Checking if an object is moving away from a point?

[cheezy_squeezy]

Hi all, basically just making some enemy AI that goes to the player's last known position after they have broken line of sight behind a wall (top down game).

It all works fine apart from the enemy not stopping after it has started walking past the player's last known location. I thought this check would work (let playerx and playery be the co-ordinates for their last known location):

if point_distance(xprevious, yprevious, playerx, playery) < point_distance(x, y, playerx, playery) (stop);

My thought process is that when the enemy starts increasing its distance from the coordinates rather than decreasing it (moving away from it) it would stop, but it doesn't seem to have an effect. Am I misunderstanding something here? Cheers.

 

[FrostyCat]

xprevious and yprevious can only be used to detect position changes on or after the End Step event.

 

[cheezy_squeezy]

xprevious and yprevious can only be used to detect position changes on or after the End Step event.

Oh ok thanks. Any idea what I could do then? I'm sure you figured that that line was in the step event.

 

[FrostyCat]

Oh ok thanks. Any idea what I could do then? I'm sure you figured that that line was in the step event.

If a restaurant advertises "dinner will be served at or after 7PM" and you want dinner there, your solution would be to come at 7PM.

I said xprevious and yprevious can be used to detect position changes on or after the End Step event. Your solution would be to move that piece of code to the End Step event.

 

[cheezy_squeezy]

If a restaurant advertises "dinner will be served at or after 7PM" and you want dinner there, your solution would be to come at 7PM.

I said xprevious and yprevious can be used to detect position changes on or after the End Step event. Your solution would be to move that piece of code to the End Step event.

Oh ok sorry, thanks.