AnimationTreePlayer filters improved

[m4nu3lf]

Now the AnimationTreePlayer filters for Blend2 and OneShot nodes
behave as expected, that is the main animation is not affected by
the secondary animation if the track is filterd out, for arbitarily
complex trees.

[akien-mga]

It seems to fail building with gcc/mingw:

scene/animation/animation_tree_player.cpp: In member function 'void AnimationTreePlayer::_process_animation(float)':

scene/animation/animation_tree_player.cpp:901:14: error: 'class Animation' has no member named 'value_track_is_continuous'

[m4nu3lf]

Fixed but... Can't understand why that line has changed (or better hasn't changed) when I rebased my branch. I've got no collision and I am pretty sure I didn't change that line

[TheoXD]

Seems to be helping thanks! I had a soldier with a gun, and two blend2 nodes setup for aiming (one to blending from transition with walk cycle to aiming, overriding upper body) Second is for looking up and comes after, what happened was that my character stopped walking and lower body blended into idle (still aiming upwards though) so rather than walking and aiming up it was standing and aiming up. Your PR seems to have fixed the problem without me doing anything 👍

[m4nu3lf]

@TheoXD That is exactly the same problem I had. The whole filter functionality was substantially broken. Hopefully this will make into the official repo.