2 player chess. Arrows to move, button 1 to select a piece and confirm a move, button 2 to deselect.
En passant, castling, and pawn promotion don't work. Because they're complicated. I'm going to try and make an improved version soon which will have these rules working properly. This is why it's v0.95.
If you're going to look at the code, be warned: here be dragons. Its messy. Also white and black are swapped in the code from what they actually are in the game. Don't ask.
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The new export option is amazing, so I started messing with three.js (a webgl library) to use it with Pico 8.
And it works, so I made a simple proof of concept by drawing the pico 8 output in a sort of cathodic display style. The next step will be to import a 3D model of a computer screen or maybe an arcade cabin. So we can finaly see this great fantasy console.
Feel free to use the source code and mess with it. You can change your game just by replacing the game .js by the one exported from Pico 8.
Here is the page
Here is the source code
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Whenever I start up a game using the new web player, it says "future-version: 5", then after some time passes, I get "timeout :(". I figure I need to update the web player by clearing my cache, no biggie.
The new player gets to "loading cartridge..." then the web page crashes! (In Google Chrome, this is "Aw, snap!")
Offline carts still work, thank god.
Zep, don't sweat. Every game/program's pre-release stage is rocky.
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This is a function that will generate cart's guid (used for cartdata function) based on things specific to the cartridge (mapdata, gfx, sfx and code).
function getcartguid() reload(0x4300,0x4300,7168) alphabet = "1234567890abcdefghijklmnopqrstuvwxyz_1234567890abcdefghijklmnopqrstuvwxyz_1234567890abcdefghijklmnopqrstuvwxyz_1234567890abcdefghijklmnopqrstuvwxyz_1234567890abcdefghijklmnopqrstuvwxyz_1234567890abcdefghijklmnopqrstuvwxyz_1234567890abcdefghijklmnopqrstuvwx" guid = "" for i=0,15 do num = peek (0x0+i) guid = guid .. sub(alphabet,num+1,num+1) end for i=0,15 do num = peek (0x2000+i) guid = guid .. sub(alphabet,num+1,num+1) end for i=0,15 do num = peek (0x3200+i) guid = guid .. sub(alphabet,num+1,num+1) end for i=0,15 do num = peek (0x43af+i) guid = guid .. sub(alphabet,num+1,num+1) end --print (#guid) --print (guid) return guid end |
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E.g. for storing text (hiscore name, anyone?). Since each number is 4 bytes long, to make standard "Top10" list you'd use only 40 bytes (results only). Which leaves 216 bytes free, that could be used for names, each 21 letters long (well, 21.6 actually, but we can't have 0.6 of character, now can we?). I know we can peek/poke into save data (although it seems memory map haven't been updated in manual), but I'm not sure if it would save.
8 comments
As of version 1.2, PICO-8 includes a command useful for debugging: printh("string") This command prints a string to the host operating system's console. You can put printh() calls in your code to examine events or state without cluttering the game screen with debugging information.
So how do you see the host operating system's console?
In Linux, you probably already run the "pico8" command from a terminal window. If you don't, locate where you put the "pico-8" directory, then run the pico8 command from a terminal window using its full path. For example:
~/pico-8/pico8 |
In Mac OS X, instead of double-clicking the PICO-8 icon, open Terminal, then start PICO-8 with the following command, adjusting the path to match where you put the app. For example:
/Applications/PICO-8.app/Contents/MacOS/pico8 |
In Windows, instead of double-clicking the PICO-8 icon, open Command Prompt, then start PICO-8 with the following command:
"\Program Files (x86)\PICO-8\pico8.exe" |
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.png)
Hey guys!
I was messing around with Pico and I've discovered a total of 6 new screen modes!! Please check
the GIF attached to see them in action. Some of them are sort of screen effects (mirror) but the others include
2x1 aspect ratio, 64 x 64 pixels and so on. I am so excited about this. I think this could change the look and feel of many games and makes Pico feel like the Amstrad CPC, C64 or other retro computers. I hope this is a feature and not a bug :)
I will post a cartridge soon.
16 comments
Any chance we could get a Raspian build of PICO-8? I'd love to put PICO-8 on my sons little rip' machine with its new touchscreen - it'd be ideal for him to do some programming with!
So any chance we could get a Raspian binary folks?
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5 October 2015
- You're now a bit smarter and can cancel jumps! (press down or the action button other than the one you started the jump with)
- That extra brain power comes with added brain mass and now lily pads can sink! (6 seconds per pad, 13 on the first pad)
- You can now perform small hops and land on the same lily pad you're on
- Shortened delays in the game over -> title sequence
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I made this program for a contest on CodeWalrus
The contest rules were to make something fun in <= 140 chars or tokens.
Controls
up+down: change bar size
left+right: change speed
9 comments
Is there any way to save data from the Pico-8? I'd like to have persistent high scores in my game, but the Lua file io doesn't seem to work (either that or I'm doing something wrong).
Has anyone done this or have an example of how to do this, or is it just not possible?
4 comments
Could someone make 2d physics engine for pico, something like box2d or chipmunk (though probably w/out rotation as pico doesn't allow for them)?
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Since PICO-8's sin(), cos() and atan2() are not the standard functions, how to implement them in another language? Some pseudocode would be ok, I'm aiming javascript by the way.
I looked into PicoLove's code as an example, but the results are different. For example in PICO-8:
print(sin(0)) -- 0 print(sin(0.5)) -- 0 print(sin(0.25)) -- -1 print(sin(-3)) -- 0 print(sin(-0.45)) -- 0.309 print(sin(78.4)) -- 0.5877 |
The PicoLove code remaps sin() to:
sin = function(x) return math.sin(-(x or 0)*(math.pi*2)) end |
that in javascript is:
window.sinp8 = function (x) { return Math.sin(-(x || 0) * (Math.PI * 2)); };
|
Now, the results are very different:
console.log(sinp8(0)); // -0
console.log(sinp8(0.5)); // -1.2246467991473532e-16
console.log(sinp8(0.25)); // -1
console.log(sinp8(-3)); // -7.347880794884119e-16
console.log(sinp8(-0.45)); // 0.3090169943749475
console.log(sinp8(78.4)); // 0.5877852522924427
|
5 comments
Enjoying Pico-8, but why does it only have a 30 fps frame rate? This is lower than the C64/Amiga/consoles.... The difference is quite big when moving stuff fast across the screen.
12 comments
Can anybody explain to me the difference between "change color at draw time" and "change color at display time"? If I, for example, set red to green and than I draw a sprite, its reds are drawn as greens. If I set it to change at display time, the effect is the same. What's the difference between the two modes?
Thanks
2 comments
Just a screensaver I came up with on the train. Based on a mathematical sieve that leaves square numbers unchanged.
If you run it long enough you'll catch a glimpse of the square numbers.
1 comment
Whenever you find a game that you like, but it's incomplete, what's an action you can take?
Refresh the Page.
Suddenly, you see it: The game has been refreshed.
"Refreshed" is sort of a modding series, where I take incomplete games and try to tidy them up.
Any game that I fix up will still retain the author's name, but I will add my own as well.
This enhanced version will also be posted in the original game's topic.
At the time of writing, I've got one in the works.
SPOILER ALERT:
10 comments
Hi,
I wrote a perl script to convert a cartridge spritesheet to png and back. This way, you can edit your sprites in your favorite software and update the cartridge when done.
2 comments
... would make the internal code editor much more usable!
Could be done by clicking the function keyword (toggle) for example.
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