gamegrid, falling, Tetrominos, collision and deleting rows, GUI Menus and Score

tetrominos.py

@@ -54,4 +54,9 @@ class Tetrominos:
     def move(self, dx, dy):
         """Move the tetromino."""
         self.x += dx
-        self.y += dy
+        self.y += dy
+
+    def instant_drop(self, grid):
+        """Move the tetromino to the lowest possible position."""
+        while not grid.check_collision(self.shape, self.x, self.y + 1):
+            self.y += 1