#include <stdio.h>

struct object {
	int (*condition)(struct object*);
	const char *description;
	const char **tags;
	struct object *location;
	struct object *destination;
	struct object *prospect;
	const char *details;
	const char *contents;
	const char *text_go;
	int weight;
	int capacity;
	int health;
	const char *(*open)(struct object*);
	const char *(*close)(struct object*);
	const char *(*lock)(struct object*);
	const char *(*unlock)(struct object*);
};

extern struct object objs[];

- field
	description	"an open field"
	tags		"field"
	details		"The filed is a nice and quiet place under a clear blue sky."

- cave
	description	"a little cave"
	tags		"cave"
	details		"The cave is just a cold, damp, rocky chamber."

- silver
	description	"a silver coin"
	tags		"silver", "coin", "sirver coin"
	location	field
	details		"The coin has an eagle on the obverse."
	weight		1

- gold
	description	"a gold coin"
	tags		"gold", "coin", "gold coin"
	location	cave
	details		"The shiny coin seems to be a rare and priceless artefact."
	weight		1

- guard
	description	"a burly guard"
	tags		"guard", "burly guard"
	location	field
	details		"The guard is a really big fellow."
	contents	"He has"
	health		100
	capacity	20

- player
	description	"yourself"
	tags		"me"
	location	field
	details		"You would need a mirror to look at yourself."
	contents	"You have"
	health		100
	capacity	20

- into_cave
	condition	{ return guard->health == 0 || silver->location == guard; }
	description	"a cave entrance to the east"
	tags		"east", "entrance"
	location	field
	destination	cave
	details		"The entrance is just a narrow opening in a small outcrop."
	text_go		"You walk into the cave."
	open		is_already_open

- into_cave_blocked
	condition	{ return guard->health > 0 && silver->location != guard; }
	description	"a cave entrance to the east"
	tags		"east", "entrance"
	location	field
	prospect	cave
	details		"The entrance is just a narrow opening in a small outcrop."
	text_go		"The guard stops you from walking into the cave."
	open		is_already_open

- exit_cave
	description	"a way out to the west"
	tags		"west", "out"
	location	cave
	destination	field
	details		"Sunlight pours in through an opening in the cave's wall."
	text_go		"You walk out of the cave."
	open		is_already_open

- wall_field
	description	"dense forest all around"
	tags		"west", "north", "south", "forest"
	location	field
	details		"The field is surrounded by trees and undergrowth."
	text_go		"Dense forest is blocking the way."

- wall_cave
	description	"solid rock all around"
	tags		"east", "north", "rock"
	location	cave
	details		"carved in stone is a secret password 'abccb'."
	text_go		"Solid rock is blocking the way."

- backroom
	description	"a backroom"
	tags		"backroom"
	details		"The room is dusty and messy."

- wall_backroom
	description	"solid rock all around"
	tags		"east", "west", "south", "rock"
	location	backroom
	details		"Trendy wallpaper covers the rock walls."
	text_go		"Solid rock is blocking the way."

- open_door_to_backroom
	description	"an open door to the south"
	tags		"south", "door", "doorway"
	destination	backroom
	details		"The door is open."
	text_go		"You walk through the door into the backroom."
	open		is_already_open
	close		toggle_backdoor

- closed_door_to_backroom
	description	"a closed door to the south"
	tags		"south", "door", "doorway"
	location	cave
	prospect	backroom
	details		"The door is closed."
	text_go		"The door is closed."
	open		toggle_backdoor
	close		is_already_closed

- open_door_to_cave
	description	"an open door to the north"
	tags		"north", "door", "doorway"
	destination	cave
	details		"The door is open"
	text_go		"You walk through the door into the cave."
	open		is_already_open
	close		toggle_backdoor

- closed_door_to_cave
	description	"a closed door to the north"
	tags		"north", "door", "doorway"
	location	backroom
	prospect	cave
	details		"The door is closed."
	text_go		"The door is closed."
	open		toggle_backdoor
	close		is_already_closed

- open_box
	description	"a wooden box"
	tags		"box", "wooden box"
	details		"The box is open."
	weight		5
	capacity	10
	open		is_already_open
	close		toggle_box
	lock		is_still_open
	unlock		is_already_open

- closed_box
	description	"a wooden box"
	tags		"box", "wooden box"
	details		"The box is closed."
	weight		5
	open		toggle_box
	close		is_already_closed
	lock		toggle_box_lock
	unlock		is_already_unlocked

- locked_box
	description	"a wooden box"
	tags		"box", "wooden box"
	location	backroom
	details		"The box is closed."
	weight		5
	open		is_still_locked
	close		is_already_closed
	lock		is_already_locked
	unlock		toggle_box_lock

- key_for_box
	description	"a tiny key"
	tags		"key", "tiny key"
	location	cave
	details		"The key is really small and shiny."
	weight		1

- knife
	description	"a small, rusty knife"
	tags		"knife", "rusty knife", "small knife"
	location	open_box
	details		"This knife has surely seen better times."
	weight		1