[FMX,AS2] game help - hittest and distance

actionscript help in game
i am working on a game called “virus”.
you click somewhere on the screen and the virus goes to where you click.
you have to dodge random moving white blood cells, and if you hit them you lose. everything is working. except for one thing.

scoring.

i have made a movieclip with a dynamic textbox in (score), and in the movie clip there is a section where the number in the score textbox goes up really quickly, a section where is goes up medium, and a section where it goes up slowly.
i want to make it so that when you get closer to the center of the movie, for the score to go up quicly, and slower as you get further out.

i have tried hittest with movie clips in the centre of the stage, but it doesnt seem to work.

i have flash mx 2004.

help very much appreciated. thanks a lot in advance!

:slight_smile: