diff --git a/libopenage/curve/CMakeLists.txt b/libopenage/curve/CMakeLists.txt
index 63a7a12c00..0b800ced83 100644
--- a/libopenage/curve/CMakeLists.txt
+++ b/libopenage/curve/CMakeLists.txt
@@ -1,4 +1,5 @@
 add_sources(libopenage
+	array.cpp
 	base_curve.cpp
 	continuous.cpp
 	discrete.cpp
@@ -12,7 +13,6 @@ add_sources(libopenage
 	queue.cpp
 	queue_filter_iterator.cpp
 	segmented.cpp
-	array.cpp
 )
 
 add_subdirectory("tests")
diff --git a/libopenage/curve/array.cpp b/libopenage/curve/array.cpp
index 23c60bf154..51f53eb9cf 100644
--- a/libopenage/curve/array.cpp
+++ b/libopenage/curve/array.cpp
@@ -1,4 +1,4 @@
-// Copyright 2017-2024 the openage authors. See copying.md for legal info.
+// Copyright 2024-2024 the openage authors. See copying.md for legal info.
 
 
 #include "array.h"
diff --git a/libopenage/curve/array.h b/libopenage/curve/array.h
index 417317a9d2..1f5b1364d0 100644
--- a/libopenage/curve/array.h
+++ b/libopenage/curve/array.h
@@ -1,4 +1,4 @@
-// Copyright 2017-2024 the openage authors. See copying.md for legal info.
+// Copyright 2024-2024 the openage authors. See copying.md for legal info.
 
 #pragma once
 
@@ -15,9 +15,6 @@ namespace curve {
 template <typename T, size_t Size>
 class Array {
 public:
-	using container_t = std::array<KeyframeContainer<T>, Size>;
-
-
 	Array() = default;
 
 	// prevent accidental copy of queue
@@ -30,12 +27,12 @@ class Array {
 	std::array<T, Size> get_all(const time::time_t &t) const;
 
 
-	size_t size() const;
+	consteval size_t size() const;
 
-	const Keyframe<T> &frame(const time::time_t &t, const size_t index) const;
+	std::pair<time::time_t, T> frame(const time::time_t &t, const size_t index) const;
 
 
-	const Keyframe<T> &next_frame(const time::time_t &t, const size_t index) const;
+	std::pair<time::time_t, T> next_frame(const time::time_t &t, const size_t index) const;
 
 	void set_insert(const time::time_t &t, const size_t index, T value);
 
@@ -52,7 +49,7 @@ class Array {
 			curve(curve), time(time), offset(offset) {};
 
 		const T &operator*() {
-			return curve->frame(this->time, this->offset).value;
+			return curve->frame(this->time, this->offset).second;
 		}
 
 		void operator++() {
@@ -77,26 +74,28 @@ class Array {
 
 
 private:
-	container_t container;
+	std::array<KeyframeContainer<T>, Size> container;
+
+	//hint for KeyframeContainer operations
 	mutable size_t last_hit_index = 0;
 };
 
 
 template <typename T, size_t Size>
-const Keyframe<T> &Array<T, Size>::frame(const time::time_t &t, const size_t index) const {
+std::pair<time::time_t, T> Array<T, Size>::frame(const time::time_t &t, const size_t index) const {
 	this->last_hit_index = container[index].last(t, this->last_hit_index);
-	return container[index].get(this->last_hit_index);
+	return container[index].get(this->last_hit_index).make_pair();
 }
 
 template <typename T, size_t Size>
-const Keyframe<T> &Array<T, Size>::next_frame(const time::time_t &t, const size_t index) const {
+std::pair<time::time_t, T> Array<T, Size>::next_frame(const time::time_t &t, const size_t index) const {
 	this->last_hit_index = container[index].last(t, this->last_hit_index);
 	return container[index].get(this->last_hit_index + 1);
 }
 
 template <typename T, size_t Size>
 T Array<T, Size>::get(const time::time_t &t, const size_t index) const {
-	return this->frame(t, index).value;
+	return this->frame(t, index).second;
 }
 
 template <typename T, size_t Size>
@@ -107,7 +106,7 @@ std::array<T, Size> Array<T, Size>::get_all(const time::time_t &t) const {
 }
 
 template <typename T, size_t Size>
-size_t Array<T, Size>::size() const {
+consteval size_t Array<T, Size>::size() const {
 	return Size;
 }
 
@@ -133,7 +132,7 @@ void Array<T, Size>::set_replace(const time::time_t &t, const size_t index, T va
 template <typename T, size_t Size>
 void Array<T, Size>::sync(const Array<T, Size> &other, const time::time_t &start) {
 	for (int i = 0; i < Size; i++) {
-		this->container[i].sync(other, start);
+		this->container[i].sync(other[i], start);
 	}
 }
 
diff --git a/libopenage/curve/keyframe.h b/libopenage/curve/keyframe.h
index e868783cbb..a34b0c6262 100644
--- a/libopenage/curve/keyframe.h
+++ b/libopenage/curve/keyframe.h
@@ -54,6 +54,15 @@ class Keyframe {
 		return this->value;
 	}
 
+	/**
+	 * Get the value and timestamp of the keyframe in form of std::pair<time, value>
+	 * @return keyframe pair
+	 */
+	std::pair<time::time_t, T> make_pair() const
+	{
+		return {time(), val()};
+	}
+
 public:
 	/**
 	 * Value of the keyframe.
diff --git a/libopenage/curve/keyframe_container.h b/libopenage/curve/keyframe_container.h
index d9bb9a0bbd..8434942058 100644
--- a/libopenage/curve/keyframe_container.h
+++ b/libopenage/curve/keyframe_container.h
@@ -279,8 +279,6 @@ class KeyframeContainer {
 	 * Replaces all keyframes beginning at t >= start with keyframes from \p other.
 	 *
 	 * @param other Curve that keyframes are copied from.
-	 * @param converter Function that converts the value type of \p other to the
-	 *                  value type of \p this.
 	 * @param start Start time at which keyframes are replaced (default = -INF).
 	 *              Using the default value replaces ALL keyframes of \p this with
 	 *              the keyframes of \p other.