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#include <stdbool.h> // bool
#include <stdlib.h> // EXIT_{FAILURE,SUCCESS}
#include <string.h> // strerror
#include <errno.h> // errno
#include <SDL.h>
#include "../text/levels.h"
#include "../libsok/sok.h"
#include "util.h"
#include "action.h"
#include "warp-buf.h"
#include "sprites.h"
#include "draw.h"
#include "log-renderer-info.h"
static void
log_moves(
const sok_ctx_t * const ctx,
const size_t skip_moves
) {
char buf[1024] = { 0 };
size_t ofs = 0;
for (size_t i = skip_moves; i < ctx->num_moves; i++) {
if (ctx->moves[i].dir >= SOK_DIR_LAST) {
die("invalid move: %u", ctx->moves[i].dir);
}
buf[ofs++] = SOK_DIR_TO_CHAR(ctx->moves[i].dir);
}
SDL_Log("Solution (%zu moves): %s", ctx->num_moves - skip_moves, buf);
}
static void
solve_on_error(
const char * const err
) {
die("Error solving level: %s", err);
}
static void
set_level(
SDL_Window * const win,
draw_ctx_t * const draw_ctx,
sok_ctx_t * const ctx,
const size_t level_num
) {
// get level data
draw_ctx->level = levels_get_level(level_num);
// load level
if (!sok_ctx_set_level(ctx, draw_ctx->level->data)) {
die("Couldn't load level %zu", level_num);
}
// log level title
SDL_Log(
"Loaded level \"%s: %s\" (#%zu)",
draw_ctx->level->pack,
draw_ctx->level->name,
level_num
);
}
int main(int argc, char *argv[]) {
size_t level_num = (argc > 1) ? atoi(argv[1]) : 0,
zoom = 0;
const char *sprites_png_path = "../assets/sprites.png";
const char *font_path = "../assets/roboto.ttf";
// init warp buffer
warp_buf_t warp_buf;
warp_buf_clear(&warp_buf);
// init sok context
sok_ctx_t ctx;
sok_ctx_init(&ctx, NULL);
// init sdl
if (SDL_Init(SDL_INIT_VIDEO | SDL_INIT_AUDIO)) {
die("SDL_Init(): %s", SDL_GetError());
}
// register SDL exit handler
if (atexit(SDL_Quit)) {
die("atexit(SDL_Init): %s", strerror(errno));
exit(EXIT_FAILURE);
}
// init TTF
if (TTF_Init()) {
die("TTF_Init(): %s", TTF_GetError());
}
// register TTF exit handler
if (atexit(TTF_Quit)) {
die("atexit(TTF_Quit): %s", strerror(errno));
exit(EXIT_FAILURE);
}
// create window
SDL_Window *win = SDL_CreateWindow(
"Sokoban",
SDL_WINDOWPOS_UNDEFINED,
SDL_WINDOWPOS_UNDEFINED,
800,
600,
SDL_WINDOW_RESIZABLE
);
// check for error
if (!win) {
die("SDL_CreateWindow(): %s", SDL_GetError());
}
// create renderer
SDL_Renderer *renderer = SDL_CreateRenderer(win, -1, SDL_RENDERER_ACCELERATED | SDL_RENDERER_PRESENTVSYNC);
if (!renderer) {
die("SDL_CreateRenderer(): %s", SDL_GetError());
}
// set window title
SDL_SetWindowTitle(win, "Sokoban");
log_renderer_info(renderer);
// init draw context
draw_ctx_t draw_ctx = {
.level_num = &level_num,
.ctx = &ctx,
.renderer = renderer,
.zoom = &zoom,
};
// set level
set_level(win, &draw_ctx, &ctx, level_num);
// init sprites
sprites_init(renderer, sprites_png_path, draw_ctx.sprites);
// load font
draw_ctx.font = TTF_OpenFontIndex(font_path, 16, 0);
if (!draw_ctx.font) {
die("TTF_OpenFontIndex(): %s", TTF_GetError());
}
bool done = false;
SDL_Event ev;
while (!done) {
// read events
while (SDL_PollEvent(&ev)) {
// get action
const action_t action = get_action(&ev);
// handle action
switch (action.type) {
case ACTION_NONE:
// do nothing
break;
case ACTION_QUIT:
done = true;
break;
case ACTION_MOVE:
if (!sok_ctx_move(&ctx, (sok_dir_t) action.data)) {
warn("move %s failed", SOK_DIR_TO_STR((sok_dir_t) action.data));
}
break;
case ACTION_UNDO:
if (!sok_ctx_undo(&ctx)) {
warn("undo failed");
}
break;
case ACTION_NEXT:
if (sok_ctx_is_done(&ctx)) {
// advance level
level_num++;
// set level
set_level(win, &draw_ctx, &ctx, level_num);
} else {
warn("cannot advance to next level");
}
break;
case ACTION_RESET:
// reset level
if (!sok_ctx_set_level(&ctx, draw_ctx.level->data)) {
die("Couldn't load level %zu", level_num);
}
break;
case ACTION_WARP:
if (warp_buf_get(&warp_buf, &level_num)) {
// load level
set_level(win, &draw_ctx, &ctx, level_num);
// clear warp buf
warp_buf_clear(&warp_buf);
}
break;
case ACTION_WARP_BUF_PUSH:
warp_buf_push_num(&warp_buf, action.data);
break;
case ACTION_WARP_BUF_POP:
warp_buf_pop_num(&warp_buf);
break;
case ACTION_SOLVE:
{
// get current number of moves
const size_t old_num_moves = ctx.num_moves;
if (sok_solve(&ctx, solve_on_error)) {
// found solution, print it
log_moves(&ctx, old_num_moves);
} else {
warn("Couldn't solve level");
}
}
break;
case ACTION_ZOOM_IN:
if (zoom < 30) {
zoom++;
}
break;
case ACTION_ZOOM_OUT:
if (zoom > 0) {
zoom--;
}
break;
default:
// ignore
break;
}
}
// draw
draw(&draw_ctx);
}
// fini renderer, window
SDL_DestroyRenderer(renderer);
SDL_DestroyWindow(win);
// return success
return EXIT_SUCCESS;
}
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