Path: chuka.playstation.co.uk!news
From: 2bad@lineone.net (Tanvir Khan)
Newsgroups: scee.yaroze.beginners
Subject: Collision Detection
Date: Mon, 14 Sep 1998 17:29:23 GMT
Organization: PlayStation Net Yaroze (SCEE)
Lines: 70
Message-ID: <35fd526f.9192286@news.playstation.co.uk>
NNTP-Posting-Host: host5-171-230-69.btinternet.com
X-Newsreader: Forte Free Agent 1.11/32.235

Hi,

I am still getting nowhere with collision detection even after some
help from George Bain's sample, so I am putting some bits of the code
of the code I'm working on for your knowledge so you know whats going
on.

I want a 3D car to collide once it is of the track which is made of
cells.

The struct of the car is:

typedef struct                         
  {                                                
  SVECTOR         rotation;                         
  long            speed;                              
  GsDOBJ2         Object_Handler;                    
  GsCOORDINATE2   Object_Coord;  
                                                   
  } Object_Header0;
Object_Header0    CarModel;                           

Track struct is:

typedef struct                                      
  {                                                   
  long            numberObjects;                      
  GsDOBJ2         Object_Handler[GROUND_MAX_OBJECTS];
  GsCOORDINATE2   Object_Coord[GROUND_MAX_OBJECTS];   
  u_long          *Back_Pointer[GROUND_MAX_OBJECTS];

  u_long          *Object_Pointer[GROUND_MAX_OBJECTS];
  } Track_Header0;
Track_Header0     TrackData;                
Track_Header0     Track1Data;                          
Track_Header0     Track2Data;                          
Track_Header0     Track3Data;                          
Track_Header0     Track4Data;                          
Track_Header0     Track5Data;                          

Tack array:

char RawGroundArray[GROUND_MAXX][GROUND_MAXZ] ={
{'6','1','1','1','1','1','2','0','0','0','0','0','0','6','2'},
{'3','0','0','0','0','0','5','1','2','0','0','6','1','4','3'},
{'3','0','0','0','0','0','0','0','3','0','0','3','0','0','3'},
{'3','0','0','0','6','1','1','1','4','0','0','3','0','0','3'},
{'3','0','0','0','3','0','0','0','0','0','0','3','0','0','3'},
{'5','1','2','0','5','1','1','1','1','1','1','4','0','0','3'},
{'0','0','3','0','0','0','0','0','0','0','0','0','0','0','3'},
{'0','0','3','0','0','6','1','1','1','1','1','1','1','1','4'},
{'0','6','4','0','0','3','0','0','0','0','0','0','0','0','0'},
{'0','3','0','0','6','4','0','0','0','0','0','0','0','0','0'},
{'6','4','0','0','3','0','0','0','0','0','0','0','0','0','0'},
{'3','0','0','0','5','1','1','1','1','1','1','1','1','1','2'},
{'3','0','0','0','0','0','0','0','0','0','0','0','0','0','3'},
{'3','0','0','0','0','0','0','0','0','0','0','0','0','0','3'},
{'5','1','1','1','1','1','1','1','1','1','1','1','1','1','4'}};

Can anyone please put some examples for collision detection using the
information provided.

If anymore info is needed that's no problem.

Sorry for the trouble.

Tanvir Khan
EMAG DESIGN

2bad@lineone.net