RenderComponent.h

#pragma once
#include <map>

#include "Component.h"
#include "surface.h"
#include "template.h"

typedef unsigned int Pixel;

struct RenderObject
{
  RenderObject(float x, float y, tmpl8::Sprite& sprite, tmpl8::Surface* screen) :
    pos(x, y),
    sprite(sprite),
    dst(screen)
  {}

  RenderObject(tmpl8::vec2 pos, tmpl8::Sprite& sprite, tmpl8::Surface* screen) :
    pos(pos),
    sprite(sprite),
    dst(screen)
  {}

  tmpl8::vec2 pos;
  tmpl8::Sprite& sprite;
  tmpl8::Surface* dst;
};

class RenderComponent :
  public Component
{
public:
  RenderComponent(tmpl8::Surface* surface, int numFrames) :
    sprite(surface, numFrames)
  {}

  /// <summary>
  /// queues the object for render
  /// </summary>
  /// <param name="entity"></param>
  /// <param name="screen"></param>
  void Render(Entity& entity, tmpl8::Surface& screen) override;

  /// <summary>
  /// renders the object queue
  /// </summary>
  static void RenderAll();

  /// <summary>
  /// set the frame
  /// </summary>
  /// <param name="a_Index"></param>
  void SetFrame(unsigned int a_Index);

  /// <summary>
  /// gets the width of the sprite
  /// </summary>
  /// <returns></returns>
  int GetWidth() const;

  /// <summary>
  /// gets the height of the sprite
  /// </summary>
  /// <returns></returns>
  int GetHeight() const;

  /// <summary>
  /// gets the buffer of the sprite surface location
  /// </summary>
  /// <returns></returns>
  Pixel* GetBuffer() const;

  /// <summary>
  /// gets the frames of the sprite
  /// </summary>
  /// <returns></returns>
  unsigned int Frames() const;

private:
  tmpl8::Sprite sprite;

  static std::multimap<float, RenderObject> renderQueue;
};