how do you make a tower defence game?

Yes, it absolutely can be done with MMF2...

I'm working on one now. The only difficult part is PATH FINDING. I just asked a question related to this topic myself.

I'll be happy to share my progress with you as it happens. right now, it hasn't happened.

Path finding shouldn't be difficult. You could just set the movement as "Path" and then set the path down the route you want the enemies to take.

Quote from JoshHarris

Path finding shouldn't be difficult. You could just set the movement as "Path" and then set the path down the route you want the enemies to take.

..you've obviously never played tower defense.

heh... there are some versions that the bad guys follow a pre-determined path, but the best tower defense games start with an open field.

I would love to get a good discussion going to handle the type of path-finding needed.

How could it possibly work if the enemies followed a pre-determined path? The idea is that the towers control the path of the enemy..

yes, in most cases... many of the tower defense games i've seen have roads, and the bad guys stay on the roads. You build the towers along the road. Typically, such games have only a few waves per level.

Here's a good example...
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Really? I've only ever played tower defense games in which your towers control the path of the enemy, and you build towers to block (well, redirect) the enemies and shoot at them.

How's about putting a giant invisible circular object around your enemies and when that circle collides with a tower the enemy bounces or tries another direction?

Tuna I answered your thread regarding pathfinding. Use the APF object defiantely.

And to answer OP's question, yes tower defense is definately possible, but unless you are experienced with MMF I would suggest going for something easier first go.

I'd go for a pre-determined path.
Here's a link to a game that I've been playing since its release because it's addicting:

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You could use a Path Movement for the enemies.

I've played a Tower defense map in Starcraft where waves of enemies follow a path and you have to build up cannons and turrets to destroy the waves before they reach the end of the path. So that is an example of one that uses predetermined paths.

There is a really good tower defence game on steam called "Defence Grid : The Awakening" in case you haven't played it. In that, the places you can build are fixed, the enemy paths are fixed, unless it is a level where you are allowed to block the enemy, when they go around your towers.

One of the biggest problems in MMF is not the path finding like you'd think (you can always make a fixed path version, but if not the APF object is really good), but choosing the right enemy for the turrets to shoot at.

Quote from Dynasoft

One of the biggest problems in MMF is not the path finding like you'd think (you can always make a fixed path version, but if not the APF object is really good), but choosing the right enemy for the turrets to shoot at.

On the surface, that could seem daunting... but I'd say it shoots at the first enemy to enter the zone and keep shooting at it until it's defeated. I would set a flag on that enemy, or something like that.

say enemy1 enters the zone. It gets an integer of 1 set. the tower begins shooting at it. enemy2 enters the same zone. it gets an integer of 2 set. now the tower has to choose a target. make the tower shoot at the one with the lowest integer variable it can find.

Now make it work for multiple towers and enemies...

MMF has never been very good at multiple<->multiple relationships between objects.

It's still very possible, though. Just spread a value and loop through them.

Or use LUA and you can get things done 10x faster and easier