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#include <stdbool.h> // bool
#include <string.h> // atoi()
#include <stdlib.h> // EXIT_{FAILURE,SUCCESS}
#include <stdio.h>
#include "sok.h"
#define UNUSED(a) ((void) (a))
static const char * const
LEVELS[] = {
"#####|#@$.#|#####|",
"#######|###.###|###$###|#.$@$.#|###$###|###.###|#######",
};
#define NUM_LEVELS (sizeof(LEVELS) / sizeof(char*))
static char print_buf[(SOK_LEVEL_MAX_WIDTH + 1) * SOK_LEVEL_MAX_HEIGHT + 1];
static bool
on_size(
const sok_ctx_t * const ctx,
const sok_pos_t size,
void * const data
) {
UNUSED(ctx);
UNUSED(data);
// fprintf(stderr, "size: x = %u, y = %u\n", size.x, size.y);
memset(print_buf, ' ', sizeof(print_buf));
print_buf[(size.x + 1) * size.y + 1] = '\0';
for (size_t i = 0; i < size.y; i++) {
print_buf[(i + 1) * (size.x + 1) - 1] = '\n';
}
return true;
}
static bool
on_home(
const sok_ctx_t * const ctx,
const sok_pos_t pos,
const bool has_goal,
void * const data
) {
UNUSED(data);
print_buf[pos.y * (ctx->level.size.x + 1) + pos.x] = has_goal ? '+' : '@';
return true;
}
static bool
on_wall(
const sok_ctx_t * const ctx,
const sok_pos_t pos,
void * const data
) {
// fprintf(stderr, "wall: x = %u, y = %u\n", pos.x, pos.y);
UNUSED(data);
print_buf[pos.y * (ctx->level.size.x + 1) + pos.x] = '#';
return true;
}
static bool
on_goal(
const sok_ctx_t * const ctx,
const sok_pos_t pos,
const bool has_player,
const bool has_box,
void * const data
) {
UNUSED(data);
const char c = has_player ? '+' : (has_box ? '*' : '.');
print_buf[pos.y * (ctx->level.size.x + 1) + pos.x] = c;
return true;
}
static bool
on_box(
const sok_ctx_t * const ctx,
const sok_pos_t pos,
const bool has_goal,
void * const data
) {
UNUSED(data);
print_buf[pos.y * (ctx->level.size.x + 1) + pos.x] = has_goal ? '*' : '$';
return true;
}
static sok_ctx_walk_cbs_t PRINT_CBS = {
.on_size = on_size,
.on_home = on_home,
.on_wall = on_wall,
.on_goal = on_goal,
.on_box = on_box,
};
static void
print_level(
const sok_ctx_t * const ctx
) {
// fill buffer
if (!sok_ctx_walk(ctx, &PRINT_CBS, NULL)) {
fprintf(stderr, "Couldn't print level\n");
exit(EXIT_FAILURE);
}
// print level
printf("%s\n", print_buf);
}
int main(int argc, char *argv[]) {
size_t level = (argc > 1) ? atoi(argv[1]) : 0;
// init context
sok_ctx_t ctx;
sok_ctx_init(&ctx, NULL);
if (!sok_ctx_set_level(&ctx, LEVELS[level])) {
fprintf(stderr, "Couldn't load level %zu\n", level);
return EXIT_FAILURE;
}
char buf[1024];
bool done = false;
while (!done) {
print_level(&ctx);
printf("%zu%s> ", ctx.num_moves, sok_ctx_is_done(&ctx) ? " (won!)" : "");
if (!fgets(buf, sizeof(buf), stdin)) {
done = true;
break;
}
switch (buf[0]) {
case EOF:
case 'q':
done = true;
break;
case 'k':
if (!sok_ctx_move(&ctx, SOK_DIR_UP)) {
fprintf(stderr, "W: move up failed\n");
}
break;
case 'h':
if (!sok_ctx_move(&ctx, SOK_DIR_LEFT)) {
fprintf(stderr, "W: move left failed\n");
}
break;
case 'j':
if (!sok_ctx_move(&ctx, SOK_DIR_DOWN)) {
fprintf(stderr, "W: move down failed\n");
}
break;
case 'l':
if (!sok_ctx_move(&ctx, SOK_DIR_RIGHT)) {
fprintf(stderr, "W: move right failed\n");
}
break;
case 'u':
if (!sok_ctx_undo(&ctx)) {
fprintf(stderr, "W: undo failed\n");
}
break;
case 'n':
if (sok_ctx_is_done(&ctx)) {
// advance level
level = (level + 1) % NUM_LEVELS;
// load next level
if (!sok_ctx_set_level(&ctx, LEVELS[level])) {
fprintf(stderr, "Couldn't load level %zu\n", level);
return EXIT_FAILURE;
}
} else {
fprintf(stderr, "W: cannot advance to next level\n");
}
break;
default:
// ignore
break;
}
}
return 0;
}
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