import { Mesh, Node } from './index'

// Entity is just a Mesh with extra functionality.
class Entity extends Node {
  constructor (mesh, pos, scale, rotation) {
    super(pos, scale, rotation)
    this.mesh = mesh
  }

  // Drawing related
  update (dt) {
    // Override this!
  }

  draw (gl, shader) {
    // Set model transform matrix uniform
    const modelloc = shader.getUniformLocation(gl, 'uModelMatrix')
    gl.uniformMatrix4fv(modelloc, false, this.transform)

    // Draw the mesh
    this.mesh.draw(gl, shader)
  }

  // Generators
  static async createEntity (gl, meshName, pos) {
    let mesh = await Mesh.loadFile(gl, meshName)
    let entity = new Entity(mesh, pos)
    return entity
  }
}

export default Entity