Lerp rotation help

Help and Feedback Scripting Support
#1

Hey, I made a entity moving system with lerp, and I need to make them to look in the way they’re walking, but I don’t really understand how to make this…

task.spawn(function()
	while true do
		local dt = task.wait()
		for index, newEntity in ipairs(Entities) do
			local distance = (newEntity.CurrentPoint.Position - newEntity.Cframe.Position).Magnitude
			local speed = newEntity.Speed*dt
			local estimatedTime = speed / distance
			local adjustedLerpAlpha = math.min(estimatedTime,1)
			newEntity.Cframe = newEntity.Cframe:Lerp(newEntity.CurrentPoint.CFrame , adjustedLerpAlpha) -- store the new cframe
			workspace.Enemy:FindFirstChild(newEntity.EntityId).Value = newEntity.Cframe -- update cframe value
			newEntity["Model"].CFrame = newEntity.Cframe -- update part positon
			if adjustedLerpAlpha >= 1 then
				if newEntity.Progress >= #Path:GetChildren()-1 then
					newEntity["Model"]:Destroy()
					ClientReplicator:FireAllClients("Destroy", newEntity.EntityId)
					newEntity = nil
				else
					newEntity.Progress += 1
					part2 = workspace.Map.Waypoints:FindFirstChild(tostring(newEntity.Progress))
					newEntity.CurrentPoint = part2
				end 
			end
		end
	end
end)

Can someone tell me how to make this rotation in my case?

Video of current state:

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#2

After some research and help of gpt I got this result, but this with bugs. How can I do the smooth turning in my case?

task.spawn(function()
	while true do
		local dt = task.wait()
		for index, newEntity in ipairs(Entities) do
			local distance = (newEntity.CurrentPoint.Position - newEntity.Cframe.Position).Magnitude
			local speed = newEntity.Speed * dt
			local estimatedTime = speed / distance
			local adjustedLerpAlpha = math.min(estimatedTime, 1)
			
			local newCFrame = newEntity.Cframe:Lerp(newEntity.CurrentPoint.CFrame, adjustedLerpAlpha)
			
			-- Calculate the direction vector
			local direction = (newEntity.CurrentPoint.Position - newEntity.Cframe.Position).unit
			

			-- Create a new CFrame with the calculated direction
			local lookAtCFrame = CFrame.new(newCFrame.Position, newCFrame.Position + direction)

			-- Update entity's CFrame
			newEntity.Cframe = lookAtCFrame

			-- Update entity's position
			workspace.Enemy:FindFirstChild(newEntity.EntityId).Value = newEntity.Cframe

			-- Update entity's part position
			newEntity["Model"].CFrame = newEntity.Cframe

			if adjustedLerpAlpha >= 1 then
				
				if newEntity.Progress >= #Path:GetChildren() - 1 then
					newEntity["Model"]:Destroy()
					ClientReplicator:FireAllClients("Destroy", newEntity.EntityId)
					newEntity = nil
				else
					newEntity.Progress += 1
					local part2 = workspace.Map.Waypoints:FindFirstChild(tostring(newEntity.Progress))
					newEntity.CurrentPoint = part2
				end
			end
		end
	end
end)

And why this bug happen? It appear only on the first corner

1 Like
#3

You should look into AlignOrientation

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#4

I never used AlignOrientation, is there another way to do that? Because I have to align also models on client side… And the thing may be complicated…

#5

Try AlignOrientation, it’s not complicated. And you can align whatever you want, as long as it’s unanchored.

#6

I tried right now to align parts on server side, but still something going wrong… I read this post on forum and made from this example: An easier way to use AlignOrientation

Is this a good one? Because I have set the align orientation inside part as intended but orientation didn’t happen…

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#7 
local function findAngle(positionA, positionB)
	local CF=CFrame.new(positionA, positionB)
	local targetX, targetY, targetZ=CF:ToEulerAnglesXYZ()
	local finalizedAngle=CFrame.Angles(targetX, targetY, targetZ)
	return finalizedAngle
end


task.spawn(function()
	while true do
		local dt = task.wait()
		for index, newEntity in ipairs(Entities) do
			local distance = (newEntity.CurrentPoint.Position - newEntity.Cframe.Position).Magnitude
			local speed = newEntity.Speed * dt
			local estimatedTime = speed / distance
			local adjustedLerpAlpha = math.min(estimatedTime, 1)
			
			local newCFrame = newEntity.Cframe:Lerp(newEntity.CurrentPoint.CFrame, adjustedLerpAlpha)
			
			newEntity.Cframe = newCFrame

			-- Update entity's position
			workspace.Enemy:FindFirstChild(newEntity.EntityId).Value = newEntity.Cframe

			-- Update entity's part position
			newEntity["Model"].CFrame = newEntity.Cframe

			newEntity["Model"].AlignOrientation.CFrame = findAngle(newEntity.Cframe.Position, newEntity.CurrentPoint.Position)

			if adjustedLerpAlpha >= 1 then
				
				if newEntity.Progress >= #Path:GetChildren() - 1 then
					newEntity["Model"]:Destroy()
					ClientReplicator:FireAllClients("Destroy", newEntity.EntityId)
					newEntity = nil
				else
					newEntity.Progress += 1
					local part2 = workspace.Map.Waypoints:FindFirstChild(tostring(newEntity.Progress))
					newEntity.CurrentPoint = part2
					
					newEntity["Model"].AlignOrientation.Attachment0 = newEntity.CurrentPoint:FindFirstChild("Attachment")
				end
			end
		end
	end
end)

I got something like this, every time the target point is changed I also change the attachment of align orientation… But probably the function with calculations are not the good one for me. I also tried the CFrame.lookAt()

https://gyazo.com/24eee9bc735f040c97c688d9e06ae2c4

1 Like