xero/xero.c

/*
Copyright (c) 2023 : Ognjen 'xolatile' Milan Robovic

Xero is free software! You will redistribute it or modify it under the terms of the GNU General Public License by Free Software Foundation.
And when you do redistribute it or modify it, it will use either version 3 of the License, or (at yours truly opinion) any later version.
It is distributed in the hope that it will be useful or harmful, it really depends... But no warranty what so ever, seriously. See GNU/GPLv3.
*/

#include <xolatile/xtandard.c>
#include <xolatile/xurses.c>

enum {
	ENTITY_TYPE_NONE,
	ENTITY_TYPE_FOOD,
	ENTITY_TYPE_COUNT
};

enum {
	ENTITY_NULL,
	ENTITY_APPLE,
	ENTITY_LEMON,
	ENTITY_WATERMELON,
	ENTITY_PLAYER,
	ENTITY_COUNT
};

static int   map_width  = 0;
static int   map_height = 0;
static int * map        = NULL;

static int player_x = 0;
static int player_y = 0;

static struct {
	int    type;
	char   symbol;
	char   symbol_alternative [3];
	int    effect;
	int    colour;
	char * name;
	int    value;
	int    logic;
} const entity_data [ENTITY_COUNT] = {
	{ ENTITY_TYPE_NONE, '.', "  ", EFFECT_NORMAL, COLOUR_WHITE,  "-",          0, 0 },
	{ ENTITY_TYPE_FOOD, 'o', "  ", EFFECT_BOLD,   COLOUR_RED,    "Apple",      2, 0 },
	{ ENTITY_TYPE_FOOD, 'o', "  ", EFFECT_BOLD,   COLOUR_YELLOW, "Lemon",      3, 0 },
	{ ENTITY_TYPE_FOOD, 'O', "  ", EFFECT_BOLD,   COLOUR_GREEN,  "Watermelon", 5, 0 },
	{ ENTITY_TYPE_NONE, '@', "  ", EFFECT_BOLD,   COLOUR_BLUE,   "I",          0, 1 }
};

static void player_move_up    (void) { --player_y; limit (& player_y, 0, map_height - 1); }
static void player_move_down  (void) { ++player_y; limit (& player_y, 0, map_height - 1); }
static void player_move_left  (void) { --player_x; limit (& player_x, 0, map_width  - 1); }
static void player_move_right (void) { ++player_x; limit (& player_x, 0, map_width  - 1); }

static void map_render (void) {
	int i = 0;
	int j = 0;

	map [player_y * map_width + player_x] = ENTITY_PLAYER;

	for (i = 0; i != map_height; ++i) {
		for (j = 0; j != map_width; ++j) {
			int index = map [i * map_width + j];

			char symbol = entity_data [index]. symbol;
			int  effect = entity_data [index]. effect;
			int  colour = entity_data [index]. colour;

			curses_render_character (symbol, colour, effect, j, i);
		}
	}
}

int main (void) {
	terminal_show_cursor (0);

	curses_initialize ();

	map_width  = curses_screen_width;
	map_height = curses_screen_height;

	map = allocate (map_width * map_height * (int) sizeof (* map));

	curses_bind ('Q', curses_exit);
	curses_bind ('w', player_move_up);
	curses_bind ('s', player_move_down);
	curses_bind ('a', player_move_left);
	curses_bind ('d', player_move_right);

	while (curses_active != 0) {
		map_render ();

		curses_synchronize ();
	}

	curses_deinitialize ();

	map = deallocate (map);

	terminal_show_cursor (1);

	echo ("Good byte hero! (:\n");

	return (EXIT_SUCCESS);
}