we are working on a tactics game, with a hand drawn 2D backgrounds and 3D models moving on them. The game generates a 2D grid placed on a XY plane, with faux isometric tiles (Diamond Grid).
I have tried following the guides found here to create the "isometric" effect on the 3D models: prepared two ortho cameras, one perpendicular to the 2D elements and seeing only them and another rotated (30,45,0) which sees only 3D models. Like this:
The issue we're having is the mismatch of the positions between the elements seen by the cameras.
Character should be standing on the tile with the green border. This cannot be solved by simply moving the 3D camera to match these positions because the seem to differ for objects placed in different parts of the screen.
Could anyone please help?