Improved MiscGroups transforms

*Improved the way how MiscGroups apply transforms to their children

src/model/misc-group.js

@@ -1,8 +1,10 @@
 import Vector3 from "./vector3";
+import Quaternion from "./quaternion";
 
 export default class MiscGroup {
     pos;
     rot;
+    quaternion;
 
     constructor(pos, rot) {
         this.pos = pos;
@@ -18,4 +20,12 @@ export default class MiscGroup {
 
         return object;
     }
+
+    getQuaternion() {
+        if (!this.quaternion) {
+            this.quaternion = Quaternion.fromEulerAngles(this.rot.multiply(Math.PI / 180));
+        }
+        
+        return this.quaternion;
+    }
 }

src/model/misc/misc.js

@@ -1,4 +1,3 @@
-import AngleHelper from "../../helpers/angleHelper";
 import SceneryObject from "../scenery-object";
 import Vector3 from "../vector3";
 
@@ -13,7 +12,7 @@ export default class Misc extends SceneryObject {
         Object.assign(this, {
             misc_id,
             prefab_name,
-            name,
+            name
         });
     }
 
@@ -35,19 +34,15 @@ export default class Misc extends SceneryObject {
         return object;
     }
 
-    static applyGroupTransforms(pos, rot, miscGroups) {
-        if(!miscGroups) return [ pos, rot ];
+    static applyGroupTransforms(localPos, localRot, miscGroups) {
+        let worldPos = localPos.clone();
+        let worldRot = localRot.clone();
       
         for (const group of miscGroups) {
-            const rotRad = AngleHelper.degToRad(group.rot.y);
-            const rotRadY = new Vector3(0, rotRad, 0);
-            pos = pos.rotate(rotRadY).add(group.pos);
-            rot = rot.add(group.rot); 
-            // TODO: Replace this with some fancy quaternion math maybe
+            worldPos = group.getQuaternion().rotateVector(worldPos).add(group.pos);
+            worldRot = worldRot.add(group.rot);
         }
       
-        rot = AngleHelper.normalizeDegVector(rot);
-
-        return [ pos, rot ];
+        return [ worldPos, worldRot ];
     }
 }

src/model/scenery-parser.js

@@ -115,11 +115,11 @@ export default class SceneryParser {
                 return MainCamera.fromText(text);
             case 'MiscGroup':
                 const group = MiscGroup.fromText(text);
-                currentMiscGroups.push(group);
+                currentMiscGroups.unshift(group);
 
                 return null;
             case 'EndMiscGroup':
-                if(!currentMiscGroups.pop()) {
+                if(!currentMiscGroups.shift()) {
                     SceneryParserLog.warn('endMiscGroupWithoutStart', 'Unexpected EndMiscGroup found without a preceding MiscGroup');
                 }