Modifying a type from a function

Blitz3D Forums/Blitz3D Programming/Modifying a type from a function

slenkar

(Posted 2004) [#1]

O.K. some questions please

1.How do I create a function to modify values in a type without calling the type in the function?
e,g,

for b.blue_car=each blue_car
damage_car(blue_car,20)
next

function damage_car
b.hull=b.hull-20
end function

2.Can one function be used to modify 2 different types?
e.g.

for b.blue_car =each blue_car
damage_car(blue_car,20)
next

for b.blue_van=each blue_van
damage_car(blue_van,20)
next

or do I have to create a damage_van function??

Jeppe Nielsen

(Posted 2004) [#2]

for b.blue_car=each blue_car
damage_car(blue_car,20)
next

function damage_car(b.blue_car,damage)
b\hull=b\hull-damage
end function

2. No, not directly, you could use the object/handle commands, but it will not be elegant.
Instead why not create one type called vehicle, and then have a field called class, that defines whether its a car or, like in your question, a van, or whatever?

Hope this helps.

slenkar

(Posted 2004) [#3]

o.k. thats good thanks
P.S. can your GUI be used for blitz3D

Jeppe Nielsen

(Posted 2004) [#4]

Yes, only for Blitz3D, as it uses quads to display it.

mr.ninja

(Posted 2004) [#5]

I was about to ask the same question, but I found this thread first.

I have another question, though:

What if I have

for b.blue_car=each blue_car...

and

for c.blue_car=each blue_car...

How can I access b\hull, c\hull etc. from the same function?

Thanks a lot
Paolo

Jeppe Nielsen

(Posted 2004) [#6]

Oops, the above piece of code was wrong, here is the corrected:

for b.blue_car=each blue_car
damage_car(b,20)
next

function damage_car(b.blue_car,damage)
b\hull=b\hull-damage
end function

@mr.ninja
You can use the same function like this:

for b.blue_car=each blue_car
damage_car(b,20)
next
for c.blue_car=each blue_car
damage_car(c,20)
next

mr.ninja

(Posted 2004) [#7]

Thanks a lot!

Paolo