Splitting documentation into several pages. Changing documentation to adapt to new "namespaces"

docs/maps/api-room.md

@@ -0,0 +1,33 @@
+{.section-title.accent.text-primary}
+# API Room functions Reference
+
+### Detecting when the user enters/leaves a zone
+
+```
+WA.room.onEnterZone(name: string, callback: () => void): void
+WA.room.onLeaveZone(name: string, callback: () => void): void
+```
+
+Listens to the position of the current user. The event is triggered when the user enters or leaves a given zone. The name of the zone is stored in the map, on a dedicated layer with the `zone` property.
+
+<div>
+    <figure class="figure">
+        <img src="https://workadventu.re/img/docs/trigger_event.png" class="figure-img img-fluid rounded" alt="" />
+        <figcaption class="figure-caption">The `zone` property, applied on a layer</figcaption>
+    </figure>
+</div>
+
+*   **name**: the name of the zone, as defined in the `zone` property.
+*   **callback**: the function that will be called when a user enters or leaves the zone.
+
+Example:
+
+```javascript
+WA.room.onEnterZone('myZone', () => {
+    WA.chat.sendChatMessage("Hello!", 'Mr Robot');
+})
+
+WA.room.onLeaveZone('myZone', () => {
+    WA.chat.sendChatMessage("Goodbye!", 'Mr Robot');
+})
+```