Make a campfire or torch flicker softly, stronger as the fuel runs low

A light that picks a new random brightness every frame buzzes like a broken lamp, and one that follows a plain wave looks mechanical. Here is how to get a lively but gentle flicker that repeats exactly, and how to make it nervous when the fire is about to die.

Why this works

Fire is neither steady nor jumpy: it drifts and now and then twitches. Smooth random values give the drift, a faster, weaker layer on top gives the twitch. Because the values come from the clock and a seed, not from dice thrown each frame, a replay or a second player sees the same fire.

When not to use it

Don't use it where the light itself carries information, such as a warning lamp, a lighthouse or a signal fire that must blink in a pattern, or for players who react badly to flicker. Offer a steady glow, or an off switch, there.

In the full entry

• What to build, step by step
• Starting values and the reason for each
• 3 common mistakes and the fix
• 26 lines of example code with 4 checks that pass
• How your AI shows you that it works

Say this to your AI

Use the Spielerando entry "Make a campfire or torch flicker softly, stronger as the fuel runs low" (read_entry campfire-flicker-from-smooth-noise) in my game. Build it step by step, and show me how you checked that it works.

Or skip this and connect the MCP: your AI then finds all of this by itself.Connect the MCP