LoadMap

This command loads a scene from a file path or stream.

Syntax

• Map LoadMap(World world, string path, number flags = LOAD_DEFAULT)
• Map LoadMap(World world, Stream stream, Stream binstream, number flags = LOAD_DEFAULT)

Returns

If the scene is successfully loaded a new map is returned, otherwise NULL is returned.

Remarks

This feature is in continued development and its behavior may change somewhat in future updates.

Example

This example saves the starting map and reloads it when the space key is pressed.

-- Get the displays
local displays = GetDisplays()

-- Create a window
local window = CreateWindow("Ultra Engine", 0, 0, 1280, 720, displays[1], WINDOW_CENTER + WINDOW_TITLEBAR)

-- Create a world
local world = CreateWorld()

-- Create a framebuffer
local framebuffer = CreateFramebuffer(window)

-- Create a camera
local camera = CreateCamera(world)
camera:SetClearColor(0.125)
camera:SetPosition(0, 1, -4)

-- Create light
local light = CreateBoxLight(world)
light:SetRange(-10, 10)
light:SetArea(15, 15)
light:SetRotation(45, 35, 0)
light:SetColor(2)

-- Create the ground
local ground = CreateBox(world, 10, 1, 10)
ground:SetPosition(0, -0.5, 0)
ground:SetColor(0, 1, 0)

-- Create a scene
local scene = Map:new()
scene.entities:push_back(ground)
scene.entities:push_back(light)
ground = nil
light = nil

-- Add some boxes
for n = 1, 10 do
    local box = CreateBox(world)
    box:SetColor(0, 0, 1)
    box:SetPosition(Random(-5, 5), Random(5, 10), Random(-5, 5))
    box:SetMass(1)
    scene.entities:push_back(box)
end

-- Save the starting scene to memory
local stream = CreateBufferStream()
local binstream = CreateBufferStream()
scene:Save(stream, binstream)

-- Main loop
while not window:Closed() and not window:KeyDown(KEY_ESCAPE) do
    -- Reload the starting scene when space key is pressed
    if window:KeyHit(KEY_SPACE) then
        stream:Seek(0)
        binstream:Seek(0)
        scene = LoadScene(world, stream, binstream)
    end

    world:Update()
    world:Render(framebuffer)
end

return 0