Turret Attributes?

FlightfreakApps

Hey everyone, I need some advanced help.
I'm making a missile defense game (here's a screenshot)

http://i51.tinypic.com/10rpz12.jpg

The missiles will come in from the top of the screen, and the player's job, of course, is to protect the city from destruction. What I need help with is how the player will shoot down impending doom. I want a bullet to originate from the bottom of the screen and head for where the player taps. Any help? Thanks!

BrynjeBamsen

phew... you're asking quite alot in one question.
Have you looked at all the videos in the CookBook and on youtube. All your answers are there.

But here goes nothing

Firstly: Make a Turret actor. Place it where you want it to shoot from.
Then open the actor and create a new rule:

If touch is pressed
Constrain Attribute: vectorToAngle(game.Mouse.Position.X-self.Position.X , game.Mouse.Position.Y-self.Position.Y)

Spawn Attribute
Actor: (your bullet) in back of layer

Open up you bullet actor:
Put in a move behavior
Direction 0 relative to actor
Speed = (what ever you want)

Killing your enemy:

Create a new rule on your bullet:
If actor overlaps or collides with enemy
Destroy

Create new rule on enemy:
If actor overlaps or collides with bullet
destroy

Create a new integer game attribute called score
Make an Actor called score
Set opacity to 0 and put a text behavior and give it a bright color.
where it says hallo world, theres a small e where you select your game.score attribute.

put the actor in your scene.

Go back to your enemy:
In the other rule you made, put in a change attribute behavior
Change attribute game.score to game.score+(how many points you want for killing and enemy)

There... i made the game for

BrynjeBamsen

You might even wanna make all of your building separate and give then each of them a life attributes.
If you have 3 images of each building. you can make it the buildings crumble each time it gets hit but your enemy missiles.

FlightfreakApps

How exactly do I do the first constrain attribute behavior? I am confused as to how I would enter two mouse coordinates and a VectorToAngle in one Constrain Attribute behavior. Is it possible that you could link me to a video or a screenshot on how to enter these attributes?

Thanks.

JohnPapiomitis

Hey There,

You use the expression editor to get it all in the same expression. But it seems to me like your getting ahead of yourself. You should check out all the videos on the gamesalad cookbook youtube channel and on gshelper.com

FlightfreakApps

Okay, I got part of it. If I use this Constrain Attribute Behavior (the second box (To:) says: vectortoangle(game.mouseposition.x , game.mouseposition.y).

http://i51.tinypic.com/s6hb1z.jpg

So what should be in the first box (Constrain Attribute:)?

Sorry for the noobish Questions. Thanks for all your help!