Hot dweets by u/andrea270872

function u(t) {

c.width=1920 // clear the canvas
for(i=0;i<9;i++)
x.fillRect(400+i*100+S(t)*300,400,50,200) // draw 50x200 rects

} // 122/140

Please log in (or register) to post a dweet (copy-paste the code somewhere safe to save it meanwhile)


    u(t) is called 60 times per second.
    t: Elapsed time in seconds.
    S: Shorthand for Math.sin.
    C: Shorthand for Math.cos.
    T: Shorthand for Math.tan.
    R: Function that generates rgba-strings, usage ex.: R(255, 255, 255, 0.5)
    c: A 1920x1080 canvas.
    x: A 2D context for that canvas.

Try the new frontend: beta.dwitter.net
Current theme challenge: #Opposites

show FPS hide FPS share fullscreen

andrea270872

function u(t) {

c.width|=c.onclick=_=>{T=19}
T|=0
x.fillRect(450+S(t)*400,99+5*(T>9?((T---9))**2:T?((9-T--))**2:120),50,50)
x.fillRect(S(t/2)*90,760,1e3,50)

Mar 23 2019 6:31 PM UTC

}// 140/140

Please log in (or register) to post as a new dweet (copy-paste code somewhere safe to save it meanwhile).

Jump on the enge! (click to jump)

u/katkip

#interactive
u/katkip

#game
u/andrea270872

I'm trying to compress a timed state machine in a single function... here T is the "clock" and the long test is the state machine function... :>

show FPS hide FPS share 1 remix fullscreen

andrea270872

function u(t) {

c.width|=j=1
for(;j++<15;)for(i=19;i--;x.font=C(t)+6+"em'")x.fillText([...'🏡🌊🌳 '][~~((S((i-~(S(t)*6))*(j+~(C(t)*9))*97)+1)*2)],i*99,j*69)

Mar 20 2019 5:32 PM UTC

}// 137/140

Please log in (or register) to post as a new dweet (copy-paste code somewhere safe to save it meanwhile).

A map with panning and "zoom"

u/tomxor

oh wow neat! i keep missing these ones cos on chromium linux i get a bunch of tofu - FF is ok though.
u/joeytwiddle

I had a lot of tofu on Ubuntu but then I installed a new Manjaro ;-)
u/tomxor

I'm running minimal a debian, I think it's just missing font packages but can't be bothered to hunt for them. I will try Arch one day when I'm braver :P

show FPS hide FPS share fullscreen

andrea270872

remix of d/12689 by u/andrea270872

function u(t) {

c.width|=q=25
p=q*q*t%2e3
D=(c,d)=>4e3/((z-c)**2+(w-d)**2)**.5
for(i=0;i++<q*q;)x.fillRect(z=~~(i/q)*95,w=i%q*60,m=D(p,450)+D(800,p),m)

Mar 21 2019 2:47 PM UTC

}// 135/140

Please log in (or register) to post as a new dweet (copy-paste code somewhere safe to save it meanwhile).

2 swimming magnets (ver2)

u/f8f82804

#halftone #dither

show FPS hide FPS share fullscreen

andrea270872

function u(t) {

r=_=>Math.random()
x.font=2+r()*3+"em'"
x.fillStyle='white'
for(i=7;i--;)x.fillText([...'🌱🌾🍁❄'][(t>>2)%4],r()*2e3,75+r()*1e3)

Mar 19 2019 4:57 PM UTC

}// 125/140

Please log in (or register) to post as a new dweet (copy-paste code somewhere safe to save it meanwhile).

Year

u/lionleaf

#seasons I'm enjoying this one!
u/DataMeta

Heh. Nice.

show FPS hide FPS share fullscreen

andrea270872

function u(t) {

c.onclick=e=>{Y=K}
c.width|=K=1e3
Y=t?Y:0
x.fillRect(X=t*500%2e3,9,B=50+(10<Y&Y<99)*(950<X&X<K)*99,B)
x.fillRect(K,Y?Y-=20:K,9,50)

Mar 17 2019 2:46 PM UTC

}// 130/140

Please log in (or register) to post as a new dweet (copy-paste code somewhere safe to save it meanwhile).

William Tell (remake of my first game on C=64) - click to shoot the black "apple"

u/katkip

#game
u/katkip

#interactive

show FPS hide FPS share fullscreen

andrea270872

function u(t) {

c.width|=i=0
with(x)for(;i++<15;fillText("🚗",2e3-i*t*97%2e3,i*70),font=i**.9+"em'")fillRect(0,i**.9*99,2e3,i**.6)

Mar 17 2019 3:39 PM UTC

}// 113/140

Please log in (or register) to post as a new dweet (copy-paste code somewhere safe to save it meanwhile).

infinite traffic

u/andrea270872

(after suggestion from #vinca :> )
u/f8f82804

#parallax

show FPS hide FPS share fullscreen

andrea270872

function u(t) {

c.onclick=e=>Y=K
c.width|=K=1e3
Y=t?Y:0
x.font="5em'"
x.fillText("🔼",K,Y?Y-=20:K)
X=t*500%2e3
Z=X*Y
x.fillText(18e3<Z&Z<21e3?"☠":"🍎",X,99)

Mar 19 2019 2:22 PM UTC

}// 138/140

Please log in (or register) to post as a new dweet (copy-paste code somewhere safe to save it meanwhile).

William Tell ver.2 - click to shoot the apple

u/andrea270872

#interactive

show FPS hide FPS share fullscreen

andrea270872

remix of d/12771 by u/andrea270872

function u(t) {

c.width|=K=1e3
A=[(t*97%11-5)*K,(t*89%13-6)*K,0]
P=t?P.map(([i,j,z,v])=>[i,j,(z+1)%99,x.fillRect(K+i/z,500+j/z,z,z)]):[A]
P[K]||P.push(A)

Mar 15 2019 7:44 PM UTC

}// 137/140

Please log in (or register) to post as a new dweet (copy-paste code somewhere safe to save it meanwhile).

Build-up!

Show more comments…
u/Xen

love it
u/pavel

103 for(c.width|=K=k=1e3;k--;z>0&&x.fillRect(K+(k*97/60%11-5)*K/z,500+(k*89/60%13-6)*K/z,z,z))z=(60*t-k)%99
u/pavel

Looks like the code you started with used Math.random at each step which made the ultimate position of each square at time 't' impossible to determine directly. Switching to instead use any function of just t makes it quite simple so there is no need to initialize stuff at time 0 and keep it updated.
u/pavel

I learned that in d/11421 to save chars and make d/11424
u/andrea270872

great. thanks very much
u/andrea270872

In my head I was thinking also that t*97%11 is a pseudo-random generator...
u/katkip

Satisfying

show FPS hide FPS share fullscreen

andrea270872

remix of d/12769 by u/andrea270872

function u(t) {

c.width|=r=Math.random
c.onclick=e=>{P.push([500,500,r()*5-2,-r()*10])}
P=t?P.map(([i,j,u,v])=>[i+u,j+v,u,v+.1,x.fillRect(i,j,8,8)]):[]

Mar 17 2019 1:23 PM UTC

}// 135/140

Please log in (or register) to post as a new dweet (copy-paste code somewhere safe to save it meanwhile).

Click to create a new particle

u/Jezza

#interactive
u/joeytwiddle

{P.push([e.x*3.4,e.y*3.4,r()*5-2,-r()*10])}

show FPS hide FPS share fullscreen

andrea270872

function u(t) {

c.width|=r=Math.random
A=[K=500,K,r()*5-2,-r()*10]
P=t?P.map(([i,j,u,v]=e)=>[(i+u)%2e3,j+v,u,v+.1,x.fillRect(i,j,8,8)]):[A]
P[K]?0:P.push(A)

Mar 15 2019 11:30 AM UTC

}// 140/140

Please log in (or register) to post as a new dweet (copy-paste code somewhere safe to save it meanwhile).

Particle Fountain, variable number of particles, max 500, non-repeating

u/andrea270872

Thanks to LimeLaser for the examples on the use of arrays!
u/katkip

#firework
u/LimeLaser

This is great, I dig it!

dwitter.net | andrea270872 (468)