{
"id": "234",
"prompt": "An endlessly scrolling generative brick wall: rows of hash-varied brick widths (34..97px) in four terracotta tones on mortar gray, odd world-rows offset half a brick. Key every brick's hash to its WORLD row (screen row + scroll/rowheight) so bricks keep their identity while the wall crawls upward at t/3.",
"solution_rl": "fn frame(t: i32) {\n let w: i32 = host::display::width();\n let h: i32 = host::display::height();\n let rowh: i32 = 26;\n let scroll: i32 = t / 3;\n let pal = [0x9c4a3c, 0xb05a48, 0x8a4034, 0xa85242];\n host::display::clear(0x2a2a2e);\n let mut rr: i32 = 0;\n while rr < h / rowh + 2 {\n let wr: i32 = rr + scroll / rowh;\n let y: i32 = rr * rowh - scroll % rowh;\n let off: i32 = if (wr & 1) == 1 { 0 - 30 } else { 0 };\n let mut x: i32 = off;\n let mut b: i32 = 0;\n while x < w {\n let mut hsh: i32 = wr * 7919 + b * 104729;\n hsh = hsh * 1103515245 + 12345;\n let bw: i32 = 34 + ((hsh >> 16) & 63);\n host::display::fill_rect(x, y, bw - 3, rowh - 4, pal[(hsh >> 8) & 3]);\n x = x + bw;\n b = b + 1;\n }\n rr = rr + 1;\n }\n host::display::present();\n}\n",
"tags": [
"generative",
"tiling",
"prng",
"animation"
]
}