[SOLVED] sprites and zorder

[Milkymalk]

When I tried to make a minigame, I came into contact with the sprite manager for the first time. So far it's nice, everything works except for one thing: This darned sprite.zorder !!!

Code: Select all

                if ballclicked >= 0 and y >=100 and y < 100+ball_h:
                    ball_kill(ballclicked)
                    bcolor = renpy.random.randint(0,ballcolors-1)
                    balls_color.append(bcolor)
                    balls_sprites.append(balls.create(ballpic[bcolor]))
                    balls_sprites[number_balls-2].zorder = 1
                    balls_sprites[number_balls-1].zorder = 0
                    balls_sprites[number_balls-1].y = 100
                    balls_sprites[number_balls-1].x = ball_xoffset+(number_balls-1)*ball_w

Ok, what happens here:
ballclicked is a theoretical ball that was clicked, calculated using mouse coordinates. The game then checks whether there is actually a ball to be clicked at that position.
If there is one, delete it (first line of the block) and then create another ball at the end of the line.
When there is a vacancy, all balls to the right of it are moved left so to make room for a new ball on the right. This happens in the update function.
Now I want the new ball to appear BEHIND the old rightmost ball so I manipulate the zorder of the rightmost ball and the one left to it, but it does nothing. The new ball seemingly randomly appears in front or behind the old ball and I don't get why.

[Asceai]

you don't appear to be updating number_balls in that code. Does it have the right value after balls_sprites.append?

[Milkymalk]

number_balls is fixed. It's just the length of the balls sprite list, so I can change it in one place when I want to use more balls. It's only "incorrect" between deleting a ball and appending the next one, which is a few lines shown here.

[Milkymalk]

Here is the complete thing, with images.

You can do:

Click a ball: the ball disappears, the remaining balls slide left, a new ball is created on the right.

Click in the lower portion of the screen: Generate a new line of balls

[Asceai]

Testing this, the new ball always appears behind the rightmost ball. Isn't this what you want?

Perhaps try updating your version of Ren'Py.

[Milkymalk]

Perhaps try updating your version of Ren'Py.

Yes, that did the trick Thank you!

The funny thing is, I usually use the newest release, but I did this on an old machine that still had the old version on it.