From 52d7eeffe381cd57d4015a9eed587cf4e9f0e7f7 Mon Sep 17 00:00:00 2001
From: Miloslav Macko <miloslav.macko@student.tuke.sk>
Date: Wed, 10 Apr 2024 23:35:50 +0200
Subject: [PATCH] 111111

---
 cv9/snake.c | 34 +++++++++-------------------------
 1 file changed, 9 insertions(+), 25 deletions(-)

diff --git a/cv9/snake.c b/cv9/snake.c
index dd1e357..8970804 100644
--- a/cv9/snake.c
+++ b/cv9/snake.c
@@ -1,6 +1,7 @@
 #include "snake.h"
 #include <stdlib.h>
 
+// Pridá novú časť hada na danú pozíciu a vráti novú hlavu hada
 struct snake* add_snake(struct snake* snake, int x, int y) {
     struct snake* new_head = (struct snake*) malloc(sizeof(struct snake));
     new_head->x = x;
@@ -9,29 +10,7 @@ struct snake* add_snake(struct snake* snake, int x, int y) {
     return new_head;
 }
 
-/*struct snake* remove_snake(struct snake* snake) {
-    struct snake* temp = snake;
-    while(temp->next->next != NULL) {
-        temp = temp->next;
-    }
-    free(temp->next);
-    temp->next = NULL;
-    return snake;
-}*/
-
-/*struct snake* remove_snake(struct snake* snake) {
-    if (snake == NULL) {
-        return NULL;
-    }
-    struct snake* temp = snake;
-    while(temp->next->next != NULL) {
-        temp = temp->next;
-    }
-    free(temp->next);
-    temp->next = NULL;
-    return snake;
-}*/
-
+// Odstráni poslednú časť hada a vráti novú hlavu hada
 struct snake* remove_snake(struct snake* snake) {
     if (snake == NULL || snake->next == NULL) {
         return NULL;
@@ -45,8 +24,7 @@ struct snake* remove_snake(struct snake* snake) {
     return snake;
 }
 
-
-
+// Zistí, či sú dané súradnice súčasťou hada
 int is_snake(struct snake* snake, int x, int y) {
     while(snake != NULL) {
         if(snake->x == x && snake->y == y) {
@@ -57,6 +35,7 @@ int is_snake(struct snake* snake, int x, int y) {
     return 0;
 }
 
+// Uvoľní pamäť všetkých častí hada
 void free_snake(struct snake* snake) {
     struct snake* temp;
     while(snake != NULL) {
@@ -66,18 +45,22 @@ void free_snake(struct snake* snake) {
     }
 }
 
+// Zmení stav hry podľa pravidiel hry
 int step_state(struct state* state) {
     int new_x = state->snake->x + state->sx;
     int new_y = state->snake->y + state->sy;
 
+    // Ak je nová pozícia mimo hracej plochy, vráti END_WALL
     if(new_x < 0 || new_x >= state->width || new_y < 0 || new_y >= state->height) {
         return END_WALL;
     }
 
+    // Ak je nová pozícia na hadovi, vráti END_SNAKE
     if(is_snake(state->snake, new_x, new_y)) {
         return END_SNAKE;
     }
 
+    // Ak je nová pozícia na jedle, označí jedlo ako zjedené a pridá novú časť hada
     for(int i = 0; i < FOOD_COUNT; i++) {
         if(state->foodx[i] == new_x && state->foody[i] == new_y) {
             state->foodx[i] = -1;
@@ -92,6 +75,7 @@ int step_state(struct state* state) {
         }
     }
 
+    // Ak je nová pozícia voľná, pridá novú časť hada a odstráni poslednú časť
     state->snake = add_snake(state->snake, new_x, new_y);
     state->snake = remove_snake(state->snake);