Roblox Studio AI Pathfinding Tutorial || Part 4 - Chasing Player

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[@duckhive-games]

-- NPC Pathfinding Script (Server-Side) -- Place in NPC
local PathfindingService = game:GetService("PathfindingService")
local npc = script.Parent
local humanoid = npc:WaitForChild("Humanoid")
local humanoidRootPart = npc:WaitForChild("HumanoidRootPart")
-- Reference the Animate script
local animateScript = npc:WaitForChild("Animate")
-- Access the built-in walk animation
local walkAnimationTrack = humanoid:LoadAnimation(animateScript.walk.WalkAnim)
local function followPlayer(playerRootPart)
-- Recalculate the path every 0.1 seconds
while true do
-- Create a path to the target
local path = PathfindingService:CreatePath({
AgentRadius = 2,
AgentHeight = 1,
AgentCanJump = true,
AgentJumpHeight = 5,
AgentMaxSlope = 45
})
-- Compute the path to the target
path:ComputeAsync(humanoidRootPart.Position, playerRootPart.Position)
-- Check if the path was successfully computed
if path.Status == Enum.PathStatus.Success then
local waypoints = path:GetWaypoints()
-- Play the walk animation when the NPC starts moving
walkAnimationTrack:Play()
-- Move the NPC along the waypoints
for _, waypoint in ipairs(waypoints) do
-- Check if the NPC should jump at this waypoint
if waypoint.Action == Enum.PathWaypointAction.Jump then
-- Make the NPC jump
humanoid:ChangeState(Enum.HumanoidStateType.Jumping)
end
npc.Humanoid:MoveTo(waypoint.Position)
--npc.Humanoid.MoveToFinished:Wait() -- uncomment to make NPC move to outdated positions
if (humanoidRootPart.Position - playerRootPart.Position).Magnitude < 2 then
-- Stop the walk animation when NPC reached the destination
walkAnimationTrack:Stop()
break
end
end
end
wait(0.5) -- Recalculates the path every 0.5 seconds
end
end
-- Function to find the nearest player
local function findNearestPlayer()
local players = game.Players:GetPlayers()
local nearestPlayer = nil
local shortestDistance = math.huge
-- Find the nearest player based on distance
for _, player in ipairs(players) do
local character = player.Character
if character and character:WaitForChild("HumanoidRootPart") then
local distance = (character.HumanoidRootPart.Position - humanoidRootPart.Position).Magnitude
if distance < shortestDistance then
shortestDistance = distance
nearestPlayer = character
end
end
end
return nearestPlayer
end
-- Constantly chase the nearest player
while true do
local nearestPlayer = findNearestPlayer()
if nearestPlayer then
followPlayer(nearestPlayer:WaitForChild("HumanoidRootPart"))
end
wait(0.1) -- check again every 0.1 seconds for player updates
end