C++ - Stuck on task 5 of Ellen's Alien Game

[old robin]

Hello there everyone, in the Classes exercise Ellen's Alien Game, I can't figure out a way to compare 2 Aliens Classes Objects. I've asked around with friends that know about programming, but they give out answers that use for loops, arrays and vectors. I know the array and vectors comes after, but the for loops is on the same level, should I do the for loops first then the classes after? (The tips on the task 5 doesn't mention anything too).

Thanks for everything!

[winter moon]

The exercise doesn't ask you to do anything with loops nor to write a comparison function.

The collision function needs to check if two objects have the same coordinates.

What needs to be true for two objects to have the same coordinates?

[old robin]

for 2 objects have the same coordinates

ops

sorry i misread

[winter moon]

👍

[old robin]

but how to call objects

i'm kinda lost

[winter moon]

"call" objects?

[old robin]

i mean

the exercise give the Alien lrrr and Alien ndnd

how do I check their coordinates?

if they doesn't exist yet

while I write the code

thats im kinda lost

[winter moon]

How do you check if the alien is alive if the alien doesn't exist when you write the code?

[old robin]

if their health is > 0

[winter moon]

Classes can have member variables and member functions. They are accessed by the member selection operator ..

Check if the coordinates of the two are the same

Logically, how would you check if the coordinates are the same?

[old robin]

if 2 aliens have the same x and y

[winter moon]

Do you know how to access the x and y of the two aliens?

[old robin]

calling the alien class?

like Alien(int x, int y) ?

[winter moon]

That creates a new Alien

How do you access the health of the alien?

[old robin]

get_health() command

[winter moon]

How does get_health() access the health of the alien?

[old robin]

sorry if I'm being kinda dumb btw

return health

[winter moon]

So you can directly access the health variable, right?

[old robin]

yes

[winter moon]

And you can do the same for the coordinates?

[old robin]

yes

[winter moon]

So that's how you'd get the "self" Alien coordinates, right?

[old robin]

return x_coordinates?

[winter moon]

...without a return.

And you can use the . to access attributes of the other Alien

[old robin]

im going to try something here, I will return if I did it soon

thanks very much

[winter moon]

Good luck

[old robin]

I passed

i will try adding the y_coordinate just to be more correct

[winter moon]

Hah. I'm surprised the tests let you pass by checking only the x

[old robin]

welp, at least you know it can get fixed hahah

[winter moon]

Please use codeblocks and not images to share code. Some people have a hard time reading pixels.

[old robin]

oh

ok

sorry

but thanks very much

[winter moon]

No worries. Live and learn!

[old robin]

and sorry for being kinda thick skulled also

[winter moon]

You're very welcome

We all had to learn it at some point!