1.2 update w/ GZDoom 4.9 features:

- Changeable player skins.
 - Ammo LEDs are now 1:1 with UT by using canvas textures.
 - Integrate some add-ons, including reskins.
 - Various fixes (some backported from Demolitionist).
 - Migrated from libeye to Gutamatics.

zscript/dt_Gutamatics/VectorUtil.zsc

@@ -0,0 +1,29 @@
+class dt_GM_VectorUtil {
+	/// Linearly interpolates between two Vector3s, clamping the parameters.
+	static Vector3 lerpVec3(Vector3 from, Vector3 to, double time) {
+		time = clamp(time, 0, 1);
+		return lerpUnclampedVec3(from, to, time);
+	}
+
+	/// Linearly interpolates between two Vector3s.
+	static Vector3 lerpUnclampedVec3(Vector3 from, Vector3 to, double time) {
+		Vector3 ret;
+		double reverseTime = 1 - time;
+		ret = reverseTime * from + time * to;
+		return ret;
+	}
+
+	/// Linearly interpolates between two Vector2s, clamping the parameters.
+	static Vector2 lerpVec2(Vector2 from, Vector2 to, double time) {
+		time = clamp(time, 0, 1);
+		return lerpUnclampedVec2(from, to, time);
+	}
+
+	/// Linearly interpolates between two Vector2s.
+	static Vector2 lerpUnclampedVec2(Vector2 from, Vector2 to, double time) {
+		Vector2 ret;
+		double reverseTime = 1 - time;
+		ret = reverseTime * from + time * to;
+		return ret;
+	}
+}