Tower Defense Game; cannot get the previous waypoint [Solved]

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#1

Hello, I’m trying to make a tower defense game.
I’m trying to use TweenService for the movement system but i cannot figure out how to get the previous waypoint.

function EnemyModule.Move(enemy)
	for waypoint = 1, #workspace.Waypoints:GetChildren() do
		local previousPoint = workspace.Waypoints[0]
		local nextPoint = workspace.Waypoints[1]
		
		local Distance = (previousPoint.Position-nextPoint.Position).Magnitude
		
		local TravelTime = Distance / enemy.Humanoid.WalkSpeed
		
		local MoveAnimation = TS:Create(enemy:WaitForChild("HumanoidRootPart"), TweenInfo.new(TravelTime), {["CFrame"] = workspace.Waypoints[waypoint].CFrame})

		MoveAnimation:Play()
		MoveAnimation.Completed:Wait()
	end
end

This is the error I’m getting.
obraz_2023-08-24_233303698

If you know the solution to this please let me know.

Sorry if this was a really easy fix.

1 Like
#2

Do you have a point called “0” inside of the waypoints folder? The error is stating that it doesn’t exist.

#3

No, I don’t but here’s the waypoint folder
obraz_2023-08-24_235852428

#4

That’s why. Point “0” does not exist so its trying to find something that isn’t there.

#5 
local waypoints = #workspace.Waypoints:GetChildren()
function EnemyModule.Move(enemy)
	for waypoint = 2, waypoints do
		local previousPoint = workspace.Waypoints[waypoint - 1]
		local nextPoint = workspace.Waypoints[waypoint]

		local Distance = (previousPoint.Position-nextPoint.Position).Magnitude

		local TravelTime = Distance / enemy.Humanoid.WalkSpeed

		local MoveAnimation = TS:Create(enemy:WaitForChild("HumanoidRootPart"), TweenInfo.new(TravelTime), {["CFrame"] = workspace.Waypoints[waypoint].CFrame})

		MoveAnimation:Play()
		MoveAnimation.Completed:Wait()
	end
end

waypoint 1 would be the starting point.
or …

for waypoint = 1, waypoints do
		local previousPoint = workspace.Waypoints[waypoint]
		local NextPoint  = workspace.Waypoints[waypoint + 1]
#6 
function EnemyModule.Move(enemy)
	for waypoint = 1, #workspace.Waypoints:GetChildren() do
		local currentWaypoint = workspace.Waypoints[tostring(waypoint)]
		local nextPoint = workspace.Waypoints[tostring(waypoint + 1)]
		
		local Distance = (currentPoint.Position-nextPoint.Position).Magnitude
		
		local TravelTime = Distance / enemy.Humanoid.WalkSpeed
		
		local MoveAnimation = TS:Create(enemy:WaitForChild("HumanoidRootPart"), TweenInfo.new(TravelTime, Enum.EasingStyle.Linear), {CFrame = CFrame.new(nextPoint.CFrame.X, enemy.HumanoidRootPart.CFrame.Y, nextPoint,CFrame.Z)})

		MoveAnimation:Play()
		MoveAnimation.Completed:Wait()
	end
end
#7

I was thinking that tostring() thing also … Names are strings even if you use a number.

#8

yeah a tiny oversight but doesnt matter

im also kinda that one guy who uses string.format for almost everything

#9

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