GameMaker [SOLVED] Is there a difference between collision event and collision code in step event?

[MartinK12]

Like in the title is there a difference between using collision event or placing my own collision code in the step event?

I assume that when I put my own collision code in step event it's going to be run every step, but collision event is also running every step, right? So is there a difference between those two? Maybe performance wise?

Thank You

 

[samspade]

As far as I know, the collision event is directly equivalent to putting the following in a step event:

if (place_meeting(x, y, object)) {
     ///do stuff
}

If there is a difference it would be minimal. The real difference is control. While I'm a fan of most events, the collision event is one I never use as it is pretty rare that the pure vanilla place_meeting works for what I am doing.

 

[TheouAegis]

Biggest difference is the colliding instance is registered in an event.

if (!place_meeting(xprevious, yprevious, other.id)) {
    ///do stuff
}

That code will work in a collision event. It will not work within the block proceeding samspade's code since other points back to the calling instance at that point.

The step event equivalent is

with instance_place(x,y,object)
 with other {
    //code
}

 

[MartinK12]

Thank you for explanations