#include "../common.hpp"

namespace game {
	enum {
		ET_UNIT,
		ET_EFFECT
	};

	enum {
		TILE_NONE,
		TILE_DIRT,
		TILE_WALL
	};

	enum {
		CF_BACKGROUND = 1,
		CF_SOLID      = 2,
		CF_BODY       = 4,
		CF_BODY_SMALL = 8
	};

	extern size_t selection_cookie;

	void worldgen(world::tile_t *tile, world::tile_index_t x,
	              procgen::perlin_noise_t *perlin);

	namespace assets {
		typedef struct {
			render::oriented_sprite_4M_t head_idle, body_idle;
			render::oriented_sprite_4M_t body_aiming, body_firing;
			render::oriented_sprite_4M2_t legs_idle, legs_walking;
			render::animated_texture_t dead;
		} human_assets_t;

		typedef struct {
			render::oriented_sprite_4M_t idle, walking;
			render::animated_texture_t dead;
		} alien_assets_t;

		extern human_assets_t human;
		extern alien_assets_t alien;

		void load(void);
	}

	class unit_t : public world::entity_t {
	protected:
		game::state_t *game;
		world::world_t *world;

		world::cmodel_t make_cmodel(v2f_t at);
		void compute_bounds();

		double next_targetting = -INFINITY;
		double last_attack = -INFINITY;

	public:
		v2f_t x;
		rectf_t size, render_size;
		world::cflags_t cflags;
		size_t selected = 0;

		typedef enum {
			UNIT_HUMAN,
			UNIT_ALIEN
		} type_t;

		type_t type;
		std::string name;

		unit_t(game::state_t *game_, type_t type_);

		virtual void think(void) = 0;

		struct {
			bool moving = false;
			v2f_t dst;
			float angle = 0.0f;

			std::list<v2f_t> path;

			bool blocked;
			size_t attempts_left;
			float next_attempt;
		} move;

		void place(world::world_t *world_, v2f_t x_);
		bool keep_moving(double speed);
		bool start_moving(v2f_t dst, world::cflags_t cflags);

		bool awake = false;
		double wake_time = -INFINITY;
		virtual void wake(unit_t *by_whom) = 0;
		virtual void sleep(void) = 0;

		struct {
			size_t armor_class;
			roll_params_t hit_roll;
			roll_params_t damage_roll;
		} cs;

		bool dead = false;
		double death_time = -INFINITY;
		int health = 1, max_health = 1;
		void damage(int points, unit_t *attacker);
		void try_attack(unit_t *target);
		virtual void die() = 0;

		std::string say_text;
		double say_time = -INFINITY;
		void say(std::string str);


		void render_to(render::state_t *render);

	};

	class human_t : public unit_t {
		double last_target_time = -INFINITY;
		v2f_t last_target_x;

	public:
		human_t(game::state_t *game_);
		void render_to(render::state_t *render);

		void wake(unit_t *by_whom);
		void sleep(void);
		void think(void);
		void die(void);
	};

	class alien_t : public unit_t {
		double next_targetting = -INFINITY;

	public:
		alien_t(game::state_t *game_);
		void render_to(render::state_t *render);

		void wake(unit_t *by_whom);
		void sleep(void);
		void think(void);
		void die(void);
	};

	class effect_t : public world::entity_t {
	public:
		game::state_t *game;

		double ttl = +INFINITY;
		effect_t(game::state_t *game_);
	};

	class fx_tracer_t : public effect_t {
		v2f_t x0, x1;

	public:
		fx_tracer_t(game::state_t *game_, v2f_t x0_, v2f_t x1_);
		void render_to(render::state_t *render);
	};
};