Vector getting transformed by blackboard?

Development Programming & Scripting
1

Hi,

Somehow a point (vector) I randomly obtained inside a BT Task is getting transformed when I store it in the Blackboard. I would like to know why this happens.

For debugging purpose I draw a line from my Pawn’s current location to this randomly obtained point. If I draw this line before I store this point in the Blackboard, I get the yellow line. If I draw the line after storing this point in the Blackboard and getting it back from the Blackboard, I get the red line.

The consequence of this is that if I use this vector to move my Pawn before the vector gets transformed, the Pawn moves along the yellow line. If I use the vector to move my Pawn after the vector gets transformed by the Blackboard (in another BT Task for example), it moves along the red line.

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2

Jesus! You are right! How did I miss that?! Promoting the return vector to a variable should solve the issue. Thanks! I guess I really need some sleep XD

3

Hello

Here is what is happening with you vector issue. Every time the “Random Reachable Point” node is referenced, it draws a NEW random point. By this I mean, when you call “Set blackboard value” it grabs a random value and sets it, then when you call draw debug line, it calls another random value to draw the line. An easy solution will be to have a vector variable “Random Point” that calls “Random Reachable Point”, then you reference the variable when ever you need it.
I hope this is helpful.

Thanks,