[release] Invaders.

[Netaro]

Well, hello there, this is my 1st post!

So, there:
http://rapidshare.com/files/68964243/INV.rar.html
is a little game that i coded myself.
That's the galaga'ish game, in which your only objective is to shoot enemy ships.
The controls are simple, X shoots, left/right moves the ship, select opens pause menu.
As for now, the game is playable, has no known to me bugs (if you find any errors, please tell me immediately!), and features a hiscore and save/load system.
The game was coded in c++, using Brunni's OSLib.
I'm going to add some new features in the future, like special power-ups and so forth...
So, how do you like it? Please let me know :)

[eldiablov]

Very nice fist post. Welcome to QJ.

For new homebrew screenshots are always appreciated.

[Netaro]

Screenshot... I knew i forgot something :)

[eldiablov]

For a first game thats very nice. I might give it a try later on.

[Moose]

I'm gonna check this out, thanks.

[eldiablov]

As a hint you can wrap your screenshot in image tags ...

[ZereoX]

This really addictive I play for like 45 min non stop... A bit hard to see the bullets but overall great first game.

[headlesslizard]

Nice! The background seemed out of place though.

[Mraellis]

someone plz up it to megaupload i hate rapidshare ( or yousendit thats better)

[Sonoe]

Yeh welcome nice youll settle easy as developing so enjoy the forums well be waiting for more ideas or updates from you :)

[Netaro]

Thank you for all the comments

I've started writing the power-ups, but thanks to the "lack of time", i doubt it will be ready soon, but i'll try to make it by next sunday.
And by the way, anybody have some "health bar" code snippet? Something like those in rpg's games, when we have three variables (actual hp, max hp, width of the bar), and we fill the bar in according to these? I've tried writing it by myself, but it wasn't working correctly, so i deleted it.

[ghostENVY]

thanks for your contribution

[Judas]

void draw_health(int hp,int maxhp,int x,int y) {
	float width = ceil(100 * (hp/maxhp));
	fillScreenRect(red,x,y,width,20);
}

There's a small snippet of a health code. It draws a health bar based on the ratio of hp/maxhp (percentage of health). The max width is 100 pixels. So if the maxhp is 50 and hp is 25, it'll draw a bar 50 pixels wide (50%).

[youresam]

void draw_health(int hp,int maxhp,int x,int y) {
	int width = 100 * ceil(hp/maxhp);
	fillScreenRect(red,x,y,width,20);
}

There's a small snippet of a health code. It draws a health bar based on the ratio of hp/maxhp (percentage of health). The max width is 100 pixels. So if the maxhp is 50 and hp is 25, it'll draw a bar 50 pixels wide (50%).

Hmm.. since hp and maxhp are both integers, when you divide them, wouldnt it return the floor of the floating point result? Causing ceil() to be useless since it would return the same number..
I don't know if this is true in C++ though, I know it is in java..

Wait a minute, if hp is 25 and maxhp is 50, even if it worked the way you intended, ceil would return 1 (25/50 = .5), causing width to be 100 * 1..

Meh I'm lost.

[Judas]

Hmm.. since hp and maxhp are both integers, when you divide them, wouldnt it return the floor of the floating point result? Causing ceil() to be useless since it would return the same number..
I don't know if this is true in C++ though, I know it is in java..

Wait a minute, if hp is 25 and maxhp is 50, even if it worked the way you intended, ceil would return 1 (25/50 = .5), causing width to be 100 * 1..

Meh I'm lost.

You're right, it's got to be a float. Thanks for pointing that out.

EDIT: Think I got it right. I know I haven't done much programing lately, but that was kind of retarded of me.

[youresam]

Still though, I think int divided by int returns int, no matter what..
So like, making the first two params float would work.

Then again, I could be wrong. I'm basing this off of Java.

[danzel]

You are right, you don't need a float however, you could just do this:

void draw_health(int hp,int maxhp,int x,int y) {
	int width = 100 * hp / maxhp;
	fillScreenRect(red,x,y,width,20);
}

Then thanks to BEDMAS, the hp will be multiplied first, so your number will end up in the correct bounds.

[Netaro]

Well, i;he just got new pc with vista, and of course there are some problems...
So, i've made everything under dev-cpp when on XP, but because dev isn't working on vista, i've installed Visual studio .net 2003. And so, how do i set that ide to make eboots?

[BigSanFrey]

try this:

link

[Netaro]

Thank you, BigSanFrey, it helped a lot :)

And so, i wrote some more, and thus the 1.1 version of Invaders is compiled.
Changelog:
Some changes in menus.
PowerUP's were added:
- HPplus, which restores your life by 1, or gives you a +1 total life when hp is full.
- Triple bullets, pretty self explanatory
- Powerplus, with every collected, bullets deal more damage.
4 randomized backgrounds, all thanks to Google search engine.
Each new wave of enemies is stronger, so they take more hits to be killed but also yield more points to the score.

Known bugs:
VERY infrequent crashes. I was able to play for whole hour without any problem, sometimes it just comes quick. In all cases the Triple bullet was on, but upon further inspection of code nothing suspicious was found
Also, previous savestate isn't compatible .

Also, Source code distributed under GPL is included in .rar. Please, if you don't mind, check it and tell me, what should i do with it, what improvements could me made.

So, nice time playing it :)

http://rapidshare.com/files/73679971/INV_1.1.rar.html

[BigSanFrey]

ooh, i might try this now... sounds pretty good!

[andyauff]

Looks good, nice work!

[Anti-QuickJay]

This is a great game for a first release.
Good job!

[Adiuvo]

Mirror.

And like everyone else, great job, especially on a first release. It's nice not to have button testers :)

[Netaro]

So, thank you all for these nice comments, so soul-lifting :).
But, what do you think about the source code? I'm thinking about somewhat bigger project, but i'd like to know what do you think about the quality of my c language. What should i change, what should i rewrite, which parts suck and which doesn't. I'm still learning, so any info would be very, very appreciated :)

[HippyG]

Great first game, man, keep it up!!!
Welcome to Qj