#ifndef _DOS_LEMM_H
#define _DOS_LEMM_H

#include <stdint.h>

struct _state {
	uint8_t s_splatting:1;		//0x01
	uint8_t s_exploding:1;		//0x02 combinable 
	uint8_t s_falling:1;		//0x04
	uint8_t s_ascending:1;		//0x08
	uint8_t s_digging:1;		//0x10
	uint8_t s_climbing:1;		//0x20
	uint8_t s_climb_ending:1;	//0x40
	uint8_t s_building:1;		//0x80

	uint8_t s_blocking:1;		//0x01
	uint8_t s_bashing:1;		//0x02
	uint8_t s_floating:1;		//0x04
	uint8_t s_mining:1;		//0x08
	uint8_t s_drawning:1;		//0x10
	uint8_t s_ending:1;		//0x20
	uint8_t s_dying:1;		//0x40
	uint8_t s_exploding2:1;		//0x80
} __attribute__ ((__packed__));

union state {
	uint16_t raw;
	struct _state bits;
};

enum state_masks {
	s_splatting	= 0x01,
	s_exploding	= 0x02,
	s_falling	= 0x04,
	s_ascending	= 0x08,
	s_digging	= 0x10,
	s_climbing	= 0x20,
	s_climb_ending	= 0x40,
	s_building	= 0x80,

	s_blocking	= 0x0100,
	s_bashing	= 0x0200,
	s_floating	= 0x0400,
	s_mining	= 0x0800,
	s_drawning	= 0x1000,
	s_ending	= 0x2000,
	s_dying		= 0x4000,
	s_exploding2	= 0x8000
};

struct _flags1 {
	uint8_t fl1_cap_climber:1;	// 0x01
	uint8_t fl1_unused:6;
	uint8_t fl1_walk_pause_for_shruggling:1; // 0x80
} __attribute__ ((__packed__));

union flags1 {
	uint8_t raw;
	struct _flags1 bits;
};

enum flags1_masks {
	fl1_cap_climber = 0x01,
	fl1_walk_pause_for_shruggling = 0x80
};

struct _lemm_data {
	/* First lemm is at ds:si == 0b55:0085 */
	uint16_t x_effective;	//0x0 - 0x1
	uint16_t y_effective;	//0x2 - 0x3
	int16_t x_spr_offset;	//0x4 - 0x5
	int16_t y_spr_offset;	//0x6 - 0x7
	union state state;	//0x8 - 0x9
	uint8_t unk1[0x2];
	uint16_t spr_data_ptr;	//0xc - 0xd
	uint8_t floattime_dble;	//0xe
	uint8_t unk2[0x5];
	uint16_t ptr2;		//0x14 - 0x15
	uint8_t unk3[0xa];
	uint8_t expl_countdown;	//0x20
	uint8_t steps_remain;	//0x21
	uint8_t unk4;
	uint8_t falldist;	//0x23
	union flags1 flags1;	//0x24
	uint8_t cap_floater;	//0x25
	uint8_t is_gone;	//0x26
	int8_t direction;	//0x27
	uint8_t spr_frame;	//0x28
	uint8_t draw_hint;	//0x29
	uint8_t unk5[0x3];
} __attribute__ ((__packed__));

union lemm_data {
	unsigned char raw[0x2d];
	struct _lemm_data s;
};

enum draw_hint {
	hint_nothing=0x00, hint_falling=0x04, hint_special1=0x08, /* climbing or slow falling or shruggling */
	hint_walking=0x09, hint_building=0x10, hint_mining=0x18, hint_bashing=0x20
};

struct _avail_skills {
	uint8_t sk_climber, sk_climber2, sk_climber_tag;	// [0x67]
	uint8_t sk_floater, sk_floater2, sk_floater_tag;	// [0x6a]
	uint8_t sk_bomber, sk_bomber2, sk_bomber_tag	;	// [0x6d]
	uint8_t sk_blocker, sk_blocker2, sk_blocker_tag;	// [0x70]
	uint8_t sk_builder, sk_builder2, sk_builder_tag;	// [0x73]
	uint8_t sk_basher, sk_basher2, sk_basher_tag;		// [0x76]
	uint8_t sk_miner, sk_miner2, sk_miner_tag;		// [0x79]
	uint8_t sk_digger, sk_digger2, sk_digger_tag;		// [0x7c]
} __attribute__ ((__packed__)); 

struct game_data {
	/* ds == 0x0b55 */
	uint8_t unk1[0x27];			// TODO
	uint8_t paused;				// [0x28]
	uint8_t unk2[0x10];			// TODO
	uint8_t lemm_count_to_process;		// [0x39]
	uint8_t lemm_spawned_count;		// [0x40]
	uint8_t unk3;				// TODO
	uint8_t lemm_out_count;			// [0x42]
	uint8_t unk4;				// TODO
	uint8_t lemm_level_count;		// [0x44]
	uint8_t next_spawn_ticks;		// [0x45]
	uint8_t spawn_rate_ticks;		// [0x46]
	uint8_t unk5[0x20];			// TODO
	struct _avail_skills avail_skills;	// [0x67] - [0x7e]
	uint8_t unk6[0x06];			// TODO
	struct _lemm_data lemmings[100];	// [0x85]
} __attribute__ ((__packed__));
	
#endif /*_DOS_LEMM_H*/