Re: [Super-tux-devel] Gameloop Rewrite Status

[Tobias <tob...@gm...>]

Am Sa, den 03.01.2004 schrieb Ingo Ruhnke um 07:50:
> Ricardo Cruz <ri...@ae...> writes:
> 
> >  You could also have a look at one of the Ingo's games, like
> > Windestille or Pingus (they are c++, but may be helpfull).
> 
> Pingus uses just a single pixel (or sometimes two) for collision
> detection. Windstille, even so it has some bitmask code, doesn't use
> it at the moment and instead uses some quick collision-rectangle
> hacks. So both aren't really good examples.
> 
> Using multiple bitmaskes (one for the top, another one for the sides)
> might work, calculating the entry-vector into the enemy might also
> provide some informations, but I havn't really found out myself on how
> to solve this problem cleanly.

My aim is to calculate the angle in which object A got hit by object B,
like described in the tutorial Ricardo showed us.
And I don't want to use bitmap-collisions for all objects, but for Tux
in example. :)
The code handling already calculated collisions will look like this:

void badguy_collision(bad_guy_type* pbad, int c_object, int angle)
{
/* Handle collision with Tux, but don't touch tux's internals, only
touch the badguy's internals */
if(c_object == CO_TUX)
{

if(angle == 0)
pbad->dying = FALLING;
...

}
}



Greetz...

Tobias Gläßer

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