Handle when trying to shrink the map too much

1 files changed, 12 insertions, 3 deletions

diff --git a/main.c b/main.c
index 25b1142..18b8d96 100644
--- a/main.c
+++ b/main.c
@@ -153,12 +153,15 @@ int main(int argc, char **argv) {
             case 'l': map_offset_x -= 2; break;
             case 'j': map_offset_y -= 1; break;
             case 'k': map_offset_y += 1; break;
+
             case 'H': clear(); map_offset_x += 20; break;
             case 'L': clear(); map_offset_x -= 20; break;
             case 'J': clear(); map_offset_y -= 10; break;
             case 'K': clear(); map_offset_y += 10; break;
+
             case 'z': clear(); map_offset_x = 2; map_offset_y = 1; break; /* Move to top left corner */
             case 'x': clear(); map_offset_x = - width * 2 + COLS - 2; map_offset_y = - height + LINES - 2; break; /* Move to bottom right corner */
+
             case 'g':
                       switch (getch()) {
                           case 's':
@@ -173,18 +176,19 @@ int main(int argc, char **argv) {
                               break;
                       }
                       break;
+
             case 'a': anim = !anim; break;
+
             case 'y':
             case 'o':
             case 'u':
             case 'i':
                       if(is_maze) {
                           switch (c) {
-                              /* TODO: handle if it's zero */
-                              case 'y': mwidth -= 1; break;
+                              case 'y': if (mwidth > 1) mwidth -= 1; break;
                               case 'o': mwidth += 1; break;
                               case 'u': mheight += 1; break;
-                              case 'i': mheight -= 1; break;
+                              case 'i': if (mheight > 1) mheight -= 1; break;
                           }
                           map_free(map, height);
                           visited_free(visited, height);
@@ -200,6 +204,7 @@ int main(int argc, char **argv) {
                           path = path_func(dirs, map, width, height, start_pos, end_pos, visited, anim);
                       }
                       break;
+
             case 's':
                       message(height, "Filename: ");
                       /* TODO: figure out how to show the cursor and echo the characters */
@@ -213,6 +218,7 @@ int main(int argc, char **argv) {
                       message(height, "Saved to %s", filename);
                       getch();
                       break;
+
             case 'n':
                       if (is_maze) {
                           map_free(map, height);
@@ -221,6 +227,7 @@ int main(int argc, char **argv) {
                           path = path_func(dirs, map, width, height, start_pos, end_pos, visited, anim);
                       }
                 break;
+
             case 'e':
                       is_maze = 0;
                       visited_free(visited, height);
@@ -232,7 +239,9 @@ int main(int argc, char **argv) {
                       visited = visited_new(width, height);
                       path = path_func(dirs, map, width, height, start_pos, end_pos, visited, anim);
                       break;
+
             case KEY_RESIZE: clear(); break;
+
             case 'q': map_free(map, height); path_free(path, height); endwin(); return 0;
         }
     }