-- Roblox NPC Killer Script with Backward Movement local npcModel = script.Parent -- Assuming the script is a child of the NPC model local humanoid = npcModel:WaitForChild("Humanoid") local rootPart = npcModel:WaitForChild("HumanoidRootPart") -- Configuration local MAX_DISTANCE = 50 -- Studs local KILL_RANGE = 20 -- Studs local PATROL_INTERVAL_MIN = 5 -- Seconds local PATROL_INTERVAL_MAX = 10 -- Seconds local ATTACK_DELAY_MIN = 3 -- Seconds local ATTACK_DELAY_MAX = 5 -- Seconds local SAFE_ZONE_NAME = "safezone" -- Name of the safe zone region -- NPC state variables local npcState = "PATROLLING" -- PATROLLING, ATTACKING, RETURNING local timer = 0 local originalPosition = rootPart.CFrame.p local targetPosition = originalPosition - (rootPart.CFrame.LookVector * MAX_DISTANCE) -- Changed to move backward local checkInterval = math.random(PATROL_INTERVAL_MIN, PATROL_INTERVAL_MAX) local attackDelay = math.random(ATTACK_DELAY_MIN, ATTACK_DELAY_MAX) -- Function to check if player is in safezone local function isPlayerInSafezone(player) if player and player.Character and player.Character:FindFirstChild("HumanoidRootPart") then local playerPosition = player.Character.HumanoidRootPart.Position local safeZone = workspace:FindFirstChild(SAFE_ZONE_NAME) if safeZone and safeZone:IsA("BasePart") then local region = Region3.new( safeZone.Position - safeZone.Size/2, safeZone.Position + safeZone.Size/2 ) return region:IsPointInRegion(playerPosition) end end return false end -- Function to move NPC backward local function moveNPCBackward() if npcState == "PATROLLING" then humanoid:MoveTo(targetPosition) print("NPC moving backward to position: " .. targetPosition.X .. ", " .. targetPosition.Y .. ", " .. targetPosition.Z) npcState = "REACHING_TARGET" elseif npcState == "RETURNING" then humanoid:MoveTo(originalPosition) print("NPC returning to original position") npcState = "REACHING_START" end end -- Function to check for players in kill range local function checkPlayers() if npcState == "ATTACKING" then timer = timer + wait() if timer >= attackDelay then local players = game:GetService("Players"):GetPlayers() for _, player in ipairs(players) do if player.Character and player.Character:FindFirstChild("HumanoidRootPart") then local distance = (rootPart.Position - player.Character.HumanoidRootPart.Position).Magnitude if distance <= KILL_RANGE and not isPlayerInSafezone(player) then local playerHumanoid = player.Character:FindFirstChild("Humanoid") if playerHumanoid then playerHumanoid.Health = 0 print("Player " .. player.Name .. " was killed by NPC!") end end end end npcState = "RETURNING" timer = 0 print("NPC attack complete, returning to start") moveNPCBackward() end end end -- Main update function local function update() timer = timer + wait() if npcState == "PATROLLING" then if timer >= checkInterval then moveNPCBackward() timer = 0 checkInterval = math.random(PATROL_INTERVAL_MIN, PATROL_INTERVAL_MAX) end elseif npcState == "REACHING_TARGET" then if (rootPart.Position - targetPosition).Magnitude <= 5 then npcState = "ATTACKING" timer = 0 attackDelay = math.random(ATTACK_DELAY_MIN, ATTACK_DELAY_MAX) print("NPC reached target, starting attack sequence") end elseif npcState == "ATTACKING" then checkPlayers() elseif npcState == "REACHING_START" then if (rootPart.Position - originalPosition).Magnitude <= 5 then npcState = "PATROLLING" timer = 0 checkInterval = math.random(PATROL_INTERVAL_MIN, PATROL_INTERVAL_MAX) print("NPC returned to start, resuming patrol") end end end -- Initialize NPC print("Roblox NPC Killer (Backward Movement) script started") print("Initial patrol interval: " .. checkInterval .. " seconds") -- Main game loop while true do update() end -- NPC Backward Movement Script for Roblox local NPC = script.Parent local Humanoid = NPC:WaitForChild("Humanoid") local RootPart = NPC:WaitForChild("HumanoidRootPart") -- Configuration local MOVE_DISTANCE = 50 -- Studs local KILL_RANGE = 20 -- Studs local CHECK_TIME_MIN = 5 -- Seconds local CHECK_TIME_MAX = 10 -- Seconds local ATTACK_DELAY_MIN = 3 -- Seconds local ATTACK_DELAY_MAX = 5 -- Seconds -- State management local currentState = "IDLE" -- IDLE, MOVING_BACKWARD, ATTACKING, RETURNING local timer = 0 local startPosition = RootPart.Position local targetPosition = startPosition - (RootPart.CFrame.LookVector * MOVE_DISTANCE) -- Moving backward local nextCheckTime = math.random(CHECK_TIME_MIN, CHECK_TIME_MAX) local attackDelay = math.random(ATTACK_DELAY_MIN, ATTACK_DELAY_MAX) -- Function to check safezone (customize for your game) local function isInSafezone(player) if not player.Character then return false end local hrp = player.Character:FindFirstChild("HumanoidRootPart") if not hrp then return false end -- Check if player is touching a part with "Safezone" attribute local touchingParts = hrp:GetTouchingParts() for _, part in ipairs(touchingParts) do if part:GetAttribute("IsSafezone") then return true end end return false end -- Movement functions local function moveBackward() Humanoid:MoveTo(targetPosition) currentState = "MOVING_BACKWARD" print("NPC moving backward to target position") end local function returnToStart() Humanoid:MoveTo(startPosition) currentState = "RETURNING" print("NPC returning to start position") end -- Attack function local function checkForPlayers() local players = game:GetService("Players"):GetPlayers() for _, player in ipairs(players) do if player.Character then local hrp = player.Character:FindFirstChild("HumanoidRootPart") if hrp then local distance = (hrp.Position - RootPart.Position).Magnitude if distance <= KILL_RANGE and not isInSafezone(player) then local humanoid = player.Character:FindFirstChild("Humanoid") if humanoid then humanoid.Health = 0 print("Player " .. player.Name .. " was killed by NPC!") end end end end end end -- Main update function local function update(dt) timer = timer + dt if currentState == "IDLE" then if timer >= nextCheckTime then moveBackward() timer = 0 end elseif currentState == "MOVING_BACKWARD" then if (RootPart.Position - targetPosition).Magnitude < 2 then currentState = "ATTACKING" timer = 0 attackDelay = math.random(ATTACK_DELAY_MIN, ATTACK_DELAY_MAX) print("NPC reached target, waiting to attack") end elseif currentState == "ATTACKING" then if timer >= attackDelay then checkForPlayers() returnToStart() timer = 0 end elseif currentState == "RETURNING" then if (RootPart.Position - startPosition).Magnitude < 2 then currentState = "IDLE" timer = 0 nextCheckTime = math.random(CHECK_TIME_MIN, CHECK_TIME_MAX) print("NPC returned to start, waiting for next cycle") end end end -- Initialize print("NPC Backward Movement Script Started") Humanoid.WalkSpeed = 16 -- Adjust speed as needed -- Main loop while true do update(1) -- Using 1 second delta time for simplicity wait(1) end