Tetris: PieceStuck() learns of lower halves

src/tetris/newpiece.h

@@ -18,7 +18,7 @@ std::unique_ptr<ncpp::Plane> NewPiece() {
   const size_t cols = strlen(t->texture);
   int y, x;
   stdplane_->get_dim(&y, &x);
-  const int xoff = x / 2 - BOARD_WIDTH + (random() % BOARD_WIDTH - 1);
+  const int xoff = x / 2 - BOARD_WIDTH + random() % BOARD_WIDTH;
   std::unique_ptr<ncpp::Plane> n = std::make_unique<ncpp::Plane>(2, cols, board_top_y_ - 1, xoff, nullptr);
   if(n){
     uint64_t channels = 0;

src/tetris/stuck.h

@@ -12,8 +12,12 @@ bool PieceStuck() {
       if(board_->get_at(cmpy, cmpx, &c) < 0){
         throw TetrisNotcursesErr("get_at()");
       }
-      if(c.get().gcluster && c.get().gcluster != ' '){
-        return true;
+      if(c.get().gcluster){
+        if(c.get().gcluster != ' '){
+          if(strcmp(board_->get_extended_gcluster(c), "▄")){
+            return true;
+          }
+        }
       }
     }
   }