#ifndef SPRITE_H_70503825
#define SPRITE_H_70503825

#include <deque>
#include <map>
#include <string_view>
#include <vector>
#include "direction.h"
#include "renderer.h"
#include "vector.h"
#include "step_type.h"

enum class SpriteLayer {
  Mask,
  Normal,
  Above,
  NUM_SPRITE_LAYERS // do not use
};

struct SpriteFrame {
  SDL_Rect srcRect;
  vec2i center;
  vec2i size;
};

struct Animation {
  bool looping = true;
  std::vector<int> frameIndices;
  int timerNum = 0;
};

enum class CharacterState {
  Still,
  Walking,
  Crouching,
  Running
};

enum class CharacterMedium {
  Normal,
  Ladder,
  Water
};

enum class BehaviourType {
  None,
  Wander,
  Path,
  Follow
};

enum class MirrorType {
  None,
  Vertical
};

struct Movement {
  vec2i pos;
  Direction dir;
  CharacterMedium medium;
};

struct PathfindingInstruction {
  Direction dir;
  vec2i endpoint;
};

class Sprite {
public:

  std::string alias;
  bool persistent = false;
  bool paused = false;

  // Transform
  vec2i loc { 0, 0 };
  SpriteLayer layer = SpriteLayer::Normal;
  bool collidable = false;
  bool solid = false;
  vec2i collisionOffset;
  vec2i collisionSize;
  std::string interactionScript;
  std::string walkthroughScript;
  std::string bumpPlayerScript;
  std::string enclosureZone;
  bool sliding = false;

  // Animation (internals)
  bool isAnimated = false;
  std::string spritesheet;
  Direction dir = Direction::down;
  std::string animationName = "still";
  int animationId = 0;
  int animationFrame = 0;
  std::vector<SpriteFrame> frames;
  std::vector<Animation> animations;
  std::map<std::string, std::map<Direction, int>> nameDirToAnim;
  bool animFinished = false;
  bool hasShadow = false;
  int bobAmount = 0;
  bool bobbingDown = false;
  int animSlowdownProgress = 0;

  // Animation (controls)
  bool normallyHasShadow = false;
  bool animPaused = false;
  bool bobbing = false;
  int animSlowdown = 1; // Animation will only advance every X frames (so, 1 means it's disabled)

  // Character
  bool orientable = false;
  int movementSpeed = 0; // 1 is slow (good for NPCs), 2 is Lucas's default walking speed
  std::vector<int> followers;
  int leaderId = -1;
  std::deque<Movement> trail;
  bool trailsAreHalved = false;
  CharacterState characterState = CharacterState::Still;
  CharacterMedium characterMedium = CharacterMedium::Normal;
  Direction movementDir = Direction::down;
  StepType stepType = StepType::none;
  int runningSfxChannel = -1;
  bool clipping = false;
  bool cantCrouch = false; // Use this to prevent running
  bool bobsWhenNormal = false; // If enabled, sets the animation bobbing flag whenever medium is Normal

  // Input
  bool controllable = false;
  bool player = false;

  // Behaviour
  BehaviourType behaviourType = BehaviourType::None;
  vec2i pathfindingDestination;
  bool cardinalDirectionsOnly = false;
  std::deque<PathfindingInstruction> path;
  int followSpriteId = -1;

  // Mirror
  MirrorType mirrorType = MirrorType::None;
  int mirroredSpriteId = -1;
  int mirrorAxis = 0;
};

#endif /* end of include guard: SPRITE_H_70503825 */