mp_grid_clear_rectangle(id, x1, y1, x2, y2);
| 参数 | 描述 |
|---|---|
| id | Index of the mp_grid that is to be used |
| x1 | The x coordinate of the left side of the rectangle to check. |
| y1 | The y coordinate of the top side of the rectangle to check. |
| x2 | The x coordinate of the right side of the rectangle to check. |
| y2 | The x coordinate of the bottom side of the rectangle to check. |
返回: Boolean（布尔值）
With this function you can define an area in room
coordinates which will then clear the corresponding cells in
the specified mp_grid. Even if a cell partially falls within the
defined rectangular region it will be cleared.
mp_grid_clear_rectangle(grid, 0, 0, 100,
200);
The above code will mark as free all cells of the mp_grid indexed in the variable "grid" that fall within the area 0,0 to 100,200.