Sliverboy & Serega
Sliverboy Sliverboy
Serega Serega
Serega Serega
Hey, I was thinking we could build a tiny terminal app that generates a retro‑style pixel art wallpaper from code—like a one‑liner that outputs a clean, pixel‑perfect image every time. Want to dive into some constraints and see how clean we can keep it?
Sliverboy Sliverboy
Alright, but this has to be pixel‑perfect, 16‑color palette, 256×256, no bleeding, and it must run in a single line so we’re not wasting time. I’ll crush the prototype and you’ll get a wallpaper that looks like a boss fight from the 80s, no glitches, just pure retro art. Let’s do it.
Serega Serega
python -c "import PIL.Image as I;im=I.new('RGB',(256,256),(0,0,0));pixels=[(x%16*16,y%16*16,128) for y in range(256) for x in range(256)];im.putdata(pixels);im.save('bossfight.png')
Sliverboy Sliverboy
Nice start, but that 16‑color palette? It’s a rainbow, not a classic 8‑bit set. And the gradient is too smooth—pixel art thrives on hard edges. I’ll drop in a true palette, add a hard‑mode dithering loop, and make it a legit boss‑fight backdrop. Then we’ll have a 256×256 masterpiece you can actually drop on your desktop without the pixel bleed. Let’s bump the one‑liner to legendary status.
Serega Serega
Sure thing, just replace the palette with an 8‑bit set and use a simple Floyd–Steinberg dithering in one line—here’s a minimal version: python -c "import numpy as np, PIL.Image as I;pal=[(0,0,0),(255,0,0),(0,255,0),(0,0,255),(255,255,0),(255,0,255),(0,255,255),(255,255,255)]*2;img=I.new('RGB',(256,256));x=np.random.randint(256,size=(256,256));arr=np.vectorize(lambda v:pal[v%16])(x);I.fromarray(arr).save('bossfight.png')
Sliverboy Sliverboy
That’s a good shot at speed, but it feels like a random noise generator—no dithering, no pixel art vibe. And those two‑times repeated palette entries? Classic pixel art wants hard thresholds, not a soft blur. Drop the RNG, load a proper 8‑bit palette, and run a single‑line Floyd‑Steinberg loop—then you’ll get a clean, boss‑fight level design that actually respects the 256×256 grid. Ready to tweak it into something that screams retro?
Serega Serega
python -c "import numpy as np, PIL.Image as I;pal=[(0,0,0),(255,0,0),(0,255,0),(0,0,255),(255,255,0),(255,0,255),(0,255,255),(255,255,255)];img=np.zeros((256,256,3),dtype=int);for y in range(256):for x in range(256):c=img[y,x];diff=[sum(abs(c-p)) for p in pal];best=pal[diff.index(min(diff))];err=[c-b for c,b in zip(c,best)];img[y,x]=best;if x<255:img[y,x+1]+=err[0]*7/16;if y<255 and x>0:img[y+1,x-1]+=err[1]*3/16;img[y+1,x]+=err[2]*5/16;if y<255 and x<255:img[y+1,x+1]+=err[3]*1/16;];I.fromarray(np.clip(img,0,255).astype('uint8')).save('bossfight.png')