How would I make sparks come from a vehicle with lua?

Code:

obj:addParticleByNodes(node1, node2, particle_velocity, particle_id, particle_width, particle_number)

node1 : Id of the first node
node2 : id of the last node (where the particle will exit)
particle_velocity: speed of the particle (can be -1)
particle_id : particle_id (the spark is 1)
particle_width: how much they randomly spread apart
particle_number: how many you spawn in one call

I do suggest you have a look at the jato controller in the citybus to know how to have parameters in jbeam,

 

yes, but it's really basic stuff.
You would need only to declare one new skin and this skin will specify a controller to load (your script that will make sparkles)

 

So you need to create a lua file here /vehicles/CRD/lua/controller/fireworkCRD.lua (path may not be correct because of vehicle name)

This is a template for the lua file

Code:

local M = {}
M.type = "auxilliary"
M.relevantDevice = nil
M.defaultOrder = 1000

local function updateGFX(dt)
  --spawn the particle here
end

local function init(jbeamData)
  -- you will get some parameters to save here
end

M.init = init
M.initSecondStage = initSecondStage
M.reset = reset
M.updateGFX = updateGFX

return M

this code is untested !! May have some error to fix (like missing init2 and reset )

this what you need to add to the jbeam part that define your skin

Code:

    "controller": [
        ["fileName"],
        ["fireworkCRD"],
    ],
  "fireworkCRD": {
    "fireworks":[
      ["node1","node2"
     ],
  },