Ai fighting system (ChatGPT Made)

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I had ChatGPT generate code for a small idea I had. If something didn’t work, I’d first let it try to fix the issue. Most of the time (about 90%), it managed to correct itself. If not, I’d step in and fix it quickly. I handled the hit animations with the logs myself. There are two separate programs: melee unit and ranged unit. The ranged unit required some creative problem-solving because I kept running into an issue with its stopping distance before firing. In the end, I had to fix that part myself.

I’m thinking of doing something with this—maybe a game where you place units, battle others, and earn money, etc. Is the code perfect? No, but compared to writing it all myself, it saved me about five hours of work. I had to be creative with my prompts, especially in explaining what I wanted the program to do. If there was an issue, I’d just describe it, and ChatGPT would work on a fix.

ChatGPT made:

  • Movement
  • Attacking system
  • Update movement if enemy changed positions
  • Face the enemy while attacking

Woud love to hear what your thoughts are. Not trying to debate if using it is right or wrong.

Code below is the melee unit ChatGPT had programmed. (After several fixes)

local npc = script.Parent
local humanoid = npc:FindFirstChildOfClass("Humanoid")
local hrp = npc:FindFirstChild("HumanoidRootPart")
local WhichTeam = script.Parent.Parent
local WhoToAttack = game.Workspace.WhoToAttack:FindFirstChild(WhichTeam.Name)
local enemiesFolder = game.Workspace:FindFirstChild(WhoToAttack.Value)

if not humanoid or not hrp or not enemiesFolder then
	warn("Missing components in NPC or Enemies folder!")
	return
end

-- Walking animation setup
local walkAnim = Instance.new("Animation")
walkAnim.AnimationId = "rbxassetid://10921269718"
local animator = humanoid:FindFirstChildOfClass("Animator") or humanoid:WaitForChild("Animator")
local walkAnimation = animator:LoadAnimation(walkAnim)

-- Attack animation setup
local attackAnim = Instance.new("Animation")
attackAnim.AnimationId = "rbxassetid://140229763176741"
local attackAnimation = animator:LoadAnimation(attackAnim)

-- Function to stop the walking animation when NPC is idle
local function onRunning(speed)
	if speed > 0 then
		if not walkAnimation.IsPlaying then
			walkAnimation:Play()
		end
	else
		if walkAnimation.IsPlaying then
			walkAnimation:Stop()
		end
	end
end

humanoid.Running:Connect(onRunning)

-- Remove NPC body after death
local function onDeath()
	wait(1) -- Wait 1 second before removing the body
	npc:Destroy()
end

humanoid.Died:Connect(onDeath) -- Connect death event

local function getClosestEnemy()
	local closestEnemy = nil
	local shortestDistance = math.huge

	for _, enemy in pairs(enemiesFolder:GetChildren()) do
		local enemyHumanoid = enemy:FindFirstChildOfClass("Humanoid")
		local enemyHRP = enemy:FindFirstChild("HumanoidRootPart")

		if enemyHumanoid and enemyHumanoid.Health > 0 and enemyHRP then
			local distance = (hrp.Position - enemyHRP.Position).Magnitude
			if distance < shortestDistance then
				shortestDistance = distance
				closestEnemy = enemy
			end
		end
	end
	return closestEnemy
end

local function moveToEnemy()
	while humanoid.Health > 0 do -- Only run while alive
		local target = getClosestEnemy()

		if not target then
			break
		end

		local targetHumanoid = target:FindFirstChildOfClass("Humanoid")
		local targetHRP = target:FindFirstChild("HumanoidRootPart")

		if not targetHumanoid or not targetHRP then
			task.wait(0.5)
			continue
		end

		while targetHumanoid.Health > 0 do
			local distance = (hrp.Position - targetHRP.Position).Magnitude

			if distance <= 10 then
				-- Stop moving
				humanoid:Move(Vector3.new(0, 0, 0))
				if walkAnimation.IsPlaying then
					walkAnimation:Stop()
				end

				-- Face the enemy
				hrp.CFrame = CFrame.new(hrp.Position, Vector3.new(targetHRP.Position.X, hrp.Position.Y, targetHRP.Position.Z))

				-- Play attack animation
				if not attackAnimation.IsPlaying then
					attackAnimation:Play()
				end

				-- Deal damage
				targetHumanoid:TakeDamage(math.random(10,15)) 
				wait(1) -- Attack delay

				if (hrp.Position - targetHRP.Position).Magnitude > 10 then
					break
				end
			else
				humanoid:MoveTo(targetHRP.Position)
			end

			task.wait(0.1) -- Update movement frequently
		end

		task.wait(0.5)
	end
end

moveToEnemy()
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