Приложение либо зависает, либо makefood() делает координаты, равные одной из частей snakeparts[], чего не должно быть, проверка, вроде бы, не должна глючить. Одно из возможных мест зависаний - строка 170 driver.cpp. А может быть ошибка, если таймер запускает функцию, выполняемую в данный момент(на большей скорости чаще виснет).
Вот ссылка на приложение: http://www.green-lord.hotbox.ru/powersnake-0.9pre1try2.tar.bz2
driver.cpp:
| Код |
#include<iostream>
#include"snake.h"
#include<vector>
#include<cstdlib>
#include<time.h>//for srand
SDL_TimerID move_timer_id;
SDL_TimerID clock_timer_id;
void* move_callback_param;
void* clock_callback_param;
Uint32 move(Uint32 interval, void *param); //is called by SDL timer
Uint32 clock(Uint32 clock_interval, void *clock_param);
int one_second = 1000;
void check_for_reverce();
void gameover();
const int width = 50; //width of the each segment of the snake
std::vector<Snake>snakeparts(3); /* {first...lost} */
int lost = 2;
Point food;
bool stop_move = false;
int speed = 100;
int scores = 0;
int screen_width = 800;
int screen_high = 600;
int main(int argc, char *argv[]){
snakeparts[0] = Snake(150, 0, 1, 0,0);
snakeparts[1] = Snake(100,0,1,0,0);
snakeparts[2] = Snake(50,0, 1, 0,0);
initsystem(); //inits sdl, draws background,starts sound,opens ttf
SDL_TimerID move_timer_id = SDL_AddTimer(speed, move, move_callback_param);
SDL_TimerID clock_timer_id= SDL_AddTimer(one_second,clock,clock_callback_param);
for(;;);
SDL_RemoveTimer(move_timer_id);
Mix_CloseAudio();
return 0;
}
void randomize_food(unsigned int num_of_tries=1){
long int seconds;
while( (seconds=clock() ) == 0 || (seconds=clock() ) == 1); //to increase bad randomize
srand(seconds*num_of_tries);
food.xpos = width*(rand()%(screen_width-150)/width);
food.ypos = width*(rand()%screen_high/width);
}
void makefood(){
stop_move=false;
DrawPart(&snakeparts[lost]);
randomize_food();
int num_of_bad_randoms = 1;
for(int i=0;i<=lost;i++)
if(food.xpos==snakeparts[i].xpos && food.ypos == snakeparts[i].ypos){
i=-1;
randomize_food(num_of_bad_randoms++);
}
Draw_food(food.xpos,food.ypos);
stop_move=false;
}
void make_sound();
int check_for_food(){
if(snakeparts[0].xpos==food.xpos && snakeparts[0].ypos==food.ypos){
snakeparts.resize(snakeparts.size() + 1);
snakeparts[lost+1] = snakeparts[lost];
lost++;
make_sound();
scores +=10;
print_ttf();
return 1;
}
else return 0;
}
int game_stop = 0;
Uint32 move(Uint32 interval, void *param) {
while(stop_move); //whaiting while makefood is working
SDL_Event event;
if(SDL_PollEvent(&event) != 0)
switch(event.type){
case SDL_QUIT:{
gameover();
break;}
case SDL_KEYDOWN:{
if ( event.key.keysym.sym == SDLK_ESCAPE ){
gameover();
}
else switch(event.key.keysym.sym) {
case SDLK_SPACE:{
SDL_Delay(20000);
break;
}
case SDLK_UP:{
if(snakeparts[0].y_direct != 1){
snakeparts[0].y_direct = -1;
snakeparts[0].x_direct = 0;
}
break;}
case SDLK_DOWN:{
if(snakeparts[0].y_direct != -1){
snakeparts[0].y_direct = 1;
snakeparts[0].x_direct = 0;
}
break;}
case SDLK_LEFT:{
if(snakeparts[0].x_direct != 1){
snakeparts[0].x_direct = -1;
snakeparts[0].y_direct = 0;
}
break;}
case SDLK_RIGHT:{
if(snakeparts[0].x_direct != -1){
snakeparts[0].x_direct = 1;
snakeparts[0].y_direct = 0;
}
break;}
}
break;}
}
Snake tmp = snakeparts[0]; //back up old first cords to second part
snakeparts[0].xpos += snakeparts[0].x_direct*width;
snakeparts[0].ypos += snakeparts[0].y_direct*width;
if(snakeparts[0].xpos>=(screen_width-100)/*100-width of ttf panel*/ ||snakeparts[0].xpos<0 || snakeparts[0].ypos>screen_high-width || snakeparts[0].ypos<0)
gameover();
for(int i=1;i<=lost;i++)
if(snakeparts[0].xpos==snakeparts[i].xpos && snakeparts[0].ypos==snakeparts[i].ypos)
gameover();
DrawPart(&snakeparts[0]);
CleanPart(&snakeparts[lost]);
if(check_for_food() )
makefood();
//Lets give to all parts new cords(not for first & lost)
for(int i = lost;i>1;i--)
snakeparts[i] = snakeparts[i-1];
snakeparts[1] = tmp;
return speed;
}
void gameover()
{
std::cout<<"GAME OVER\nYour scores = " << scores<<"\n";
SDL_RemoveTimer(move_timer_id);
SDL_RemoveTimer(clock_timer_id);
CD_close();
Mix_CloseAudio();
TTF_Quit();
exit(0);
}
int m1=0;
int m2=0;
int s1=0;
int s2=0;
Uint32 clock(Uint32 clock_interval, void *clock_param){
s2++;
if(s2>9){
s2=0;
s1++;}
if(s1>=6){
s1=0;
m2++;}
if(m2>9){
m2=0;
m1++;}
print_time();
return one_second;
}
void make_sound()
{
if(Mix_OpenAudio(MIX_DEFAULT_FREQUENCY, MIX_DEFAULT_FORMAT, 2, 1024)==-1) {
printf("Mix_OpenAudio: %s\n", Mix_GetError());
exit(2);
}
Mix_Chunk *food_music = Mix_LoadWAV("sounds/food.wav");
if(!food_music)
printf("Mix_LoadWAV: %s\n", Mix_GetError());
if(Mix_VolumeChunk(food_music, MIX_MAX_VOLUME) == -1)
printf("Error while configuring volume:Mix_PlayChannel: %s\n",Mix_GetError());
if(Mix_PlayChannel(-1, food_music, 0)==-1)
printf("Mix_PlayChannel: %s\n",Mix_GetError());
}
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