自制Roblox击飞武器仅对NPC生效，对玩家无效求排查原因

核心问题分析 #

• 玩家角色的RootPart属于客户端网络所有权，服务器直接修改Velocity会被客户端的物理模拟覆盖，导致击飞效果不生效。
• 直接调用humanoid:ChangeState(11)（飞行状态）对玩家无效，玩家的状态受客户端控制，强制修改会被覆盖。
• 原代码的Touched事件逻辑存在漏洞，触发后立刻重置debounce可能导致多次误触发，且PlayersHit表未正确发挥冷却作用。

修复步骤 #

1. 改用ApplyImpulse施加击飞力 #

服务器对玩家角色施加力必须使用ApplyImpulse，它能正确处理网络所有权问题，确保力的效果被客户端同步。修改fling函数：

local function fling(character)
    local humanoid = character:FindFirstChildOfClass("Humanoid")
    local rootpart
    if humanoid then
        rootpart = humanoid.RootPart
        -- 用跳跃状态替代强制飞行，让玩家失去站立支撑
        humanoid:ChangeState(Enum.HumanoidStateType.Jumping)
    end
    if not rootpart then
        rootpart = character.AssemblyRootPart
    end
    if rootpart then
        -- 计算随机击飞力，用ApplyImpulse替代直接修改Velocity
        local flingForce = Vector3.new(math.random(-100, 100), math.random(50, 100), math.random(-100, 100)) * 10
        rootpart:ApplyImpulse(flingForce)
    end
end

2. 优化Touched事件的冷却逻辑 #

修复原代码中debounce过早重置、PlayersHit未正确使用的问题，避免一次挥砍触发多次击飞：

handle.Touched:Connect(function(hit)
    local character = hit.Parent
    local humanoid = character:FindFirstChildOfClass("Humanoid")
    if humanoid and character ~= tool.Parent then
        -- 检查挥砍状态和冷却标记
        if debounce == true and not PlayersHit[character] then
            PlayersHit[character] = true
            fling(character)

            hitds:Increment(1, defaulthits)
            script.Parent.Handle.hit:Play()
            
            -- 0.5秒后移除冷却标记，防止重复击飞同一目标
            task.wait(0.5)
            PlayersHit[character] = nil
        end
    end
end)

3. 调整挥砍动画的debounce时机 #

原代码固定等待1秒重置debounce，改为等待动画播放完毕再重置，适配不同长度的挥砍动画：

tool.Activated:Connect(function()
    if not idle and not debounce then 
        debounce = true
        
        local humanoid = tool.Parent:WaitForChild("Humanoid")
        local animtrack = humanoid:LoadAnimation(slash)
            
        animtrack:Play()
        -- 等待动画结束后再重置debounce
        animtrack.Stopped:Wait()
        debounce = false
        idle = false
    end
end)

4. 可选：临时获取玩家RootPart所有权 #

如果击飞效果仍不稳定，可以临时获取玩家RootPart的服务器所有权，确保力的应用生效：

local function fling(character)
    local humanoid = character:FindFirstChildOfClass("Humanoid")
    local rootpart
    if humanoid then
        rootpart = humanoid.RootPart
        humanoid:ChangeState(Enum.HumanoidStateType.Jumping)
        -- 临时获取RootPart的服务器所有权
        if rootpart then
            rootpart:SetNetworkOwner(nil)
        end
    end
    if not rootpart then
        rootpart = character.AssemblyRootPart
    end
    if rootpart then
        local flingForce = Vector3.new(math.random(-100, 100), math.random(50, 100), math.random(-100, 100)) * 10
        rootpart:ApplyImpulse(flingForce)
        -- 1秒后归还所有权给客户端，避免影响玩家控制
        task.wait(1)
        local player = game:GetService("Players"):GetPlayerFromCharacter(character)
        if player then
            rootpart:SetNetworkOwner(player)
        end
    end
end

完整修复后代码 #

local power = 5

local function fling(character)
    local humanoid = character:FindFirstChildOfClass("Humanoid")
    local rootpart
    if humanoid then
        rootpart = humanoid.RootPart
        humanoid:ChangeState(Enum.HumanoidStateType.Jumping)
        -- 临时获取服务器所有权
        if rootpart then
            rootpart:SetNetworkOwner(nil)
        end
    end
    if not rootpart then
        rootpart = character.AssemblyRootPart
    end
    if rootpart then
        local flingForce = Vector3.new(math.random(-100, 100), math.random(50, 100), math.random(-100, 100)) * 10
        rootpart:ApplyImpulse(flingForce)
        -- 归还所有权给客户端
        task.wait(1)
        local player = game:GetService("Players"):GetPlayerFromCharacter(character)
        if player then
            rootpart:SetNetworkOwner(player)
        end
    end
end

local tool = script.Parent
local handle = tool:WaitForChild("Handle")
local slash = script:WaitForChild("Slash")
local debounce = false
local idle = false
local PlayersHit = {}
local playerService = game:GetService("Players")
local plr = playerService:GetPlayerFromCharacter(tool.Parent)

local Datastore2 = require(game.ServerScriptService:WaitForChild("Modules").Datastore2)

local defaulthits = 0

local hitds = Datastore2("hits",plr)

tool.Activated:Connect(function()
    if not idle and not debounce then 
        debounce = true
        
        local humanoid = tool.Parent:WaitForChild("Humanoid")
        local animtrack = humanoid:LoadAnimation(slash)
            
        animtrack:Play()
        animtrack.Stopped:Wait()
        debounce = false
        idle = false
    end
end)

handle.Touched:Connect(function(hit)
    local character = hit.Parent
    local humanoid = character:FindFirstChildOfClass("Humanoid")
    if humanoid and character ~= tool.Parent then
        if debounce and not PlayersHit[character] then
            PlayersHit[character] = true
            fling(character)

            hitds:Increment(1, defaulthits)
            script.Parent.Handle.hit:Play()
            
            task.wait(0.5)
            PlayersHit[character] = nil
        end
    end
end)

内容的提问来源于stack exchange，提问作者Strawberry Animations