A long fall passes straight through a thin floor or roof

Dig a deep shaft, build a tall tower and jump: after a few seconds the character is falling so fast that a thin plank or a ceiling of one layer is simply skipped between two frames. Here is how to land on what was crossed, and why the fall needs a top speed.

Why this works

What matters is not where the feet are now, but whether they crossed a floor during the step. Asking about the path between old and new position catches thin floors that a quick look at the end point would miss.

When not to use it

Not needed when floors are thick and falls slow, because a plain overlap test already works there. Also costs effort in games with many fast things; check only the few fast ones, like the player or bullets.

In the full entry

• What to build, step by step
• Starting values and the reason for each
• 3 common mistakes and the fix
• 20 lines of example code with 5 checks that pass
• How your AI shows you that it works

Say this to your AI

Use the Spielerando entry "A long fall passes straight through a thin floor or roof" (read_entry fast-fall-through-thin-floors) 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