How do you make a projectile quick with simple cframing?

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#1

Say I had a loop with a part moving in a specific direction consistently:

while task.wait() do
part.CFrame += part.CFrame.LookVector * .25
end

Increasing the increment of ‘.25’ could also cause hitbox issues, for example if I made the increment ‘2’, there’s a chance that the part would go straight through a player’s model. In that case detection wouldn’t even notice that it passed, and the part would just keep going.

How can I fix this with simple CFraming? I want the projectile to move at a quick speed, but at a small increment so it can be detected.

#2

I don’t think you should use CFrame for that. I used LinearVelocity for my rocket launcher and it works just fine.

#3

@puckmans I’ve used LinearVelocity too, seems to work alright. Do you know how I can keep the projectile facing towards the direction it’s going though? I’m not used to the new constraints.

When it’s unanchored it spins around while going in the direction.

#4

You can center the attachment to the center of mass of your object.

#5

I will give this a try, thanks for your help.

#6

@puckmans I can’t really seem to get that part to work. The part just doesn’t want to match the orientation of the attachment.

#7 
-- studs per second
local speed = 5

-- where the bullet will start and the direction it will move to
local cFrame = CFrame.lookAt(Vector3.new(0, 10, 0), Vector3.new(0, 10, -100))

-- create a part 
local part = Instance.new("Part")
part.CFrame = cFrame
part.AssemblyLinearVelocity = cFrame.LookVector * speed
part.Parent = game.Workspace
part.Touched:Conect(Function(OtherPart)
    part:Destroy()
end)

-- destory part after 30 seconds if it does not hit anything
game.Debris:AddItem(part, 30)

-- add a attachment to the part
local attachment = Instance.new("Attachment")
attachment.Parent = part

-- add vectorForce that will counteract gravity so the bullet moves in a straight path
local vectorForce = Instance.new("VectorForce")
vectorForce.Attachment0 = attachment
vectorForce.RelativeTo = enum.ActuatorRelativeTo.World
vectorForce.Force = Vector3.new(0, game.Workspace.Gravity * part.AssemblyMass, 0)
vectorForce.Parent = part
#8

set the orientation then update the position of it to move forward instead