Question to the experimented people with overlapping tile...should i go for overlaping the canal only from one side, because, if i understood well, the overlaping sprite has to comes in front and not from the back right ?
In this case it doesnt matter, as the overlaps wont reach so far that vehicles (or in this case ships) will cross over/under them, because you only need to overlap the land and shore-line, not the water.
The only problem that may arise is that overlaps at the far ends of an actual waterway may poke through ships that pass by. If that is the case then that can be solved by extending the boundingbox of the tile with the overlap.
That is a code-job, so the graphics artist doesnt have to worry about that.
You can safely draw all of the possible overlaps for all the sides, no computers will explode
And overlaps will probably always glitch, its a "feature"
And I agree with your choice to draw the water and not the land, indeed you will then make them automatically compatible for each climate (and even snow-aware).
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