55 lines
966 B
C
55 lines
966 B
C
#include "snake.h"
|
|
#include <stdlib.h>
|
|
|
|
struct snake* add_snake(struct snake* snake,int x,int y){
|
|
struct snake* head = calloc(1,sizeof(struct snake));
|
|
head->x = x;
|
|
head->y = y;
|
|
head->next = snake;
|
|
return head;
|
|
}
|
|
struct snake* remove_snake(struct snake* snake){
|
|
|
|
if(snake == NULL){
|
|
return NULL;
|
|
}
|
|
if(snake->next == NULL){
|
|
free(snake);
|
|
return NULL;
|
|
}
|
|
struct snake* prev = NULL;
|
|
|
|
|
|
for(struct snake* current = snake; current->next != NULL; current = current->next){
|
|
prev = current;
|
|
}
|
|
|
|
free(prev->next);
|
|
|
|
prev->next = NULL;
|
|
|
|
return snake;
|
|
|
|
}
|
|
|
|
void free_snake(struct snake* sn){
|
|
}
|
|
|
|
int is_snake(struct snake* snake,int x,int y){
|
|
struct snake* this = snake;
|
|
while (this != NULL){
|
|
|
|
if(this->x == x && this->y == y){
|
|
return 1;
|
|
}
|
|
this = this->next;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
int step_state(struct state* st){
|
|
int nx = (st->snake->x + st->sx);
|
|
int ny = (st->snake->y + st->sy);
|
|
return END_CONTINUE;
|
|
}
|