Fix animation before first key
Prior to this, the value assumed for the interval between the start of the track and the first frame would be the one of the first key if - *seeking/playing a continuous track*; - *seeking a discrete track*. And the first key would be ignored until reached -thus not modifying the target property/transform- in the remaining case; namely, *playing a discrete track*. In other words, the inner workings of the animation system considered the unreached first key for interpolation but not for a query of every key inside a time range. With this changes, the first key is only considered is the animation is looped and ignored otherwise. That way, in order to have a start value, you'll need an explicit key at the very beginning of the track, while having the flexibility of the animation player not touching the target value until the first key is reached. This corresponds to the point 1) of #10752.
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@ -405,6 +405,10 @@ void AnimationPlayer::_animation_process_animation(AnimationData *p_anim, float
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if (a->value_track_get_update_mode(i) == Animation::UPDATE_CONTINUOUS || (p_delta == 0 && a->value_track_get_update_mode(i) == Animation::UPDATE_DISCRETE)) { //delta == 0 means seek
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Variant value = a->value_track_interpolate(i, p_time);
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if (value == Variant())
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continue;
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//thanks to trigger mode, this should be solved now..
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/*
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if (p_delta==0 && value.get_type()==Variant::STRING)
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@ -1171,9 +1171,7 @@ T Animation::_interpolate(const Vector<TKey<T> > &p_keys, float p_time, Interpol
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ERR_FAIL_COND_V(idx == -2, T());
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if (p_ok)
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*p_ok = true;
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bool result = true;
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int next = 0;
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float c = 0;
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// prepare for all cases of interpolation
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@ -1243,10 +1241,19 @@ T Animation::_interpolate(const Vector<TKey<T> > &p_keys, float p_time, Interpol
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} else if (idx < 0) {
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idx = next = 0;
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// only allow extending first key to anim start if looping
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if (loop)
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idx = next = 0;
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else
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result = false;
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}
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}
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if (p_ok)
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*p_ok = result;
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if (!result)
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return T();
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float tr = p_keys[idx].transition;
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if (tr == 0 || idx == next) {
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@ -1298,7 +1305,7 @@ Error Animation::transform_track_interpolate(int p_track, float p_time, Vector3
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TransformKey tk = _interpolate(tt->transforms, p_time, tt->interpolation, tt->loop_wrap, &ok);
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if (!ok) // ??
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if (!ok)
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return ERR_UNAVAILABLE;
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if (r_loc)
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