Legacy GM Variable access on Creation (?)

[MIchael PS]

Hello,


I have a small question here.
I have an obj_A and an obj_B. Through obj_ A, I create an obj_B, “instance_create(x,y,obj_B)”, and I want to access a variable in obj_B through obj_A, to change it. I don’t want to do it with “obj_B.variable” because I have a lot of obj_Bs and I want to change only the one I am creating now.
I have seen someone doing something like this:

“ var B = instance_create(x,y,obj_B);
B.variable = whatever; ”

But that doesn’t seem to work.
Any ideas?


Thank you a lot for your time,
Michael

 

[TheSnidr]

That should work though! What goes wrong when doing that?
Another way to do it is as follows:

var B = instance_create(x, y, obj_B);
with B
{
    variable = whatever;
}

 

[Carl Nylander]

the example you give is exactly what you need
why isent it working?

 

[NightFrost]

Instance create returns the id of created instance, so you dot notation B.variable will change the value.

 

[MIchael PS]

That should work though! What goes wrong when doing that?
Another way to do it is as follows:

var B = instance_create(x, y, obj_B);
with B
{
    variable = whatever;
}

Instance create returns the id of created instance, so you dot notation B.variable will change the value.

the example you give is exactly what you need
why isent it working?

Thanks for answering.
Well... I use this way and there is a message appearing that says:

" local variable inverted(100001, -2147483648) not set before reading it.
at ��ЩGct_obj_shotgun_ObjAlarm0_1 (line 2) - if inverted = true "

Here is exactly what I am using:

=The event where the obj_B is created:

repeat 10
{
var pellets = instance_create(x+lengthdir_x(10,image_angle),y+lengthdir_y(10,image_angle),obj_enemy_pellets);
pellets.inverted = true;
}


=Obj_enemy_pellets, Create ev. :

var inverted;
if inverted = true
{
direction = point_direction(obj_player.x,obj_player.y,x,y)+random_range(-30,30)
} else
{
direction = point_direction(x,y,obj_player.x,obj_player.y)+random_range(-30,30)
}

 

[TheSnidr]

The object's create event is executed before the variable is set

 

[MIchael PS]

The object's create event is executed before the variable is set

So.... What should I do?

 

[TheSnidr]

Well, you could do it like this:

//obj_enemy_pellets's create event
point_direction(x,y,obj_player.x,obj_player.y)+random_range(-30,30)

var B = instance_create(x, y, obj_enemy_pellets);
with B
{
    direction = point_direction(obj_player.x,obj_player.y,x,y)+random_range(-30,30)
}

The latter will overwrite the former

 

[Carl Nylander]

you could put the code from the create event and put in a with statment when you create the instance.

with (instance_create()) {
direction = point_direction(obj_player.x,obj_player.y,x,y)+random_range(-30,30)
}

 

[MIchael PS]

Well, you could do it like this:

//obj_enemy_pellets's create event
point_direction(x,y,obj_player.x,obj_player.y)+random_range(-30,30)

var B = instance_create(x, y, obj_enemy_pellets);
with B
{
    direction = point_direction(obj_player.x,obj_player.y,x,y)+random_range(-30,30)
}

The latter will overwrite the former

Well it worked!
Thank you for your help!!!