82 lines
4.6 KiB
Ada
82 lines
4.6 KiB
Ada
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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
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-- 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
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-- 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
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-- 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
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-- write a new program in Ada, a tiny game. Work in progress, it's messy and ugly for now...
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package body core is
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------------------------------------------------------------------------------------------
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procedure bind (symbol : character := CANCEL;
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action : procedure_pointer := action_idle'access) is
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begin
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action_list (character'pos (symbol)) := action;
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end bind;
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procedure unbind (symbol : character := CANCEL) is
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begin
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action_list (character'pos (symbol)) := action_idle'access;
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end unbind;
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procedure action_idle is begin null; end action_idle;
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procedure action_exit is begin active := false; end action_exit;
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procedure action_move_up is begin player.y := player.y - 1; end action_move_up;
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procedure action_move_down is begin player.y := player.y + 1; end action_move_down;
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procedure action_move_left is begin player.x := player.x - 1; end action_move_left;
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procedure action_move_right is begin player.x := player.x + 1; end action_move_right;
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procedure render_screen_delete is begin put (ESCAPE & "[2J"); end render_screen_delete;
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procedure render_screen_offset is begin put (ESCAPE & "[H"); end render_screen_offset;
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procedure render_cursor_hide is begin put (ESCAPE & "[?25l"); end render_cursor_hide;
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procedure render_cursor_show is begin put (ESCAPE & "[?25h"); end render_cursor_show;
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procedure render_realignment is begin put (CARRIAGE_RETURN & LINE_FEED); end render_realignment;
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procedure render_character (symbol : character := ' ';
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colour : character := COLOUR_WHITE;
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effect : character := EFFECT_NORMAL;
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y : screen_height := 0;
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x : screen_width := 0) is
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begin
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screen_symbol (y, x) := symbol;
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screen_colour (y, x) := colour;
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screen_effect (y, x) := effect;
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end render_character;
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procedure render_screen is
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format : string (1 .. 12) := ESCAPE & "[E;3CmS" & ESCAPE & "[0m";
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begin
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render_screen_offset;
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for y in screen_height
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loop
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for x in screen_width
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loop
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format (8) := screen_symbol (y, x);
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format (6) := screen_colour (y, x);
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format (3) := screen_effect (y, x);
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put (format);
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end loop;
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render_realignment;
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end loop;
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end render_screen;
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------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
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-- Player
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------------------------------------------------------------------------------------------
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procedure render_player is
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begin
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render_character ('@', COLOUR_CYAN, EFFECT_BOLD, screen_height (player.y), screen_width (player.x));
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end render_player;
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end core;
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