[AL] rotate_problem()

[<per...@eb...>]

Ok, here's the code:

#include <stdlib.h>
#include <stdio.h>
#include <dir.h>
#include <pc.h>
#include <math.h>
#include "komet.h"
#include "allegro.h"
/*******************************************************************/
#define  BACK_GROUND       0
#define SHIP_PAL  1
#define SHIP_FRAME  2
BITMAP *buffer;
BITMAP *player;
DATAFILE *komet_datafile;
double radian_angle;
#define SHIP_WIDTH         24
#define SHIP_HEIGHT    28
#define SHIP_THRUST_SPEED   2
#define SHIP_ACCEL_SPEED    1
#define SHIP_ROTATE_SPEED   2=20
int  SCREEN_WIDTH =3D 640;
int  SCREEN_HEIGHT =3D 480;
struct ship {
   int dead;
   int width, height;
   float x, y;
   int   state;
   int   frame;
   float vel_x, vel_y;
   int   angle;
};
struct ship Sh;
volatile int frame_count, fps;
volatile int game_time;
void game_timer()
{
   game_time++;
}
END_OF_FUNCTION(game_timer);
void fps_proc()
{
   fps =3D frame_count;
   frame_count =3D 0;
}
END_OF_FUNCTION(fps_proc);
void init_program (void);
void menu (void);
void game_loop (void);
void shut_down (void);
void init_game (void);
void get_input (void);
void update_screen (void);
void Dump_Screen(void);
/*******************************************************************/
int main ()
{
 init_program();
 menu();
 shut_down();
}
/*******************************************************************/
void init_program ()
{
 allegro_init();
 install_timer();
 install_keyboard();
 install_sound(DIGI_AUTODETECT, MIDI_AUTODETECT, NULL);
 komet_datafile =3D load_datafile("Komet.dat");
 set_gfx_mode(GFX_AUTODETECT, SCREEN_WIDTH, SCREEN_HEIGHT,0,0);
 set_pallete(komet_datafile[SHIP_PAL].dat);
 buffer =3D create_bitmap(SCREEN_WIDTH, SCREEN_HEIGHT);
 clear(buffer);
 LOCK_VARIABLE(game_time);
    LOCK_FUNCTION(game_timer);  //line 100
    LOCK_VARIABLE(frame_count);
    LOCK_VARIABLE(fps);
    LOCK_FUNCTION(fps_proc);
 install_int(fps_proc, 1000);
 install_int(game_timer, 6400/SCREEN_WIDTH);
}
/*******************************************************************/
void menu ()
{
 game_loop();
}
/*******************************************************************/
void game_loop ()
{
 init_game();
    while (!Sh.dead) {
       while (game_time > 0)=20
  {
    get_input();
    game_time--;
       }
       update_screen();
       frame_count++;
       if (key[KEY_ESC]) Sh.dead =3D TRUE;
    }
}
/*******************************************************************/
void shut_down ()
{
 unload_datafile(komet_datafile);
 destroy_bitmap(buffer);
 printf("Kometoids by Per Arvidsson. \n\nHttp://user.tninet.se/~owr636o =
\npe...@eb...");=09
 allegro_exit();
 exit(0);
}
/*******************************************************************/
void init_game ()
{
 Sh.dead =3D FALSE;
 Sh.width =3D 24;
 Sh.height =3D 28;
 Sh.x =3D (SCREEN_WIDTH / 2) - (SHIP_WIDTH/2);
      Sh.y =3D (SCREEN_HEIGHT / 2) - (SHIP_HEIGHT/2);
   Sh.vel_x =3D (rand() % 10) * .01;
   Sh.vel_y =3D (rand() % 10) * .01;
   if ((rand() % 100) > 50) Sh.vel_x *=3D -1;
   if ((rand() % 100) > 50) Sh.vel_y *=3D -1;
   Sh.angle =3D(rand() % 256);
}
/*******************************************************************/
void get_input ()
{
 if (key[KEY_UP])
  {
  radian_angle =3D ((1.40625 * Sh.angle) * -1) + 450;
  radian_angle *=3D 0.017453277;
  Sh.vel_x +=3D cos(radian_angle) * SHIP_ACCEL_SPEED * .05;
  Sh.vel_y -=3D sin(radian_angle) * SHIP_ACCEL_SPEED * .05;
  if (Sh.vel_x > SHIP_THRUST_SPEED) Sh.vel_x =3D SHIP_THRUST_SPEED;
  if (Sh.vel_y > SHIP_THRUST_SPEED) Sh.vel_y =3D SHIP_THRUST_SPEED;
  if (Sh.vel_x < (-1 * SHIP_THRUST_SPEED)) Sh.vel_x =3D -1 * =
SHIP_THRUST_SPEED;
  if (Sh.vel_y < (-1 * SHIP_THRUST_SPEED)) Sh.vel_y =3D -1 * =
SHIP_THRUST_SPEED;

  }
=09
      if (key[KEY_LEFT])
  {
  Sh.angle -=3D SHIP_ROTATE_SPEED;
  if (Sh.angle < 0) Sh.angle +=3D 256;
  }
      if (key[KEY_RIGHT])
  {
  Sh.angle +=3D SHIP_ROTATE_SPEED;
  if (Sh.angle > 256) Sh.angle -=3D 256;
  }
 if (key[KEY_D]) Dump_Screen();
}
/*******************************************************************/
void update_screen ()
{
   clear(player);
   rotate_sprite (player, komet_datafile[SHIP_FRAME].dat, 0, 0,itofix =
(Sh.angle));
   draw_sprite (buffer, player, Sh.x, Sh.y);
   Sh.x +=3D Sh.vel_x;
   Sh.y +=3D Sh.vel_y;
   if (Sh.x > SCREEN_WIDTH)
      {
      Sh.x =3D -SHIP_WIDTH;
      }
   else
      {
      if (Sh.x < -SHIP_WIDTH)
         {
         Sh.x =3D SCREEN_WIDTH;
         }
      }
   if (Sh.y > SCREEN_HEIGHT)
      {
      Sh.y =3D -SHIP_HEIGHT;
      }
   else
      {
      if (Sh.y < -SHIP_HEIGHT)
         {
         Sh.y =3D SCREEN_HEIGHT;
         }
      }
 vsync();
 blit (buffer, screen, 0, 0, 0, 0, SCREEN_WIDTH, SCREEN_HEIGHT);
 clear(buffer);
}
/*******************************************************************/
void Dump_Screen()
{
   save_bitmap("dump.bmp", screen, komet_datafile[SHIP_PAL].dat);
}

And here's the symified output:

Shutting down Allegro
Exiting due to signal SIGSEGV
General Protection Fault at eip=3D0000cb7e
eax=3D00000000 ebx=3D000af100 ecx=3D005d5692 edx=3Dca8941ee =
esi=3D00000054 edi=3D0006e55c
ebp=3D000ae518 esp=3D000ae4f8 =
program=3DC:\WINDOWS\SKRIVB~1\KOMETOID\KOMET.EXE
cs: sel=3D00af  base=3D82f20000  limit=3D005c0fff
ds: sel=3D00b7  base=3D82f20000  limit=3D005c0fff
es: sel=3D00b7  base=3D82f20000  limit=3D005c0fff
fs: sel=3D00c7  base=3D00000000  limit=3Dffffffff
gs: sel=3D00c7  base=3D00000000  limit=3Dffffffff
ss: sel=3D00b7  base=3D82f20000  limit=3D005c0fff
Call frame traceback EIPs:
  0x0000cb7e   _clear+10
  0x0000173d   _game_loop+61, line 126 of komet.c
  0x000016fc   _menu+8, line 109 of komet.c
  0x000015c5   _main+13, line 72 of komet.c
  0x0003d8f2   ___crt1_startup+138


Hope some of you guys can fix it! I really need som help!
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Per Arvidsson
E-mail: per...@eb...
Web: http://user.tninet.se/~owr636o or http://fly.to/pelle84
ICQ: 13651133
Current Project: Kometoids!
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