raise walls so they dont clip the ground

src/components/wall.js

@@ -1,24 +1,27 @@
 import {BEAT_WARMUP_OFFSET, BEAT_WARMUP_SPEED, BEAT_WARMUP_TIME} from '../constants/beat';
 
+// So wall does not clip the stage ground.
+const RAISE_Y_OFFSET = 0.1;
+
 /**
- * Wall speed and haptics.
+ * Wall to dodge.
  */
 AFRAME.registerComponent('wall', {
   schema: {
     anticipationPosition: {default: 0},
     durationSeconds: {default: 0},
+    height: {default: 1.3},
     horizontalPosition: {default: 'middleleft', oneOf: ['left', 'middleleft', 'middleright', 'right']},
     speed: {default: 1.0},
     warmupPosition: {default: 0},
-    height: {default: 1.3},
     width: {default: 1}
   },
 
   horizontalPositions: {
-    'left': -0.75,
-    'middleleft': -0.25,
-    'middleright': 0.25,
-    'right': 0.75
+    left: -0.75,
+    middleleft: -0.25,
+    middleright: 0.25,
+    right: 0.75
   },
 
   init: function () {
@@ -30,7 +33,7 @@ AFRAME.registerComponent('wall', {
     const data = this.data;
     el.object3D.position.set(
       this.horizontalPositions[data.horizontalPosition],
-      data.height,
+      data.height + RAISE_Y_OFFSET,
       data.anticipationPosition + data.warmupPosition + data.durationSeconds * data.speed / 2
     );
     el.object3D.scale.set(data.width * 0.30, 2.5, data.durationSeconds * data.speed);