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Blend out of anim slots when stopped.

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This commit is contained in:
Chandler Cox
2024-08-09 09:05:53 -05:00
parent 0b03a5da0d
commit 830db22dcc
2 changed files with 58 additions and 9 deletions
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65
Source/Engine/Animations/Graph/AnimGroup.Animation.cpp
View File

@@ -2237,8 +2237,9 @@ void AnimGraphExecutor::ProcessGroupAnimation(Box* boxBase, Node* nodeBase, Valu
{
// Start playing animation
bucket.Index = i;
bucket.TimePosition = 0.0f;
bucket.BlendInPosition = 0.0f;
// Keep bucket time position and blend in time for if blending between two anims in the same slot.
bucket.TimePosition = bucket.TimePosition;
bucket.BlendInPosition = bucket.BlendInPosition;
bucket.BlendOutPosition = 0.0f;
bucket.LoopsDone = 0;
bucket.LoopsLeft = slot.LoopCount;
@@ -2248,6 +2249,12 @@ void AnimGraphExecutor::ProcessGroupAnimation(Box* boxBase, Node* nodeBase, Valu
if (bucket.Index == -1 || !slots[bucket.Index].Animation->IsLoaded())
{
value = tryGetValue(node->GetBox(1), Value::Null);
// Reset times if time is left over from playing between different anims in the same slot.
if (bucket.BlendInPosition > 0)
{
bucket.TimePosition = 0;
bucket.BlendInPosition = 0;
}
return;
}
}
@@ -2256,12 +2263,6 @@ void AnimGraphExecutor::ProcessGroupAnimation(Box* boxBase, Node* nodeBase, Valu
auto& slot = slots[bucket.Index];
Animation* anim = slot.Animation;
ASSERT(slot.Animation && slot.Animation->IsLoaded());
if (slot.Reset)
{
// Start from the begining
slot.Reset = false;
bucket.TimePosition = 0.0f;
}
const float deltaTime = slot.Pause ? 0.0f : context.DeltaTime * slot.Speed;
const float length = anim->GetLength();
const bool loop = bucket.LoopsLeft != 0;
@@ -2285,6 +2286,54 @@ void AnimGraphExecutor::ProcessGroupAnimation(Box* boxBase, Node* nodeBase, Valu
// Speed is accounted for in the new time pos, so keep sample speed at 1
value = SampleAnimation(node, loop, length, 0.0f, bucket.TimePosition, newTimePos, anim, 1);
bucket.TimePosition = newTimePos;
// On animation slot stop
if (slot.Reset)
{
// Blend between last anim and new anim if found, otherwise blend back to input.
Animation* sAnim = nullptr;
for (int32 i = 0; i < slots.Count(); i++)
{
auto& s = slots[i];
if (s.Animation && s.Name == slotName && s.Animation != slot.Animation)
{
sAnim = s.Animation;
}
}
float oldTimePos = bucket.BlendOutPosition;
bucket.BlendOutPosition += deltaTime;
bucket.BlendInPosition = bucket.BlendOutPosition;
const float alpha = bucket.BlendOutPosition / slot.BlendOutTime;
if (sAnim != nullptr)
{
auto sValue = SampleAnimation(node, false, sAnim->GetLength(), 0.0f, oldTimePos, bucket.BlendInPosition, sAnim, 1);
//value = SampleAnimationsWithBlend(node, false, length, 0.0f, bucket.TimePosition, newTimePos, anim, sAnim, 1, 1, alpha);
value = Blend(node, value, sValue, alpha, AlphaBlendMode::HermiteCubic);
}
else
{
auto input = tryGetValue(node->GetBox(1), Value::Null);
value = Blend(node, value, input, alpha, AlphaBlendMode::HermiteCubic);
}
if (bucket.BlendOutPosition >= slot.BlendOutTime)
{
// Start from the beginning or the blend in position if next anim found.
slot.Animation = nullptr;
slot.Reset = false;
if (!sAnim)
{
bucket.TimePosition = 0;
bucket.BlendInPosition = 0;
}
else
{
bucket.TimePosition = bucket.BlendInPosition;
}
}
break;
}
if (bucket.LoopsLeft == 0 && slot.BlendOutTime > 0.0f && length - slot.BlendOutTime < bucket.TimePosition)
{
// Blend out

2
Source/Engine/Level/Actors/AnimatedModel.cpp
View File

@@ -506,7 +506,7 @@ void AnimatedModel::StopSlotAnimation(const StringView& slotName, Animation* ani
{
if (slot.Animation == anim && slot.Name == slotName)
{
slot.Animation = nullptr;
//slot.Animation = nullptr;
slot.Reset = true;
break;
}