From 3f10550c28e1bc893287adee53ec3bc7cd401ad8 Mon Sep 17 00:00:00 2001
From: Tobias Jansing <tobias.jansing@innogames.com>
Date: Mon, 19 Feb 2024 13:19:04 +0100
Subject: [PATCH] Supporting properties for motion path actuactors. Also adding
 the startsAt property so we can start animations at a certain progress.

---
 src/motion/actuators/MotionPathActuator.hx | 36 +++++++++++++++-------
 src/motion/actuators/SimpleActuator.hx     |  5 +++
 2 files changed, 30 insertions(+), 11 deletions(-)

diff --git a/src/motion/actuators/MotionPathActuator.hx b/src/motion/actuators/MotionPathActuator.hx
index a76589b..8438ea7 100644
--- a/src/motion/actuators/MotionPathActuator.hx
+++ b/src/motion/actuators/MotionPathActuator.hx
@@ -18,24 +18,38 @@ class MotionPathActuator<T> extends SimpleActuator<T, T> {
 	}
 
 	private override function initialize() {
+		super.initialize();
+
+		// "x" and "y" are handled by `super.initialize()`, but there's custom behavior for those properties below,
+		// so we need to remove the details and rebuild them.
+		propertyDetails = [
+			for (detail in propertyDetails) {
+				if (detail.propertyName == "x" || detail.propertyName == "y") continue;
+				detail;
+			}
+		];
+		detailsLength = propertyDetails.length;
+
 		var details:PropertyPathDetails<T>;
 		var path:IComponentPath;
 
 		for (propertyName in Reflect.fields(properties)) {
-			path = cast(Reflect.field(properties, propertyName), IComponentPath);
+			if (propertyName == "x" || propertyName == "y") {
+				path = cast(Reflect.field(properties, propertyName), IComponentPath);
 
-			if (path != null) {
-				var isField = true;
+				if (path != null) {
+					var isField = true;
 
-				if (Reflect.hasField(target, propertyName)) {
-					path.start = Reflect.field(target, propertyName);
-				} else {
-					isField = false;
-					path.start = Reflect.getProperty(target, propertyName);
-				}
+					if (Reflect.hasField(target, propertyName)) {
+						path.start = Reflect.field(target, propertyName);
+					} else {
+						isField = false;
+						path.start = Reflect.getProperty(target, propertyName);
+					}
 
-				details = new PropertyPathDetails(target, propertyName, path, isField);
-				propertyDetails.push(details);
+					details = new PropertyPathDetails(target, propertyName, path, isField);
+					propertyDetails.push(details);
+				}
 			}
 		}
 
diff --git a/src/motion/actuators/SimpleActuator.hx b/src/motion/actuators/SimpleActuator.hx
index 808fd04..14070ff 100644
--- a/src/motion/actuators/SimpleActuator.hx
+++ b/src/motion/actuators/SimpleActuator.hx
@@ -352,6 +352,11 @@ class SimpleActuator<T, U> extends GenericActuator<T> {
 
 			tweenPosition = (currentTime - timeOffset) / duration;
 
+			var startAt = getField(properties, "startAt");
+			if (startAt != null) {
+				tweenPosition += startAt;
+			}
+
 			if (tweenPosition > 1) {
 				tweenPosition = 1;
 			}