Documentation › API Reference › Object › Entity › Emitter

GetDuration

This function returns the length of time, in milliseconds, that a particle will exist for.

Syntax

Returns

This function returns an integer containing the length of time that a particle will exist for.

Example

duration = 3000

--Create a window
window = Window:Create()
context = Context:Create(window)
world = World:Create()
camera = Camera:Create()
camera:Move(0,0,-3)
local light = DirectionalLight:Create()
light:SetRotation(35,35,0)

--Create an emitter
emitter = Emitter:Create(100)
emitter:SetDuration(duration)

while true do
    
    if window:Closed() or window:KeyHit(Key.Escape) then return false end

    Time:Update()
    world:Update()
    world:Render()

    if (window:KeyDown(Key.Up)) then
        duration = duration + 1000
        emitter:SetDuration(duration)
    elseif (window:KeyDown(Key.Down) and duration > 0.0) then
        duration = duration - 1000
        emitter:SetDuration(duration)
    end

    context:SetBlendMode(Blend.Alpha)
    context:DrawText("Particles will last for: "..(emitter:GetDuration()/1000) .. " seconds." ,2,2)
    
    context:Sync()
end