/// <summary>
/// 添加一个状态
/// </summary>
/// <param name="stateID"></param>
/// <param name="stateResHandle"></param>
public bool AddState(APStateBase state)
{
int findIdx = -1;
for (int i = 0; i < m_states.Count; i++)
{
APStateBase s = m_states[i];
if (s.m_IsDisposed)
{
findIdx = i;
continue;
}
// 状态重复
if (s.StateID == state.StateID)
{
return(false);
}
}
if (findIdx == -1)
{
m_states.Add(state);
}
else
{
m_states[findIdx] = state;
}
return(true);
}
/// <summary>
/// 过渡到状态
/// </summary>
/// <param name="stateID">状态ID</param>
/// <param name="startTime">新状态开始时间</param>
/// <param name="transtionTime">过渡时间</param>
/// <param name="transtionCurve">过渡曲线</param>
public void TranstionState(EAPStateID stateID, float startTime, float transtionTime, AnimationCurve transtionCurve = null)
{
APStateBase state = GetState(stateID);
int freeIdx = FindFreeMixerInputIndex();
// 过渡时间为0 则直接将权重设置为1
if (transtionTime <= Mathf.Epsilon)
{
for (int i = 0; i < m_inputStates.Count; i++)
{
m_inputStates[i].m_Weight = i == freeIdx ? 1 : 0;
}
m_transitionSpeed = 0;
}
else
{
m_inputStates[freeIdx].m_Weight = 0;
m_transitionSpeed = 1 / transtionTime;
}
m_inputStates[freeIdx].m_StateID = stateID;
m_crtPlayingInputIdx = freeIdx;
Playable statePlayable = state.Output;
state.SetTime(startTime);
// 状态已经连接上
state.m_IsFree = false;
StateMixer.ConnectInput(freeIdx, statePlayable, 0);
StateMixer.SetInputWeight(freeIdx, 0);
}
/// <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();
}
}
}
}