CreateLight

Syntax

• shared_ptr<Light> CreateLight(shared_ptr<World> world, const LightType type = LIGHT_POINT)

Example

#include "UltraEngine.h"

int main(int argc, const char* argv[])
{
    //Create window
    auto displays = GetDisplays();
    float displayscale = displays[0]->GetScale().y;
    auto window = CreateWindow(displays[0], "", 0, 0, 1280 * displayscale, 720 * displayscale);

    //Create framebuffer
    auto framebuffer = CreateFramebuffer(window);

    //Create world
    auto world = CreateWorld();

    //Create camera
    auto camera = CreateCamera(world);
    camera->SetClearColor(0.125);
    camera->Turn(35, 0, 0);
    camera->Move(0, 0, -10);

    //Create model
    auto box = CreateBox(world, 10, 1, 10);

    array<shared_ptr<Light>, 5> lights;
    int currentlight = 0;

    //Create point light
    lights[0] = CreateLight(world, LIGHT_POINT);
    lights[0]->SetColor(2, 2, 2);
    lights[0]->SetRange(10);
    lights[0]->SetPosition(0, 4, 0);

    //Create spot light
    lights[1] = CreateLight(world, LIGHT_SPOT);
    lights[1]->SetColor(2, 2, 2);
    lights[1]->SetRange(10);
    lights[1]->SetPosition(0, 4, 0);
    lights[1]->Turn(90, 0, 0);
    lights[1]->Hide();

    //Create directional light
    lights[2] = CreateLight(world, LIGHT_DIRECTIONAL);
    lights[2]->SetColor(2, 2, 2);
    lights[2]->SetRotation(80, 35, 0);
    lights[2]->Hide();

    //Create box light
    lights[3] = CreateLight(world, LIGHT_BOX);
    lights[3]->SetColor(2, 2, 2);
    lights[3]->SetRotation(90, 0, 0);
    lights[3]->SetPosition(0, 2, 0);
    lights[3]->SetScale(6);
    lights[3]->Hide();

    //Create strip light
    lights[4] = CreateLight(world, LIGHT_STRIP);
    lights[4]->SetPosition(0, 1, -5);
    lights[4]->SetColor(2, 2, 2);
    lights[4]->SetRange(5);
    lights[4]->SetScale(1, 1, 10);
    lights[4]->Hide();

    //Display text
    auto spritelayer = CreateSpriteLayer(world);
    camera->AddSpriteLayer(spritelayer);
    auto font = LoadFont("Fonts/arial.ttf");
    auto text = CreateText(spritelayer, font, "Press space to change light type.", 14.0 * displayscale);
    text->SetPosition(2, 2);
    auto text2 = CreateText(spritelayer, font, "Point light", 14.0 * displayscale);
    text2->SetPosition(2, 22 * displayscale);

    //Main loop
    while (!window->KeyHit(KEY_ESCAPE) and !window->Closed())
    {
        if (window->KeyHit(KEY_SPACE))
        {
            lights[currentlight]->Hide();
            currentlight++;
            if (currentlight > 4) currentlight = 0;
            lights[currentlight]->Show();
            if (currentlight == 0) text2->SetText("Point light");
            if (currentlight == 1) text2->SetText("Spot light");
            if (currentlight == 2) text2->SetText("Directional light");
            if (currentlight == 3) text2->SetText("Box light");
            if (currentlight == 4) text2->SetText("Strip light");
        }

        world->Update();
        world->Render(framebuffer);
    }
    return 0;
}