HL2 Mod Teleportation Help? Thread

Hi, I'm an 18 year old college student. I'm making a HL2 mod for a college course. I have some experience with C++, but I need a push in the right direction.

My idea is to mod the Crossbow weapon so when the bolt hits a surface it teleports the player to where the bolt hits.

Is there anyway I can do this?

I don't just want someone to supply me with code, I just want a push in the right direction so I can learn it properly.

Any help would be great.