1 files changed, 190 insertions, 0 deletions
diff --git a/src/text/main.c b/src/text/main.c
new file mode 100644
index 0000000..bcf53a1
--- /dev/null
+++ b/src/text/main.c
@@ -0,0 +1,190 @@
+#include <stdbool.h> // bool
+#include <string.h> // atoi()
+#include <stdlib.h> // EXIT_{FAILURE,SUCCESS}
+#include <stdio.h>
+#include "../libsok/sok.h"
+
+#define UNUSED(a) ((void) (a))
+
+static const char * const
+LEVELS[] = {
+  "5#|#@$.#|5#",
+  "7#|3#.3#|3#$3#|#.$@$.#|3#$3#|3#.3#|7#",
+};
+#define NUM_LEVELS (sizeof(LEVELS) / sizeof(char*))
+
+static char print_buf[(SOK_LEVEL_MAX_WIDTH + 1) * SOK_LEVEL_MAX_HEIGHT + 1];
+
+static bool
+on_size(
+  const sok_ctx_t * const ctx, 
+  const sok_pos_t size,
+  void * const data
+) {
+  UNUSED(ctx);
+  UNUSED(data);
+
+  // fprintf(stderr, "size: x = %u, y = %u\n", size.x, size.y);
+
+  memset(print_buf, ' ', sizeof(print_buf));
+  print_buf[(size.x + 1) * size.y + 1] = '\0';
+  for (size_t i = 0; i < size.y; i++) {
+    print_buf[(i + 1) * (size.x + 1) - 1] = '\n';
+  }
+
+  return true;
+}
+
+static bool
+on_home(
+  const sok_ctx_t * const ctx, 
+  const sok_pos_t pos,
+  const bool has_goal,
+  void * const data
+) {
+  UNUSED(data);
+  print_buf[pos.y * (ctx->level.size.x + 1) + pos.x] = has_goal ? '+' : '@';
+  return true;
+}
+
+static bool
+on_wall(
+  const sok_ctx_t * const ctx, 
+  const sok_pos_t pos,
+  void * const data
+) {
+  // fprintf(stderr, "wall: x = %u, y = %u\n", pos.x, pos.y);
+  UNUSED(data);
+  print_buf[pos.y * (ctx->level.size.x + 1) + pos.x] = '#';
+  return true;
+}
+
+static bool
+on_goal(
+  const sok_ctx_t * const ctx, 
+  const sok_pos_t pos,
+  const bool has_player,
+  const bool has_box,
+  void * const data
+) {
+  UNUSED(data);
+  const char c = has_player ? '+' : (has_box ? '*' : '.');
+  print_buf[pos.y * (ctx->level.size.x + 1) + pos.x] = c;
+  return true;
+}
+
+static bool
+on_box(
+  const sok_ctx_t * const ctx, 
+  const sok_pos_t pos,
+  const bool has_goal,
+  void * const data
+) {
+  UNUSED(data);
+  print_buf[pos.y * (ctx->level.size.x + 1) + pos.x] = has_goal ? '*' : '$';
+  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;
+}