Simple Timers Service

by professir

Cart #simple_timer_service-6 | 2021-11-19 | Code ▽ | Embed ▽ | License: CC4-BY-NC-SA

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Simple Timers Service

Here is a Simple Timers Service that can manage multiple timed events -- feel free to use it in your games :D

How to use

This service is a Singleton and can be referenced with the variable "timer".

The service exposes 2 methods:

• timer:start( _frames , _callback )
  • Simply start any number of timers, wherever you want in your code
  • _frames: the number of frames to count down before executing the callback function
  • _callback: the function to execute after the number of frames has elapsed
  • Example: "timer:start(600,my_function)" -- this will execute "my_function()" after 600 frames have elapsed

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snäkätor - a demo released at Assembly Creative Tech 2021. Placed 2nd in the combined Wild / Short film compo.

Uses the tiniest trifill function by p01 from the Trifill Thunderdome, plus picotool for minification.

Seems to run quite well in browser with v0.2.3.

snakator

by rawArgon

Cart #snakator-0 | 2021-11-10 | Code ▽ | Embed ▽ | License: CC4-BY-NC-SA

188

Well anyway, here's a video capture, too:

scientistwd_breakoutsky

by ScientistWD

Cart #scientistwd_breakoutsky-0 | 2021-11-10 | Code ▽ | Embed ▽ | License: CC4-BY-NC-SA

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Breakout Sky

A little something I made up from the LazyDevs tutorial. I wanted to try my hand at PICO-8, and I really had a lot of fun! Your job is to break up the clouds to reveal the sun again.

Control

Use "LEFT" and "RIGHT" to move, of course. Press "X" to kick, but be sure to do it with good timing! In addition, if you collect enough Stardust, you can hold down "O" to unleash a surprise!
Some blocks react differently if you kick the ball into them. Pay close attention!

Modes

STORY MODE is a set of thirteen levels. You get 9 lives to complete them, so good luck! It's the best mode to help you learn the game, too; I recommend beating it first.

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How does the sin() function work in pico-8?
I've tried experimenting with it, but it doesn't seem to work the way I want it to.

cls()
print(sin(90)) -- returns 0

I really don't understand, why doesn't it return 1?

1: Direct print of stat(31) breaks printing

2: Using _update60 causes stat(30) to break/desync sometimes

3: Calling stat(31) breaks later stat(30)/stat(31) calls

With _update60:

A little experiment to create a swarm of rats.

Press Z to add rats. Press X to pop rats.
Press arrows to move cheese.

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rats748392402

by crablion

Cart #rats748392402-0 | 2021-11-08 | Code ▽ | Embed ▽ | License: CC4-BY-NC-SA

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In an effort to easily contain 64-different characters for use in a compression table, I am seeing that if I use PRINTH() to @CLIP - that it is forcing the clipped data to be uppercase only in Pico-8.

a=""
for i=33,98 do
  c=i
  if (c!=34 and c!=92) a=a..chr(c)
end
printh(a,"@clip")

The results saved to the clipboard are:

!#$%&'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[]^_`ab

yet when pasted in Pico-8, you get:

!#$%&'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[]^_`AB

Where the last 2-characters are converted to uppercase.

So pasting with CTRL-V in Pico-8 apparently converts the entire clip to uppercase.

I would like to recommend that if you copy something to the clipboard from Pico-8, you have the option of it pasting it entirely as it is supposed to be.

printh(a,"@iclip")

"i" for ignore case for instance.

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PLORBO: Critter Getter

by professir

Cart #plorbo-3 | 2021-11-22 | Code ▽ | Embed ▽ | License: CC4-BY-NC-SA

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An alien abduction game with procedurally generated planets

ATTENTION, PLORBO! We require new critters from across the Universe for our intergalactic zoo, the Pride of Plorbia. You must venture to new, unexplored worlds to find specific critters that we beam to your Mothership and return them to us.

Controls

When controlling green ship:

• ARROW KEYS: move
• Z: boost
• X: abduct

When docked to Mothership:

• DOWN: undock

When out of energy:

• LEFT / RIGHT: control Mothership for a rescue

Any time:

• Press ENTER to VIEW THE ZOO or MUTE THE MUSIC

​In the zoo:

• Left/right to scroll
• Hold Z + left/right to scroll quickly
• X to exit zoo

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Hey! I've been wanting to get into PICO-8, but I don't remember making an account with this email. Is there any way I can change my username? Thanks for any help.

Paddle Boat

by mhughson

Cart #abbyboat-0 | 2021-11-07 | Code ▽ | Embed ▽ | License: CC4-BY-NC-SA

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Made a new game with my daughter.

Pilot a Paddle Boat to the finish line.

Z - Left Paddle
X - Right Paddle

redlightgreenlight

by IkCreator3

Cart #ganewozihe-0 | 2021-11-07 | Code ▽ | Embed ▽ | License: CC4-BY-NC-SA

6

Controls

Right arrow to move.

Behind The Scenes

My 2nd game in pico8!

I was only able to find a few examples of rotating sprites using tlines on the forums. While the code worked, I couldn't really make sense of all the variables and magic numbers.

After spending quite a lot of time reading, debugging, and sketching hundreds of triangle, I think I have a decent understanding of the math and how it works. SOH-CAH-TOA haunts my dreams.
At some point, I'd like to make a more detailed post, but for now, I've written a tile rotating function with a lot of comments.

Hopefully it explains the math and the concept well enough that you can modify the code to suit your projects.
This code is intentionally not optimized or minified.

tline_rotation_tutorial

by kallanreed

Cart #tline_rotation_tutorial-1 | 2021-11-07 | Code ▽ | Embed ▽ | License: CC4-BY-NC-SA

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