/// <summary>
/// Gather the current details of the <see cref="AnimancerNode.Root"/> and register this
/// <see cref="CustomFade"/> to be updated by it so that it can replace the regular fade behaviour.
/// </summary>
protected void Apply(AnimancerState state)
{
#if UNITY_ASSERTIONS
Debug.Assert(state != null, "State is null.");
Debug.Assert(state.IsValid, "State is not valid.");
Debug.Assert(state.IsPlaying, "State is not playing.");
Debug.Assert(state.LayerIndex >= 0, "State is not connected to a layer.");
Debug.Assert(state.TargetWeight > 0, "State is not fading in.");
var animancer = state.Root;
Debug.Assert(animancer != null, $"{nameof(state)}.{nameof(state.Root)} is null.");
#if UNITY_EDITOR
if (WarningType.CustomFadeBounds.IsEnabled())
{
if (CalculateWeight(0) != 0)
{
WarningType.CustomFadeBounds.Log("CalculateWeight(0) != 0.", animancer.Component);
}
if (CalculateWeight(1) != 1)
{
WarningType.CustomFadeBounds.Log("CalculateWeight(1) != 1.", animancer.Component);
}
}
#endif
#endif
_FadeSpeed = state.FadeSpeed;
if (_FadeSpeed == 0)
{
return;
}
_Time = 0;
_TargetState = new StateWeight(state);
_TargetLayer = state.Layer;
_CommandCount = _TargetLayer.CommandCount;
OtherStates.Clear();
for (int i = _TargetLayer.ChildCount - 1; i >= 0; i--)
{
var other = _TargetLayer.GetChild(i);
other.FadeSpeed = 0;
if (other != state && other.Weight != 0)
{
OtherStates.Add(new StateWeight(other));
}
}
state.Root.RequireUpdate(this);
}
/// <summary>
/// 更新状态
/// </summary>
/// <param name="deltatime"></param>
public void UpdateTranstion(float deltatime)
{
float sumWeight = 0;
for (int i = 0; i < m_inputStates.Count; i++)
{
Playable input = StateMixer.GetInput(i);
if (false == input.IsValid())
{
continue;
}
float inputWeight = m_inputStates[i].m_Weight;
inputWeight += m_transitionSpeed * deltatime * (m_crtPlayingInputIdx == i ? 1 : -1);
inputWeight = Mathf.Clamp01(inputWeight);
sumWeight += inputWeight;
}
// 归一化权重
for (int i = 0; i < m_inputStates.Count; i++)
{
Playable input = StateMixer.GetInput(i);
if (false == input.IsValid())
{
continue;
}
StateWeight stateWeight = m_inputStates[i];
stateWeight.m_Weight /= sumWeight;
float weight = stateWeight.m_Weight;
StateMixer.SetInputWeight(i, weight);
// 权重为0 断开连接
if (weight <= Mathf.Epsilon)
{
StateMixer.DisconnectInput(i);
APStateBase inputState = GetState(stateWeight.m_StateID);
if (inputState == null)
{
Debug.LogError($"UpdateTranstion: 断开连接时 状态[{stateWeight.m_StateID}]不存在");
}
else
{
inputState.m_IsFree = true;
inputState.m_LstEnterFreeTime = StateMixer.GetTime();
}
}
}
}
