[Community] [Curved movement] Add expressions for the origin position of a speed-based movement (#936)

Author: D8H

extensions/community/CurvedMovement.json

@@ -8,7 +8,7 @@
   "name": "CurvedMovement",
   "previewIconUrl": "https://resources.gdevelop-app.com/assets/Icons/Line Hero Pack/Master/SVG/Graphic Design/Graphic Design_bezier_curve.svg",
   "shortDescription": "Move objects on curved paths.",
-  "version": "1.0.3",
+  "version": "1.0.4",
   "description": [
     "This extension allows to move objects on Bézier curve paths.",
     "- Paths can be built dynamically or from predetermined paths in SVG format.",
@@ -20,7 +20,11 @@
     "- Move enemies that follow a pattern",
     "- Animate decorations",
     "",
-    "A collection of [small examples](https://editor.gdevelop.io/?project=example://curved-movement) show how to use this extension."
+    "A collection of [small examples](https://editor.gdevelop.io/?project=example://curved-movement) shows how to use this extension.",
+    "",
+    "2 examples use it:",
+    "- a 3D racing game ([open the project online](https://editor.gdevelop.io/?project=example://3d-racing-game))",
+    "- a Zuma-like ([open the project online](https://editor.gdevelop.io/?project=example://smoothy))"
   ],
   "origin": {
     "identifier": "CurvedMovement",
@@ -7499,6 +7503,88 @@
             }
           ],
           "objectGroups": []
+        },
+        {
+          "description": "Return the path origin on X axis of the object.",
+          "fullName": "Path origin X",
+          "functionType": "Expression",
+          "group": "Movement on a curve (speed-based) configuration",
+          "name": "PathOriginX",
+          "sentence": "the path origin on X axis",
+          "events": [
+            {
+              "type": "BuiltinCommonInstructions::Standard",
+              "conditions": [],
+              "actions": [
+                {
+                  "type": {
+                    "value": "SetReturnNumber"
+                  },
+                  "parameters": [
+                    "Object.Behavior::PropertyPathOriginX()"
+                  ]
+                }
+              ]
+            }
+          ],
+          "expressionType": {
+            "type": "expression"
+          },
+          "parameters": [
+            {
+              "description": "Object",
+              "name": "Object",
+              "type": "object"
+            },
+            {
+              "description": "Behavior",
+              "name": "Behavior",
+              "supplementaryInformation": "CurvedMovement::SpeedPathMovement",
+              "type": "behavior"
+            }
+          ],
+          "objectGroups": []
+        },
+        {
+          "description": "Return the path origin on Y axis of the object.",
+          "fullName": "Path origin Y",
+          "functionType": "Expression",
+          "group": "Movement on a curve (speed-based) configuration",
+          "name": "PathOriginY",
+          "sentence": "the path origin on Y axis",
+          "events": [
+            {
+              "type": "BuiltinCommonInstructions::Standard",
+              "conditions": [],
+              "actions": [
+                {
+                  "type": {
+                    "value": "SetReturnNumber"
+                  },
+                  "parameters": [
+                    "Object.Behavior::PropertyPathOriginY()"
+                  ]
+                }
+              ]
+            }
+          ],
+          "expressionType": {
+            "type": "expression"
+          },
+          "parameters": [
+            {
+              "description": "Object",
+              "name": "Object",
+              "type": "object"
+            },
+            {
+              "description": "Behavior",
+              "name": "Behavior",
+              "supplementaryInformation": "CurvedMovement::SpeedPathMovement",
+              "type": "behavior"
+            }
+          ],
+          "objectGroups": []
         }
       ],
       "propertyDescriptors": [