Tiles, solidity and sprites

[Vincent]

Hi guys,

I've got question regarding tiles, solidity and sprites.  In my project, my sprite is centered in a big space.  The image in my sprite is maybe 100 pixels tall by 40 pixels wide, but some animation will make it larger or higher, so I centered the image in a 128x128 pixels square.  (That may be my first mistake...)  Now, when I move the sprite in a map-layer, the solidity of the tiles reacts with the border of the empty space of the sprite: making the sprite "levitate" over the tiles.  Is there a way to make the tiles react with the collision mask of a sprite rather than with the borders of the sprite?  (Without writing custom code I mean...)  Is there a way another way to do this?  (I mean, rather than leaving blank spaces around the sprite?)  Any suggestion is appreciated!

Thanks guys!

[Vincent]

Well, finally I used a workaround. 

I created another sprite, with correct dimensions and I am placing the huge sprite is following it.  So the detection for the tiles is done by the small sprite and collision with other sprites is made with the CollisionMask of the huge sprite.  I had to alter the source code a little, but, it works fine.

If someone has an alternative, I would be happy to hear it.  Otherwise, don't spend to much time on this one.  (Since I already found a solution...) 

Thanks everyone!

[bluemonkmn]

There are two better ways to handle this:
1. In the Frameset editor shift the image of the sprite up and left to eliminate the empty space above and to the left of the frame(s).  In the sprite editor, change the width and height of the sprite to eliminate the empty space to the right and below each state of the sprite.
2. Don't create images larger than necessary.  Just define the sprite states using images of varying sizes by referring to frameset(s) that refer to graphic sheets with different cell sizes.  This is allowed, and then SGDK2 will prevent you from switching to a state if there isn't room, for example, to stand up.

Press F1 on the sprite editing screen and look at the help for "Width, Height".

[Vincent]

Oh!  This is very interesting!  I didn't think that SGDK2 would prevent changing to a state when and where there is isn't enough room!  Great!

Thanks a lot!