hadik

a2/snake.c

@@ -0,0 +1,62 @@
+#include "snake.h"
+#include <stdlib.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 || snake->next == NULL) {
+        return NULL;
+    }
+
+    struct snake* predtym = NULL;
+    struct snake* teraz = snake;
+    while (teraz->next != NULL) {
+        predtym = teraz;
+        teraz = teraz->next;
+    }
+
+    free(teraz);
+    predtym->next = NULL;
+
+    return snake;
+}
+
+void free_snake(struct snake* sn){
+    if (sn == NULL) {
+        return;
+    }
+    free_snake(sn->next);
+    free(sn);
+}
+
+int is_snake(struct snake* snake,int x,int y){
+    if(snake == NULL){
+        return NULL;
+    }
+
+    struct snake* pozicia = snake;
+
+    while(pozicia != NULL){
+        if(pozicia->x == x && pozicia->y == y){
+            return 1;
+        }
+        pozicia = pozicia->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;
+}