Need advice! + screenshot

Okay, heres my screenshot of my game so far:

www.spilhost.dk/game11.JPG


All works so far, so far i made:

monster walk on path
canon fire in a range
gold given per shot and kill
Exp given per shot and kill
Start button
Loose life when monster reaches end of path
loose gold when monster reached end of path


Anyway. Now i want to make it more advanced.
I do not want the canon to be there when the game starts.
I want have it in a menu, so you can buy and place it yourself.

Maybe in some kind of grid placement?


Any ideas/advice, on how to accomplish that?


thanks guys!

i was thinking something like,

if my cannon was to cost 10 gold, then something like:

when gold under 10 gold = cannon invisible
When gold amount 10+ = make cannon visible
when visible = able to click and place cannon

im not sure, if im making any sense?
or if it can be done like that.

You could do it like that, but how about letting the user select the placement as well? I know you are new to this, so I did a quick example for you.

www.burfelt.com/temp/build.zip

That is absolutely amazing.
That was just what i wanted to make.

When i see your example, it all makes sense! :D

Thanks alot Burfelt!


Really apreciated!

all works fine now! :-)