I have created a simple isometric game engine. I am encountering some rendering issues with objects transitioning between tiles that are taller than one unit. I've looked at several forums and articles about isometric depth sorting, but didn't find anything that worked. The basic algorithm involves rendering from back to front and bottom up (back to front on a per level basis, since I have multiple heights). The obvious problem is that the object that is higher than one unit is cut off by other objects at the higher level. To resolve this issue, I modified the algorithm to draw by level up until an object that is higher than one unit and then draw the level(s) above until all the objects "behind" the higher object is drawn. After this, I go back to the unfinished lower level and finish it, then continue as before drawing by level. This does cause some other issues, however. It is not clear which objects are "behind" the taller object when it is transitioning between tiles. Does anyone have any ideas or suggestions? Thanks in advance.

Hi Tok,

Thanks for your feedback.

You are right for static objects, but I'm doing an application were the objects can move in between tiles. That's why I'm using a "per level" algorithm.

So think a character moving on a tile base grid. If we are using only a back to front algorithm, the character will be moving in between rendering "plane" and the, is feet will be render before the floor that is in a lower plane or if he's walking on a set of objects, before theses objects. Se we'll loose his feet every time is walking.

That's why I'm using a per-level system.

But I progressed on my problem. By working on the algorithm, I achieved to solve almost all my rendering issues. My only remaining problems are with ramps, when my object is moving "in-between" levels... I'm still working on this!

Js