如何使用开发产品在 Roblox 中制作持续 30 秒的护盾？

Question

当有人购买我的开发产品时，我希望他们得到一个持续 30 秒的可见护盾。

这是我试过的代码：

local mpService = game:GetService("MarketplaceService")
local Debris = game:GetService("Debris")

local function giveForcefield(player, duration)
    local character = player.Character
    if character then
        local forceField = Instance.new("ForceField")
        forceField.Visible = true
        forceField.Parent = character
        if duration then
            Debris:AddItem(forceField, duration)
        end
    end
end 


mpService.ProcessReceipt = function(purchaceInfo)
    local plr = game:GetService("Players"):GetPlayerByUserId(purchaceInfo.PlayerId)
    if purchaceInfo.ProductId == xxxxxxx then
        
        
        game.Players.PlayerAdded:connect(function(plr)
                repeat wait() until plr.Character
            local char = plr.Character
            giveForcefield(plr, 30)
            local forceField = Instance.new("ForceField") 
            forceField.Visible = true
            forceField.Parent = char

            end)

        

    end
    return Enum.ProductPurchaseDecision.PurchaseGranted
end

我可以购买开发产品，但代码运行后没有任何反应。我尝试了很多东西，但我有点迷路了。我能得到一些帮助吗？

Answer 1

您编写的用于创建和销毁 ForceField 的两种方法都是有效的，但正如 Piglet 所建议的那样，您的代码根本没有被调用。你的代码是说，“一旦有人购买了这个产品，等待另一个玩家加入并进入游戏，然后给那个新玩家力场。”

通常，game.Players.PlayerAdded:connect(function(plr) 被用作访问 Player object, but you have already gotten the Player object by calling GetPlayerByUserId 的一种方式，因此您可以只使用它来访问角色模型。

顺便提一下，您应该只在产品已成功提供后才将其标记为 PurchaseGranted。通过将 PurchaseGranted 作为默认 return 状态，您运行冒着有人购买尚未配置的产品的风险，并且您最终会拿走他们的钱而不给他们任何东西 return.

local PlayerService = game:GetService("Players")
local Debris = game:GetService("Debris")

mpService.ProcessReceipt = function(purchaceInfo)
    -- make sure that the player is still in the game
    local plr = PlayerService:GetPlayerByUserId(purchaceInfo.PlayerId)
    if not plr then
        warn("Player could not be found. They might have left")
        return Enum.ProductPurchaseDecision.NotProcessedYet
    end

    if purchaceInfo.ProductId == xxxxxxx then
        -- check if their character has spawned
        local char = plr.Character
        if not char then
            warn("Could not find player's character in game")
            return Enum.ProductPurchaseDecision.NotProcessedYet
        end
    
        -- grant the force field
        local forceField = Instance.new("ForceField", char)

        -- destroy the force field after a few seconds
        local duration = 30
        Debris:AddItem(forceField, duration)

        -- mark this item as granted
        return Enum.ProductPurchaseDecision.PurchaseGranted
    end

    -- not sure what thing they bought
    warn("Unprocessed item receipt", purchaseInfo)
    return Enum.ProductPurchaseDecision.NotProcessedYet
end

如何使用开发产品在 Roblox 中制作持续 30 秒的护盾？

How do I make a shield that lasts for 30 seconds in Roblox using a dev product?

lua

roblox