【源码】NPC检测玩家的行为和移动

[冷颜的午睡日常]

这个代码可以用于检测玩家是否移动了，或者其他行为（比如，跳跃，摔倒，等等）。

直接贴代码：

local avatar = script.Parent

function GetVector3Dot(v1, v2) --计算向量
	return v1.X * v2.X + v1.Y * v2.Y + v1.Z * v2.Z
end
function aradius(ros1,ros2,pos1,pos2,r,angle) --计算两物体角度，并且返回玩家是否在NPC的范围内
	--r是扇形半径，angle是角度
	local t0 = ros1.Y
	local t = t0*math.pi/180 --玩家当前朝向于z轴正向夹角
	local v1 = Vector3.new(math.sin(t),0,math.cos(t))*(-1) --玩家本身单位向量
	local pos = pos1 - pos2
	local poss = pos/math.sqrt(pos.X*pos.X+pos.Y*pos.Y+pos.Z*pos.Z)
	local possuc = Vector3.new(poss.X,0,poss.Z)
	local cos = GetVector3Dot(v1, possuc)
	local j = math.acos(cos)
	local jd = j*180/math.pi
	local dis = (pos).magnitude
	return jd < angle/2 and dis<r
end

while wait() do
	
	for k,player in pairs(game.Players:GetChildren()) do
		
		local success,err = pcall(function()
			if player.Character and player.Character:FindFirstChild("HumanoidRootPart") then
				
				local bool = aradius(avatar.HumanoidRootPart.Orientation,player.Character.HumanoidRootPart.Orientation,avatar.HumanoidRootPart.Position,player.Character.HumanoidRootPart.Position,999999,175)
				local GetState_T = player.Character.Humanoid:GetState() ~= Enum.HumanoidStateType.Running and player.Character.Humanoid:GetState() ~= Enum.HumanoidStateType.RunningNoPhysics
				local MoveDirection_T = player.Character.Humanoid.MoveDirection
				
				if player.Character.Humanoid.Health > 0 and (MoveDirection_T ~= Vector3.new(0,0,0) or not GetState_T == false) then
					print("触发")
				end
				
			end
		end)
		
		if not success then
			warn(err)
		end
		
	end

end