How do I make a model's CFrame only affect the Y-axis orientation with CFrame.LookAt()?
I have a script for a tower defense game and the towers' attack functions use the CFrame.Lookat() functions to look at enemies, but I don't want it to look up/down, just left/right. So, I want the orientation's Y axis of the HumanoidRootPart to change but not the X axis. Here's my script (This is a module script):
function towerModule.Attack(tower, player)
local stats = tower:WaitForChild("stats")
local target = FindTarget(tower, info.Range.Value)
if target and target:FindFirstChild("Humanoid") and target.Humanoid.Health > 0 then
local hum = target.Humanoid
animateTowerEvent:FireAllClients(tower, "Attack")
local targetCFrame = CFrame.lookAt(tower.HumanoidRootPart.Position,target.HumanoidRootPart.Position) --Here, I just need to edit the local targetCFrame to only change the Y axis orientation, but I don't know how to.
tower.HumanoidRootPart.BodyGyro.CFrame = targetCFrame
local oldTargetHealth = hum.Health
if stats.Damage.Value <= hum.Health then
hum:TakeDamage(stats.Damage.Value)
elseif stats.Damage.Value > hum.Health then
hum.Health = 0
end
local newTargetHealth = hum.Health
player.Stats.Money.Value += oldTargetHealth-newTargetHealth
if hum.Health <= 0 then
player.Stats.Kills.Value += 1
end
task.wait(stats.Cooldown.Value)
end
task.wait()
if tower and tower.Parent then
towerModule.Attack(tower, player)
end
end
1 answer
You can get the displacement vector of the target's position from the tower's position, which is basically just the vector to get to the target from the tower. You can project the vector on the XZ plane by making the Y component 0, then you have the direction for the tower to look to. You just need to add the look direction to the tower's position since lookDir is relative to the tower's position (originating from the tower's position), but CFrame.lookAt expects a vector originating from the world origin, so we just add the towerPos which originates from the world origin
local towerPos = tower.HumanoidRootPart.Position local factor = Vector3.new(1, 0, 1) local dir = (target.HumanoidRootPart.Position - towerPos) * factor local targetCFrame = CFrame.lookAt(towerPos, towerPos + dir.Unit)
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