pvjc24/cv9/snake.c

#include "snake.h"
#include <stdlib.h>
#include <assert.h>

struct snake* add_snake(struct snake* snake,int x,int y){
    struct snake* hlavicka = calloc(1,sizeof(struct snake));

    hlavicka->x = x;
    hlavicka->y = y;
    
    hlavicka->next = snake;
    
    return hlavicka;
}

struct snake* remove_snake(struct snake* snake){
     if (snake == NULL) {
        return NULL; 
    }


    struct snake* nova_hlavicka = snake->next;
    free(snake);


    if (nova_hlavicka == NULL || nova_hlavicka->next == NULL) {
        assert(nova_hlavicka == NULL || nova_hlavicka->next == NULL);
        return nova_hlavicka;
    }

  
    struct snake* chvost = nova_hlavicka;
    while (chvost->next != NULL) {
        chvost = chvost->next;
    }

    assert(chvost->next == NULL);

    return nova_hlavicka;
}

void free_snake(struct snake* sn){
}

int is_snake(struct snake* snake,int x,int y){
    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;
}