Snap to grid

Author: rgantzos

features/features.json

@@ -1,4 +1,9 @@
 [
+  {
+    "version": 2,
+    "id": "snap-to-grid",
+    "versionAdded": "v4.0.0"
+  },
   {
     "version": 2,
     "id": "select-self",

features/snap-to-grid/data.json

@@ -0,0 +1,22 @@
+{
+    "title": "Snap Scripts to Grid",
+    "description": "Automatically aligns scripts to the dotted grid in the editor when placed.",
+    "credits": [
+        {
+            "username": "rgantzos",
+            "url": "https://scratch.mit.edu/users/rgantzos/"
+        }
+    ],
+    "type": [
+        "Editor"
+    ],
+    "tags": [
+        "New"
+    ],
+    "scripts": [
+        {
+            "file": "script.js",
+            "runOn": "/projects/*"
+        }
+    ]
+}

features/snap-to-grid/script.js

@@ -0,0 +1,12 @@
+export default async function ({ feature, console }) {
+    await ScratchTools.waitForElement("div.gui")
+    update()
+    
+    feature.traps.vm.on("workspaceUpdate", function() {
+        update()
+    })
+
+    function update() {
+        Blockly.getMainWorkspace().grid_.snapToGrid_ = feature.self.enabled
+    }
+}