Tinting objects in every room - "invalid object" error (SOLVED)

[Akril15]

I'm working on a game that's going to have a day/night cycle, and since most of the rooms have at least one object in them, I want a a code that tints every object in every room when it's night. I thought this would work:

Code: ags

if (day==false) {
        object[0].Tint(10, 10, 200, 70, 40);
        object[1].Tint(10, 10, 200, 70, 40);
        object[2].Tint(10, 10, 200, 70, 40);
        object[3].Tint(10, 10, 200, 70, 40);
                }
    else {
        object[0].RemoveTint();
        object[1].RemoveTint();
        object[2].RemoveTint();
        object[3].RemoveTint();
          }

But every time I open the game, I get an error at line 9 with the comment "SetObjectTint: invalid object". How can I fix this?

[Slasher]

I assume you have checked all object ID's?

[Matti]

You may save some work if you do this:

Code: ags

int i;

if (day==false) 
{
  for (i = 0; i < Room.ObjectCount; i++)
    object[i].Tint(10, 10, 200, 70, 40);
}
else 
{
  for (i = 0; i < Room.ObjectCount; i++)
    object[i].RemoveTint();
}

[Akril15]

I assume you have checked all object ID's?

Could you please elaborate on this? If I'm missing something obvious, I apologize.

Matti, I'm using AGS 3.3.3 -- I can't use "for" in that version.

[morganw]

I assume you have checked all object ID's?

Could you please elaborate on this? If I'm missing something obvious, I apologize.

I think just that, if you are accessing objects by an index you have to be sure that the index is valid. Your error suggests that you are trying to reference an object that doesn't exist, but using Room.ObjectCount should fix that.

Matti, I'm using AGS 3.3.3 -- I can't use "for" in that version.

You can do it with a while loop, you just have to manage the counter yourself.

Code: ags

int i = 0;
int max = Room.ObjectCount;
  
while(i < max)
{
  if (day)
  {
    object[i].RemoveTint();
  }
  else
  {
    object[i].Tint(10, 10, 200, 70, 40);
  }
    
  i ++;
}

[Akril15]

That works perfectly, morganw. Thank you very much!