From f3895e7a676970d3ff589a6c236996d98f1da356 Mon Sep 17 00:00:00 2001
From: Silc 'Tokage' Renew <tokage.it.lab@gmail.com>
Date: Sun, 20 Feb 2022 15:43:22 +0900
Subject: Fixed cubic interpolate with loop

---
 scene/resources/animation.cpp | 14 +++++++++++---
 1 file changed, 11 insertions(+), 3 deletions(-)

(limited to 'scene/resources/animation.cpp')

diff --git a/scene/resources/animation.cpp b/scene/resources/animation.cpp
index bc533ff022..312a557602 100644
--- a/scene/resources/animation.cpp
+++ b/scene/resources/animation.cpp
@@ -2413,7 +2413,7 @@ T Animation::_interpolate(const Vector<TKey<T>> &p_keys, double p_time, Interpol
 	real_t c = 0.0;
 	// prepare for all cases of interpolation
 
-	if ((loop_mode == LOOP_LINEAR || loop_mode == LOOP_PINGPONG) && p_loop_wrap) {
+	if (loop_mode == LOOP_LINEAR && p_loop_wrap) {
 		// loop
 		if (!p_backward) {
 			// no backward
@@ -2567,11 +2567,19 @@ T Animation::_interpolate(const Vector<TKey<T>> &p_keys, double p_time, Interpol
 		case INTERPOLATION_CUBIC: {
 			int pre = idx - 1;
 			if (pre < 0) {
-				pre = 0;
+				if (loop_mode == LOOP_LINEAR && p_loop_wrap) {
+					pre = len - 1;
+				} else {
+					pre = 0;
+				}
 			}
 			int post = next + 1;
 			if (post >= len) {
-				post = next;
+				if (loop_mode == LOOP_LINEAR && p_loop_wrap) {
+					post = 0;
+				} else {
+					post = next;
+				}
 			}
 
 			return _cubic_interpolate(p_keys[pre].value, p_keys[idx].value, p_keys[next].value, p_keys[post].value, c);
-- 
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