Add xr-active-switch.ts

Author: NSTCG

xr-active-switch.ts

@@ -0,0 +1,106 @@
+import {Component, Object3D} from '@wonderlandengine/api';
+import {property} from '@wonderlandengine/api/decorators.js';
+
+const SCOPE_OPTIONS = ['this object', 'children only', 'this object & children'];
+const ACTION_OPTIONS = ['activate', 'deactivate', 'toggle', 'keep'];
+
+/**
+ * XR Active Switch Component for controlling component activation states
+ * based on XR session status.
+ *
+ * This component allows toggling, activating, deactivating, or keeping the
+ * current state of components when entering or exiting XR sessions.
+ *
+ * The scope of affected components can be limited to the current object,
+ * its children, or both.
+ *
+ * Use this component to manage visibility, interactivity, or other properties
+ * that depend on XR session states.
+ *
+ */
+
+export class XrActiveSwitch extends Component {
+    static TypeName = 'xr-active-switch';
+
+    /** Action to perform when XR session starts */
+    @property.enum(ACTION_OPTIONS)
+    ifInXR: number = 0;
+
+    /** Action to perform when XR session ends */
+    @property.enum(ACTION_OPTIONS)
+    ifNotInXR: number = 1;
+
+    /** Scope of elements to affect */
+    @property.enum(SCOPE_OPTIONS)
+    scope: number = 2;
+
+    private components: Component[] = [];
+
+    start() {
+        // Initial state setup
+        this.applyAction(this.engine.xr?.session ? this.ifInXR : this.ifNotInXR);
+
+        // Bind event handlers
+        this.engine.onXRSessionStart.add(this.onSessionStart);
+        this.engine.onXRSessionEnd.add(this.onSessionEnd);
+    }
+
+    onActivate() {
+        this.engine.onXRSessionStart.add(this.onSessionStart);
+        this.engine.onXRSessionEnd.add(this.onSessionEnd);
+    }
+
+    onDeactivate() {
+        this.engine.onXRSessionStart.remove(this.onSessionStart);
+        this.engine.onXRSessionEnd.remove(this.onSessionEnd);
+    }
+
+    private collectComponents() {
+        const mode = this.scope;
+
+        // Handle current object
+        if (mode === 0 || mode === 2) {
+            this.object
+                .getComponents()
+                .filter((c) => c.type !== XrActiveSwitch.TypeName)
+                .forEach((c) => this.components.push(c));
+        }
+
+        // Handle children
+        if (mode === 1 || mode === 2) {
+            this.processChildren(this.object);
+        }
+    }
+
+    private processChildren(obj: Object3D) {
+        for (const child of obj.children) {
+            child
+                .getComponents()
+                .filter((c) => c.type !== XrActiveSwitch.TypeName)
+                .forEach((c) => this.components.push(c));
+            this.processChildren(child); // Recurse through all descendants
+        }
+    }
+
+    private applyAction(action: number) {
+        this.components = [];
+        this.collectComponents();
+        for (const comp of this.components) {
+            if (action === 0) {
+                comp.active = true;
+            } else if (action === 1) {
+                comp.active = false;
+            } else if (action === 2) {
+                comp.active = !comp.active;
+            }
+        }
+    }
+
+    private onSessionStart = () => {
+        this.applyAction(this.ifInXR);
+    };
+
+    private onSessionEnd = () => {
+        this.applyAction(this.ifNotInXR);
+    };
+}