/prog/ - lol gamedev

Name: Anonymous 2007-09-20 8:08 ID:ZhhHGPCH

spot the error



    // Object-to-object, reduced bounding-box collision detector:

    short int Sprite_Collide(sprite_ptr object1, sprite_ptr object2) {

      

        int left1, left2;

        int right1, right2;

        int top1, top2;

        int bottom1, bottom2;



        left1 = object1->x + object1->col_x_offset;

        left2 = object2->x + object2->col_x_offset;

        right1 = left1 + object1->col_width;

        right2 = left2 + object2->col_width;

        top1 = object1->y + object1->col_y_offset;

        top2 = object2->y + object1->col_y_offset;

        bottom1 = top1 + object1->col_height;

        bottom2 = top2 + object2->col_height;



        if (bottom1 < top2) return(0);

        if (top1 > bottom2) return(0);

      

        if (right1 < left2) return(0);

        if (left1 > right2) return(0);



        return(1);



    };

Name: Anonymous 2007-09-20 8:22 ID:Heaven

I found it: The code doesn't use Lisp.

Name: Anonymous 2007-09-20 8:23 ID:Heaven

Oh, there's another one: Only fags use () for return.

Name: Anonymous 2007-09-20 8:40 ID:TOf2w2wF

I know, I know! This code doesn't use XML at all! This will never scale. And directly accessing the sprites properties? Puh-leeze, what is this, 1980? Nice portable assembler, hon. What this code need is some encapsulation. We'll spruce it up with some getter and setter functions, give it a look that says "I am in control of my own state".
Just sit back and relax, cause when I'm done, baby, your code is going to look fabulous!

Name: Anonymous 2007-09-20 8:58 ID:wAA7Iiwp

>>3
ding ding ding

Name: Anonymous 2007-09-20 8:59 ID:J8KVZPzg

> != >=

Name: Anonymous 2007-09-20 9:23 ID:FrmRTxm7

      if (bottom1 < top2) return(0);
      if (top1 > bottom2) return(0);

      if (right1 < left2) return(0);
      if (left1 > right2) return(0);

Non-exhaustive patterns in function Sprite_Collide

Name: Anonymous 2007-09-20 9:25 ID:KCVuhzLh

What happens when one object is completely inside the other?

Name: Anonymous 2007-09-20 9:51 ID:A25gcm9c

bottom = top + height
should obviously be:
top = bottom + height

Name: Anonymous 2007-09-20 9:52 ID:wAA7Iiwp

>>8
Nesting, not unlike that of a bird.

Name: Anonymous 2007-09-20 10:29 ID:7MfP+ydu

>>8
Fairy hentai?

Name: Anonymous 2007-09-20 12:31 ID:9kSo6NLc

>>9
(0, 0) is obviously in the top left corner

Name: Anonymous 2007-09-20 12:51 ID:Heaven

top2 = object2->y + object1->col_y_offset;

Name: Anonymous 2007-09-20 13:47 ID:tpQEyTGW

>>12
In OpenGL it's the bottom-left corner.

Name: Anonymous 2007-09-20 14:35 ID:ZhhHGPCH

You're all retarded. Here's the correct code:

collides :: Rect -> Rect -> Bool

collides ((a,b), (c,d)) ((e,f), (g,h)) = 

    (d < f &&  b > h) || (a < g && c > e)

can you spot the error in the original?

Name: Anonymous 2007-09-20 14:39 ID:SRRHP2qB

>>14
you're a fucking idiot. That's blatantly false.

Name: Anonymous 2007-09-20 15:19 ID:TOf2w2wF

>>16
It can be, if you want it to.

Name: Anonymous 2007-09-20 16:39 ID:4dGLQdbu

It needs the <=> operator

Name: Anonymous 2007-09-20 17:59 ID:HE5W5BKM

Uh, in OpenGL (0,0) is the bottom-left corner of the plane. Get it right, new fags.

Name: Anonymous 2007-09-20 20:17 ID:el8zAX9F

uses faggot coordinate system (left-handed)

Name: Anonymous 2007-09-20 23:46 ID:Heaven

"short int"

Name: Anonymous 2007-09-21 13:04 ID:zHDvXszQ

>>20
I masturbate with my right hand. Which coordinate system should I use?

Name: Anonymous 2007-09-21 14:53 ID:XWdqCkqr

>>22
See here: http://xkcd.com/199/

Name: Anonymous 2007-09-21 14:55 ID:Heaven

>>23
Too bad that xkcd sucks

Name: Anonymous 2007-09-21 16:11 ID:XWdqCkqr

>>24
Too bad there's an xkcd for every situation.

Name: Anonymous 2007-09-21 16:29 ID:6l0c3uQr

top2 = object2->y + object1->col_y_offset; // What the fuck? object1?

Name: sage 2007-09-21 16:50 ID:Heaven

>>23
XKCD SPOTTED

AUTOSAGING ENGAGED

SAGE

Name: Anonymous 2007-09-21 17:18 ID:UZaw9GJ7

>>25
And what of it? They aren't funny in most cases.

Name: Anonymous 2007-09-21 17:37 ID:XWdqCkqr

>>28
All I know is that I've seen more good jokes from xkcd than from you. Pot, meet kettle.

Name: Anonymous 2007-09-21 17:40 ID:Heaven

>>29
My other car is a cdr.

Name: Anonymous 2010-12-09 15:45

Name: Anonymous 2011-01-31 20:37

<-- check em dubz

Newer Posts

lol gamedev

1 Name: Anonymous 2007-09-20 8:08 ID:ZhhHGPCH

2 Name: Anonymous 2007-09-20 8:22 ID:Heaven

3 Name: Anonymous 2007-09-20 8:23 ID:Heaven

4 Name: Anonymous 2007-09-20 8:40 ID:TOf2w2wF

5 Name: Anonymous 2007-09-20 8:58 ID:wAA7Iiwp

6 Name: Anonymous 2007-09-20 8:59 ID:J8KVZPzg

7 Name: Anonymous 2007-09-20 9:23 ID:FrmRTxm7

8 Name: Anonymous 2007-09-20 9:25 ID:KCVuhzLh

9 Name: Anonymous 2007-09-20 9:51 ID:A25gcm9c

10 Name: Anonymous 2007-09-20 9:52 ID:wAA7Iiwp

11 Name: Anonymous 2007-09-20 10:29 ID:7MfP+ydu

12 Name: Anonymous 2007-09-20 12:31 ID:9kSo6NLc

13 Name: Anonymous 2007-09-20 12:51 ID:Heaven

14 Name: Anonymous 2007-09-20 13:47 ID:tpQEyTGW

15 Name: Anonymous 2007-09-20 14:35 ID:ZhhHGPCH

16 Name: Anonymous 2007-09-20 14:39 ID:SRRHP2qB

17 Name: Anonymous 2007-09-20 15:19 ID:TOf2w2wF

18 Name: Anonymous 2007-09-20 16:39 ID:4dGLQdbu

19 Name: Anonymous 2007-09-20 17:59 ID:HE5W5BKM

20 Name: Anonymous 2007-09-20 20:17 ID:el8zAX9F

21 Name: Anonymous 2007-09-20 23:46 ID:Heaven

22 Name: Anonymous 2007-09-21 13:04 ID:zHDvXszQ

23 Name: Anonymous 2007-09-21 14:53 ID:XWdqCkqr

24 Name: Anonymous 2007-09-21 14:55 ID:Heaven

25 Name: Anonymous 2007-09-21 16:11 ID:XWdqCkqr

26 Name: Anonymous 2007-09-21 16:29 ID:6l0c3uQr

27 Name: sage 2007-09-21 16:50 ID:Heaven

28 Name: Anonymous 2007-09-21 17:18 ID:UZaw9GJ7

29 Name: Anonymous 2007-09-21 17:37 ID:XWdqCkqr

30 Name: Anonymous 2007-09-21 17:40 ID:Heaven

32 Name: Anonymous 2010-12-09 15:45

33 Name: Anonymous 2011-01-31 20:37