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Program thumbnail for "{props.program.title}"

Title	3D Minecraft Tunnel
ID	1193254153
Created	13 years ago, 1354554093308
Updated	13 years ago, 1355156496141
Code	// A port of Notch's program, found here: // http://jsfiddle.net/uzMPU/ (function() { angleMode = "radians"; var ctx; var pixels; var canvas; var pimg; var initDone = false; var w = 200; var h = 200; var dataMap = []; dataMap.length = 64 * 64 * 64; var texmap = []; texmap.length = 16 * 16 * 3 * 16; var renderMinecraft = function() { var xRot = sin(millis() % 10000 / 10000 * PI * 2) * 0.4 + PI / 2; var yRot = cos(millis() % 10000 / 10000 * PI * 2) * 0.4; var yCos = cos(yRot); var ySin = sin(yRot); var xCos = cos(xRot); var xSin = sin(xRot); var ox = 32.5 + millis() % 10000 / 10000 * 64; var oy = 32.5; var oz = 32.5; for ( var x = 0; x < w; x++) { var ___xd = (x - w / 2) / h; for ( var y = 0; y < h; y++) { var __yd = (y - h / 2) / h; var __zd = 1; var ___zd = __zd * yCos + __yd * ySin; var _yd = __yd * yCos - __zd * ySin; var _xd = ___xd * xCos + ___zd * xSin; var _zd = ___zd * xCos - ___xd * xSin; var col = 0; var br = 255; var ddist = 0; var closest = 32; for ( var d = 0; d < 3; d++) { var dimLength = _xd; if (d === 1) { dimLength = _yd; } if (d === 2) { dimLength = _zd; } var ll = 1 / (dimLength < 0 ? -dimLength : dimLength); var xd = (_xd) * ll; var yd = (_yd) * ll; var zd = (_zd) * ll; var initial = ox - (ox \| 0); if (d === 1) { initial = oy - (oy \| 0); } if (d === 2) { initial = oz - (oz \| 0); } if (dimLength > 0) { initial = 1 - initial; } var dist = ll * initial; var xp = ox + xd * initial; var yp = oy + yd * initial; var zp = oz + zd * initial; if (dimLength < 0) { if (d === 0) { xp--; } if (d === 1) { yp--; } if (d === 2) { zp--; } } while (dist < closest) { var tex = dataMap[(zp & 63) << 12 \| (yp & 63) << 6 \| (xp & 63)]; if (tex > 0) { var u = ((xp + zp) * 16) & 15; var v = ((yp * 16) & 15) + 16; if (d === 1) { u = (xp * 16) & 15; v = ((zp * 16) & 15); if (yd < 0) { v += 32; } } var cc = texmap[u + v * 16 + tex * 256 * 3]; if (cc > 0) { col = cc; ddist = 255 - ((dist / 32 * 255) \| 0); br = 255 * (255 - ((d + 2) % 3) * 50) / 255; closest = dist; } } xp += xd; yp += yd; zp += zd; dist += ll; } } var r = ((col >> 16) & 0xff) * br * ddist / (255 * 255); var g = ((col >> 8) & 0xff) * br * ddist / (255 * 255); var b = ((col) & 0xff) * br * ddist / (255 * 255);// + (255 - pixels.data[(x + y * w) * 4 + 0] = r; pixels.data[(x + y * w) * 4 + 1] = g; pixels.data[(x + y * w) * 4 + 2] = b; } } }; var init = function() { var i, x, y, z, xd, yd, zd; for (i = 1; i < 16; i++) { var br = 255 - ((random(1) * 96) \| 0); for (y = 0; y < 16 * 3; y++) { for (x = 0; x < 16; x++) { var color = 0x966C4A; if (i === 4) { color = 0x7F7F7F; } if (i !== 4 \|\| ((random(1) * 3) \| 0) === 0) { br = 255 - ((random(1) * 96) \| 0); } if ((i === 1 && y < (((x * x * 3 + x * 81) >> 2) & 3) + 18)) { color = 0x6AAA40; } else if ((i === 1 && y < (((x * x * 3 + x * 81) >> 2) & 3) + 19)) { br = br * 2 / 3; } if (i === 7) { color = 0x675231; if (x > 0 && x < 15 && ((y > 0 && y < 15) \|\| (y > 32 && y < 47))) { color = 0xBC9862; xd = (x - 7); yd = ((y & 15) - 7); if (xd < 0) { xd = 1 - xd; } if (yd < 0) { yd = 1 - yd; } if (yd > xd){ xd = yd; } br = 196 - ((random(1) * 32) \| 0) + xd % 3 * 32; } else if (((random(1) * 2) \| 0) === 0) { br = br * (150 - (x & 1) * 100) / 100; } } if (i === 5) { color = 0xB53A15; if ((x + (y >> 2) * 4) % 8 === 0 \|\| y % 4 === 0) { color = 0xBCAFA5; } } if (i === 9) { color = 0x4040ff; } var brr = br; if (y >= 32) { brr /= 2; } if (i === 8) { color = 0x50D937; if (((random(1) * 2) \| 0) === 0) { color = 0; brr = 255; } } var col = (((color >> 16) & 0xff) * brr / 255) << 16 \| (((color >> 8) & 0xff) * brr / 255) << 8 \| (((color) & 0xff) * brr / 255); texmap[x + y * 16 + i * 256 * 3] = col; } } } for (x = 0; x < 64; x++) { for (y = 0; y < 64; y++) { for (z = 0; z < 64; z++) { i = z << 12 \| y << 6 \| x; yd = (y - 32.5) * 0.4; zd = (z - 32.5) * 0.4; dataMap[i] = (random(1) * 16) \| 0; if (random(1) > sqrt(sqrt(yd * yd + zd * zd)) - 0.8) { dataMap[i] = 0; } } } } pimg = createImage(w, h, 1); canvas = pimg.sourceImg; ctx = canvas.getContext("2d"); pixels = ctx.createImageData(w, h); for (i = 0; i < w * h; i++) { pixels.data[i * 4 + 3] = 255; } initDone = true; }; draw = function() { if (initDone) { renderMinecraft(); ctx.putImageData(pixels, 0, 0); image(pimg, 0, 0, 400, 400); } else { init(); } }; })();
Folds
Fork	false
Key	ag5zfmtoYW4tYWNhZGVteXIUCxIKU2NyYXRjaHBhZBiJuv64BAw
Votes	1643
Spin-Offs	100
Type
Width	400
Height	400
User Flagged	false
Origin Scratchpad	null
Hidden From Hotlist	false
Restricted Posting	false
By Child	false
Author Nick	John (Khan Team)
Author Name	john
Author ID	kaid_793081664775613255842983
Author Profile Access	PUBLIC

Archive Data

Added	1 years ago, 1707881054199
Updated	7 months ago, 1744820416602
Source Deleted	unknown