xabina/xabina.adb

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-- Copyright (c) 2023 - Ognjen 'xolatile' Milan Robovic
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-- Xabina is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either
-- version 3 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the
-- implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
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-- Experimental minimal terminal rogue-like game in Ada programming language. I used to write a lot of Ada programs some time ago, then went in full C and assembly mode, and came
-- back to Ada, but realized that I keep my folders messy... Since it's bothersome to find my old Ada projects and share them here, I decided that the most easy thing to do is to
-- write a new program in Ada, a tiny game. Work in progress, it's messy and ugly for now...
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with ada.text_io;
use  ada.text_io;

-- Do not use this command below, it's for real-time game...
-- $ gnatmake xabina.adb
-- $ stty raw -echo && ./xabina && stty sane

function xabina return integer is

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-- System
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	COLOUR_GREY   : constant character := '0';
	COLOUR_RED    : constant character := '1';
	COLOUR_GREEN  : constant character := '2';
	COLOUR_YELLOW : constant character := '3';
	COLOUR_BLUE   : constant character := '4';
	COLOUR_PINK   : constant character := '5';
	COLOUR_CYAN   : constant character := '6';
	COLOUR_WHITE  : constant character := '7';

	EFFECT_NORMAL    : constant character := '0';
	EFFECT_BOLD      : constant character := '1';
	EFFECT_ITALIC    : constant character := '3';
	EFFECT_UNDERLINE : constant character := '4';
	EFFECT_BLINK     : constant character := '5';
	EFFECT_REVERSE   : constant character := '7';

	CANCEL          : constant character := character'val (24);
	CARRIAGE_RETURN : constant character := character'val (10);
	LINE_FEED       : constant character := character'val (13);
	ESCAPE          : constant character := character'val (27);

                                             ------------------------------------------------------------------------------------------

	procedure action_idle;

	type procedure_pointer is access procedure;
	type ascii_range       is mod 2 ** 8;
	type action_data       is array (ascii_range) of procedure_pointer;

	type screen_width  is mod 120;
	type screen_height is mod  40;

	type screen_type is array (screen_height, screen_width) of character;

                                             ------------------------------------------------------------------------------------------

	active : boolean   := true;
	signal : character := ' ';

	action_list : action_data := (others => action_idle'access);

	screen_symbol : screen_type := (others => (others => CANCEL));
	screen_colour : screen_type := (others => (others => COLOUR_WHITE));
	screen_effect : screen_type := (others => (others => EFFECT_NORMAL));

                                             ------------------------------------------------------------------------------------------

	procedure bind (symbol : character         := CANCEL;
	                action : procedure_pointer := action_idle'access) is
	begin
		action_list (character'pos (symbol)) := action;
	end bind;

	procedure unbind (symbol : character := CANCEL) is
	begin
		action_list (character'pos (symbol)) := action_idle'access;
	end unbind;

	procedure action_idle is begin null;            end action_idle;
	procedure action_exit is begin active := false; end action_exit;

	procedure render_screen_delete is begin put (ESCAPE & "[2J");              end render_screen_delete;
	procedure render_screen_offset is begin put (ESCAPE & "[H");               end render_screen_offset;
	procedure render_cursor_hide   is begin put (ESCAPE & "[?25l");            end render_cursor_hide;
	procedure render_cursor_show   is begin put (ESCAPE & "[?25h");            end render_cursor_show;
	procedure render_realignment   is begin put (CARRIAGE_RETURN & LINE_FEED); end render_realignment;

	procedure render_character (symbol : character     := ' ';
	                            colour : character     := COLOUR_WHITE;
	                            effect : character     := EFFECT_NORMAL;
	                            y      : screen_height := 0;
	                            x      : screen_width  := 0) is
	begin
		screen_symbol (y, x) := symbol;
		screen_colour (y, x) := colour;
		screen_effect (y, x) := effect;
	end render_character;

	procedure render_screen is
		format : string (1 .. 12) := ESCAPE & "[E;3CmS" & ESCAPE & "[0m";
	begin
		render_screen_offset;
		for y in screen_height
		loop
			for x in screen_width
			loop
				format (8) := screen_symbol (y, x);
				format (6) := screen_colour (y, x);
				format (3) := screen_effect (y, x);
				put (format);
			end loop;
			render_realignment;
		end loop;
	end render_screen;

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-- Entity
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	type entity_list is (
		ENTITY_NULL,        ENTITY_MENU,        ENTITY_MAP,         ENTITY_ITEM,        ENTITY_MAGIC,       ENTITY_AMMUNITION,  ENTITY_WEAPON,      ENTITY_ARMOUR,
		ENTITY_SCROLL,      ENTITY_POTION,      ENTITY_CONSUMABLE,  ENTITY_NOTE,        ENTITY_PLANT,       ENTITY_ANIMAL,      ENTITY_GOBLIN,      ENTITY_PLAYER
	);

                                             ------------------------------------------------------------------------------------------

	type entity_constant_type is tagged
	record
		entity : entity_list      := ENTITY_NULL;            -- Entity identifier.
		name   : string (1 .. 20) := "-                   "; -- Entity general name.
		symbol : character        := ' ';                    -- Entity ASCII character representation.
		colour : character        := COLOUR_WHITE;           -- Entity VT100 escape sequence colour.
		effect : character        := EFFECT_NORMAL;          -- Entity VT100 escape sequence effect.
	end record;

	type entity_variable_type is tagged
	record
		x : integer := 0; -- Global X coordinate.
		y : integer := 0; -- Global Y coordinate.
	end record;

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-- Menu
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-- Map
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	type map_list is (
		MAP_STONE_WALL,     MAP_WOODEN_WALL,    MAP_STONE_FLOOR,    MAP_WOODEN_FLOOR,   MAP_WATER_SHALLOW,  MAP_WATER_DEEP,     MAP_SWAMP_SHALLOW,  MAP_SWAMP_DEEP
	);

                                             ------------------------------------------------------------------------------------------

	type map_width  is mod 120;
	type map_height is mod  40;

	type map_constant_type is new entity_constant_type with
	record
		collide : boolean := false;
	end record;

	type map_constant_list is array (map_list)              of map_constant_type;
	type map_variable_list is array (map_height, map_width) of map_list;

                                             ------------------------------------------------------------------------------------------

	map_constant_data : constant map_constant_list := (
		(ENTITY_MAP, "Stone Wall          ", '#', COLOUR_GREY,   EFFECT_BOLD,   true),
		(ENTITY_MAP, "Wooden Wall         ", '#', COLOUR_YELLOW, EFFECT_NORMAL, true),
		(ENTITY_MAP, "Stone Floor         ", '.', COLOUR_GREY,   EFFECT_BOLD,   false),
		(ENTITY_MAP, "Wooden Floor        ", '.', COLOUR_YELLOW, EFFECT_NORMAL, false),
		(ENTITY_MAP, "Water (shallow)     ", '~', COLOUR_BLUE,   EFFECT_NORMAL, false),
		(ENTITY_MAP, "Water (deep)        ", '~', COLOUR_BLUE,   EFFECT_BOLD,   true),
		(ENTITY_MAP, "Swamp (shallow)     ", '~', COLOUR_GREEN,  EFFECT_NORMAL, false),
		(ENTITY_MAP, "Swamp (deep)        ", '~', COLOUR_GREEN,  EFFECT_BOLD,   true)
	);

	map_variable_data : map_variable_list;

                                             ------------------------------------------------------------------------------------------

	procedure generate_map is
	begin
		for y in map_height
		loop
			for x in map_width
			loop
				map_variable_data (y, x) := MAP_STONE_FLOOR;
			end loop;
		end loop;
	end generate_map;

	procedure render_map is
		symbol : character := ' ';
		colour : character := COLOUR_WHITE;
		effect : character := EFFECT_NORMAL;
	begin
		for y in screen_height
		loop
			for x in screen_width
			loop
				symbol := map_constant_data (map_variable_data (map_height (y), map_width (x))).symbol;
				colour := map_constant_data (map_variable_data (map_height (y), map_width (x))).colour;
				effect := map_constant_data (map_variable_data (map_height (y), map_width (x))).effect;
				render_character (symbol, colour, effect, y, x);
			end loop;
		end loop;
	end render_map;

------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
-- Item
------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

	type item_list is (
		WOOD,               BARK,               FLAX,               PLANK,              STICK,              BRACES,             NAILS,              LINEN,
		CHAMOMILE,          MINT,               WAX,                SALT,               SUGAR,              PEPPER,             CINNAMON,           YEAST,
		SKULL,              BONE,               INTESTINES,         FUR,                LEATHER,            FAT,                HORN,               TUSK,
		COPPER_ORE,         IRON_ORE,           SILVER_ORE,         GOLD_ORE,           COAL_ORE,           TIN_ORE,            ZINC_ORE,           LEAD_ORE,
		COPPER,             IRON,               SILVER,             GOLD,               COAL,               TIN,                ZINC,               LEAD,
		BRONZE,             BRASS,              STEEL,              MERCURY,            OIL,                INK,                VENOM,              SILK,
		PAPERS,             PAPERWEIGHT
	);

                                             ------------------------------------------------------------------------------------------

	type item_mark is mod 72;

	type item_constant_type is new entity_constant_type with
	record
		value  : natural := 0;
		weight : natural := 0;
	end record;

	type item_variable_type is new entity_variable_type with
	record
		owner : natural := 0;
	end record;

	type item_constant_list is array (item_list) of item_constant_type;
	type item_variable_list is array (item_mark) of item_variable_type;

                                             ------------------------------------------------------------------------------------------

	item_constant_data : constant item_constant_list := (
		(ENTITY_ITEM, "Wood                ", '+', COLOUR_YELLOW, EFFECT_NORMAL,  2,  2),
		(ENTITY_ITEM, "Bark                ", '+', COLOUR_YELLOW, EFFECT_NORMAL,  1,  2),
		(ENTITY_ITEM, "Flax                ", '+', COLOUR_YELLOW, EFFECT_NORMAL,  3,  1),
		(ENTITY_ITEM, "Plank               ", '+', COLOUR_YELLOW, EFFECT_NORMAL,  2,  2),
		(ENTITY_ITEM, "Stick               ", '+', COLOUR_YELLOW, EFFECT_NORMAL,  2,  2),
		(ENTITY_ITEM, "Braces              ", '+', COLOUR_YELLOW, EFFECT_NORMAL,  2,  1),
		(ENTITY_ITEM, "Nails               ", '+', COLOUR_YELLOW, EFFECT_NORMAL,  1,  1),
		(ENTITY_ITEM, "Linen               ", '+', COLOUR_YELLOW, EFFECT_NORMAL, 23,  1),
		(ENTITY_ITEM, "Chamomile           ", '+', COLOUR_YELLOW, EFFECT_NORMAL,  3,  1),
		(ENTITY_ITEM, "Mint                ", '+', COLOUR_YELLOW, EFFECT_NORMAL,  5,  1),
		(ENTITY_ITEM, "Wax                 ", '+', COLOUR_YELLOW, EFFECT_NORMAL,  7,  1),
		(ENTITY_ITEM, "Salt                ", '+', COLOUR_YELLOW, EFFECT_NORMAL, 13,  1),
		(ENTITY_ITEM, "Sugar               ", '+', COLOUR_YELLOW, EFFECT_NORMAL, 17,  1),
		(ENTITY_ITEM, "Pepper              ", '+', COLOUR_YELLOW, EFFECT_NORMAL, 11,  1),
		(ENTITY_ITEM, "Cinnamon            ", '+', COLOUR_YELLOW, EFFECT_NORMAL, 23,  1),
		(ENTITY_ITEM, "Yeast               ", '+', COLOUR_YELLOW, EFFECT_NORMAL,  5,  1),
		(ENTITY_ITEM, "Skull               ", '+', COLOUR_YELLOW, EFFECT_NORMAL,  2,  1),
		(ENTITY_ITEM, "Bone                ", '+', COLOUR_YELLOW, EFFECT_NORMAL,  1,  1),
		(ENTITY_ITEM, "Intestines          ", '+', COLOUR_YELLOW, EFFECT_NORMAL,  1,  1),
		(ENTITY_ITEM, "Fur                 ", '+', COLOUR_YELLOW, EFFECT_NORMAL,  7,  2),
		(ENTITY_ITEM, "Leather             ", '+', COLOUR_YELLOW, EFFECT_NORMAL,  3,  1),
		(ENTITY_ITEM, "Fat                 ", '+', COLOUR_YELLOW, EFFECT_NORMAL,  1,  1),
		(ENTITY_ITEM, "Horn                ", '+', COLOUR_YELLOW, EFFECT_NORMAL,  2,  1),
		(ENTITY_ITEM, "Tusk                ", '+', COLOUR_YELLOW, EFFECT_NORMAL,  3,  5),
		(ENTITY_ITEM, "Copper Ore          ", '+', COLOUR_YELLOW, EFFECT_NORMAL,  5,  7),
		(ENTITY_ITEM, "Iron Ore            ", '+', COLOUR_YELLOW, EFFECT_NORMAL,  7, 11),
		(ENTITY_ITEM, "Silver Ore          ", '+', COLOUR_YELLOW, EFFECT_NORMAL, 17,  7),
		(ENTITY_ITEM, "Gold Ore            ", '+', COLOUR_YELLOW, EFFECT_NORMAL, 23,  7),
		(ENTITY_ITEM, "Coal Ore            ", '+', COLOUR_YELLOW, EFFECT_NORMAL,  2,  7),
		(ENTITY_ITEM, "Tin Ore             ", '+', COLOUR_YELLOW, EFFECT_NORMAL, 13,  7),
		(ENTITY_ITEM, "Zinc Ore            ", '+', COLOUR_YELLOW, EFFECT_NORMAL, 13,  7),
		(ENTITY_ITEM, "Lead Ore            ", '+', COLOUR_YELLOW, EFFECT_NORMAL, 11, 13),
		(ENTITY_ITEM, "Copper              ", '+', COLOUR_YELLOW, EFFECT_NORMAL, 17,  5),
		(ENTITY_ITEM, "Iron                ", '+', COLOUR_YELLOW, EFFECT_NORMAL, 19,  7),
		(ENTITY_ITEM, "Silver              ", '+', COLOUR_YELLOW, EFFECT_NORMAL, 23,  5),
		(ENTITY_ITEM, "Gold                ", '+', COLOUR_YELLOW, EFFECT_NORMAL, 29,  5),
		(ENTITY_ITEM, "Coal                ", '+', COLOUR_YELLOW, EFFECT_NORMAL, 19,  5),
		(ENTITY_ITEM, "Tin                 ", '+', COLOUR_YELLOW, EFFECT_NORMAL, 11,  5),
		(ENTITY_ITEM, "Zinc                ", '+', COLOUR_YELLOW, EFFECT_NORMAL, 13,  5),
		(ENTITY_ITEM, "Lead                ", '+', COLOUR_YELLOW, EFFECT_NORMAL, 47,  7),
		(ENTITY_ITEM, "Bronze              ", '+', COLOUR_YELLOW, EFFECT_NORMAL, 61,  5),
		(ENTITY_ITEM, "Brass               ", '+', COLOUR_YELLOW, EFFECT_NORMAL, 67,  5),
		(ENTITY_ITEM, "Steel               ", '+', COLOUR_YELLOW, EFFECT_NORMAL, 71,  7),
		(ENTITY_ITEM, "Mercury             ", '+', COLOUR_YELLOW, EFFECT_NORMAL, 97, 11),
		(ENTITY_ITEM, "Oil                 ", '+', COLOUR_YELLOW, EFFECT_NORMAL,  5,  1),
		(ENTITY_ITEM, "Ink                 ", '+', COLOUR_YELLOW, EFFECT_NORMAL, 13,  1),
		(ENTITY_ITEM, "Venom               ", '+', COLOUR_YELLOW, EFFECT_NORMAL, 11,  1),
		(ENTITY_ITEM, "Silk                ", '+', COLOUR_YELLOW, EFFECT_NORMAL, 13,  1),
		(ENTITY_ITEM, "Papers              ", '+', COLOUR_YELLOW, EFFECT_NORMAL,  1,  1),
		(ENTITY_ITEM, "Paperweight         ", '+', COLOUR_YELLOW, EFFECT_NORMAL,  2,  1)
	);

	item_variable_data : item_variable_list;

------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
-- Spell
-- -- Place-holders mostly, implement self/target/target_range effect variations...
------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

	type magic_list is (
		IGNITE,             ILLUMINATE,         BLADECHARM,         BATTLECRY
	);

                                             ------------------------------------------------------------------------------------------

	type magic_mark is mod 72;

	type magic_constant_type is new entity_constant_type with
	record
		self     : boolean := false;
		health   : integer := 0;
		armour   : integer := 0;
		mana     : integer := 0;
		stamina  : integer := 0;
		distance : integer := 0;
		tribute  : natural := 0;
	end record;

	type magic_variable_type is new entity_variable_type with
	record
		enchantment : natural := 0;
	end record;

	type magic_constant_list is array (magic_list) of magic_constant_type;
	type magic_variable_list is array (magic_mark) of magic_variable_type;

                                             ------------------------------------------------------------------------------------------

	magic_constant_data : constant magic_constant_list := (
		(ENTITY_MAGIC, "Ignite              ", '*', COLOUR_YELLOW, EFFECT_ITALIC, false, -3,  0,  0, -1,  7,  1),
		(ENTITY_MAGIC, "Illuminate          ", '*', COLOUR_YELLOW, EFFECT_ITALIC, false,  0,  0,  0, -1, 13,  1),
		(ENTITY_MAGIC, "Bladecharm          ", '*', COLOUR_RED,    EFFECT_ITALIC, true,   0, -3,  0, -1,  7,  3),
		(ENTITY_MAGIC, "Battlecry           ", '*', COLOUR_RED,    EFFECT_ITALIC, true,  -1, -1,  0, -1,  7,  2)
	);

	magic_variable_data : magic_variable_list;

------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
-- Ammunition
------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

	type ammunition_list is (
		ARROWS,             BOLTS,              SLINGSHOTS,         JARIDS
	);

                                             ------------------------------------------------------------------------------------------

	type ammunition_mark is mod 72;

	type ammunition_constant_type is new entity_constant_type with
	record
		value          : natural := 0;
		weight         : natural := 0;
		dual_wield     : boolean := false;
		amount_limit   : natural := 0;
		attack_range   : natural := 0;
		distance_range : natural := 0;
	end record;

	type ammunition_variable_type is new entity_variable_type with
	record
		amount      : natural := 0;
		enchantment : natural := 0;
	end record;

	type ammunition_constant_list is array (ammunition_list) of ammunition_constant_type;
	type ammunition_variable_list is array (ammunition_mark) of ammunition_variable_type;

                                             ------------------------------------------------------------------------------------------

	ammunition_constant_data : constant ammunition_constant_list := (
		(ENTITY_AMMUNITION, "Arrows              ", '^', COLOUR_RED, EFFECT_NORMAL, 11, 13, false, 23,  7, 67),
		(ENTITY_AMMUNITION, "Bolts               ", '^', COLOUR_RED, EFFECT_NORMAL, 13, 23, false, 29,  5, 67),
		(ENTITY_AMMUNITION, "Slingshots          ", '^', COLOUR_RED, EFFECT_NORMAL,  5,  7, true,  43,  7, 67),
		(ENTITY_AMMUNITION, "Jarids              ", '^', COLOUR_RED, EFFECT_NORMAL, 29, 37, true,   7,  7, 67)
	);

	ammunition_variable_data : ammunition_variable_list;

------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
-- Weapon
------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

	type weapon_list is (
		IRON_SWORD,         IRON_GREATSWORD,    IRON_AXE,           IRON_BATTLEAXE,     IRON_SPEAR,         IRON_SHIELD,        IRON_MACE,          IRON_HAMMER,
		BRONZE_SWORD,       BRONZE_GREATSWORD,  BRONZE_AXE,         BRONZE_BATTLEAXE,   BRONZE_SPEAR,       BRONZE_SHIELD,      BRONZE_MACE,        BRONZE_HAMMER,
		BRASS_SWORD,        BRASS_GREATSWORD,   BRASS_AXE,          BRASS_BATTLEAXE,    BRASS_SPEAR,        BRASS_SHIELD,       BRASS_MACE,         BRASS_HAMMER
	);

                                             ------------------------------------------------------------------------------------------

	type weapon_mark is mod 72;

	type weapon_constant_type is new entity_constant_type with
	record
		dual_wield     : boolean := false;
		value          : natural := 0;
		weight         : natural := 0;
		attack_range   : natural := 0;
		defense_range  : natural := 0;
		distance_range : natural := 0;
	end record;

	type weapon_variable_type is new entity_variable_type with
	record
		enchantment : natural := 0;
		condition   : natural := 0;
	end record;

	type weapon_constant_list is array (weapon_list) of weapon_constant_type;
	type weapon_variable_list is array (weapon_mark) of weapon_variable_type;

                                             ------------------------------------------------------------------------------------------

	weapon_constant_data : constant weapon_constant_list := (
		(ENTITY_WEAPON, "Iron Sword          ", 'l', COLOUR_RED, EFFECT_NORMAL, true,  11, 31,  7,  2,  1),
		(ENTITY_WEAPON, "Iron Greatsword     ", 'L', COLOUR_RED, EFFECT_BOLD,   false, 23, 67, 11,  3,  2),
		(ENTITY_WEAPON, "Iron Axe            ", 'r', COLOUR_RED, EFFECT_NORMAL, true,  13, 43,  7,  2,  1),
		(ENTITY_WEAPON, "Iron Battleaxe      ", 'T', COLOUR_RED, EFFECT_BOLD,   false, 19, 73, 13,  2,  2),
		(ENTITY_WEAPON, "Iron Spear          ", 'I', COLOUR_RED, EFFECT_BOLD,   false, 17, 53, 10,  4,  2),
		(ENTITY_WEAPON, "Iron Shield         ", 'o', COLOUR_RED, EFFECT_NORMAL, true,  13, 37,  3,  9,  1),
		(ENTITY_WEAPON, "Iron Mace           ", 'i', COLOUR_RED, EFFECT_NORMAL, true,  11, 41,  8,  2,  1),
		(ENTITY_WEAPON, "Iron Hammer         ", 't', COLOUR_RED, EFFECT_NORMAL, true,  13, 47,  7,  3,  1),
		(ENTITY_WEAPON, "Bronze Sword        ", 'l', COLOUR_RED, EFFECT_NORMAL, true,  11, 31,  7,  2,  1),
		(ENTITY_WEAPON, "Bronze Greatsword   ", 'L', COLOUR_RED, EFFECT_BOLD,   false, 23, 67, 11,  3,  2),
		(ENTITY_WEAPON, "Bronze Axe          ", 'r', COLOUR_RED, EFFECT_NORMAL, true,  13, 43,  7,  2,  1),
		(ENTITY_WEAPON, "Bronze Battleaxe    ", 'T', COLOUR_RED, EFFECT_BOLD,   false, 19, 73, 13,  2,  2),
		(ENTITY_WEAPON, "Bronze Spear        ", 'I', COLOUR_RED, EFFECT_BOLD,   false, 17, 53, 10,  4,  2),
		(ENTITY_WEAPON, "Bronze Shield       ", 'o', COLOUR_RED, EFFECT_NORMAL, true,  13, 37,  3,  9,  1),
		(ENTITY_WEAPON, "Bronze Mace         ", 'i', COLOUR_RED, EFFECT_NORMAL, true,  11, 41,  8,  2,  1),
		(ENTITY_WEAPON, "Bronze Hammer       ", 't', COLOUR_RED, EFFECT_NORMAL, true,  13, 47,  7,  3,  1),
		(ENTITY_WEAPON, "Brass Sword         ", 'l', COLOUR_RED, EFFECT_NORMAL, true,  11, 31,  7,  2,  1),
		(ENTITY_WEAPON, "Brass Greatsword    ", 'L', COLOUR_RED, EFFECT_BOLD,   false, 23, 67, 11,  3,  2),
		(ENTITY_WEAPON, "Brass Axe           ", 'r', COLOUR_RED, EFFECT_NORMAL, true,  13, 43,  7,  2,  1),
		(ENTITY_WEAPON, "Brass Battleaxe     ", 'T', COLOUR_RED, EFFECT_BOLD,   false, 19, 73, 13,  2,  2),
		(ENTITY_WEAPON, "Brass Spear         ", 'I', COLOUR_RED, EFFECT_BOLD,   false, 17, 53, 10,  4,  2),
		(ENTITY_WEAPON, "Brass Shield        ", 'o', COLOUR_RED, EFFECT_NORMAL, true,  13, 37,  3,  9,  1),
		(ENTITY_WEAPON, "Brass Mace          ", 'i', COLOUR_RED, EFFECT_NORMAL, true,  11, 41,  8,  2,  1),
		(ENTITY_WEAPON, "Brass Hammer        ", 't', COLOUR_RED, EFFECT_NORMAL, true,  13, 47,  7,  3,  1)
	);

	weapon_variable_data : weapon_variable_list;

------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
-- Armour
------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

	type armour_list is (
		IRON_HELMET,        IRON_CHESTPLATE,    IRON_GAUNTLETS,     IRON_GREAVES,       IRON_CUISSE,        IRON_FAULD,         IRON_GARDBRACE,     IRON_REREBRACE
	);

                                             ------------------------------------------------------------------------------------------

	type armour_mark is mod 72;

	type armour_constant_type is new entity_constant_type with
	record
		value         : natural := 0;
		weight        : natural := 0;
		defense_range : natural := 0;
	end record;

	type armour_variable_type is new entity_variable_type with
	record
		enchantment : natural := 0;
		condition   : natural := 0;
	end record;

	type armour_constant_list is array (armour_list) of armour_constant_type;
	type armour_variable_list is array (armour_mark) of armour_variable_type;

                                             ------------------------------------------------------------------------------------------

	armour_constant_data : constant armour_constant_list := (
		(ENTITY_ARMOUR, "Iron Helmet         ", 'm', COLOUR_YELLOW, EFFECT_NORMAL, 11, 31,  7),
		(ENTITY_ARMOUR, "Iron Chestplate     ", 'M', COLOUR_YELLOW, EFFECT_BOLD,   23, 67, 11),
		(ENTITY_ARMOUR, "Iron Gauntlets      ", 'i', COLOUR_YELLOW, EFFECT_NORMAL, 13, 43,  7),
		(ENTITY_ARMOUR, "Iron Greaves        ", 'I', COLOUR_YELLOW, EFFECT_NORMAL, 19, 73, 13),
		(ENTITY_ARMOUR, "Iron Cuisse         ", 'Y', COLOUR_YELLOW, EFFECT_BOLD,   17, 53, 10),
		(ENTITY_ARMOUR, "Iron Fauld          ", '-', COLOUR_YELLOW, EFFECT_NORMAL, 13, 37,  3),
		(ENTITY_ARMOUR, "Iron Gardbrace      ", 'v', COLOUR_YELLOW, EFFECT_NORMAL, 11, 41,  8),
		(ENTITY_ARMOUR, "Iron Rerebrace      ", 'V', COLOUR_YELLOW, EFFECT_NORMAL, 13, 47,  7)
	);

	armour_variable_data : armour_variable_list;

------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
-- Scroll
------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
-- Potion
------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
-- Consumable
------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
-- Note
------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
-- Plant
------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

	type plant_list is (
		OAK_TREE,           PINE_TREE,          BIRCH_TREE,         ACACIA_TREE,        APPLE_TREE,         PEACH_TREE,         ORANGE_TREE,        PEAR_TREE,
		BUSH,               THORNY_BUSH,        TALL_GRASS,         REED
	);

                                             ------------------------------------------------------------------------------------------

	type plant_mark is mod 72;

	type plant_constant_type is new entity_constant_type with
	record
		health_limit : natural := 0;
	end record;

	type plant_variable_type is new entity_variable_type with
	record
		health : natural := 0;
	end record;

	type plant_constant_list is array (plant_list) of plant_constant_type;
	type plant_variable_list is array (plant_mark) of plant_variable_type;

                                             ------------------------------------------------------------------------------------------

	plant_constant_data : constant plant_constant_list := (
		(ENTITY_PLANT, "Oak Tree            ", 'T', COLOUR_GREEN, EFFECT_BOLD,   11),
		(ENTITY_PLANT, "Pine Tree           ", 'T', COLOUR_GREEN, EFFECT_BOLD,   23),
		(ENTITY_PLANT, "Birch Tree          ", 'T', COLOUR_GREEN, EFFECT_BOLD,   13),
		(ENTITY_PLANT, "Acacia Tree         ", 'T', COLOUR_GREEN, EFFECT_BOLD,   19),
		(ENTITY_PLANT, "Apple Tree          ", 'T', COLOUR_GREEN, EFFECT_BOLD,   17),
		(ENTITY_PLANT, "Peach Tree          ", 'T', COLOUR_GREEN, EFFECT_BOLD,   13),
		(ENTITY_PLANT, "Orange Tree         ", 'T', COLOUR_GREEN, EFFECT_BOLD,   11),
		(ENTITY_PLANT, "Pear Tree           ", 'T', COLOUR_GREEN, EFFECT_BOLD,   13),
		(ENTITY_PLANT, "Bush                ", '&', COLOUR_GREEN, EFFECT_NORMAL,  5),
		(ENTITY_PLANT, "Thorny Bush         ", '&', COLOUR_GREEN, EFFECT_NORMAL,  7),
		(ENTITY_PLANT, "Tall Grass          ", '%', COLOUR_GREEN, EFFECT_NORMAL,  3),
		(ENTITY_PLANT, "Reed                ", '%', COLOUR_GREEN, EFFECT_NORMAL,  3)
	);

	plant_variable_data : plant_variable_list;

------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
-- Animal
------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

	type animal_list is (
		ANIMAL_PIG,         ANIMAL_COW,         ANIMAL_CHICKEN,     ANIMAL_SHEEP,       ANIMAL_BOAR,        ANIMAL_GOAT,        ANIMAL_AUROCH,      ANIMAL_DUCK,
		ANIMAL_DOG,         ANIMAL_CAT,         ANIMAL_RABBIT,      ANIMAL_HAMSTER,     ANIMAL_HORSE,       ANIMAL_DONKEY,      ANIMAL_CAMEL,       ANIMAL_ELEPHANT,
		ANIMAL_OWL,         ANIMAL_HAWK,        ANIMAL_PIGEON,      ANIMAL_VULTURE,     ANIMAL_CROW,        ANIMAL_PHEASANT,    ANIMAL_SPARROW,     ANIMAL_ALBATROSS,
		ANIMAL_SARDINE,     ANIMAL_HERRING,     ANIMAL_CATFISH,     ANIMAL_CARP,        ANIMAL_WHALE,       ANIMAL_SHARK,       ANIMAL_SQUID,       ANIMAL_SAWFISH,
		ANIMAL_WORM,        ANIMAL_BEE,         ANIMAL_CENTIPEDE,   ANIMAL_SPIDER,      ANIMAL_FROG,        ANIMAL_RAT,         ANIMAL_BAT,         ANIMAL_MOLE,
		ANIMAL_WOLF,        ANIMAL_FOX,         ANIMAL_BEAR,        ANIMAL_MAMMOTH,     ANIMAL_ELK,         ANIMAL_MOOSE,       ANIMAL_DEER,        ANIMAL_PEEBLES,
		ANIMAL_LION,        ANIMAL_HYENA,       ANIMAL_BISON,       ANIMAL_ZEBRA,       ANIMAL_GIRAFFE,     ANIMAL_CROCODILE,   ANIMAL_MONKEY,      ANIMAL_GNU,
		ANIMAL_CARIBOU,     ANIMAL_SEAL,        ANIMAL_MORSE,       ANIMAL_PENGUIN,     ANIMAL_TURTLE,      ANIMAL_CAYMAN,      ANIMAL_OTTER,       ANIMAL_SNAKE,
		ANIMAL_LIZARD,      ANIMAL_DAEODON,     ANIMAL_SLIME,       ANIMAL_AXOLOTL,     ANIMAL_HEDGEHOG,    ANIMAL_CATERPILLAR, ANIMAL_CRAB,        ANIMAL_SCORPION,
		ANIMAL_GIANT_LIZARD,                    ANIMAL_GIANT_CENTIPEDE,                 ANIMAL_GIANT_SPIDER,                    ANIMAL_GIANT_SLOTH,
		ANIMAL_GIANT_OWL,                       ANIMAL_GIANT_SCORPION,                  ANIMAL_GIANT_AXOLOTL,                   ANIMAL_GIANT_WORM
	);

                                             ------------------------------------------------------------------------------------------

	type animal_mark is mod 72;

	type animal_constant_type is new entity_constant_type with
	record
		health_limit  : natural := 0;
		attack_range  : natural := 0;
		defense_range : natural := 0;
	end record;

	type animal_variable_type is new entity_variable_type with
	record
		health : natural := 0;
	end record;

	type animal_constant_list is array (animal_list) of animal_constant_type;
	type animal_variable_list is array (animal_mark) of animal_variable_type;

                                             ------------------------------------------------------------------------------------------

	animal_constant_data : constant animal_constant_list := (
		(ENTITY_ANIMAL, "Pig                 ", 'a', COLOUR_GREEN, EFFECT_NORMAL, 11, 11, 11),
		(ENTITY_ANIMAL, "Cow                 ", 'a', COLOUR_GREEN, EFFECT_NORMAL, 11, 11, 11),
		(ENTITY_ANIMAL, "Chicken             ", 'a', COLOUR_GREEN, EFFECT_NORMAL, 11, 11, 11),
		(ENTITY_ANIMAL, "Sheep               ", 'a', COLOUR_GREEN, EFFECT_NORMAL, 11, 11, 11),
		(ENTITY_ANIMAL, "Boar                ", 'a', COLOUR_GREEN, EFFECT_NORMAL, 11, 11, 11),
		(ENTITY_ANIMAL, "Goat                ", 'a', COLOUR_GREEN, EFFECT_NORMAL, 11, 11, 11),
		(ENTITY_ANIMAL, "Auroch              ", 'a', COLOUR_GREEN, EFFECT_NORMAL, 11, 11, 11),
		(ENTITY_ANIMAL, "Duck                ", 'a', COLOUR_GREEN, EFFECT_NORMAL, 11, 11, 11),
		(ENTITY_ANIMAL, "Dog                 ", 'a', COLOUR_GREEN, EFFECT_NORMAL, 11, 11, 11),
		(ENTITY_ANIMAL, "Cat                 ", 'a', COLOUR_GREEN, EFFECT_NORMAL, 11, 11, 11),
		(ENTITY_ANIMAL, "Rabbit              ", 'a', COLOUR_GREEN, EFFECT_NORMAL, 11, 11, 11),
		(ENTITY_ANIMAL, "Hamster             ", 'a', COLOUR_GREEN, EFFECT_NORMAL, 11, 11, 11),
		(ENTITY_ANIMAL, "Horse               ", 'a', COLOUR_GREEN, EFFECT_NORMAL, 11, 11, 11),
		(ENTITY_ANIMAL, "Donkey              ", 'a', COLOUR_GREEN, EFFECT_NORMAL, 11, 11, 11),
		(ENTITY_ANIMAL, "Camel               ", 'a', COLOUR_GREEN, EFFECT_NORMAL, 11, 11, 11),
		(ENTITY_ANIMAL, "Elephant            ", 'a', COLOUR_GREEN, EFFECT_NORMAL, 11, 11, 11),
		(ENTITY_ANIMAL, "Owl                 ", 'a', COLOUR_GREEN, EFFECT_NORMAL, 11, 11, 11),
		(ENTITY_ANIMAL, "Hawk                ", 'a', COLOUR_GREEN, EFFECT_NORMAL, 11, 11, 11),
		(ENTITY_ANIMAL, "Pigeon              ", 'a', COLOUR_GREEN, EFFECT_NORMAL, 11, 11, 11),
		(ENTITY_ANIMAL, "Vulture             ", 'a', COLOUR_GREEN, EFFECT_NORMAL, 11, 11, 11),
		(ENTITY_ANIMAL, "Crow                ", 'a', COLOUR_GREEN, EFFECT_NORMAL, 11, 11, 11),
		(ENTITY_ANIMAL, "Pheasant            ", 'a', COLOUR_GREEN, EFFECT_NORMAL, 11, 11, 11),
		(ENTITY_ANIMAL, "Sparrow             ", 'a', COLOUR_GREEN, EFFECT_NORMAL, 11, 11, 11),
		(ENTITY_ANIMAL, "Albatross           ", 'a', COLOUR_GREEN, EFFECT_NORMAL, 11, 11, 11),
		(ENTITY_ANIMAL, "Sardine             ", 'a', COLOUR_GREEN, EFFECT_NORMAL, 11, 11, 11),
		(ENTITY_ANIMAL, "Herring             ", 'a', COLOUR_GREEN, EFFECT_NORMAL, 11, 11, 11),
		(ENTITY_ANIMAL, "Catfish             ", 'a', COLOUR_GREEN, EFFECT_NORMAL, 11, 11, 11),
		(ENTITY_ANIMAL, "Carp                ", 'a', COLOUR_GREEN, EFFECT_NORMAL, 11, 11, 11),
		(ENTITY_ANIMAL, "Whale               ", 'a', COLOUR_GREEN, EFFECT_NORMAL, 11, 11, 11),
		(ENTITY_ANIMAL, "Shark               ", 'a', COLOUR_GREEN, EFFECT_NORMAL, 11, 11, 11),
		(ENTITY_ANIMAL, "Squid               ", 'a', COLOUR_GREEN, EFFECT_NORMAL, 11, 11, 11),
		(ENTITY_ANIMAL, "Sawfish             ", 'a', COLOUR_GREEN, EFFECT_NORMAL, 11, 11, 11),
		(ENTITY_ANIMAL, "Worm                ", 'a', COLOUR_GREEN, EFFECT_NORMAL, 11, 11, 11),
		(ENTITY_ANIMAL, "Bee                 ", 'a', COLOUR_GREEN, EFFECT_NORMAL, 11, 11, 11),
		(ENTITY_ANIMAL, "Centipede           ", 'a', COLOUR_GREEN, EFFECT_NORMAL, 11, 11, 11),
		(ENTITY_ANIMAL, "Spider              ", 'a', COLOUR_GREEN, EFFECT_NORMAL, 11, 11, 11),
		(ENTITY_ANIMAL, "Frog                ", 'a', COLOUR_GREEN, EFFECT_NORMAL, 11, 11, 11),
		(ENTITY_ANIMAL, "Rat                 ", 'a', COLOUR_GREEN, EFFECT_NORMAL, 11, 11, 11),
		(ENTITY_ANIMAL, "Bat                 ", 'a', COLOUR_GREEN, EFFECT_NORMAL, 11, 11, 11),
		(ENTITY_ANIMAL, "Mole                ", 'a', COLOUR_GREEN, EFFECT_NORMAL, 11, 11, 11),
		(ENTITY_ANIMAL, "Wolf                ", 'a', COLOUR_GREEN, EFFECT_NORMAL, 11, 11, 11),
		(ENTITY_ANIMAL, "Fox                 ", 'a', COLOUR_GREEN, EFFECT_NORMAL, 11, 11, 11),
		(ENTITY_ANIMAL, "Bear                ", 'a', COLOUR_GREEN, EFFECT_NORMAL, 11, 11, 11),
		(ENTITY_ANIMAL, "Mammoth             ", 'a', COLOUR_GREEN, EFFECT_NORMAL, 11, 11, 11),
		(ENTITY_ANIMAL, "Elk                 ", 'a', COLOUR_GREEN, EFFECT_NORMAL, 11, 11, 11),
		(ENTITY_ANIMAL, "Moose               ", 'a', COLOUR_GREEN, EFFECT_NORMAL, 11, 11, 11),
		(ENTITY_ANIMAL, "Deer                ", 'a', COLOUR_GREEN, EFFECT_NORMAL, 11, 11, 11),
		(ENTITY_ANIMAL, "Peebles             ", 'a', COLOUR_GREEN, EFFECT_NORMAL, 11, 11, 11),
		(ENTITY_ANIMAL, "Lion                ", 'a', COLOUR_GREEN, EFFECT_NORMAL, 11, 11, 11),
		(ENTITY_ANIMAL, "Hyena               ", 'a', COLOUR_GREEN, EFFECT_NORMAL, 11, 11, 11),
		(ENTITY_ANIMAL, "Bison               ", 'a', COLOUR_GREEN, EFFECT_NORMAL, 11, 11, 11),
		(ENTITY_ANIMAL, "Zebra               ", 'a', COLOUR_GREEN, EFFECT_NORMAL, 11, 11, 11),
		(ENTITY_ANIMAL, "Giraffe             ", 'a', COLOUR_GREEN, EFFECT_NORMAL, 11, 11, 11),
		(ENTITY_ANIMAL, "Crocodile           ", 'a', COLOUR_GREEN, EFFECT_NORMAL, 11, 11, 11),
		(ENTITY_ANIMAL, "Monkey              ", 'a', COLOUR_GREEN, EFFECT_NORMAL, 11, 11, 11),
		(ENTITY_ANIMAL, "Gnu                 ", 'a', COLOUR_GREEN, EFFECT_NORMAL, 11, 11, 11),
		(ENTITY_ANIMAL, "Caribou             ", 'a', COLOUR_GREEN, EFFECT_NORMAL, 11, 11, 11),
		(ENTITY_ANIMAL, "Seal                ", 'a', COLOUR_GREEN, EFFECT_NORMAL, 11, 11, 11),
		(ENTITY_ANIMAL, "Morse               ", 'a', COLOUR_GREEN, EFFECT_NORMAL, 11, 11, 11),
		(ENTITY_ANIMAL, "Penguin             ", 'a', COLOUR_GREEN, EFFECT_NORMAL, 11, 11, 11),
		(ENTITY_ANIMAL, "Turtle              ", 'a', COLOUR_GREEN, EFFECT_NORMAL, 11, 11, 11),
		(ENTITY_ANIMAL, "Cayman              ", 'a', COLOUR_GREEN, EFFECT_NORMAL, 11, 11, 11),
		(ENTITY_ANIMAL, "Otter               ", 'a', COLOUR_GREEN, EFFECT_NORMAL, 11, 11, 11),
		(ENTITY_ANIMAL, "Snake               ", 'a', COLOUR_GREEN, EFFECT_NORMAL, 11, 11, 11),
		(ENTITY_ANIMAL, "Lizard              ", 'a', COLOUR_GREEN, EFFECT_NORMAL, 11, 11, 11),
		(ENTITY_ANIMAL, "Daeodon             ", 'a', COLOUR_GREEN, EFFECT_NORMAL, 11, 11, 11),
		(ENTITY_ANIMAL, "Slime               ", 'a', COLOUR_GREEN, EFFECT_NORMAL, 11, 11, 11),
		(ENTITY_ANIMAL, "Axolotl             ", 'a', COLOUR_GREEN, EFFECT_NORMAL, 11, 11, 11),
		(ENTITY_ANIMAL, "Hedgehog            ", 'a', COLOUR_GREEN, EFFECT_NORMAL, 11, 11, 11),
		(ENTITY_ANIMAL, "Caterpillar         ", 'a', COLOUR_GREEN, EFFECT_NORMAL, 11, 11, 11),
		(ENTITY_ANIMAL, "Crab                ", 'a', COLOUR_GREEN, EFFECT_NORMAL, 11, 11, 11),
		(ENTITY_ANIMAL, "Scorpion            ", 'a', COLOUR_GREEN, EFFECT_NORMAL, 11, 11, 11),
		(ENTITY_ANIMAL, "Giant Lizard        ", 'a', COLOUR_GREEN, EFFECT_NORMAL, 11, 11, 11),
		(ENTITY_ANIMAL, "Giant Centipede     ", 'a', COLOUR_GREEN, EFFECT_NORMAL, 11, 11, 11),
		(ENTITY_ANIMAL, "Giant Spider        ", 'a', COLOUR_GREEN, EFFECT_NORMAL, 11, 11, 11),
		(ENTITY_ANIMAL, "Giant Sloth         ", 'a', COLOUR_GREEN, EFFECT_NORMAL, 11, 11, 11),
		(ENTITY_ANIMAL, "Giant Owl           ", 'a', COLOUR_GREEN, EFFECT_NORMAL, 11, 11, 11),
		(ENTITY_ANIMAL, "Giant Scorpion      ", 'a', COLOUR_GREEN, EFFECT_NORMAL, 11, 11, 11),
		(ENTITY_ANIMAL, "Giant Axolotl       ", 'a', COLOUR_GREEN, EFFECT_NORMAL, 11, 11, 11),
		(ENTITY_ANIMAL, "Giant Worm          ", 'a', COLOUR_GREEN, EFFECT_NORMAL, 11, 11, 11)
	);

	animal_variable_data : animal_variable_list;

------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
-- Goblin
------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

	type goblin_list is (
		GOBLIN_SLAVE,       GOBLIN_WORKER,      GOBLIN_WARRIOR,     GOBLIN_BOAR_RIDER,  GOBLIN_SHAMAN,      GOBLIN_CHIEF,       GOBLIN_KING,        GOBLIN_OGRE
	);

                                             ------------------------------------------------------------------------------------------

	type goblin_constant_type is new entity_constant_type with
	record
		health_limit  : natural := 0;
		armour_limit  : natural := 0;
		mana_limit    : natural := 0;
		stamina_limit : natural := 0;
		attack_range  : natural := 0;
	end record;

	type goblin_variable_type is new entity_variable_type with
	record
		health  : natural := 0;
		armour  : natural := 0;
		mana    : natural := 0;
		stamina : natural := 0;
	end record;

------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
-- Player
------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

	type player_data is
	record
		x       : map_width  := 0;
		y       : map_height := 0;
		health  : natural    := 0;
		armour  : natural    := 0;
		mana    : natural    := 0;
		stamina : natural    := 0;
	end record;

                                             ------------------------------------------------------------------------------------------

	player : player_data;

                                             ------------------------------------------------------------------------------------------

	procedure render_player is
	begin
		render_character ('@', COLOUR_CYAN, EFFECT_BOLD, screen_height (player.y), screen_width (player.x));
	end render_player;

------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
-- Gameplay
------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

	procedure action_move_up    is begin player.y := player.y - 1; end action_move_up;
	procedure action_move_down  is begin player.y := player.y + 1; end action_move_down;
	procedure action_move_left  is begin player.x := player.x - 1; end action_move_left;
	procedure action_move_right is begin player.x := player.x + 1; end action_move_right;

------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
-- Main
------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

begin

                                             ------------------------------------------------------------------------------------------

	bind ('q', action_exit'access);
	bind ('w', action_move_up'access);
	bind ('s', action_move_down'access);
	bind ('a', action_move_left'access);
	bind ('d', action_move_right'access);

	render_screen_delete;
	render_screen_offset;
	render_cursor_hide;

	generate_map;

                                             ------------------------------------------------------------------------------------------

	loop
		exit when active = false;
		signal := CANCEL;
		render_map;
		render_player;
		render_screen;
		get_immediate (signal);
		action_list (character'pos (signal)).all;
	end loop;

                                             ------------------------------------------------------------------------------------------

	render_cursor_show;

	return 0;

end xabina;