted._
    * `math.tan` does not work correctly. [Rounding errors?]
    * `math.[cos|sin|tan]h` does not work correctly. [Rounding errors?]
  25. josefnpat revised this gist Oct 15, 2015. 1 changed file with 1 addition and 1 deletion.
    2 changes: 1 addition & 1 deletion readme.md
    View file
    Original file line number Diff line number Diff line change
    @@ -48,7 +48,7 @@ You can always view the [manual](http://www.lexaloffle.com/pico-8.php?page=manua
    ## Lua's Math Library

    * `math.a[cos|sin|tan][2]` does not work correctly. [Rounding errors?] → _use `atan2()` instead of `math.atan2()`. Untested versions [here](http://pastebin.com/RsjHmCV8)_
    * `math.[floor|ceil]` returns input [incorrect value] → _use `flr()` instead_
    * `math.[floor|ceil]` returns input [incorrect value] → _use `flr()` instead. For ceil, use `function ceil(x) return -flr(-x) end`_
    * `math.[cos|sin]` return zero [incorrect value] → _use `cos()` and `sin()`. Functions take 0..1 instead of 0..PI*2, and `sin()` is inverted._
    * `math.tan` does not work correctly. [Rounding errors?]
    * `math.[cos|sin|tan]h` does not work correctly. [Rounding errors?]
  26. josefnpat revised this gist Oct 15, 2015. 1 changed file with 1 addition and 1 deletion.
    2 changes: 1 addition & 1 deletion readme.md
    View file
    Original file line number Diff line number Diff line change
    @@ -47,7 +47,7 @@ You can always view the [manual](http://www.lexaloffle.com/pico-8.php?page=manua

    ## Lua's Math Library

    * `math.a[cos|sin|tan][2]` does not work correctly. [Rounding errors?] → _use `atan2()` instead of `math.atan2()`_
    * `math.a[cos|sin|tan][2]` does not work correctly. [Rounding errors?] → _use `atan2()` instead of `math.atan2()`. Untested versions [here](http://pastebin.com/RsjHmCV8)_
    * `math.[floor|ceil]` returns input [incorrect value] → _use `flr()` instead_
    * `math.[cos|sin]` return zero [incorrect value] → _use `cos()` and `sin()`. Functions take 0..1 instead of 0..PI*2, and `sin()` is inverted._
    * `math.tan` does not work correctly. [Rounding errors?]
  27. josefnpat revised this gist Oct 15, 2015. 1 changed file with 2 additions and 2 deletions.
    4 changes: 2 additions & 2 deletions readme.md
    View file
    Original file line number Diff line number Diff line change
    @@ -8,8 +8,8 @@ You can always view the [manual](http://www.lexaloffle.com/pico-8.php?page=manua

    * anything written in uppercase the PICO-8 editor or .p8 is made lowercase by the editor. → _editing the .p8 file directly can work__
    * multi line comments don't work correctly. → _use single lines to get around this_
    * `print(function() end)` segfaults → _(wrapping it in a `tostring()` will fix it)_
    * `print` takes three arguments (string,x,y)
    * `print(function() end)` segfaults → _wrapping it in a `tostring()` will fix it_
    * `print` takes three arguments (string,x,y) → _use `printh()` instead_
    * PICO-8's Lua supports a few [Compound assignment operators](https://en.wikipedia.org/wiki/Operators_in_C_and_C%2B%2B#Compound_assignment_operators): `+=`,`-=`,`*=`,`/=`,`%=`
    * PICO-8's Lua has single line shorthand for if then else operators. → _Compare to ternary?: PICO-8 Lua: `IF (NOT B) THEN I=1 J=2 END` vs Lua: `i,j = not b and 1,j or i,2`._
    * PICO-8's Lua has a different precision (16:16 fixed point) vs Lua's double-precision floating-point.
  28. josefnpat revised this gist Oct 15, 2015. 1 changed file with 9 additions and 9 deletions.
    18 changes: 9 additions & 9 deletions readme.md
    View file
    Original file line number Diff line number Diff line change
    @@ -8,7 +8,7 @@ You can always view the [manual](http://www.lexaloffle.com/pico-8.php?page=manua

    * anything written in uppercase the PICO-8 editor or .p8 is made lowercase by the editor. → _editing the .p8 file directly can work__
    * multi line comments don't work correctly. → _use single lines to get around this_
    * `print(function() end)` segfaults → _(wrapping it in a `tostring` will fix it)_
    * `print(function() end)` segfaults → _(wrapping it in a `tostring()` will fix it)_
    * `print` takes three arguments (string,x,y)
    * PICO-8's Lua supports a few [Compound assignment operators](https://en.wikipedia.org/wiki/Operators_in_C_and_C%2B%2B#Compound_assignment_operators): `+=`,`-=`,`*=`,`/=`,`%=`
    * PICO-8's Lua has single line shorthand for if then else operators. → _Compare to ternary?: PICO-8 Lua: `IF (NOT B) THEN I=1 J=2 END` vs Lua: `i,j = not b and 1,j or i,2`._
    @@ -47,8 +47,8 @@ You can always view the [manual](http://www.lexaloffle.com/pico-8.php?page=manua

    ## Lua's Math Library

    * `math.a[cos|sin|tan][2]` does not work correctly. [Rounding errors?] → _use `atan2` instead of `math.atan2`_
    * `math.[floor|ceil]` returns input [incorrect value] → _use `flr` instead_
    * `math.a[cos|sin|tan][2]` does not work correctly. [Rounding errors?] → _use `atan2()` instead of `math.atan2()`_
    * `math.[floor|ceil]` returns input [incorrect value] → _use `flr()` instead_
    * `math.[cos|sin]` return zero [incorrect value] → _use `cos()` and `sin()`. Functions take 0..1 instead of 0..PI*2, and `sin()` is inverted._
    * `math.tan` does not work correctly. [Rounding errors?]
    * `math.[cos|sin|tan]h` does not work correctly. [Rounding errors?]
    @@ -57,10 +57,10 @@ You can always view the [manual](http://www.lexaloffle.com/pico-8.php?page=manua
    * `math.log10` is nil [does not exist]
    * `math.pow` does not work correctly [returns -maxint] → _use the `^` operator instead_
    * `math.modf` returns two zeros [incorrect value] → _use the `%` operator instead_
    * `math.sqrt` does not work correctly [Rounding errors?] → _use `sqrt` instead_
    * `math.random` does not work correctly [returns zero] → _use `rnd` instead_
    * `math.randomseed` cannot be verified until math.random is fixed [dependency issue] → _use `srand` instead_
    * `math.frexp` does not return a value [incorrect return type] _but `math.ldexp` works for some reason!_
    * `math.sqrt` does not work correctly [Rounding errors?] → _use `sqrt()` instead_
    * `math.random` does not work correctly [returns zero] → _use `rnd()` instead_
    * `math.randomseed` cannot be verified until math.random is fixed [dependency issue] → _use `srand()` instead_
    * `math.frexp` does not return a value [incorrect return type] _but `math.ldexp()` works for some reason!_
    * `math.huge` is 0.5 [incorrect value and type]
    * `math.pi` is 5.341e-05 [incorrect value]

    @@ -69,9 +69,9 @@ You can always view the [manual](http://www.lexaloffle.com/pico-8.php?page=manua
    * `os.date` works correctly, but due to a lack of upper case characters, it does not render correctly.
    * `os.time` returns the incorrect value [rounding issues]
    * `os.getenv` works correctly, but the editor cannot write upper case characters.
    * `os.difftime` does not work correctly, but I think that this could be used to get `os.time` to work correctly.
    * `os.difftime` does not work correctly, but I think that this could be used to get `os.time()` to work correctly.
    * `os.re[name|move]` this probably works, but operates where the binary for `pico8` is located.
    * `os.clock` doesn't work correctly, but could probably be scaled to the correct value. → _pico8 is forced at 30fps; calculate time by incrementing a variable in `_update` by 1/30._
    * `os.clock` doesn't work correctly, but could probably be scaled to the correct value. → _pico8 is forced at 30fps; calculate time by incrementing a variable in `_update()` by 1/30._

    ## Debug Library

  29. josefnpat revised this gist Oct 15, 2015. 1 changed file with 1 addition and 1 deletion.
    2 changes: 1 addition & 1 deletion readme.md
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    Original file line number Diff line number Diff line change
    @@ -71,7 +71,7 @@ You can always view the [manual](http://www.lexaloffle.com/pico-8.php?page=manua
    * `os.getenv` works correctly, but the editor cannot write upper case characters.
    * `os.difftime` does not work correctly, but I think that this could be used to get `os.time` to work correctly.
    * `os.re[name|move]` this probably works, but operates where the binary for `pico8` is located.
    * `os.clock` doesn't work correctly, but could probably be scaled to the correct value. → _pico8 is forced at 30fps; calculate time by updating a time in `_update`_
    * `os.clock` doesn't work correctly, but could probably be scaled to the correct value. → _pico8 is forced at 30fps; calculate time by incrementing a variable in `_update` by 1/30._

    ## Debug Library

  30. josefnpat revised this gist Oct 15, 2015. 1 changed file with 18 additions and 18 deletions.
    36 changes: 18 additions & 18 deletions readme.md
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    Original file line number Diff line number Diff line change
    @@ -6,17 +6,17 @@ You can always view the [manual](http://www.lexaloffle.com/pico-8.php?page=manua

    ## General

    * anything written in uppercase the PICO-8 editor or .p8 is made lowercase by the editor. _editing the .p8 file directly can work__
    * multi line comments don't work correctly. _use single lines to get around this_
    * `print(function() end)` segfaults _(wrapping it in a `tostring` will fix it)_
    * anything written in uppercase the PICO-8 editor or .p8 is made lowercase by the editor. → _editing the .p8 file directly can work__
    * multi line comments don't work correctly. → _use single lines to get around this_
    * `print(function() end)` segfaults → _(wrapping it in a `tostring` will fix it)_
    * `print` takes three arguments (string,x,y)
    * PICO-8's Lua supports a few [Compound assignment operators](https://en.wikipedia.org/wiki/Operators_in_C_and_C%2B%2B#Compound_assignment_operators): `+=`,`-=`,`*=`,`/=`,`%=`
    * PICO-8's Lua has single line shorthand for if then else operators. _Compare to ternary?: PICO-8 Lua: `IF (NOT B) THEN I=1 J=2 END` vs Lua: `i,j = not b and 1,j or i,2`._
    * PICO-8's Lua has single line shorthand for if then else operators. → _Compare to ternary?: PICO-8 Lua: `IF (NOT B) THEN I=1 J=2 END` vs Lua: `i,j = not b and 1,j or i,2`._
    * PICO-8's Lua has a different precision (16:16 fixed point) vs Lua's double-precision floating-point.
    * PICO-8's Lua has additional Comparison operators/relational operators for "Not Equal To" (`~=`): `!=`
    * `ipairs` does not have the proper indexing and will loop over the first element infinitely . _use `pairs` instead_
    * There is no `io` object. _There is technically "Cartride Data" that you can use for persistant information_
    * `_VERSION` exists, but can't be accessed via the editor. _It returns `Lua 5.2`._
    * `ipairs` does not have the proper indexing and will loop over the first element infinitely . → _use `pairs` instead_
    * There is no `io` object. → _There is technically "Cartride Data" that you can use for persistant information_
    * `_VERSION` exists, but can't be accessed via the editor. → _It returns `Lua 5.2`._
    * `load` has been overwritten with a PICO-8 function.
    * PICO-8 introduces many other global functions (see [manual](http://www.lexaloffle.com/pico-8.php?page=manual)).
    * `rawlen` returns small fractions [incorrect value]
    @@ -36,30 +36,30 @@ You can always view the [manual](http://www.lexaloffle.com/pico-8.php?page=manua
    * `string.find` returns small fractions [invalid indexes]
    * `string.gmatch` does not return a working iterator [broken iterator index]
    * `string.gsub` does not return the correct index [incorrect second value]
    * `string.len` returns a rather small fraction [incorrect value] _use the `#` operator instead_
    * `string.len` returns a rather small fraction [incorrect value] → _use the `#` operator instead_
    * `string.[upper|lower]` while both of these functions technically work correctly, because the char table has had the upper case characters removed, it will not work as intended.

    ## Lua's Table Library

    * `table.insert(t,o)` does not insert the proper key. _use `add(t,o)` instead_
    * `table.insert(t,o)` does not insert the proper key. → _use `add(t,o)` instead_
    * `table.insert(t,p,o)` does not insert the proper key. Attempting to insert beyond table initialization causes an position out of bounds error.
    * `table.remove(t,p)` removes the correct value, but then assocates every following value with the key before it. _use `del(t,o)` instead_
    * `table.remove(t,p)` removes the correct value, but then assocates every following value with the key before it. → _use `del(t,o)` instead_

    ## Lua's Math Library

    * `math.acos[2]` does not work correctly. [Rounding errors?]
    * `math.[floor|ceil]` returns input [incorrect value] _use `flr` instead_
    * `math.a[cos|sin|tan][2]` does not work correctly. [Rounding errors?] → _use `atan2` instead of `math.atan2`_
    * `math.[floor|ceil]` returns input [incorrect value] → _use `flr` instead_
    * `math.[cos|sin]` return zero [incorrect value] → _use `cos()` and `sin()`. Functions take 0..1 instead of 0..PI*2, and `sin()` is inverted._
    * `math.tan` does not work correctly. [Rounding errors?]
    * `math.[cos|sin|tan]h` does not work correctly. [Rounding errors?]
    * `math.[deg|rad]` return zero [incorrect value]
    * `math.[exp|log]` does not work correctly [Rounding errors?]
    * `math.log10` is nil [does not exist]
    * `math.pow` does not work correctly [returns -maxint]
    * `math.modf` returns two zeros [incorrect value]
    * `math.sqrt` does not work correctly [Rounding errors?]
    * `math.random` does not work correctly [returns zero]
    * `math.randomseed` cannot be verified until math.random is fixed [dependency issue]
    * `math.pow` does not work correctly [returns -maxint] → _use the `^` operator instead_
    * `math.modf` returns two zeros [incorrect value] → _use the `%` operator instead_
    * `math.sqrt` does not work correctly [Rounding errors?] → _use `sqrt` instead_
    * `math.random` does not work correctly [returns zero] → _use `rnd` instead_
    * `math.randomseed` cannot be verified until math.random is fixed [dependency issue] → _use `srand` instead_
    * `math.frexp` does not return a value [incorrect return type] _but `math.ldexp` works for some reason!_
    * `math.huge` is 0.5 [incorrect value and type]
    * `math.pi` is 5.341e-05 [incorrect value]
    @@ -71,7 +71,7 @@ You can always view the [manual](http://www.lexaloffle.com/pico-8.php?page=manua
    * `os.getenv` works correctly, but the editor cannot write upper case characters.
    * `os.difftime` does not work correctly, but I think that this could be used to get `os.time` to work correctly.
    * `os.re[name|move]` this probably works, but operates where the binary for `pico8` is located.
    * `os.clock` doesn't work correctly, but could probably be scaled to the correct value.
    * `os.clock` doesn't work correctly, but could probably be scaled to the correct value. → _pico8 is forced at 30fps; calculate time by updating a time in `_update`_

    ## Debug Library