Guards and their different states

What will the guards be doing?
The guards will be idling, patrolling, investigating, searching, chasing and shooting.

Shooting they will be doing if the player are in their line-of-sight for too long.
They are chasing when they have seen the player but he/she is no longer in their line-of-sight.
They are searching if they know that the player is around, but not where.
They are investigating if they hear a sound but do not know about the player.
Patrolling and idling will be their standard behavior when they are not aware of the player.

Each guard will have his/her own GuardStateManager. It will function just as the StateManager that handles the game-states. The only difference is that it holds GuardState-pointers instead of State-pointers.

• Patrol: A guard on patrol will walk from waypoint to waypoint until he/she detects the player, either by sound, sight or alarm. Each time it comes to a waypoint he/she will stand there for a while, looking around.
• Idle: An idle guard stands his ground until a player’s action changes his/her behavior.
• Chase: If the guard has just seen the player but he/she has moved out of the line-of-sight the guard will move to the last known position as if it was a waypoint there. If there is no more sign of the player when he/she reaches the waypoint the guard will enter its Search-mode.
• Search: A waypoint will be set somewhere close to the guards, which he/she then move toward, behaving as in Patrol-mode but with no fixed waypoints to loop through.
• Investigate: If the guard hears a sound and is not in Chase-mode he/she will investigate it. A waypoint will be set on the sounds origin and search for a while close to it. If the guard does not hear or see anything more he/she will go back to what it did before.
• Shooting: If the player is in line-of-sight for too long (about one second) the guard will fire his/her weapon and the game is over.

The picture shows how the guards different states changes between each other.