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Aktualizovat du4 /snake.c

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This commit is contained in:
Tomáš Vlček 2026-04-15 21:18:07 +00:00
parent 277b9bcd6a
commit 938023efab
1 changed files with 27 additions and 2 deletions
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29
du4 /snake.c
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@ -16,7 +16,31 @@ struct snake* add_snake(struct snake* snake,int x,int y)
}
struct snake* remove_snake(struct snake* snake){
return NULL;
struct snake* currentPtr = snake;
struct snake* prevPtr;
if (snake == NULL)
{
return NULL;
}
while (1)
{
//pomocny pointer -> ulozenie predoslej casti/node-u
prevPtr = currentPtr;
//skontroluje, ze ci dalsia cast je PRAZDNA.
if (currentPtr->next == NULL)
{
//uprava listu -> odlinkje tuto cast (tak aby prevPtr->next NEFERENCOVAL na uz uvolnenu cast)
prevPtr->next = NULL;
//uvolni pamat pre akt. cast (uvolni pamat)
free(currentPtr);
break;
}
//iteruj ku dalsiej casti (node)
currentPtr = currentPtr->next;
}
return snake;
}
void free_snake(struct snake* sn)
@ -25,7 +49,7 @@ void free_snake(struct snake* sn)
struct snake* currentPtr = sn;
while (currentPtr != NULL)
{
//uloz dalsiu cast
//uloz dalsiu cast, zmaz aktualnu a posun sa na dalsiu
struct snake* nextPtr = currentPtr->next;
free(currentPtr);
currentPtr = nextPtr;
@ -37,6 +61,7 @@ int is_snake(struct snake* snake,int x,int y){
//helper pointer/smernikova premena
struct snake* currentPtr = snake;
//iteracia cez vsetky casti az dokial nenajdeme cast/node s rovnakymi suradnicami
while (currentPtr != NULL)
{
if (currentPtr->x == x && currentPtr->y == y)