Logic tutorials

Four small lessons, one screen each. Download the tutorial project, import it (Projects → Import) and open each button's Logic tab as you read.

1. A dialogue box

A dialogue box is a group that's hidden when the menu opens. One button shows it; its Close button hides it again.

A dialogue box over a menu — The finished dialogue, open over the menu.

Put it in a group. Select its parts — a dark full-screen rectangle behind, the panel, the texts and the Close button — and press Ctrl+G. Rename the group (F2) to something you'll recognise: here, dialog.

Hide it when the screen opens. Click the eye on the group's row (or right-click it → Hide when the screen opens). The group and everything in it start hidden.

The dialog row with its eye shut, its rows dimmed

Show it from a button. Select the button that opens it and open the Logic tab. Press Add (Shift+A) and pick Show / hide.

Connect When pressed to it, set Element to the group and Make it to Shown.

When pressed, then Show / hide: dialog, Shown — The WELCOME button.

Hide it from Close. The same on the Close button, with Make it set to Hidden.

When pressed, then Show / hide: dialog, Hidden — The CLOSE button.

2. Two panels that take turns

Two buttons, two panels — each panel a group. Each button shows its own panel and hides the other: two Show / hide nodes in a row. The RULES panel is hidden when the screen opens.

An About menu with INFO and RULES buttons

Show the info panel, then hide the rules panel — The INFO button, after When pressed. RULES is its mirror image.

For more than a few pages, a Tab view does this for you.

3. A buy button that checks money

An If checks the player's money before anything is taken. This needs Vault and an economy plugin.

Add the check. Put an If after When pressed and click + Condition. Choose Money, keep the currency on Money · Vault, pick is at least (≥) and type the price.

The condition editor: Money, is at least 100

Wire both answers. True goes to a Money node that takes the price. False goes to a Send message that says what's missing. The If has already checked, so Money's Not enough can stay unconnected.

If: True to Money, take 100; False to a message

Give the item. After Money's Done, a Run command run as Console:

minecraft:give %player% diamond 1

Money, then Run command: give the player a diamond

Values in textType % in a text field and pick a value — Player name, Money, a variable. It shows as a pill and is filled in for each player.

4. "Are you sure?" before buying

Lessons 1 and 3 together. BUY shows a confirm dialogue; NO hides it; YES hides it and runs the money check.

A Buy a diamond? dialogue with YES and NO

YES: Show / hide (confirm dialog, Hidden), then the If from lesson 3 and everything after it.

Hide the dialogue, then the money check — The YES button, after When pressed.

BUY: When pressed → Show / hide (confirm dialog, Shown). NO: Show / hide (confirm dialog, Hidden).