Values: only 1 condition met but 2 counted

[Leander]

I have a problem. In my game the player has two slots for powerups. He can carry up to two powerups at the same time. Not more.

Variable B= 0 -> slot 1 is free
Variable C= 0 -> slot 2 is free
Variable B= 1 -> carries powerup in slot 1
Variable C= 1 -> carries powerup in slot 2

1) Player collides with powerup box
if B=0 and C=0 (player has NO powerups) then set B=1.
The powerup is assigned to the first slot. Destroy powerup box.

2) Player collides with powerup box
if B>0 and C=0 (player carries one powerup in slot 1 but none in slot 2) then set C=1.
Now the player has one powerup in both slots. Destory powerup box.

3) Player collides with powerup box
if B=0 and C>0 (player carries no powerup in slot 1 but one in slot 2) then set B=1.
Now the player has one powerup in both slots. Destroy powerup box.

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When the player collects the box (ONE box) BOTH variables are set to 1.
He start with B=1 and C=1, collects the box and afterwards, B and C are set to 1. Why?

It seems as if the command "destroy powerup box" is too slow and the cpu calculates two conditions within the short time in which the box is destroyed. "Restrict actions for 1 sec" did not help either.

Could you help me please?

[Werbad]

When you destroy an object in MMF it isn't removed until the end of the event loop. So in your case the 2 top events will run since the box is still there. You can prevent this by turning on a flag on the box when it is destroyed and check if it is off in the other events.

[Leander]

Thanks.