Line of sight

[Beginier]

I'm working on an AI engine for my game and I want the enemy to only move towards the player when it can see it, I have heared of line of sight and I think it is exactly what I need. Could someone give me an example of how to use it?

[Stephen]

You would need to use the Advanced Direction Object, and compare the distance between the player and enemies. Then run a loop to make sure that there are no obstacles between the player and the enemy.

stephen1980

[Beginier]

im confused how does the loop tell if there are obstacles?

[nivram]

A simple reverse method, maybe, would be have your enemy shoot a detector towards the character, and if it hits the character, have the enemy attack. I know that is an older method, but works.

Marv

[RickyRombo]

Theres also a tut on the dailyclick somewhere about the "last" line of sight method. It's very good. I can't provide a link

[uprize]

Here are a few interesting articles describing Line of Sight further:
http://www.create-games.com/article.asp?id=1761
http://www.create-games.com/article.asp?id=1620
http://www.create-games.com/download.asp?id=7524