video_screen.h

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//_/_/ AERA
//_/_/ Autocatalytic Endogenous Reflective Architecture
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//_/_/ Copyright (c) 2022-2025 Jeff Thompson
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#ifndef video_screen_h
#define video_screen_h
 
#include "../r_code/object.h"
 
namespace video_screen {
 
class VideoScreen {
public:
  VideoScreen(int width, int height);
 
  ~VideoScreen() {
    delete screen_;
    if (fovea_patterns_)
      delete fovea_patterns_;
  }
 
  bool load(const std::vector<r_code::Code *> *objects);
 
  void move_eye(int delta_x, int delta_y, int& actual_delta_x, int& actual_delta_y);
 
  r_code::Code* get_fovea_pattern() const;
 
private:
  void clear_screen() {
    for (size_t i = 0; i < width_ * height_; ++i)
      screen_[i] = false;
  }
 
  bool get_screen(int x, int y) const {
    if (x < 0 || x >= width_ || y < 0 || y >= height_)
      return false;
 
    return screen_[y * width_ + x];
  }
 
  void set_screen(int x, int y, bool value) {
    if (x < 0 || x >= width_ || y < 0 || y >= height_)
      return;
 
    screen_[y * width_ + x] = value;
  }
 
  void draw_paddle(int x, int y) {
    set_screen(x, y - 1, true);
    set_screen(x, y, true);
    set_screen(x, y + 1, true);
  }
 
  void draw_ball(int x, int y) {
    // A ball is just a dot for now.
    set_screen(x, y, true);
  }
 
  int width_;
  int height_;
  bool* screen_;
  int fovea_x_;
  int fovea_y_;
  r_code::Code** fovea_patterns_;
};
 
}
#endif