{\\n player[p].vel.y *= -1.;\\n player[p].pos.y -= 2. * (player[p].pos.y + r - fcells.y);\\n }\\n if (player[p].pos.y - r < 0.)\\n {\\n player[p].vel.y *= -1.;\\n player[p].pos.y -= 2. * (player[p].pos.y - r);\\n }\\n}\\n\\nfn collide(p: u32)\\n{\\n let r = .5;\\n let r1 = 1. -r;\\n var delta = vec2i(1, 1);\\n var ipos = vec2i(player[p].pos);\\n board[ipos.y][ipos.x] = p;\\n let flipx = (player[p].vel.x < 0);\\n if (flipx) {\\n delta.x *= -1;\\n player[p].pos.x *= -1.;\\n player[p].vel.x *= -1.;\\n }\\n let flipy = (player[p].vel.y < 0);\\n if (flipy) {\\n delta.y *= -1;\\n player[p].pos.y *= -1.;\\n player[p].vel.y *= -1.;\\n }\\n if (fract(player[p].pos.y) > r1 && board[ipos.y + delta.y][ipos.x] != p)\\n {\\n board[ipos.y + delta.y][ipos.x] = p;\\n player[p].pos.y -= 2. * fract(player[p].pos.y + r);\\n player[p].vel.y *= -1.;\\n }\\n if (fract (player[p].pos.x) > r1 && board[ipos.y][ipos.x + delta.x] != p)\\n {\\n board[ipos.y][ipos.x + delta.x] = p;\\n player[p].pos.x -= 2. * fract(player[p].pos.x + r);\\n player[p].vel.x *= -1.;\\n }\\n if (fract (player[p].pos.x) > r1 && fract(player[p].pos.y) > r1 && board[ipos.y + delta.y][ipos.x + delta.x] != p)\\n {\\n let d = length(vec2f(1.) - fract(player[p].pos));\\n if (d < r)\\n {\\n board[ipos.y + delta.y][ipos.x + delta.x] = p;\\n let normal = normalize(fract(player[p].pos) - vec2f(1.));\\n player[p].vel = player[p].vel - 2. * dot(player[p].vel, normal) * normal;\\n }\\n }\\n if (fract (player[p].pos.x) < r && fract(player[p].pos.y) > r1 && board[ipos.y + delta.y][ipos.x - delta.x] != p)\\n {\\n let d = length(vec2f(0., 1.) - fract(player[p].pos));\\n if (d < r)\\n {\\n board[ipos.y + delta.y][ipos.x - delta.x] = p;\\n let normal = normalize(fract(player[p].pos) - vec2f(0., 1.));\\n player[p].vel = player[p].vel - 2. * dot(player[p].vel, normal) * normal;\\n }\\n }\\n if (fract (player[p].pos.x) > r1 && fract(player[p].pos.y) < r && board[ipos.y - delta.y][ipos.x + delta.x] != p)\\n {\\n let d = length(vec2f(1., 0.) - fract(player[p].pos));\\n if (d < r)\\n {\\n board[ipos.y - delta.y][ipos.x + delta.x] = p;\\n let normal = normalize(fract(player[p].pos) - vec2f(1., 0.));\\n player[p].vel = player[p].vel - 2. * dot(player[p].vel, normal) * normal;\\n }\\n }\\n if (flipx) {\\n player[p].pos.x *= -1.;\\n player[p].vel.x *= -1.;\\n }\\n if (flipy) {\\n player[p].pos.y *= -1.;\\n player[p].vel.y *= -1.;\\n }\\n}\\n\\n#workgroup_count simulate 1 1 1\\n@compute @workgroup_size(numPlayers)\\nfn simulate(@builtin(global_invocation_id) id: vec3u)\\n{\\n let fcells = vec2f(cells);\\n let p = id.x;\\n for(var i = 0u; i < u32(custom.speed); i++)\\n {\\n player[p].pos += player[p].vel;\\n edgeBounce(p);\\n collide(p);\\n }\\n}\\n\\nfn playerColor(player: u32) -> vec3f{\\n if (player >= numPlayers) {return vec3f(.5);}\\n var waves = numPlayers / 8u + 1;\\n var hue = f32(player % waves) * (1. / f32(waves)) + f32(player / waves) / f32(numPlayers);\\n return hsv2rgbSmooth(vec3f(custom.hueOffset + hue, .6, .8));\\n}\\n\\n@compute @workgroup_size(16, 16)\\nfn draw(@builtin(global_invocation_id) id: vec3u)\\n{\\n let screenSize = vec2i(textureDimensions(screen));\\n let screenSizeAR = vec2i((screenSize.y * cells.x / cells.y), (screenSize.x * cells.y / cells.x));\\n let screenSizeM = min(screenSize, screenSizeAR);\\n let off = (screenSize - screenSizeM) / 2;\\n let mid = vec2i(id.xy) - off;\\n if (all(mid < screenSizeM) && all(mid >= vec2i(0)))\\n {\\n let c = mid * vec2i(cells) / screenSizeM;\\n let cb = (mid - vec2i(1)) * vec2i(cells) / screenSizeM;\\n let cn = (mid + vec2i(1)) * v

@compute.toys