General flyweight system partial implementation...

xabina.adb

@@ -1,6 +1,14 @@
+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
+-- Copyright (c) 2023 - Ognjen 'xolatile' Milan Robovic
+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
+-- This program 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 2 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.
+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
 -- 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
+-- 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
--- a new program in Ada, a tiny game. Work in progress, it's messy and ugly for now...
+-- write a new program in Ada, a tiny game. Work in progress, it's messy and ugly for now...
+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
 
 with ada.text_io, ada.strings.unbounded;
 use  ada.text_io, ada.strings.unbounded;
@@ -10,52 +18,125 @@ use  ada.text_io, ada.strings.unbounded;
 
 function xabina return integer is
 
-	type entity_id is (ENTITY_NONE,        ENTITY_MENU,        ENTITY_TILE,        ENTITY_ITEM,        ENTITY_PLANT,       ENTITY_ANIMAL,      ENTITY_GOBLIN,      ENTITY_PLAYER);
+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
-	type tile_id   is (TILE_NONE,          TILE_VOID,          TILE_WALL,          TILE_FLOOR,         TILE_HOLE,          TILE_STAIRS_DOWN,   TILE_STAIRS_UP,     TILE_DOOR);
+-- System
-	type item_id   is (ITEM_NONE,          ITEM_AMMUNITION,    ITEM_WEAPON,        ITEM_ARMOUR,        ITEM_SCROLL,        ITEM_POTION,        ITEM_CONSUMABLE,    ITEM_NOTE);
+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
-	type plant_id  is (PLANT_NONE,         PLANT_GRASS,        PLANT_REED,         PLANT_BUSH,         PLANT_APPLE_TREE,   PLANT_LEMON_TREE,   PLANT_OAK_TREE,     PLANT_PINE_TREE);
-	type animal_id is (ANIMAL_NONE,        ANIMAL_RAT,         ANIMAL_BAT,         ANIMAL_SPIDER,      ANIMAL_LIZARD,      ANIMAL_SNAIL,       ANIMAL_WORM,        ANIMAL_MOLE);
-	type goblin_id is (GOBLIN_NONE,        GOBLIN_WORKER,      GOBLIN_WARRIOR,     GOBLIN_BOAR_RIDER,  GOBLIN_SHAMAN,      GOBLIN_CHIEF,       GOBLIN_KING,        GOBLIN_OGRE);
 
-	type tile_list_id is (STONE_WALL, WOODEN_WALL, STONE_FLOOR, WOODEN_FLOOR);
+	type subrange is
-
-	type entity (this : entity_id) is
 	record
-		id      : entity_id        := ENTITY_NONE;
+		minimum : natural := 0;
-		name    : unbounded_string := null_unbounded_string;
+		average : natural := 0;
-		code    : character        := ' ';
+		maximum : natural := 0;
-		collide : boolean          := false;
-		case this is
-			when ENTITY_TILE =>
-				tile : tile_id := TILE_NONE;
-			when ENTITY_ITEM =>
-				item   : item_id := ITEM_NONE;
-				weight : natural := 0;
-				value  : natural := 0;
-			when ENTITY_PLANT =>
-				plant         : plant_id := PLANT_NONE;
-				generate_item : item_id  := ITEM_NONE;
-				generate_rate : natural  := 0;
-			when others =>
-				null;
-				--~ TODO: Other entity types...
-		end case;
 	end record;
 
-	type tile_list is array (tile_list_id) of entity (ENTITY_TILE);
+	type colour_id is (
-
+		COLOUR_GREY,        COLOUR_RED,         COLOUR_GREEN,       COLOUR_YELLOW,      COLOUR_BLUE,        COLOUR_PINK,        COLOUR_CYAN,        COLOUR_WHITE
-	data_tile : constant tile_list := (
-		(this => ENTITY_TILE, id => ENTITY_TILE, name => to_unbounded_string ("Stone Wall"),   code => '$', tile => TILE_WALL,  collide => true),
-		(this => ENTITY_TILE, id => ENTITY_TILE, name => to_unbounded_string ("Wooden Wall"),  code => '#', tile => TILE_WALL,  collide => true),
-		(this => ENTITY_TILE, id => ENTITY_TILE, name => to_unbounded_string ("Stone Floor"),  code => '.', tile => TILE_FLOOR, collide => false),
-		(this => ENTITY_TILE, id => ENTITY_TILE, name => to_unbounded_string ("Wooden Floor"), code => '=', tile => TILE_FLOOR, collide => false)
 	);
 
+	type effect_id is (
+		EFFECT_NORMAL,      EFFECT_BOLD,        EFFECT_ITALIC,      EFFECT_UNDERLINE,   EFFECT_BLINK,       EFFECT_REVERSE
+	);
+
+	type entity_id is (
+		ENTITY_NONE,        ENTITY_MENU,        ENTITY_MAP,         ENTITY_ITEM,        ENTITY_PLANT,       ENTITY_ANIMAL,      ENTITY_GOBLIN,      ENTITY_PLAYER
+	);
+
+	type map_id is (
+		MAP_NONE,           MAP_VOID,           MAP_WALL,           MAP_FLOOR,          MAP_HOLE,           MAP_STAIRS_DOWN,    MAP_STAIRS_UP,      MAP_DOOR
+	);
+
+	type item_id is (
+		ITEM_NONE,          ITEM_AMMUNITION,    ITEM_WEAPON,        ITEM_ARMOUR,        ITEM_SCROLL,        ITEM_POTION,        ITEM_CONSUMABLE,    ITEM_NOTE
+	);
+
+	type plant_id is (
+		PLANT_NONE,         PLANT_GRASS,        PLANT_REED,         PLANT_BUSH,         PLANT_APPLE_TREE,   PLANT_LEMON_TREE,   PLANT_OAK_TREE,     PLANT_PINE_TREE
+	);
+
+	type animal_id is (
+		ANIMAL_NONE,        ANIMAL_RAT,         ANIMAL_BAT,         ANIMAL_SPIDER,      ANIMAL_LIZARD,      ANIMAL_SNAIL,       ANIMAL_WORM,        ANIMAL_MOLE
+	);
+
+	type goblin_id is (
+		GOBLIN_NONE,        GOBLIN_WORKER,      GOBLIN_WARRIOR,     GOBLIN_BOAR_RIDER,  GOBLIN_SHAMAN,      GOBLIN_CHIEF,       GOBLIN_KING,        GOBLIN_OGRE
+	);
+
+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
+-- Entity
+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
+
+	type entity_constant_type is tagged
+	record
+		entity  : entity_id        := ENTITY_NONE;           -- Entity identifier.
+		name    : unbounded_string := null_unbounded_string; -- Entity general name.
+		code    : character        := ' ';                   -- Entity ASCII character representation.
+		colour  : colour_id        := COLOUR_WHITE;          -- Entity VT100 escape sequence colour.
+		effect  : effect_id        := EFFECT_NORMAL;         -- Entity VT100 escape sequence effect.
+		collide : boolean          := false;                 -- Entity collision information.
+	end record;
+
+	type entity_variable_type is tagged
+	record
+		x : integer := 0; -- Global X coordinate.
+		y : integer := 0; -- Global Y coordinate.
+	end record;
+
+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
+-- Map:
+-- -- Map data is only constant, not variable, since X and Y coordinates are determined by player, camera or global position.
+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
+
+	type map_list_id is (
+		STONE_WALL,         WOODEN_WALL,        STONE_FLOOR,        WOODEN_FLOOR
+	);
+
+	type map_constant_type is new entity_constant_type with
+	record
+		map     : map_id  := MAP_NONE;
+		trigger : natural := 0;
+	end record;
+
+	type map_list is array (map_list_id) of map_constant_type;
+
+	map_data : constant map_list := (
+		(ENTITY_MAP, to_unbounded_string ("Stone Wall"),   '#', COLOUR_GREY,   EFFECT_BOLD,   true,  MAP_WALL,  0),
+		(ENTITY_MAP, to_unbounded_string ("Wooden Wall"),  '#', COLOUR_YELLOW, EFFECT_NORMAL, true,  MAP_WALL,  0),
+		(ENTITY_MAP, to_unbounded_string ("Stone Floor"),  '.', COLOUR_GREY,   EFFECT_BOLD,   false, MAP_FLOOR, 0),
+		(ENTITY_MAP, to_unbounded_string ("Wooden Floor"), '.', COLOUR_YELLOW, EFFECT_NORMAL, false, MAP_FLOOR, 0)
+	);
+
+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
+-- Goblin
+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
+
+	type goblin_constant_type is new entity_constant_type with
+	record
+		attack_range  : subrange := (0, 0, 0);
+		health_limit  : natural  := 0;
+		armour_limit  : natural  := 0;
+		mana_limit    : natural  := 0;
+		stamina_limit : natural  := 0;
+	end record;
+
+	type goblin_variable_type is new entity_variable_type with
+	record
+		goblin  : goblin_id := GOBLIN_NONE; -- Index of 'goblin_data'.
+		health  : natural   := 0;
+		armour  : natural   := 0;
+		mana    : natural   := 0;
+		stamina : natural   := 0;
+		weapon  : item_id   := ITEM_NONE;
+	end record;
+
+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
+-- Gameplay
+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
+
 begin
 
-	for this in tile_list_id
+	for this in map_list_id
 	loop
-		put_line ("> " & to_string (data_tile (this).name));
+		put_line ("> " & to_string (map_data (this).name));
 	end loop;
 
 	return 0;