I was trying to compute the outer product of a column vector x with itself, like so:
xxt=x:matmul(x:transpose()) |
The resulting matrix had the right shape, but the only nonzero entries were on the diagonal. If I explicitly create a row vector and copy, then I get the correct result.
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A Tiny Intro, made at my first demo party, NOVA (UK). :-)
256b ROM and more info here:
https://github.com/ace-dent/demo-toybox/tree/main/NOVA2024
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Slots-O-Stickers
Made a lil slot machine / sticker collecting game :)
This was a Christmas gift for my partner but I figure you all might enjoy it was well <3
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[8x8] |
6 comments
On all threads containing an embedded cart, I am unable to see the Code by clicking Code and I see a horizontal scrolling bar (that does nothing) instead.
I can still download the .p8.png fortunately (and that's required to also get data/resources anyway) but sometimes I just want to have a peek at some algo before deciding to dive deeper or not.
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(This is slower after 0.1.0h but still fairly quick overall - maybe I'll update these numbers eventually.)
Here's some fairly fast FFT code for Picotron. It abuses the fact that matmul() is extremely cheap right now, and also decomposes shuffles into either matrix transposes or large-stride vector shuffles - so even if matmul() gets more expensive this should remain fairly efficient. A 256-point complex FFT currently takes about 1.4% CPU at 60fps.
Hit Z or X to switch to the visualizer mode, which demonstrates feeding tracker output into the FFT to get frequency visualization. You could try taking the FFT code to use this with your own music!
This works on complex signals only at the moment, but since it's quite fast and accepts separate real and imaginary vectors as inputs, using it for real signals shouldn't be too bad - just provide a zero imaginary part and ignore the upper half of the returned frequencies.
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Just wanted to share my second PICO-8 game. I've been chipping away at this slowly for the last few months and was inspired this week to finally finish it!
Play against a friend via pass-and-play or challenge the computer. For fun, you can even pit two computer players against each another. Use it as the world's slowest coin-tossing machine! :)
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Loom 1.2
A Laser-packed game, how long can you survive?
This game was made in two days. If anyone wants to make some good music then please do so, thanks.
You can pause to go to clean mode or enable quick death. Also you can reset your highscore.
My best is 65 seconds. I just updated the game, is it better with the more askew lasers?
Stages
Stages will be added to the game the more score you get. if you are at the very beginning, its easy.
But the longer you survive, the more things will be added to the game to make it harder.
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Just lasers
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Aim Lasers
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Super Lasers & even more Aim Lasers
- Cluster drop-Lasers & even even more Aim Lasers
16 comments
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TenSum
When Tweetjam happened I got addicted to MakeTen by @pancelor. A simple concept, perfectly executed in 500 chars. But the eyestrain from Pico8's HD resolution was just too much, which is why I started making my own version in Picotron.
How To Play
You control the whole game with your mouse.
The goal of the game is to connect fields that add up to 10. The bigger the area you cover the more points you get.
Afterthoughts
Pancelor is working on an update for MakeTen, packed full of new,crazy gamemodes and hours of fun. You can play this while you wait for that version.
This is my second game for Picotron, and I really hope our little community will continue to grow. Do let know your highscores, do let me know what you think.
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Hiya! I've been working on this little puzzle game for a few months and its finally done!
Thanks to @Trog for the lovely font, and everyone who playtested and/or gave feedback.
Good luck and I hope you enjoy! 🐛
37 comments
Version 0.9: monster graphics!
features
- Mons in save data
- Image decompression system added
- based off the system used in the gen 1 and 2 pokemon games with some changes to better fit pico-8
- Display mons in battle mode
- mon info menu system
- view mons
- view stats, moves, info
- change mon placement
- mons appear on start menu
- i thought it would be a fun way to show off all the cool monsters that are in the game so far
- you cant catch all of the ones shown
- cleanup and token saving measures
story time
Hello! this update came out really fast as far as this major feature being added. this is because i had been working on this part in a separate project as i was making the rest of the engine. It loads an image compressed into a string. there are some improvements i wouldve wanted to make but it didnt seem worth the token cost. anyways it works now. this was a major feature that i had to have in the game for it to be worth the challenge.
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So I'm trying to use two sprite sheets per frame in my game using the new high memory video mapping. at the start of the game the video memory is moved to 0x8000. there are special sprites that are loaded from a string into 0xa0. What im trying to do is quickly switch to 0xa0, load/draw the compressed sprite, then switch back to the 0x80 sprite sheet. for some reason loading the sprite into 0xa0 overwrites sprites at the same position in 0x80, which is my main issue here. if anyone has advice or help id appreciate, i understand its a new feature so its not as well documented just yet.
copying sprites from video memory to 0x8000 (this is done in _init):
memcpy(0x8000,0x0,0x2000) poke(0x5f54,0x80) poke(0x5f5c,255) |
loading sprite data from string into 0xa000 (this is called sometimes during _update within a decoding function):
poke(0x5f54,0xa0) --load 0xa000 memory --buncha stuff that loads decompressed sprite for i=0,4096do sset(slot*64+i%64,64+i\64,0) [ [size=16][color=#ffaabb] [ Continue Reading.. ] [/color][/size] ](/bbs/?pid=149955#p) |
5 comments
Splode 'Em Up
Destroy rascally missiles n' bombs with incredibly powerful countermeasures: balloons! Balloons 'splode enemies on impact, but not only that, each different color balloon has a unique special ability.
Explosition
You play Recty, a sentient rectangle with an incredible ability to spawn balloons ad infinitum. Recty hates missiles n' bombs and likes to 'splode as many as possible all the time. It's literally all he ever does.
Gameplay
- Move Recty (the rectangle at the bottom of the screen) left and right.
- Release balloons to try and hit the missiles n' bombs. You can only have one balloon out at a time.
- While you have a balloon, you can pivot it left or right, or even have it float up more quickly.
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Finit
A simplistic game about lines and green fluid.
If anyone wants to make a soundtrack, fell free to post it in the comments.
I made this game in a week or so.
Controls:
- mouse to click and rotate the lines
- Space to confirm the build
- If The fluid doesn't get everywhere, and you don't finish the level, click anywhere with the mouse to try again.
Goal:
- All white should be green, so that doesn't always mean everything has to be connected.
Have fun :)
4 comments
