poom_0

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poom_0

by freds72

Cart #poom_0-9 | 2022-01-03 | Code ▽ | Embed ▽ | License: CC4-BY-NC-SA

530

BBS Edition to celebrate year 1 of POOM release!
(limited to 1 level - sorry!)

Enjoy full game at: https://freds72.itch.io/poom

Controls

Alternate scheme (select from controls menu):

Devlog

Game is "multi-cart", using 0x8000 region filled with raw data from 2 carts (poom_0+poom_1).

Engine details: https://freds72.itch.io/poom/devlog/241700/journey-to-poom

Credits

Art+Design+Music: @paranoidcactus
Code: @freds72

Changes

• added: Jelpi Spotter credit :)

See repro cart - unless I am totally wrong on my software tline, pico8 tline ("hw tline") is not correctly rendering lines with arbitrary slopes.

Software version eventually converge toward correct pattern, tline does not.

rikegukawu

by freds72

Cart #rikegukawu-0 | 2021-06-20 | Code ▽ | Embed ▽ | No License

5

stat(31) fails to report any key mapped to an accentuated character (ex: on AZERTY keyboard, 2 is mapped to key "é").
It prevents support for diverse keyboard layouts.

Suggest to have a raw keyboard stat value to report key number.

goyonusuha

by freds72

Cart #goyonusuha-0 | 2021-04-09 | Code ▽ | Embed ▽ | No License

4

How to reproduce:

• register custom menu entry
• run game with an endless while/flip loop

bug: menu item code is never triggered

gijenijato

by freds72

Cart #gijenijato-0 | 2021-01-01 | Code ▽ | Embed ▽ | No License

3

It is not possible to present actual keys being used by pico in game.
Pico8 keyconfig can be used to remap keys.

Proposal:

keyconfig id [player]
returns the character being used for button id and player (default 0)

How to reproduce:

• launch cart
• set custom screen palette:

pal({140,1,139,3,4,132,133,7,6,134,5,8,2,9,10},1)

• load data:

reload(0,0,0x4300,"cart2.p8")

• while data gets processed, hit "pause"
• bug: screen palette gets reset

Can be reproduced on POOM on the loading screen (https://freds72.itch.io/poom)

Using -export command to automate multi cart package building and blocked by a number of bugs:

• unable to specify HTML plate path (only works if export is actually performed from home folder)
• inconsistent path parameters between bin and html exports:

# works for html
pico8.exe carts\cart_0.p8 -home . -export "game_alpha.html -p my_plate cart_1.p8 cart_2.p8"
# doesn't work for bin
pico8.exe carts\cart_0.p8 -home . -export "game_alpha.bin cart_1.p8 cart_2.p8"
# works for bin
cd carts
pico8.exe cart_0.p8 -export "game_alpha.bin cart_1.p8 cart_2.p8"

• incomplete js generated unless export is run from carts folder

# produces broken js
pico8.exe carts\cart_0.p8 -home . -export "game_alpha.html -p my_plate cart_1.p8 cart_2.p8"

Thick line drawing routine (as a reply to @JadeLombax Twitter).

rabogemeri

by freds72

Cart #rabogemeri-0 | 2020-07-29 | Code ▽ | Embed ▽ | No License

11

Manual:

linefill x0 y0 x1 y1 r [col]
draw a 2*r pixel wide line
note: r must be >= 0.5 to produce meaningful results
note: the code uses sub-pixel precision rasterization, allowing smooth movement

Example:

-- 4 pixel wide white line
linefill(45,34,67,96,2,7)

introduced in 0.2.0d
how to reproduce:

• call tline with a start point outside of screen boundaries
• tline starts at 0 without adjusting lookup coordinates

repro cart:

kuwirapima

by freds72

Cart #kuwirapima-0 | 2020-04-24 | Code ▽ | Embed ▽ | No License

18

How to reproduce:

• switch to spritesheet
• select pen tool
• draw
• middle-mouse click to pan
• draw does nothing outside the initial zone

How to reproduce:

-- outputs zero
local b=band(nil,4)
-- throws error (arithmetic on field ?)
local b=nil<<4

How to reproduce:

• cart with 3 includes

#include includes/bold.lua
#include includes/bigscore.lua
...
some other code
...
#include includes/tquad.lua

• reports invalid 'printb' not found (included in bold.lua)
• info produces random output:

• ctrl-r clears the error and runs the cart ok

how to reproduce:

for i=1,n do
  i<<5
end

Output:

or

Repro cart:

towakowibo

by freds72

Cart #towakowibo-0 | 2020-04-17 | Code ▽ | Embed ▽ | No License

1

Multicart is really a nice expansion feature, to offer content beyond the 32K boundary.
However, with reload not supporting BBS-hosted carts, large games are banned from BBS.

Is that something considered in the pico roadmap to bring back multicart games to the "official" forums?

Note that supporting more than a couple of data carts will require rework of the BBS file management.

• support for upload many files at once
• support for listing cart identifiers
• support for headless export of p8.png (limited to html/bin at time of writing)
• ability to assign same id pattern to many carts (ex: vracing_0... vracing_10)

Cheers

As per documentation, reload does not support BBS carts.
However, the function fails without any error while trying:

-- does nothing (or not??)
reload(0,0,0x4300,"#vracing_5")

Could the function reports an error in such case?

On Chrome: Version 79.0.3945.88 (64 bits)
How to reproduce:

• navigate to any game
• click on "code" dropdown
• page becomes unresponsive (cannot be selected, game cannot be launched...)

Not reproduced on Edge (and apparently on Firefox - cannot test)

freds72_snow

by freds72

Cart #freds72_snow-3 | 2019-12-08 | Code ▽ | Embed ▽ | License: CC4-BY-NC-SA

159

Winter is coming (as every year actually...), time for some skiing!
Enjoy going down the slope, trying to beat your previous track record or freeriding skills!

Grab coins for some extra time bonus - watch out for off track hazards!
Your polar jacket can sustain a couple of direct hits, avoid trees anyway...

Note: there is no end racing line - you will loose :] question is how much time will you last?

Controls

• Left/Right: control direction
• c: jump (hold to charge)
• x: restart (if stuck)
• follow GPS pointer if lost

[ Continue Reading.. ]

ellipsefill

by freds72

Cart #ellipsefill-0 | 2019-08-20 | Code ▽ | Embed ▽ | License: CC4-BY-NC-SA

21

A little experiment with filled ellipse, supporting any rotation angle (the tricky part!).
The code is moderately fast as it finds the root of the ellipse equation to get the segment extent for each row.

Car headlight example use:

@zep
A couple of devs are investing into multicart games (like 5 or more data carts).
We are all put back by the artificial loading times (eg minutes)

Would it be possible for the fat client to either ignore load time throttling, or only activat throttling for the published version?
I want the multicart multiverse, not loading screens ;)

Using the cough undocumented cough stat(102) from a game hosted on itch.io, I got back:

v6p9d9t4.ssl.hwcdn.net

This is indeed the url of the iframe (which doesn't help).
A more correct behavior would be to report the parent page url, with the benefits of:

• having a predictable outcome
• actually preventing rogue hosting (somehow...)

Note: Looking at the HTML, I see that url is retrieved from:

var str = window.location.hostname;

Using that alternate code would fix the bug:

var str = (parent !== window) ? document.referrer : document.location;