// 更新行为树
public int UpdateBehavior(float gameTime, float deltaTime)
{
if (m_BehaviorTree == null)
{
return(1);
}
AIBehaviorRequest currentRequest = m_BehaviorWorkData.request;
if (currentRequest == null)
{
return(1);
}
//if(currentRequest.isRequestCompleted)
// return 1;
m_BehaviorWorkData.gameTime = gameTime;
m_BehaviorWorkData.deltaTime = deltaTime;
if (m_BehaviorTree.Evaluate(m_BehaviorWorkData))
{
m_BehaviorTree.Update(m_BehaviorWorkData);
}
return(0);
}
public override bool IsTrue(TBTWorkingData wData = null)
{
// 判断物体是否在视野范围内
BattleBehaviorWorkingData data = wData as BattleBehaviorWorkingData;
AIBehaviorRequest request = data.request;
BattleUnit owner = data.owner;
float viewRange = owner.GetViewRange();
Vector2 targetPos = request.target.Get2DPosition();
Vector2 ownerPos = owner.Get2DPosition();
float distanceSquare = (targetPos - ownerPos).magnitude;
BattleLog.Log(string.Format("【CON_IsInRange】距离：{0}，可见范围：{1}", distanceSquare, viewRange * viewRange));
return(distanceSquare <= viewRange * viewRange);
}
protected override int onExecute(TBTWorkingData wData)
{
BattleBehaviorWorkingData behaviorData = wData as BattleBehaviorWorkingData;
float deltaTime = behaviorData.deltaTime;
BattleUnit source = behaviorData.owner;
AIBehaviorRequest request = behaviorData.request;
Unit target = request.target;
Vector2 sourcePos = source.Get2DPosition();
Vector2 targetPos = target.Get2DPosition();
Vector2 sourceForward = source.Get2DForward();
Vector2 targetForward = (targetPos - sourcePos).normalized;
float turnSpeed = source.GetTurnSpeed();
float angle = Vector2.Angle(targetForward, sourceForward);
float radianToTurn = turnSpeed * deltaTime;
//BattleLog.Log("【NOD_TurnTo】angle:{0},{1}", angle, radianToTurn * Mathf.Rad2Deg);
if (angle < radianToTurn * Mathf.Rad2Deg)
{
source.Set2DForward(targetForward);
GameMsg.instance.SendMessage(GameMsgDef.Hero_TurnTo2D, new HeorTurnEventArgs()
{
id = source.id,
forward = targetForward,
});
return(TBTRunningStatus.FINISHED);
}
// 叉积算出方向 unity是左手坐标系，所以反过来了
Vector3 cross = Vector3.Cross(targetForward, sourceForward);
if (cross.z > 0)
{
radianToTurn = -radianToTurn;
}
Vector2 newForward = BattleMath.Vector2RotateFromRadian(sourceForward.x, sourceForward.y, radianToTurn);
//BattleLog.Log("【NOD_TurnTo】自己朝向：{0} 目标朝向：{1} 相隔角度：{2} 旋转弧度：{3} 叉乘：{4} 新的朝向：{5}", sourceForward.ToString(),targetForward.ToString(), angle.ToString(),(radianToTurn * Mathf.Rad2Deg).ToString(), cross.ToString(), newForward.ToString());
source.Set2DForward(newForward);
GameMsg.instance.SendMessage(GameMsgDef.Hero_TurnTo2D, new HeorTurnEventArgs()
{
id = source.id,
forward = newForward,
});
return(TBTRunningStatus.EXECUTING);
}
public override bool IsTrue(TBTWorkingData wData)
{
BattleBehaviorWorkingData behaviorData = wData as BattleBehaviorWorkingData;
BattleUnit owner = behaviorData.owner;
AIBehaviorRequest request = behaviorData.request;
Unit target = request.target;
Vector2 ownerPos = owner.Get2DPosition();
Vector2 targetPos = target.Get2DPosition();
Vector2 toForward = targetPos - ownerPos;
Vector2 ownerForward = owner.Get2DForward();
float angle = Vector2.Angle(toForward, ownerForward);
//BattleLog.Log("【CON_IsAngleNeedTurnTo】angle:{0}", angle);
return(angle > 0.1f);
}
protected override int onExecute(TBTWorkingData wData)
{
BattleBehaviorWorkingData behaviorData = wData as BattleBehaviorWorkingData;
float deltaTime = behaviorData.deltaTime;
BattleUnit source = behaviorData.owner;
AIBehaviorRequest request = behaviorData.request;
Unit target = request.target;
Vector2 ownerPos = source.Get2DPosition();
Vector2 targetPos = target.Get2DPosition();
float attackRange = source.GetAttackRange();
float distance = (targetPos - ownerPos).magnitude;
if (distance <= attackRange)
{
return(TBTRunningStatus.FINISHED);
}
float moveSpeed = source.GetMoveSpeed();
float detalTime = behaviorData.deltaTime;
float toForwardX = (targetPos.x - ownerPos.x) / distance;
float toForwardZ = (targetPos.y - ownerPos.y) / distance;
float newPosX = ownerPos.x + detalTime * moveSpeed * toForwardX;
float newPosZ = ownerPos.y + detalTime * moveSpeed * toForwardZ;
source.Set2DPosition(newPosX, newPosZ);
//BattleLog.Log("【NOD_MoveTo】移动速度：{0} 当前位置：{1},{2} 目标位置：{3},{4} newPosX：{5} newPosZ：{6}}",
// moveSpeed.ToString(), ownerPos.x.ToString(),ownerPos.y.ToString(), targetPos.x.ToString(),targetPos.y.ToString()
// ,newPosX.ToString(),newPosZ.ToString());
GameMsg.instance.SendMessage(GameMsgDef.Hero_MoveTo, new HeorMoveEventArgs()
{
id = source.id,
targetPos = new Vector3(newPosX, 0, newPosZ),
forward = new Vector3(toForwardX, 0, toForwardZ)
});
return(TBTRunningStatus.EXECUTING);
}
public override bool IsTrue(TBTWorkingData wData)
{
BattleDecisionWorkingData decisionData = wData as BattleDecisionWorkingData;
BattleUnit battleEntity = decisionData.owner;
if (!battleEntity.IsCanDecision())
{
return(false);
}
// 新的决策
AIBehaviorRequest request = decisionData.request;
if (request == null)
{
return(true);
}
else
{
//上一个请求已经执行完成，就更新新请求
return(request.IsRequestCompleted());
}
}
// 更新请求
public int UpdateRequest(float gameTime, float deltaTime)
{
AIBehaviorRequest foregroundRequest = m_BehaviorWorkData.request;
AIBehaviorRequest backgroundRequest = m_DecisionWorkData.request;
if (backgroundRequest != foregroundRequest)
{
//比对决策树和行为树的请求是否一致
if (foregroundRequest != null)
{
GameLog.Log("【UpdateRequest】当前在处理的请求（前端）：" + foregroundRequest.ToString());
}
if (backgroundRequest != null)
{
GameLog.Log("【UpdateRequest】下一个要处理的请求（后端）：" + backgroundRequest.ToString());
}
//reset bev tree 清理一些状态
m_BehaviorTree.Transition(m_BehaviorWorkData);
//assign to current
m_BehaviorWorkData.request = backgroundRequest;
}
return(0);
}
// 决策层：输入（游戏世界信息），输出（请求）
// 行为层：输入（请求），输出（修改游戏世界的相关信息）
public void SetDecisionRequest(AIBehaviorRequest request)
{
m_DecisionWorkData.request = request;
}
