cv9

cv9/snake.c

@@ -0,0 +1,54 @@
+#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->next != 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;
+}