feat(targets/sprites): comment in constructor for targets +sprite duplicate method

Author: Victor-Crawshaw

src/engine/target.js

@@ -20,9 +20,10 @@ class Target extends EventEmitter {
     /**
      * @param {Runtime} runtime Reference to the runtime.
      * @param {?Blocks} blocks Blocks instance for the blocks owned by this target.
+     * @param {?Object.<string, *>} comments Array of comments owned by this target.
      * @constructor
      */
-    constructor (runtime, blocks) {
+    constructor (runtime, blocks, comments) {
         super();
 
         if (!blocks) {
@@ -55,7 +56,7 @@ class Target extends EventEmitter {
          * Key is the comment id.
          * @type {Object.<string,*>}
          */
-        this.comments = {};
+        this.comments = comments || {};
         /**
          * Dictionary of custom state for this target.
          * This can be used to store target-specific custom state for blocks which need it.

src/sprites/rendered-target.js

@@ -15,7 +15,7 @@ class RenderedTarget extends Target {
      * @constructor
      */
     constructor (sprite, runtime) {
-        super(runtime, sprite.blocks);
+        super(runtime, sprite.blocks, sprite.comments);
 
         /**
          * Reference to the sprite that this is a render of.

src/sprites/sprite.js

@@ -54,6 +54,12 @@ class Sprite {
         if (this.runtime && this.runtime.audioEngine) {
             this.soundBank = this.runtime.audioEngine.createBank();
         }
+        /**
+         * Dictionary of comments for this target.
+         * Key is the comment id.
+         * @type {Object.<string.*>}
+         */
+        this.comments = {};
     }
 
     /**
@@ -145,7 +151,11 @@ class Sprite {
             newSprite.blocks.createBlock(block);
         });
 
-
+        Object.keys(this.comments).forEach(commentId => {
+            const newComment = this.comments[commentId];
+            newSprite.comments[newComment.id] = newComment;
+        });
+         
         const allNames = this.runtime.targets.map(t => t.sprite.name);
         newSprite.name = StringUtil.unusedName(this.name, allNames);