How do I pick a specific object in a family

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- heater19
- - Joined 4 Feb, 2012
  - 11 topics • 34 posts
- 1
- 14 Jan, 2019
- Quote
I've got a Family called fml_weapons with 4 sprites

the Family has a variable called 'name' and i set each sprite in the family with a unique name ('missile', 'red laser', 'green laser', 'blue laser')

what i would like to do is set the 'Z' key to fire the red laser, so i set up the code this way:

System --> Pick fml_weapons where fml_weapons.name="red laser"-->Spawn fml_weapons sprite

however, the result is a random sprite from the fml_weapons Family gets spawned

I know i could just spawn the red laser sprite on 'Z' key pressed, but this key won't always lead to the same weapon, eventually, the player will setup his weapons from an array

thanks
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- dop2000
- - Joined 26 May, 2016
  - 139 topics • 12,718 posts
- 1
- 14 Jan, 2019
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When you spawn a family, you can't control which family member will be created, it's random.

So you need to create the object explicitly: "if currentweapon=laser, then create laser, else if currentweapon is missile, then create missile" etc.

Alternatively, you can ditch the family, combine all these sprites into one as different animations. Then on "Z" pressed, you spawn this one bullet sprite and only need to change its animation.
- heater19
- - Joined 4 Feb, 2012
  - 11 topics • 34 posts
- 1
- 16 Jan, 2019
- Quote
thanks for the reply, i appreciate it;

eventually there may will be dozens of types of weapons to choose from, that's why i was thinking of a family construct to make the picking easier
- dop2000
- - Joined 26 May, 2016
  - 139 topics • 12,718 posts
- 1
- 16 Jan, 2019
- Quote
You can pick sprites by animation name. If you want to continue using the family, you'll have to add a bunch of events for creating individual weapons, there is no workaround for this in Construct 2.
- GeorgeZaharia
- - Joined 30 Jun, 2014
  - 63 topics • 2,079 posts
- 1
- 16 Jan, 2019
- Quote
as dop2000 said, you can't automatically pick instance of the family but you can give the family a couple of variables, one for the weapon it uses and a second one for the ID of the instance.

for example if you already have the sprite that carries the weapon place in screen and you don't create another one you can say

on start of layout for each sprite.withweapon ascending

sprite.withweapon.setvariable gun to "abs ( round ( random ( 0 , 4 ) ) )"

blank subevent under start layout

action wait 0

subevent

sprite.withweapon compare self variable gun if equal to 1 lets say

action

create gun on sprite.withweapon

gun set animation to redlaser.

now when it shoots, you compare which gun the sprite.withweapon has and spawn the bullet/laser based on that.

so

condition

if sprite.withweapon is shooting

and Pick sprite.withweapon where gun value is 1

action gun create laser.object at gun image point 0,0