local function renderDonut()
local A, B = 0, 0 -- Rotation angles
local width, height = 40, 20 -- Screen size in characters
local theta_spacing = 0.07
local phi_spacing = 0.02
local R1, R2, K2 = 1, 2, 5
local K1 = width * K2 * 3 / (8 * (R1 + R2))
while true do
local z_buffer = {}
local output = {}
-- Initialize buffers
for i = 1, width * height do
z_buffer[i] = 0
output[i] = ' '
end
-- Render the donut
for theta = 0, 2 * math.pi, theta_spacing do
for phi = 0, 2 * math.pi, phi_spacing do
local cosA, sinA = math.cos(A), math.sin(A)
local cosB, sinB = math.cos(B), math.sin(B)
local cosTheta, sinTheta = math.cos(theta), math.sin(theta)
local cosPhi, sinPhi = math.cos(phi), math.sin(phi)
local circleX = R2 + R1 * cosTheta
local circleY = R1 * sinTheta
local x = circleX * (cosB * cosPhi + sinA * sinB * sinPhi) - circleY * cosA * sinB
local y = circleX * (sinB * cosPhi - sinA * cosB * sinPhi) + circleY * cosA * cosB
local z = K2 + cosA * circleX * sinPhi + circleY * sinA
local ooz = 1 / z
local xp = math.floor(width / 2 + K1 * ooz * x)
local yp = math.floor(height / 2 - K1 * ooz * y)
local luminance = cosTheta * cosPhi * sinB - cosA * cosTheta * sinPhi - sinA * sinTheta + cosB * (cosA * sinTheta - cosTheta * sinPhi * sinA)
if luminance > 0 then
local index = xp + yp * width
if index >= 1 and index <= width * height and ooz > z_buffer[index] then
z_buffer[index] = ooz
local chars = {'.', ',', '-', '~', ':', ';', '=', '!', '*', '#', '$', '@'}
local luminanceIndex = math.floor(luminance * 8)
output[index] = chars[luminanceIndex] or '.'
end
end
end
end
-- Print the frame
local frame = ""
for i = 1, width * height do
if i % width == 0 then
frame = frame .. "\n"
end
frame = frame .. output[i]
end
print(frame)
task.wait(0.05) -- Control speed
A = A + 0.04
B = B + 0.08
end
end
-- Start rendering in a coroutine
task.spawn(renderDonut)
ÂżWhat the Robloxment is this?
The script is a spinning ASCII donut in Roblox Studio’s Output window, based on the classic ASCII donut algorithm (“donut.c”). It uses math to simulate 3D rotation, rendering a torus (donut shape) using ASCII characters.
How It Works:
- Uses math to rotate the donut
- Two rotation angles
AandBcontinuously update. -
thetaandphicontrol the donut’s shape in 3D.
- Projects 3D points onto a 2D ASCII grid
- Converts 3D coordinates to screen coordinates (
xp,yp). - Uses depth buffering (
z_buffer) to determine which points are in front.
- Chooses ASCII characters based on lighting
- Brighter areas use characters like
@and#, while darker areas use.or-.
- Prints the donut frame-by-frame
- The
print()function continuously updates, creating a spinning effect in the Output.
Where to See It?
- Run it in Roblox Studio inside a Script (
ServerScriptServiceorStarterPlayerScripts). - Open the Output window (
View → Outputor Dev Console with F9). - The donut will spin continuously, updating in real-time.
- PRECAUTION: you need to scroll down to the Dev Console to see it animate
So ,the unique bug is there a missaligned line of characters at the right of the time date so I let it here
