Tower Defense Tweening/Animating Enemies

Help and Feedback Scripting Support
, ,
#1

Questions

  • how to move the enemies at a consistent speed
  • How do you animate the character while its tweening without a humanoid?

image

Problems

what else can i use besides tweening since its not very consistent with the speed of the character
how do i plant or give the character gravity so they touch the ground

i figured out the animating part but i used animation controller:LoadAnimation()
but is that deprecated? If so what should i use instead?

	local Test = game:GetService("ServerStorage").Enemies.Test:Clone()
	Test.Parent = workspace.Enemies
	Test:PivotTo(workspace.EnemySpawn.CFrame)

	local animator = Test.AnimationController
	local animTrack = animator:LoadAnimation(animator.Walk):Play()
	
	coroutine.wrap(function()
		for currentpoint = 1, #workspace.Pathpoints:GetChildren() do
			local targetCFrame = workspace.Pathpoints[currentpoint].CFrame

			local tweenInfo = TweenInfo.new(
				3,
				Enum.EasingStyle.Linear,
				Enum.EasingDirection.Out
			)

			-- Create the tween
			local tween = TweenService:Create(
				Test.PrimaryPart,
				tweenInfo,
				{ CFrame = targetCFrame }
			)
			tween:Play()
			tween.Completed:Wait()
		end
	end)()

	task.wait(0.5)
1 Like
#2

You can get the direction to the next node and add it to the CFrame with a speed multiplier.
Do this every frame and it will move at a constant speed.

#3

For this, you need to do some math (not too complicated), here is an example:

local distance = (PreviousWaypoint.Position - NextWayPoint.Position).Magnitude — Distance calculation

local speed = 10 — enemy speed (you can change using modules or however you want)

local TravelTime = distance/speed

1 Like
#4

And for the question, you can use CFrame:Lerp(), and you have to load the animation on the animator inside of the player/enemy.

local animator = plr.Humanoid:FindFirstChild(“Animator”) or Instance.new(“Animator”, plr.Humanoid)

(I’m on mobile so sorry for not code blocking)

#5

not really sure what you mean by getting the direction and adding it to the cframe

#6

how would i store the previouswaypoint with my script?

#7

Before the coroutine, add a local variable called previousWaypoint, and after the tween is completed inside the move function, set the previousWaypoint to that waypoint

#8

Also, I recommend only using positions and then using the CFrame property :LookAt() to look at the waypoint, and if you choose to use CFrame:Lerp() then you can construct a CFrame from that

#9

and what is the use of traveltime? i can’t calculate the traveltime until they have reached a new checkpoint to get the previous checkpoint?

#10

If previousCheckpoint == nil then previousCheckpoint = enemyspawnpoint end

#11

Actually you could just set it to enemyspawn before the for loop to save server resources

#12

is travel time going to be used in the tween info?

#13

Yes, thats the whole reason for the calculations, set TravelTime to the time the tween takes

#14

how would i use lookAt() with this?

#15

I’m on mobile but I’ll try my best to show how the move function could look

1 Like
#16 
local distance = (PreviousWaypoint.Position - NextWayPoint.Position).Magnitude — Distance calculation

local speed = 10 — enemy speed (you can change using modules or however you want)

local TravelTime : number = distance/speed

			local tweenInfo = TweenInfo.new(
				TravelTime,
				Enum.EasingStyle.Linear,
				Enum.EasingDirection.Out
			)

			-- Create the tween
			local tween = TweenService:Create(
				Test.PrimaryPart,
				tweenInfo,
				{ Position = CurrentPoint.Positon }
			)

local rot = CFrame.lookAt(PreviousWaypoint.Position, CurrentPoint.Position)

Test.PrimaryPart.CFrame = Test.PrimaryPart.CFrame * rot

			tween:Play()
			tween.Completed:Wait()

PreviousWaypoint = CurrentPoint
#17

i tried this its pretty buggy

for i = 1, 3 do
	local Test = game:GetService("ServerStorage").Enemies.Test:Clone()
	Test.Parent = workspace.Enemies
	Test:PivotTo(workspace.EnemySpawn.CFrame)
	local previous_waypoint = workspace.EnemySpawn
	
	coroutine.wrap(function()
		for currentpoint = 1, #workspace.Pathpoints:GetChildren() do
			
			local distnace = (previous_waypoint.Position - workspace.Pathpoints[currentpoint].Position).Magnitude -- distance calculation
			local speed = Test:GetAttribute("Speed") -- enemy speed
			local TravelTime = distnace/speed
			
			local info = TweenInfo.new(
				TravelTime,
				Enum.EasingStyle.Linear,
				Enum.EasingDirection.Out
			)
			
			local tween = TweenService:Create(
				Test.PrimaryPart,
				info,
				{CFrame = workspace.Pathpoints[currentpoint].CFrame}
			)
			tween:Play()
			tween.Completed:Wait()
			local rot = CFrame.lookAt(previous_waypoint.Position, workspace.Pathpoints[currentpoint].Position)

			Test.PrimaryPart.CFrame = Test.PrimaryPart.CFrame * rot

			previous_waypoint = workspace.Pathpoints[currentpoint]
		end
		Test:Destroy()
	end)()

	task.wait(0.5)
end

when they reach the waypoint they teleport away far away and then walk to the next one

#18

Its something with the lookAt function, quote it out and see if it atleast moves to the positions (actually with these modifications you can just entirely remove the lookAt function)

#19

i tried it and yes they do move to every point

#20

Does it look fine?