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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;

with core;

package body screen is

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	procedure delete      is begin ada.text_io.put (core.ESCAPE & "[2J");                   end delete;
	procedure offset      is begin ada.text_io.put (core.ESCAPE & "[H");                    end offset;
	procedure hide_cursor is begin ada.text_io.put (core.ESCAPE & "[?25l");                 end hide_cursor;
	procedure show_cursor is begin ada.text_io.put (core.ESCAPE & "[?25h");                 end show_cursor;
	procedure new_line    is begin ada.text_io.put (core.CARRIAGE_RETURN & core.LINE_FEED); end new_line;

	procedure render_character (symbol : character := ' ';
	                            colour : character := core.colour.white;
	                            effect : character := core.effect.normal;
	                            y        : height    := 0;
	                            x        : width     := 0) is
	begin
		symbol_matrix (y, x) := symbol;
		colour_matrix (y, x) := colour;
		effect_matrix (y, x) := effect;
	end render_character;

	procedure render_buffer is
		format : string (1 .. 12) := core.ESCAPE & "[E;3CmS" & core.ESCAPE & "[0m";
	begin
		offset;
		for y in height
		loop
			for x in width
			loop
				format (8) := symbol_matrix (y, x);
				format (6) := colour_matrix (y, x);
				format (3) := effect_matrix (y, x);
				ada.text_io.put (format);
			end loop;
			new_line;
		end loop;
	end render_buffer;

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end screen;