Add drag-to-orbit controls to vehicle and actor editors

Use Three.js OrbitControls in BaseRenderer for rotation-only orbiting
with damping. Vehicle editor auto-rotates and resets on part switch.
Actor editor uses orbit without auto-rotate (has skeletal animations).
Drag vs click detection uses pointermove threshold to avoid false
positives from autoRotate damping.

src/core/rendering/ActorRenderer.js

@@ -94,6 +94,9 @@ export class ActorRenderer extends BaseRenderer {
         this.camera.position.set(2, 0.8, 3.5);
         this.camera.lookAt(0, 0.2, 0);
 
+        this.setupControls(new THREE.Vector3(0, 0.2, 0));
+        this.controls.autoRotate = false;
+
         this.raycaster = new THREE.Raycaster();
     }
 
@@ -887,17 +890,13 @@ export class ActorRenderer extends BaseRenderer {
 
         if (this.mixer) {
             this.mixer.update(delta);
-        } else if (this.modelGroup) {
-            // Fallback: rotate if no animation loaded
-            this.modelGroup.rotation.y += 0.01;
         }
+        this.controls?.update();
     }
 
     dispose() {
-        this.animating = false;
         this.stopAnimation();
-        this.clearModel();
-        this.renderer?.dispose();
+        super.dispose();
         this.animationCache.clear();
     }
 }

src/core/rendering/BaseRenderer.js

@@ -1,4 +1,5 @@
 import * as THREE from 'three';
+import { OrbitControls } from 'three/addons/controls/OrbitControls.js';
 
 /**
  * Base renderer providing shared Three.js setup, lighting, texture creation,
@@ -24,6 +25,9 @@ export class BaseRenderer {
         this.renderer.setClearColor(0x000000, 0);
 
         this.setupLighting();
+
+        this.controls = null;
+        this._didDrag = false;
     }
 
     setupLighting() {
@@ -35,6 +39,39 @@ export class BaseRenderer {
         this.scene.add(sunLight);
     }
 
+    setupControls(target) {
+        this.controls = new OrbitControls(this.camera, this.canvas);
+        this.controls.enableZoom = false;
+        this.controls.enablePan = false;
+        this.controls.enableDamping = true;
+        this.controls.dampingFactor = 0.1;
+        this.controls.autoRotate = true;
+        this.controls.autoRotateSpeed = 4.0;
+        this.controls.target.copy(target);
+
+        this.controls.addEventListener('start', () => {
+            this.controls.autoRotate = false;
+        });
+
+        this._onPointerDown = (e) => {
+            this._didDrag = false;
+            this._pointerStart = { x: e.clientX, y: e.clientY };
+        };
+        this._onPointerMove = (e) => {
+            if (!this._pointerStart) return;
+            const dx = e.clientX - this._pointerStart.x;
+            const dy = e.clientY - this._pointerStart.y;
+            if (dx * dx + dy * dy > 9) this._didDrag = true;
+        };
+
+        this.canvas.addEventListener('pointerdown', this._onPointerDown);
+        this.canvas.addEventListener('pointermove', this._onPointerMove);
+    }
+
+    wasDragged() {
+        return this._didDrag;
+    }
+
     /**
      * Create a Three.js texture from parsed texture data
      */
@@ -190,9 +227,7 @@ export class BaseRenderer {
      * Called each frame before rendering.
      */
     updateAnimation() {
-        if (this.modelGroup) {
-            this.modelGroup.rotation.y += 0.01;
-        }
+        this.controls?.update();
     }
 
     resize(width, height) {
@@ -203,6 +238,11 @@ export class BaseRenderer {
 
     dispose() {
         this.animating = false;
+        if (this.controls) {
+            this.controls.dispose();
+            this.canvas.removeEventListener('pointerdown', this._onPointerDown);
+            this.canvas.removeEventListener('pointermove', this._onPointerMove);
+        }
         this.clearModel();
         this.renderer?.dispose();
     }

src/core/rendering/VehiclePartRenderer.js

@@ -14,6 +14,8 @@ export class VehiclePartRenderer extends BaseRenderer {
 
         this.camera.position.set(0, 0, 3);
         this.camera.lookAt(0, 0, 0);
+
+        this.setupControls(new THREE.Vector3(0, 0, 0));
     }
 
     /**
@@ -56,6 +58,7 @@ export class VehiclePartRenderer extends BaseRenderer {
         this.centerAndScaleModel(1.5);
 
         this.scene.add(this.modelGroup);
+        this.controls.autoRotate = true;
         this.renderer.render(this.scene, this.camera);
     }
 

src/lib/save-editor/ActorEditor.svelte

@@ -203,6 +203,7 @@
 
     function handleCanvasClick(event) {
         if (!renderer || !slot?.characters || !charState) return;
+        if (renderer.wasDragged()) return;
 
         const playerId = slot.header?.actorId;
         let acted = false;
@@ -393,10 +394,14 @@
     canvas {
         display: block;
         border-radius: 8px;
-        cursor: pointer;
+        cursor: grab;
         max-width: 100%;
     }
 
+    canvas:active {
+        cursor: grabbing;
+    }
+
     canvas:focus {
         outline: none;
     }

src/lib/save-editor/VehicleEditor.svelte

@@ -251,6 +251,7 @@
 
     function cycleColor() {
         if (!currentPart || partError) return;
+        if (renderer?.wasDragged()) return;
 
         // Find current color index and cycle to next
         const currentIdx = LegoColorNames.indexOf(currentColorValue);
@@ -398,10 +399,14 @@
     canvas {
         display: block;
         border-radius: 8px;
-        cursor: pointer;
+        cursor: grab;
         max-width: 100%;
     }
 
+    canvas:active {
+        cursor: grabbing;
+    }
+
     canvas:focus {
         outline: none;
     }