Boolean Argument --trajcontrol Misinterpreted as True When Set to False

[MartaYang]

Description

At train_trajnet.py#L41, the --trajcontrol argument is defined with default=False and type=bool, but it always evaluates to True when passed via the CLI, even if explicitly set to False. This is due to the misuse of type=bool, which interprets any non-empty string (e.g., "False") as True.

Steps to Reproduce

1. Define --trajcontrol as:

   group.add_argument("--trajcontrol", default=False, type=bool, help="If True, finetune trajnet with TrajControl")

2. Run:

   python train_trajnet.py --trajcontrol False

3. Observe:

   ipdb> print(args.trajcontrol)
   True

Suggested Fix

1. Replace type=bool with:

   type=lambda x: x.lower() in ['true', '1']

2. Or use action='store_true':

   group.add_argument("--trajcontrol", action='store_true', help="If set, finetune trajnet with TrajControl")