Starfall - Basic Continuous Chair Controller Example

starfall_basic_continous_chair_controller.lua

--@name Basic continuous chair controller
--@author Name
--@server

-- USAGE:
-- Place chip on the ground, a chair will spawn, sit in it and press W or S

local owner, client, chip, world = owner(), player(), chip(), entity(0)

-- Create a frozen SENT chair 20 units above the chip
local chair = prop.createSent(chip:getPos() + chip:getUp() * 20, Angle(), "Seat_Jeep", true)

-- Create a basic hologram in front of the chair with a scale of 0.75
local holo = holograms.create(chair:getPos() + chair:getForward() * 40, Angle(), "models/props_phx/games/chess/white_rook.mdl", Vector(0.75))

-- A variable that will control velocity of the hologram
local velocity = 0

-- Use the `Tick` hook to create an update function, essentially runs continuously
hook.add("Tick", "Update", function()
	
	-- Grab the player that's currently using the vehicle
	local driver = chair:getDriver()
	
	-- The function above will return a null entity if no driver has been found, so we need to check for a valid one
	if driver:isValid() then
		
		-- If the player is holding his FORWARD bind (W by default), set the velocity to 50
		-- Otherwise if he's holding the BACK bind (S by default), set the velocity to -35
		if driver:keyDown(IN_KEY.FORWARD) then
			velocity = 50
		elseif driver:keyDown(IN_KEY.BACK) then
			velocity = -35
		end
	end
	
	-- Create a new vector with Y axis based on the `velocity` and apply that to the hologram
	-- Note that it's using hologram exclusive `setVel` instead of `setVelocity` which will actually set the velocity, not add it (GMod bug)
	holo:setVel(Vector(0, velocity, 0))
	
	-- Decrease the velocity, otherwise hologram will never stop
	velocity = velocity * 0.9
end)