Graphics reorg done.

src/graphics/raycaster.hpp

@@ -0,0 +1,92 @@
+#pragma once
+
+#include <SFML/Graphics.hpp>
+#include <SFML/System/Clock.hpp>
+#include "algos/spatialmap.hpp"
+#include "game_level.hpp"
+#include "graphics/textures.hpp"
+
+using matrix::Matrix;
+using RGBA = uint32_t;
+
+struct CameraLOL {
+  double t = 0.0;
+  double move_speed = 0.1;
+  double rot_speed = 0.06;
+  double target_x = 0.0;
+  double target_y = 0.0;
+  double target_dir_x = 0.0;
+  double target_dir_y = 0.0;
+  double target_plane_x = 0.0;
+  double target_plane_y = 0.0;
+};
+
+struct Raycaster {
+  int $pitch=0;
+  sf::Clock $clock;
+  std::shared_ptr<sf::Shader> $brightness = nullptr;
+  double $pos_x = 0;
+  double $pos_y = 0;
+
+  // initial direction vector
+  double $dir_x = 1;
+  double $dir_y = 0;
+
+  // the 2d raycaster version of camera plane
+  double $plane_x = 0.0;
+  double $plane_y = 0.66;
+  sf::Texture $view_texture;
+  sf::Sprite $view_sprite;
+  Point aiming_at{0,0};
+  Point camera_at{0,0};
+  CameraLOL $camera;
+
+  std::unique_ptr<RGBA[]> $pixels = nullptr;
+
+  int $width;
+  int $height;
+  int $screen_pos_x = RAY_VIEW_X;
+  int $screen_pos_y = RAY_VIEW_Y;
+  std::unordered_map<DinkyECS::Entity, textures::SpriteTexture> $sprites;
+  SortedEntities $sprite_order;
+
+  GameDB::Level $level;
+  Matrix $tiles;
+  Matrix $walls;
+  std::vector<double> $zbuffer; // width
+
+  Raycaster(int width, int height);
+
+  void cast_rays();
+  void draw_ceiling_floor();
+  void draw_pixel_buffer();
+  void sprite_casting(sf::RenderTarget& target);
+  void render();
+  void draw(sf::RenderTarget& target);
+
+  void sort_sprites(std::vector<int>& order, std::vector<double>& dist, int amount);
+  void set_position(int x, int y);
+
+  inline size_t pixcoord(int x, int y) {
+    return ((y) * $width) + (x);
+  }
+
+  void update_level(GameDB::Level& level);
+  void update_sprite(DinkyECS::Entity ent, components::Sprite& sprite);
+  void init_shaders();
+
+  // camera things?
+  void position_camera(float player_x, float player_y);
+  Point plan_move(int dir, bool strafe);
+  void plan_rotate(int dir, float amount);
+
+  bool play_rotate();
+  bool play_move();
+
+  void abort_plan();
+  bool is_target(DinkyECS::Entity entity);
+  void update_camera_aiming();
+
+  // BUG: these should go away when Bug #42 is solved
+  void apply_sprite_effect(std::shared_ptr<sf::Shader> effect, float width, float height);
+};