No products in the cart.
Simple enough for a child, powerful enough for a developer
BMM_Archive · July 15, 2026
I've created a plugin, which is compatible with both MV and MZ, that enables you to create trigger zones using a single event rather than having to duplicate a bunch of events in order to achieve the same effect, this is useful for things like map transfers, interact-able counters, and cutscene triggers. I've implemented it using the Event's note field to smuggle JSON into the plugin to be parsed with a very simple structure: JSON: {
{
"extentX": 2,
"extentY": 2,
"triggerOnce":true
}/*:
* @target MZ
* @target MV
* @plugindesc Allows events to be defined as a rectangle with extents relative to the event's tile position
* @author Phillip "Antidote" Stephens
*
* @license MIT
* @help AntiTriggerRectEvent.js
*
* This plugin enables the ability to create an arbitrary rectangle from an event's position
* the extents are defined as the total number of tiles surrounding the event.
*
* To define a rectangle simply add this following JSON struct with the extentX/extentY values changed for the desired
* rectangle to the event's notes field
*
* {"extentX":desired_width_in_tiles,"extentY":desired_height_in_tiles,"triggerOnce":desired_behavior}
*
* The following is a working example that defines a 2x2 tile strip starting from the event's x/y position,
* it also only triggers once meaning the event will activate only once
* {"extentX":2,"extentY":2,"triggerOnce":true}
*
* When calculating the rect we favor the building the rect upwards and leftwards,
* so it'll add a tile up then down, and left then right.
*
* As a visual aide this is what the above rectangle would look like:
*
* +----+----+
* | 1 | 2 |
* +----+----+
* | 3 | EV |
* +----+----+
*
*/
(() => {
`use strict`;
const _Game_Event_initialize = Game_Event.prototype.initialize;
Game_Event.prototype.initialize = function(mapId, eventId) {
_Game_Event_initialize.call(this, mapId, eventId);
this._triggerExtentY = 0;
this._triggerExtentY = 0;
this._triggered = false;
this._triggerOnce = false;
const note = $dataMap.events[eventId].note;
if (note !== "") {
let rect = JSON.parse($dataMap.events[this._eventId].note) || null;
this._triggerExtentX = rect.extentX || 0;
this._triggerExtentY = rect.extentY || 0;
this._triggerOnce = rect.triggerOnce || false;
}
}
Game_Event.prototype.pos = function(x, y) {
if (this._triggerExtentX === 0 || this._triggerExtentY === 0) {
return Game_CharacterBase.prototype.pos.call(this, x, y);
}
/**
* When calculating the rect we favor the building the rect upwards and leftwards,
* so it'll add a tile up then down, and left then right
*/
const halfExtentX1 = Math.max(0, Math.ceil((this.triggerExtentX() / 2) - .5));
const halfExtentY1 = Math.max(0, Math.ceil((this.triggerExtentY() / 2) - .5));
const halfExtentX2 = Math.max(0, Math.floor((this.triggerExtentX() / 2) - .5));
const halfExtentY2 = Math.max(0, Math.floor((this.triggerExtentY() / 2) - .5));
const startX = Math.max(0, this._x - halfExtentX1);
const startY = Math.max(0, this._y - halfExtentY1);
const endX = Math.min($gameMap.width() - 1, this._x + halfExtentX2);
const endY = Math.min($gameMap.height() - 1, this._y + halfExtentY2);
//console.log("Trigger Rect startX %i, startY %i, endX %i, endY %i, halfX1 %i, halfY1 %i, halfX2 %i, halfY2 %i", startX, startY, endX, endY, halfExtentX1, halfExtentY1, halfExtentX2, halfExtentY2);
if (this._triggered && this._triggerOnce) {
return false;
}
return (x >= startX && y >= startY && x <= endX && y <= endY);
}
const _Game_Event_start = Game_Event.prototype.start;
Game_Event.prototype.start = function() {
_Game_Event_start.call(this);
if (this.isTriggerIn([0, 1, 2])) {
this._triggered = true;
}
}
Game_Event.prototype.triggerExtentX = function() {
return this._triggerExtentX;
}
Game_Event.prototype.triggerExtentY = function() {
return this._triggerExtentY;
}
})();Log in, then follow the RPG Maker Developers Group to see these download links.
Log in to downloadI've released the code under the MIT license so you are free to use it how you wish, even commercially, just make sure to attribute me in some fashion JavaScript: /*: * @target MZ
PlayStation DualSense Wireless Controller - White
Extra DualSense controller for couch co-op, backup play, or PC and mobile sessions.
View on Amazon
Bmmplay may earn a commission from qualifying purchases made through these links.
If you are the original creator and want this listing reassigned, edited, or removed, join BMMPlay and contact the moderators with proof that matches the original RPG Maker Web profile, linked GitHub, itch.io page, or another public creator identity.
No replies yet.
Loading summary...
Bmmplay creator tools
Log in or create an account to use this creator tool.
Join the conversation
Your reaction is ready. Log in and you will return to this page to add it.
Are you sure you want to close this music player?
Community safety
