jahndis [Lexaloffle Blog Feed]

Road Runner

Sat, 04 Nov 2023 00:20:00 UTC

Road Runner

by jahndis

[Click to Play]

Training the PJ Masks

Mon, 30 Oct 2023 00:36:57 UTC

Training the PJ Masks

by jahndis

[Click to Play]

Training the PJ Masks

Choose your hero and villain and battle until you beat the villain!

But uh oh! The villain can beat you too!

Have fun and enjoy the game!

Ice Breakers

Mon, 19 Jun 2023 05:33:27 UTC

Ice Breakers

by jahndis

[Click to Play]

Ice Breakers

Balance power and precision as you strategically whack ice all while keeping the little skater's head above water!

Play locally against friends or CPU players in single or multi-elimination matches!

In Game Controls:

Use the arrow keys to move your hammer
Use Z to hit your hammer

Your hammer's power will oscillate between a tiny precise tap, and a chaotically random whack! Surrounding ice will experience more disruption with several weaker hits, while a single powerful strike will leave adjacent ice less disturbed as you smash your target block. Just be careful you hit the right one! Find the right balance of precision and power as you strategize to defeat your opponents and unlock new characters!

Based on the classic board game, the idea to implement in PICO-8 was provided by my 6 year old son. We had a blast working on it together!

Enjoy!

Vision Quest

Fri, 16 Sep 2022 06:29:22 UTC

Vision Quest

by jahndis

[Click to Play]

"Vision Quest"

I hardly remember the sand stinging my face or the burning fatigue in my limbs, my entire spirit absorbed by the spectacle dancing before my eyes...

280 characters

w,t,s,c,r=128,0,sin,cos,rnd::_::pal({1,2,8,9,10,12,13,14,7},0)for x=0,64 do?"웃",32,87,0
a=38*(x+t*2)b=(x%27*9)%64line(a*2%w-9,b,a%w+9,b,9)for y=0,64 do
n=s(x/w+t)+c(y/w+t)+s(y/w+t*3)*c(x/w+t)pset(x*2+r()*2,y*2+r()*2,y>48+r()+s(x/80)*4and 15or(3*n%3+t*4)%8+1)end
end
t+=.001goto _

Gravity Wrangler

Thu, 01 Sep 2022 05:10:24 UTC

Gravity Wrangler

by jahndis

[Click to Play]

"Gravity Wrangler"

Each world hurtles into the deep, feigning a wandering heart, accelerating their demise. What would they think if they realized that, through the eons, I was the only one standing between them and the frozen abyss...

279 characters

m,o=128,{}for i=1,9 do
o[i]={rnd(m),rnd(m),0,0}end::_::for i=1,18 do
for j=1,64 do
pset(rnd(m),rnd(m),rnd(m)<1 and rnd(3))if(i<10 and j<10)a=o[i]b=o[j]x=a[1]-b[1]y=a[2]-b[2]d=sqrt(x^2+y^2)+.1a[3]-=x/d/999a[4]-=y/d/999
end
a[1]+=a[3]a[2]+=a[4]pset(a[1],a[2],i%9+7)end
flip()goto _

Strummin' Along

Sun, 21 Aug 2022 04:49:59 UTC

Strummin' Along

by jahndis

[Click to Play]

"Strummin' Along"

280 characters

n,m,t,w,o,l=32,128,0,0,ovalfill,line::_::cls(1)for i=0,n do
c=4if(i==n)c=9
o(16,64-i,m,99-i,c)o(-n,78-i,m,m-i,c)end
for i=16,m do
x=97-i
c=4if(i%9>7)c=6
if(i<20or i>46)l(i,x,i+n,x,c)o(n,48,84,62,0)end
for i=7,n,5 do
l(9+i,82,m+i,-n-(w+i)%3,7)end
flip()t+=1if(t%n<1)w=9
w*=.9goto _

Celestial Defender

Sun, 14 Aug 2022 02:02:10 UTC

Celestial Defender

by jahndis

[Click to Play]

Celestial Defender

Save the universe from ancient celestial beings in this procedural shoot-m-up boss runner!

Or complete 24 custom missions ranging in difficulty from a walk in the park to a chaotic hell!

Controls:

Use the arrow keys and Z to select Infinite Mode or a custom mission.
Use the arrow keys to dodge the celestial being's energy blasts

Based on a game my brother and I collaborated on a long while back, mostly to experiment with writing music.

Enjoy!

Update 8/13/2023:

Added the excellent suggestion to make being closer to the enemy do more damage.
Added sound effects

Hitting The Slopes

Sun, 21 Mar 2021 19:45:29 UTC

Hitting The Slopes

by jahndis

[Click to Play]

"Hitting The Slopes"

280 characters

t=0n=0m=64z=128::_::if(n%9<1)then
cls(1)n=1for i=0,z*2 do
line(32,m,i-m,z,7)line(z,50,i-m,z,7)end
end
if(t<1)r=rnd(z)s=32-rnd(m)n+=1
for i=0,z do
?"$",i*6,z-i%4*i,3
for j=0,z do
if(pget(i,j)>7)pset(i,j,6)end
end
x=r+s*sin(t/m)y=t+5if(pget(x,y)>1)pset(x,y,8)
flip()t+=.5t%=z
goto _

I'm A Big Fan

Sat, 20 Mar 2021 23:19:31 UTC

I'm A Big Fan

by jahndis

[Click to Play]

"I'm A Big Fan"

271 characters

t,m,z,l,o,s,c=0,64,999,line,ovalfill,sin,cos::_::cls(1)rectfill(63,0,m,m,5)for j=0,1 do
for i=j*z/4,40+j*z/4 do
x=c((i+t)/z)y=s((i+t)/z)l(m-x*40,m-y*10,m+x*40,m+y*10,0)end
end
o(58,62,69,66,3)o(60,m,67,68,7)pset(m+s(c(t/z))*m/3,m+3+s(c(t/z*2))*m/7,6)flip()t+=4t%=z
goto _

Ziggy Frog

Mon, 19 Oct 2020 05:06:02 UTC

Ziggy Frog

by jahndis

[Click to Play]

Ziggy Frog

Enjoy the simple life of Ziggy the frog as you help him catch flies on his log!

Controls:

Use Z to charge the vertical power of your jump.
Use Left and Right to charge the horizontal power of your jump.
Use X to do one last jump and exit if you're all done playing :)

Eat flies at the peak of your jump! Each fly will give you more jumps!

There are different levels of difficulty for whatever you think seems most fun, along with a "Lazy" mode with an infinite number of jumps, if you're just looking to relax and catch some flies.

Based on a goofy mechanic my kid and I worked on together, I took some extra time to give it some polish and finish it up.

Enjoy!

Update 3/19/2021:

Added jump power/direction UI to better show how high and which direction you'll be jumping
Added shrinking circle that better shows when the frog will eat a fly

Use your phone as a PICO-8 controller on Raspberry Pi

Sun, 11 Oct 2020 06:09:49 UTC

I was setting up PICO-8 on a raspberry pi on my TV, and I thought to myself, "Wouldn't it be nice if I could use my phone as a controller?". Obviously not ideal for games where tight controls are necessary, but a perfectly valid use case for slower or turned-based games.

Enter in Unified Remote!

At it's core, Unified Remote allows you to turn your phone into a remote, and it comes bundled with a bunch of remotes for various applications. However, I couldn't find anything that worked with PICO-8 out of the box. So I took it upon myself to create a custom remote.

This tutorial will assume you are running PICO-8 on a raspberry pi, and does not go into the setup of that piece.

First, you'll need to install the Unified Remote Server on your raspberry pi:

wget -O urserver.deb http://www.unifiedremote.com/d/rpi-deb
sudo dpkg -i urserver.deb 
rm urserver.deb

Next, you'll need to setup Unified Remote Server to run as root whenever your pi starts up:

sudo modprobe uinput # just in case this hasn't been loaded yet

Modify /etc/rc.local (as root) and add the following somewhere before the "exit 0":

/opt/urserver/urserver-start &

Now, when you reboot your pi, Unified Remote Server should start up automatically.

Next, you'll want to add the custom PICO-8 controller that I've put together (feel free to tweak it to your needs using the Docs). To do this, you'll need to create a directory for custom remotes. For me, this was /opt/urserver/custom (even though the documentation says otherwise). You may want to go to the Unified Remote Server Manager interface at http://yourpihostnameorip:9510/web/#/log and see where the logs say it's looking for custom remotes to be sure. So in my case:

sudo mkdir /opt/urserver/custom
sudo mkdir /opt/urserver/custom/pico8

# Set permissions to a user other than root, so it's easier to work with
# Substitute your user here (or don't do it at all and just use root)
sudo chown pi /opt/urserver/custom/pico8
sudo chgrp pi /opt/urserver/custom/pico8

Then, you'll want to put the following files in the new pico8 directory:

meta.prop

meta.name: PICO-8
meta.author: John Langewisch
meta.description: Gamepad for PICO-8
meta.tags.category: gaming

layout.xml

<?xml version="1.0" encoding="utf-8"?>
<layout orientation="landscape" scroll="none">
  <row weight="1">
  </row>

  <row weight="6">
    <space weight="1"/>

    <grid color="#84769C" weight="4">
      <row>
        <space/>
        <button icon="up" ondown="core.keyboard.down,up" onup="core.keyboard.up,up"/>
        <space/>
      </row>

      <row>
        <button icon="left" ondown="core.keyboard.down,left" onup="core.keyboard.up,left"/>
        <space/>
        <button icon="right" ondown="core.keyboard.down,right" onup="core.keyboard.up,right"/>
      </row>

      <row>
        <space/>
        <button icon="down" ondown="core.keyboard.down,down" onup="core.keyboard.up,down"/>
        <space/>
      </row>
    </grid>

    <space weight="1"/>

    <grid weight="4">
      <row weight="2">
        <button image="logo.png" scale="fit" color="transparent"/>
      </row>

      <row weight="1">
      </row>

      <row>
        <space weight="1"/>
        <button text="SELECT" weight="6" ondown="core.keyboard.down,escape" onup="core.keyboard.up,escape"/>
        <space weight="1"/>
        <button text="START" weight="6" ondown="core.keyboard.down,enter" onup="core.keyboard.up,enter"/>
        <space weight="1"/>
      </row>
    </grid>

    <space weight="1"/>

    <grid weight="4">
      <row weight="3">
      </row>

      <row weight="4">
        <button icon="select" color="#FF6699" weight="2" ondown="core.keyboard.down,z" onup="core.keyboard.up,z"/>
        <space weight="1"/>
        <button icon="docclose" color="#FFCCAA" weight="2" ondown="core.keyboard.down,x" onup="core.keyboard.up,x"/>
      </row>

      <row weight="3">
      </row>
    </grid>

    <space weight="1"/>
  </row>

  <row weight="4">
  </row>
</layout>

icon.png (I just took the PICO-8 icon)
logo.png (I just took the PICO-8 logo)

Once you've added those files under /opt/urserver/custom/pico8 you should be able to restart the server to load the new remote either through the web UI, or by running:

/opt/urserver/urserver-stop
/opt/urserver/urserver-start

If things don't seem to be working, you can go to the web UI and check the logs for issues.

Now, you'll need to download the Unified Remote app to your phone (I paid for the full version, but it shouldn't be required). When you start the app, it should automatically find your server. Hopefully, when you add a new remote, and open the Gaming category, you should see your new PICO-8 remote. Add it, select it, and you should be able to control PICO-8 while it's running on your pi!

A few caveats:

The files assume american style keyboard, feel free to tweak the buttons in the layout if that's an issue.
I have the layout set to landscape orientation, but apparently Unified Remote doesn't respect that. I have to turn on screen rotation and make sure I'm in the correct orientation for it to look decent.
I had some issues with the Unified Remote app picking up changes made to the meta.prop file. Clearing the app data, and starting from scratch solved it.
I am using the wifi data connection for Unified Remote. This obviously relies on semi-decent network speeds to be responsive. Apparently there's also bluetooth connection, but I have not attempted that.
"Select" is Escape, "Start" is Enter. Again, tweak to your heart's content.

Hopefully this is useful to folks!

Keep It Alive

Sat, 18 Apr 2020 05:51:11 UTC

Keep It Alive

by jahndis

[Click to Play]

"Keep It Alive"

280 characters

p,v,t,m,z,f,s=0,0,0,64,128,circfill,sin::_::cls(0)c=3
for i=0,m do
if(i==m)c=0
x=m+9*s(i/z+p/z)y=z+4-i+4*s(i/z+t/z)-4*s(p/32)f(x,y,18+c-i/8,c)end
f(m,t%m,2,12)for i=0,m do
f(x+i/4*s((i+p*5+t)/z),y+7-i/2+i/7*s(p/z),4-i/16,8)end
flip()a=.1-rnd(.2)t+=2v=max(-1,min(1,v+a))p+=v
goto _

Weaver

Mon, 09 Mar 2020 04:24:35 UTC

Weaver

by jahndis

[Click to Play]

"Weaver"

280 characters

poke(24364,7)::n::z,a,r,f,p=64,0,rnd,rectfill,pset
cls(0)w=r(32)h=r(32)c=1+r(14)d=c+1+r(14)x,y,b=z,z,r(1)f(w,h,z,z,c)f(w,h,w-9,z,d)::_::p(x,y)p(x,h+z-y)p(w+z-x,y)b+=r(.4)-.2x=min(max(x+cos(b),w),z)y=min(max(y+sin(b),h),z)::m::flip()
if(x>w and y>h)goto _
a+=1
if(a>z)goto n
goto m

Lunar Blackout

Thu, 05 Mar 2020 06:55:30 UTC

Lunar Blackout

by jahndis

[Click to Play]

"Lunar Blackout"

279 characters

t,m,v,z,r,c,p=0,16,64,128,rectfill,circfill,pset::_::cls(1)c(99,24,20,7)r(0,v,z,z,0)for i=0,8 do
x=z-i*9y=abs(sin(i*.11))r(x,v,x+7,v-y*44,0)for j=0,z do
c((1+j%4)*t/9%z-i*5+j%63*m-z,m+y*4+j%2*m,6-y*2,2)end
g,h=i*m-t%m,i*32+t%32p(g,v,7)p(h,v)p(g+1,v,8)p(h-1,v)end
t+=1flip()goto _

Sonder

Wed, 04 Mar 2020 05:41:08 UTC

Sonder

by jahndis

[Click to Play]

"Sonder"

276 characters

b,z,x,y,d,r,g=0,128,{},{},{},rnd,pget
cls(0)::_::for i=0,z do
for j=0,z do
c=g(i,j)
if(c>0)pset(i,j,c-1)
end
end
for i=1,9 do
if(b<9)b+=1x[i]=r(z)y[i]=r(z)d[i]=r(1)
circfill(x[i],y[i],2,9)x[i]+=cos(d[i])*r(3)y[i]+=sin(d[i])*r(3)d[i]+=r(.1)-.05x[i]%=z
y[i]%=z
end
flip()goto _

Pandemic

Tue, 03 Mar 2020 07:32:02 UTC

Pandemic

by jahndis

[Click to Play]

"Pandemic"

265 characters

z,g,s,r,f=128,pget,pset,rnd,flr
cls(0)
for i=1,9 do
x=f(r(z))y=f(r(z))
s(x,y,8)
end
::_::
for i=1,z do
x=f(r(z))y=f(r(z))
c=g(x,y)
a=g(x+1,y)+g(x-1,y)+g(x,y+1)+g(x,y-1)
if(c>1)then
s(x,y,c-1)elseif(c==1)then
elseif(a>4 and r(a)>4)then
s(x,y,8)end
end
flip()
goto _

Sweet Sip

Thu, 20 Feb 2020 05:46:03 UTC

Sweet Sip

by jahndis

[Click to Play]

"Sweet Sip"

279 characters

m,z,t,c,l,s=55,127,0,circfill,line,sin::_::cls(0)for i=-6,6 do
c(m-i*3+s(i*t/z),80+i*6,12-i*i,7)l(46+i,90,41,115,7)c(60,m,9)l(66+i/6,48+i/7,87,36,1)end
?"●",m,50,1
for i=0,z do
l(m-sqrt(i),66+i/8,m+s((t-i/9)/z)*50,66+i/m-s(t/z*2)*9,3)l(z+4,3,90+i/9,9+i/4,8)end
t+=4
flip()goto _

Evening Train Ride

Tue, 18 Feb 2020 06:58:22 UTC

Evening Train Ride

by jahndis

[Click to Play]

"Evening Train Ride"

280 characters

z,t,r,c=128,0,rectfill,circfill::_::cls(2)
c(40,64,25,10)
r(0,90,z,z,1)
for i=0,z do
r(i,64-sin(sin((i-t)/999))*20,i,90,3)
r(i,70,i,99-sqrt(abs(sin((i-t*4)/z)*640)),6)
end
for i=0,32 do
r(40+24*i,65,64+24*i-2,69,5)
if(i%8<7)then r(41+3*i,67,42+3*i,67,9)
end
end
t+=1
flip()goto _