Fixed a bug

src/main.rs

@@ -123,20 +123,20 @@ impl EventHandler for Apr {
             self.set_colour(r, c, (self.board[r][c] + 1) % 8)?;
             self.__TEST_state += 1;
         }
-
+        
+        let posn = mouse::position(ctx);
         if self.__test_pawn_held {
             if !mouse::button_pressed(ctx, MouseButton::Left) { // no long clicking and dragging
-                let (x, y) = self.closest_square_coords(self.__test_pawn_x, self.__test_pawn_y);
+                let (x, y) = self.closest_square_coords(posn.x, posn.y);
                 self.__test_pawn_x = x;
                 self.__test_pawn_y = y;
+                self.__test_pawn_held = false;
             } else {
-                let posn = mouse::position(ctx);
                 self.__test_pawn_x = posn.x + self.__test_pawn_h_x;
                 self.__test_pawn_y = posn.y + self.__test_pawn_h_y;
             }
         } else {
             if mouse::button_pressed(ctx, MouseButton::Left) {
-                let posn = mouse::position(ctx);
                 let posx = posn.x;
                 let posy = posn.y;
                 if posx >= self.__test_pawn_x && posx <= self.__test_pawn_x + 20.0 && posy >= self.__test_pawn_y && posy <= self.__test_pawn_y + 20.0 { //In real game don't hardcode size