add draw.[hc] and util.h

1 files changed, 110 insertions, 0 deletions

diff --git a/src/text/draw.c b/src/text/draw.c
new file mode 100644
index 0000000..e6584bb
--- /dev/null
+++ b/src/text/draw.c
@@ -0,0 +1,110 @@
+#include <stdbool.h> // bool
+#include <string.h> // atoi()
+#include <stdlib.h> // EXIT_{FAILURE,SUCCESS}
+#include <stdio.h>
+#include "../libsok/sok.h"
+#include "util.h"
+#include "draw.h"
+
+static char print_buf[(SOK_LEVEL_MAX_WIDTH + 1) * SOK_LEVEL_MAX_HEIGHT + 1];
+
+static bool
+draw_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
+draw_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
+draw_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
+draw_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
+draw_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
+DRAW_CBS = {
+  .on_size = draw_on_size,
+  .on_home = draw_on_home,
+  .on_wall = draw_on_wall,
+  .on_goal = draw_on_goal,
+  .on_box =  draw_on_box,
+};
+
+void
+draw(
+  const sok_ctx_t * const ctx,
+  const size_t level_num,
+  const level_t * const level
+) {
+  // fill print buffer
+  if (!sok_ctx_walk(ctx, &DRAW_CBS, NULL)) {
+    die("Couldn't print level");
+  }
+
+  // print title, level, and console
+  printf(
+    "%s: %s (#%zu)\n" // set name, level name, and level number
+    "%s\n"            // level
+    "%zu%s> ",        // console
+    level->pack, level->name, level_num,
+    print_buf,
+    ctx->num_moves, sok_ctx_is_done(ctx) ? " (won!)" : ""
+  );
+}