I’ve checked everywhere in my code and I could not find the reason why my program freezes every time I load it. The problem started happening after I included a new AI header, “schoolboy.h”. I checked to make sure that attempting to blit an image wasn’t the problem, and it wasn’t. So, after some testing, I figured that the problem lied in “void schoolboy_action()” within “schoolboy.h”. Here is the entire project’s code. I spent an hour looking at that section and could not find a solution. I know that the is really long, and that there are some holes in it that I plan on filling, but please bear with me.
Main.cpp
#include "schoolboy.h"
#include "include_file.h"
int main(int argc,char* argv[])
{
SDL_Init(SDL_INIT_EVERYTHING);
variables();
while (quit == 1)
{
while (MARS.alive == 1)
{
SDL_WM_SetCaption("Mobile Anihilation Robot System", NULL);
applysurface(0,0,background,screen);
MARS_action();
MARS_bullet_action(1);
gunshot_explosion_action(1);
if (create_schoolboy_variable == 1)
{create_schoolboy(); create_schoolboy_variable = 0;}
else if (create_schoolboy_variable < 1)
{create_schoolboy_variable = rand() % 1;};
schoolboy_action(0,0,0);
applysurface(MARS.x-25, MARS.y-25, MARS_image, screen);
SDL_Flip(screen);
SDL_Delay(1);
};
while (MARS.alive == 0)
{
SDL_WM_SetCaption("Mobil Anihilation Robot System", NULL);
};
};
SDL_FreeSurface(screen);
SDL_Quit();
return 0;
};
include_file.h
#ifndef INCLUDE_FILE_H_INCLUDED
#define INCLUDE_FILE_H_INCLUDED
#include <map>
#include <cstdlib>
#include <SDL/SDL.h>
#include <SDL/SDL_image.h>
/*structs*/
struct instance_struct
{
int gunshot_explosion;
int schoolboy_instance;
};
struct MARS_struct
{
int x;
int y;
int alive;
int bullet;
};
struct MARS_bullet_struct
{
int x;
int y;
int direction;
int exist;
int id;
bool operator<(const MARS_bullet_struct & n)const{return this->id<n.id;}
};
struct schoolboy_struct
{
int x;
int y;
int direction;
int id;
int exist;
int walk_delay;
int shoot_delay;
int walked;
SDL_Rect clip[3];
bool operator<(const schoolboy_struct&n)const{return this->id<n.id;}
};
struct gunshot_explosion_struct
{
int x;
int y;
int id;
int life;
int exist;
bool operator<(const gunshot_explosion_struct&n)const{return this->id<n.id;}
};
/*declaring structs*/
MARS_struct MARS;
instance_struct instance_body;
std::map<int, MARS_bullet_struct>MARS_bullet;
std::map<int, schoolboy_struct>schoolboy;
std::map<int, gunshot_explosion_struct>gunshot_explosion;
/*applysurface*/
void applysurface(int x, int y, SDL_Surface *source, SDL_Surface *destination, SDL_Rect* clip = NULL)
{
SDL_Rect offset;
offset.x = x;
offset.y = y;
SDL_BlitSurface(source,clip,destination,&offset);
};
/*declaring global variables*/
int quit;
int create_schoolboy_variable;
SDL_Event event;
SDL_Rect clip[3];
SDL_Surface *screen = NULL;
SDL_Surface *background = NULL;
SDL_Surface *gunshot_explosion_image = NULL;
SDL_Surface *MARS_image = NULL;
SDL_Surface *MARS_bullet_image = NULL;
SDL_Surface *schoolboy_image = NULL;
/*giving variables values*/
void variables()
{
quit = 1;
MARS.alive = 1;
MARS.x = 256;
MARS.y = 256;
create_schoolboy_variable = 0;
clip[0].x = 0;
clip[0].y = 0;
clip[0].w = 50;
clip[0].h = 50;
clip[1].x = 50;
clip[1].y = 50;
clip[1].w = 100;
clip[1].h = 100;
clip[2].x = 100;
clip[2].y = 100;
clip[2].w = 150;
clip[2].h = 150;
clip[3].x = 150;
clip[3].y = 150;
clip[3].w = 200;
clip[3].h = 200;
screen = SDL_SetVideoMode(512,512,32,SDL_SWSURFACE);
background = IMG_Load("images/background.png");
gunshot_explosion_image = IMG_Load("images/gunshot_explosion.png");
MARS_image = IMG_Load("images/MARS.png");
MARS_bullet_image = IMG_Load("images/MARS_bullet.png");
schoolboy_image = IMG_Load("images/schoolboy.png");
};
void gunshot_explosion_action(int instance)
{
while (instance <= instance_body.gunshot_explosion)
{
if (gunshot_explosion[instance].exist == 0)
{
gunshot_explosion[instance].life = gunshot_explosion[instance].life + 1;
if (gunshot_explosion[instance].life > 7)
{gunshot_explosion[instance].exist = 1;};
applysurface(gunshot_explosion[instance].x-6,gunshot_explosion[instance].y-6,gunshot_explosion_image,screen);
};
instance = instance + 1;
};
};
#endif // INCLUDE_FILE_H_INCLUDED
MARS.h
#ifndef MARS_H_INCLUDED
#define MARS_H_INCLUDED
#include "include_file.h"
/*character functions*/
void MARS_action()
{
if (SDL_PollEvent(&event))
{
if (event.type == SDL_QUIT)
{
MARS.alive = 2;
quit = 0;
};
if (event.type == SDL_KEYDOWN)
{
switch(event.key.keysym.sym)
{
case SDLK_a:
if(MARS.x > 0){MARS.x = MARS.x - 16;}; break;
case SDLK_d:
if(MARS.x < 512){MARS.x = MARS.x + 16;}; break;
case SDLK_w:
if(MARS.y > 0){MARS.y = MARS.y - 16;}; break;
case SDLK_s:
if(MARS.y < 512){MARS.y = MARS.y + 16;}; break;
case SDLK_LEFT:
MARS.bullet = MARS.bullet + 1;
MARS_bullet[MARS.bullet].direction = 2;
MARS_bullet[MARS.bullet].x = MARS.x-25;
MARS_bullet[MARS.bullet].y = MARS.y;
instance_body.gunshot_explosion = instance_body.gunshot_explosion+1;
gunshot_explosion[instance_body.gunshot_explosion].x = MARS.x-25;
gunshot_explosion[instance_body.gunshot_explosion].y = MARS.y;
break;
case SDLK_RIGHT:
MARS.bullet = MARS.bullet + 1;
MARS_bullet[MARS.bullet].direction = 0;
MARS_bullet[MARS.bullet].x = MARS.x+25;
MARS_bullet[MARS.bullet].y = MARS.y;
instance_body.gunshot_explosion = instance_body.gunshot_explosion+1;
gunshot_explosion[instance_body.gunshot_explosion].x = MARS.x+25;
gunshot_explosion[instance_body.gunshot_explosion].y = MARS.y;
break;
case SDLK_UP:
MARS.bullet = MARS.bullet + 1;
MARS_bullet[MARS.bullet].direction = 1;
MARS_bullet[MARS.bullet].x = MARS.x;
MARS_bullet[MARS.bullet].y = MARS.y-25;
instance_body.gunshot_explosion = instance_body.gunshot_explosion+1;
gunshot_explosion[instance_body.gunshot_explosion].x = MARS.x;
gunshot_explosion[instance_body.gunshot_explosion].y = MARS.y-25;
break;
case SDLK_DOWN:
MARS.bullet = MARS.bullet + 1;
MARS_bullet[MARS.bullet].direction = 3;
MARS_bullet[MARS.bullet].x = MARS.x;
MARS_bullet[MARS.bullet].y = MARS.y+25;
instance_body.gunshot_explosion = instance_body.gunshot_explosion+1;
gunshot_explosion[instance_body.gunshot_explosion].x = MARS.x;
gunshot_explosion[instance_body.gunshot_explosion].y = MARS.y+25;
break;
case SDLK_ESCAPE: quit = 0; MARS.alive = 2; break;
};
};
};
};
void MARS_bullet_action(int instance)
{
while (instance <= MARS.bullet)
{
if (MARS_bullet[instance].exist == 0)
{
if (MARS_bullet[instance].direction == 0)
{MARS_bullet[instance].x = MARS_bullet[instance].x + 5;};
if (MARS_bullet[instance].direction == 1)
{MARS_bullet[instance].y = MARS_bullet[instance].y - 5;};
if (MARS_bullet[instance].direction == 2)
{MARS_bullet[instance].x = MARS_bullet[instance].x - 5;};
if (MARS_bullet[instance].direction == 3)
{MARS_bullet[instance].y = MARS_bullet[instance].y + 5;};
if (MARS_bullet[instance].x < 0 or MARS_bullet[instance].x > 512 or MARS_bullet[instance].y < 0 or MARS_bullet[instance].y > 512)
{MARS_bullet[instance].exist = 1;};
applysurface(MARS_bullet[instance].x-5, MARS_bullet[instance].y-5, MARS_bullet_image, screen);
};
instance = instance + 1;
};
};
#endif // MARS_H_INCLUDED
schoolboy.h
#ifndef SCHOOLBOY_H_INCLUDED
#define SCHOOLBOY_H_INCLUDED
#include "include_file.h"
void create_schoolboy(int positionx = 0, int positiony = 0)
{
instance_body.schoolboy_instance = instance_body.schoolboy_instance + 1;
positionx = rand() % 1;
positiony = rand() % 1;
if (positionx == 0 and positiony == 0)
{
schoolboy[instance_body.schoolboy_instance].x = 0;
schoolboy[instance_body.schoolboy_instance].y = 0;
};
if (positionx == 1 and positiony == 0)
{
schoolboy[instance_body.schoolboy_instance].x = 512;
schoolboy[instance_body.schoolboy_instance].y = 0;
};
if (positionx == 0 and positiony == 1)
{
schoolboy[instance_body.schoolboy_instance].x = 0;
schoolboy[instance_body.schoolboy_instance].y = 512;
};
if (positionx == 1 and positiony == 1)
{
schoolboy[instance_body.schoolboy_instance].x = 512;
schoolboy[instance_body.schoolboy_instance].y = 512;
};
};
void schoolboy_action(int instance, int bullet, int first_direction)
{
while (instance <= instance_body.schoolboy_instance)
{
first_direction = rand() % 1;
if (schoolboy[instance].exist == 0)
{
while (bullet <= MARS.bullet)
{
if (schoolboy[instance].x-12 >= MARS_bullet[bullet].x and MARS_bullet[bullet].x <= schoolboy[instance].x+12 and schoolboy[instance].y-12 >= MARS_bullet[bullet].y and MARS_bullet[bullet].y <= schoolboy[instance].y+12)
{
schoolboy[instance].exist = 1;
};
bullet = bullet + 1;
};
if (schoolboy[instance].walk_delay == 0)
{
if (first_direction == 0)
{
schoolboy[instance].walked = 0;
if (MARS.x > schoolboy[instance].x)
{
schoolboy[instance].x = schoolboy[instance].x + 16;
applysurface(schoolboy[instance].x-25, schoolboy[instance].y-25, schoolboy_image, screen, &clip[0]);
schoolboy[instance].walked = 1;
}
else if (MARS.x < schoolboy[instance].x)
{
schoolboy[instance].x = schoolboy[instance].x - 16;
applysurface(schoolboy[instance].x-25, schoolboy[instance].y-25, schoolboy_image, screen, &clip[2]);
schoolboy[instance].walked = 1;
};
if (schoolboy[instance].walked = 0)
{
if (MARS.y > schoolboy[instance].y)
{
schoolboy[instance].y = schoolboy[instance].y+16;
applysurface(schoolboy[instance].x-25, schoolboy[instance].y-25, schoolboy_image, screen, &clip[3]);
schoolboy[instance].walked = 1;
}
else if (MARS.y < schoolboy[instance].y)
{
schoolboy[instance].y = schoolboy[instance].y+16;
applysurface(schoolboy[instance].x-25, schoolboy[instance].y-25, schoolboy_image, screen, &clip[1]);
schoolboy[instance].walked = 1;
};
};
};
if (first_direction == 1)
{
schoolboy[instance].walked = 0;
if (MARS.y > schoolboy[instance].y)
{
schoolboy[instance].y = schoolboy[instance].y+16;
applysurface(schoolboy[instance].x-25, schoolboy[instance].y-25, schoolboy_image, screen, &clip[3]);
schoolboy[instance].walked = 1;
}
else if (MARS.y < schoolboy[instance].y)
{
schoolboy[instance].y = schoolboy[instance].y+16;
applysurface(schoolboy[instance].x-25, schoolboy[instance].y-25, schoolboy_image, screen, &clip[1]);
schoolboy[instance].walked = 1;
};
if (schoolboy[instance].walked = 0)
{
if (MARS.x > schoolboy[instance].x)
{
schoolboy[instance].x = schoolboy[instance].x + 16;
applysurface(schoolboy[instance].x-25, schoolboy[instance].y-25, schoolboy_image, screen, &clip[0]);
schoolboy[instance].walked = 1;
}
else if (MARS.x < schoolboy[instance].x)
{
schoolboy[instance].x = schoolboy[instance].x - 16;
applysurface(schoolboy[instance].x-25, schoolboy[instance].y-25, schoolboy_image, screen, &clip[2]);
schoolboy[instance].walked = 1;
};
};
};
schoolboy[instance].walk_delay = schoolboy[instance].walk_delay + 1;
}
else {schoolboy[instance].walk_delay = schoolboy[instance].walk_delay + 1;};
if (schoolboy[instance].walk_delay == 10){schoolboy[instance].walk_delay = 0;};
};
};
instance = instance + 1;
};
#endif // SCHOOLBOY_H_INCLUDED
All of my files are involved with each other, especially schoolboy.h, which is why I put them down. If you find the answer, can you explain why that’s so. Any help appreciated!
Your instance = instance + 1 line at the end of schoolboy.h looks like it’s outside the while loop that relies on it being incremented to eventually end.