#pragma once
#include <SDL2/SDL.h>

// Convenience: also get many stdlibs, so that we do not need to care in the program
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <stdint.h>
#include <stdbool.h>

typedef unsigned char byte;

typedef struct color {
	byte r;
	byte g;
	byte b;
} color_t;

/* These are mutable, so that it is easy to change them from the code, before runing init() */
int TILE_SIZE = 5;
int GRID_HEIGHT = 20;
int GRID_WIDTH = 20;

color_t ** grid;

/* We wrap SDL as a whole, so this is our API. */
void init(void);
void redraw(void);
void wait(int msec); // Not a regular usleep, since we want SDL to still get inputs
char **getkeys(int count); // Get up to `count` keys pressed since last call. These are strings like 'a', 'shift', 'up', &c.
                           // We only report keydowns, and we report them in order they were pressed.
/* low-level Grid API */
void grid_set(int x, int y, color_t color);
color_t grid_get(int x, int y);
// Of course, this is fourth quadrant, i.e. the origin is top left corner.

/* I thought of providing a growing array here, but my implementation is too
 * ugly (e.g. too many void pointers).  Use reallocarray(3) instead, or just a
 * regular array big enough. */