[SOLVED] GML: sprite_width not working

[SOLVED]

Every time I try to use sprite_width, it returns zero.

Example:

or

This always returns zero, which is obviously not what I'm looking for. The actual width of the sprite is 128 pixels; the subimage width (which I'd really like) is 8.

I've also tried using objectname.sprite_width which also returns 0.

How do I get this to work properly?

This post has been edited by xn--e5x on Jul 3 2008, 06:33 PM

I dunno if you can use spritename.sprite_width with sprites that aren't currently being used by the active object.

I tried

draw_text(x,y-48,""+string(sprite_width));
draw_text(x,y-32,""+string(sprMarioSmall.sprite_width));

and it worked fine, both returned 16. But when I tried a sprite that wasn't being used by the object like

draw_text(x,y-48,""+string(sprite_width));
draw_text(x,y-32,""+string(spr8x8.sprite_width));

and it returned an error. The sprite of the object was sprMarioSmall and not spr8x8. Does that help? :S

Turns out I was trying something I wasn't supposed to do with object-oriented programming.

I got it working by calling the script from an object and giving that object a sprite. Turns out that if you call a script from an object, the object's values carry over into the script. So I don't have to pass any sprite references to the script.

Is this calling a script from a script in an object or in drag and drop?

I noticed that in drag and drop it lets you define which object -- if any -- calls a script, and that object will be considered the host of that script

Both are possible. Like

other(sprite_index=spr_big);
objThing.sprite_index=spr_big;
102115.sprite_index=spr_big;

or just select the object in DnD.

You could also get the ID of an object and use that like

objID=(whatever object);
objID.sprite_index=spr_big;

Either way you catch the object's variables as long as you call what object you're using first (objID, the physical ID, other, or the actual object name).