Setting spawn limit in endless survival game.

zefrof

I have a set of attributes (wavenumber, badguys, and start round) and a set of rules:





When an enemy is killed it subtracts 1 from bad guys. When bad guys equals 0 it adds one the the wave number and changes bad guys to 2*wavenumber.



Currently it's set to spawn every 3 seconds. I want it to only spawn the number of bad guys needed to beat a wave. I've tried this but it wouldn't spawn enemies on wave 2.



Is it as simple as changing the conditions for spawning or do I need to do something else?

MotherHoose

@zefrof … problem may be:
changeAttribute: game.waveNumber is not changed at correct time

on the Rule: when
Attribute: game.startRound is true
Attribute: game.BadGuys = 0
-changeAttribute: game.waveNumber To: game.waveNumber+1
-changeAttribute: game.startRound To: false

on the Rule: when
Attribute: game.startRound is false
-changeAttribute: game.BadGuys To: 2*waveNumber
-changeAttribute: game.startRound To: true

MH

tatiang

Try adding a buffer to the For timer so that it says 2*game.wavenumber+0.5, as I suggested above. In testing, that worked for me.

tatiang

Usually, I find that I need to add a small buffer to the For timer to allow it to successfully iterate through the Every timers. So my For timer would be something like game.badguys+0.3. What exactly is happening when you try to use game.badguys as the For timer value? Do you end up with one less than game.badguys?

Another way to limit bad guys would be to have each bad guy change attribute game.badguyCount to game.badguyCount+1 and then add a condition to your Spawn Actor behavior that says When game.badguyCount<game.badguys.

ericzingeler

Not sure if you are already doing this, you want to count your dead bad guys at point of death so you can remove that check timer. At spawn time, on a per actor basis, subtract from the dead bad guy count.

To spawn correct amount of bad guys, do something like this:

1. Every 3 seconds:
- Change attribute [StartSpawn] = 1

2. If [BadGuyCount] > 0:

(Inside of Rule 2)
2a. If [StartSpawn] = 1:

(Inside of Rule 2a)
2a-a. Every 0 seconds:
- Spawn Bad Guy
- Change Attribute [BadGuyCount] to [BadGuyCount]-1

Otherwise (For Rule 2):
Change Attribute [StartSpawn] = 0

I say something like this because I it may need to be tinkered with.

zefrof

@tatiang When I use game.badguys in the timer the first wave runs fine but as soon as wave 2 starts nothing spawns.

tatiang

In your Next Wave rule, try adding a condition for scene.time > 0.5 (or wrap the whole rule in an after 0.5 timer). It could be that when your scene starts, that rule is running before any enemies are spawning. I've had that problem before and a timer solved it.

zefrof

@tatiang I tried adding a timer it didn't work. Have any other ideas?

zefrof

By changing the rules to like @MotherHoose said (thanks) and by making the spawn like so:

attribute: game.startround is true
attribute: game.badguys = 2*game.wavenumber
timer:
for 2*game.wavenumber
every 1 sec spawn enemy

It will run the first wave fine and even start the second wave now, but the second wave only spawns 3 enemies when it needs 4 to finish the wave. Anybody think of what I can do to fix it?

zefrof

@tatiang that made it work perfectly! Thanks everybody for the help!