Fix AnimationPlaybackTrack seeking behavior overall

Co-authored-by: jsjtxietian <[email protected]>
Co-authored-by: Miguel0312 <[email protected]>
Co-authored-by: BruceLiCong <[email protected]>

scene/animation/animation_mixer.cpp

@@ -1596,7 +1596,7 @@ void AnimationMixer::_blend_process(double p_delta, bool p_update_only) {
 					}
 				} break;
 				case Animation::TYPE_ANIMATION: {
-					if (p_update_only || Math::is_zero_approx(blend)) {
+					if (Math::is_zero_approx(blend)) {
 						continue;
 					}
 					TrackCacheAnimation *t = static_cast<TrackCacheAnimation *>(track);
@@ -1623,10 +1623,10 @@ void AnimationMixer::_blend_process(double p_delta, bool p_update_only) {
 						double at_anim_pos = 0.0;
 						switch (anim->get_loop_mode()) {
 							case Animation::LOOP_NONE: {
-								at_anim_pos = MAX((double)anim->get_length(), time - pos); //seek to end
+								at_anim_pos = MIN((double)anim->get_length(), time - pos); // Seek to end.
 							} break;
 							case Animation::LOOP_LINEAR: {
-								at_anim_pos = Math::fposmod(time - pos, (double)anim->get_length()); //seek to loop
+								at_anim_pos = Math::fposmod(time - pos, (double)anim->get_length()); // Seek to loop.
 							} break;
 							case Animation::LOOP_PINGPONG: {
 								at_anim_pos = Math::pingpong(time - pos, (double)a->get_length());
@@ -1634,14 +1634,14 @@ void AnimationMixer::_blend_process(double p_delta, bool p_update_only) {
 							default:
 								break;
 						}
-						if (player2->is_playing() || seeked) {
-							player2->seek(at_anim_pos);
+						if (player2->is_playing()) {
+							player2->seek(at_anim_pos, false, p_update_only);
 							player2->play(anim_name);
 							t->playing = true;
 							playing_caches.insert(t);
 						} else {
 							player2->set_assigned_animation(anim_name);
-							player2->seek(at_anim_pos, true);
+							player2->seek(at_anim_pos, true, p_update_only);
 						}
 					} else {
 						// Find stuff to play.