Documentation › API Reference › Object › Entity › Emitter

SetAcceleration

This function sets an acceleration value for released particles.

Syntax

Returns

This function returns an integer ranging between 0 and 4 containing the specified view mode.

Remarks

float x- specified acceleration along the x-axis
float y- specified acceleration along the y-axis
float z- specified acceleration along the z-axis

Example

--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) 

local acceleration = -0.5
emitter:SetAcceleration(0,acceleration,0) 

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
                        acceleration = acceleration + .1 
                        emitter:SetAcceleration(0,acceleration,0) 
        elseif (window:KeyDown(Key.Down)) then
                        acceleration = acceleration - .1 
                        emitter:SetAcceleration(0,acceleration,0) 
        end

        context:SetBlendMode(Blend.Alpha) 
        context:DrawText("Current Y-axis Acceleration: " ..emitter:GetAcceleration().y ,2,2) 

        context:Sync()
end