Two builders place different blocks on the same spot and the world keeps neither properly

In a shared world many people change tiny pieces at once, and the save must hold only what changed. Here is how each spot carries its own change counter, how a late builder is told no, and the small trap that appears when something is removed.

Why this works

A builder acts on what they last saw, so an edit is only fair if that is still true. Giving every spot a version and refusing an edit that was based on an old one stops quiet overwrites, and the refusal shows the current state at once.

When not to use it

Not needed when only one person builds at a time, or when the last change should simply win, such as painting a floor. For a busy creative world, a refusal each time may annoy; then queue the edits and apply them in order.

In the full entry

• What to build, step by step
• Starting values and the reason for each
• 3 common mistakes and the fix
• A diagram of every state
• 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 "Two builders place different blocks on the same spot and the world keeps neither properly" (read_entry build-on-the-same-tile) 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