Utils.java 文件源码

public static void setPlayerWalkSpeed(EntityPlayer player, float value)
{
    Class c = PlayerCapabilities.class;
    Field field = c.getDeclaredFields()[6];
    field.setAccessible(true);

    try 
    {
        field.setFloat(player.capabilities, value);
    }
    catch (Exception e) 
    {
        e.printStackTrace();
    }
}