I have my enemies chase my player but when they catch him what is the best way to calculate damage. I would like to have it so they take so many hit points per second but I can't figure out how to make that work.

Also does anyone know of any good tutorials for the RTS movement. I got the basics down but I need to get some more complicated functions out of it.

Thanks again you guys are great.

First is very simple, how do I stop moving sprites from overlapping one another, this is top-down style, multiple zombie enemies chasing a human, I don't want the zombies to overlap one another.

Second question is a little more involved. I am having problems with certain events happening instead of other ones. I used the else command to fix one problem I had like this but I have run into another that the else command won't seem to fix. I want the zombies to follow you until you get into a house then I want them to go to the nearest door or window. So far I have the chasing outside down but so far I've just tried to get them stop when you go in the house and I can't get it to work. I am doing this with the RTS movement behaviour on the zombies. I have a tiledbg for both the house floor and the grass outside. If you are overlapping the grass the zombies should follow you, if you are overlapping the floor they should go the doors and windows. Any tips? Thanks

The else command did it, thanks alot.

I am trying to make a door, it has a solid attribute, when you shoot it the solid attribute is removed and the doors opacity is lowered. When you shoot it again it is supposed to add the solid attribute and raise the opacity back to %100.

I have to separate events which are the exact opposite of one another, I can get one at a time to work, but not both.

here is a pic of my event sheet, what am I doing wrong?

<img src="http://i45.tinypic.com/2r7y4w8.png" border="0" />

PS I am still pretty new to this.

Thanks a lot for the tips guys, I it goin now.

Is there a way to make one instance of an object control a specific instance of another? Like a switch that opens a door. Or do I have to make each switch and door a separate object with separate events?

Thank you.