let cube:Primitive;
let shader:Shader;
let camera:Camera;
let texture:Texture;
let n:number;

const init = () => {
  print('Main invoked');

  n = 0;

  // Create Quad
  cube = primitiveCreate();
  quadInit(cube, 0, -1, -1, 0, 0, 1, 1, 1, 1);

  // Create Camera
  camera = cameraCreate();

  // Load Shader
  shader = shaderCreate();
  assetShaderLoad(shader, "shaders/textured.vert", "shaders/textured.frag");
  
  // Texture load
  texture = textureCreate();
  assetTextureLoad(texture, "test_texture.png");
}

const update = () => {
  shaderUse(shader);
  shaderUseTexture(shader, texture);

  n += epochGetDelta();

  
  cameraLookAt(camera, 3,3,3, 0,0,0);
  cameraPerspective(camera, 45, 16/9, 0.01, 100);


  shaderUseCamera(shader, camera);
  shaderUsePosition(shader, 0,0,0, 0,n,0);
  primitiveDraw(cube, 0, -1);
}

const dispose = () => {
  cameraDispose(camera);
  shaderDispose(shader);
}