How to make a Roblox sword fighting game (with AI)

Files Picoo ships for this prompt

5 files · 139 lines · one recipe call

Sample output: ServerScriptService/SwordServer.lua

--!strict
-- Generated by Picoo recipe: sword_tool
-- Server-authoritative damage: validates player holds Tool, target in range, debounce
local Players = game:GetService("Players")
local ReplicatedStorage = game:GetService("ReplicatedStorage")
local Debris = game:GetService("Debris")

local DAMAGE = 25
local ATTACK_RANGE = 8
local COOLDOWN = 0.5
local HIT_DEBOUNCE = 0.4

local Remotes = ReplicatedStorage:WaitForChild("Remotes")
local SwordSwing: RemoteEvent = Remotes:WaitForChild("SwordSwing") :: RemoteEvent

local lastSwing: { [number]: number } = {}
local lastHit: { [string]: number } = {}

local function findHumanoidInRange(player: Player): Humanoid?
	local character = player.Character
	local rootPart = character and character:FindFirstChild("HumanoidRootPart") :: BasePart?
	if not rootPart then return nil end
	local closestHumanoid: Humanoid? = nil
	local closestDist = ATTACK_RANGE
	for _, other in ipairs(workspace:GetDescendants()) do
		if other:IsA("Humanoid") and other.Parent ~= character and other.Health > 0 then
			local otherRoot = other.Parent:FindFirstChild("HumanoidRootPart") :: BasePart?
			if otherRoot then
				local d = (otherRoot.Position - rootPart.Position).Magnitude
				if d <= closestDist then closestDist = d; closestHumanoid = other end
			end
		end
	end
	return closestHumanoid
end

SwordSwing.OnServerEvent:Connect(function(player: Player)
	local character = player.Character
	if not character then return end
	local tool = character:FindFirstChildOfClass("Tool")
	if not tool or tool.Name ~= "Sword" then return end

	local now = tick()
	if lastSwing[player.UserId] and (now - lastSwing[player.UserId]) < COOLDOWN then return end
	lastSwing[player.UserId] = now

	-- (excerpt) the Roblox slash animation is triggered here, then:

	local target = findHumanoidInRange(player)
	if not target then return end

	local targetPlayer = Players:GetPlayerFromCharacter(target.Parent)
	if targetPlayer then
		local pairKey = player.UserId .. ":" .. targetPlayer.UserId
		if lastHit[pairKey] and (now - lastHit[pairKey]) < HIT_DEBOUNCE then return end
		lastHit[pairKey] = now
	end

	target:TakeDamage(DAMAGE)
	-- (excerpt ends) then the hit sound and a 30-spark burst at the target