bug fix: food does not spawns the snake body anymore

Author: Angel Jumbo

README.md

@@ -3,13 +3,14 @@ The classic snake game for the terminal that can plays itself and be use like a
 [![asciicast](https://asciinema.org/a/477685.svg)](https://asciinema.org/a/477685)
 ## Installation
 
-(RN its only for linux) 
 
 ```
 make
 make install
 ```
 
+ncurses is required.
+
 ## Usage
 
 By default it will run like a normal snake game that you can control with wasd, hjkl(vi keys) or the arrow keys.
@@ -26,10 +27,7 @@ sssnake -S -s 15 -j 5
 ```
 press Q to quit. 
 Use the -h options to see the option details.
-
-## Known bugs
-
-  - Sometimes the food spawns in the snake body. 
+ 
 
 ## Contributing
 

main.c

@@ -61,7 +61,7 @@ int main(int argc, char *argv[]) {
 
   do { // This loop goes forever if the option "screensaver" is given.
 
-    // Used to know where the body of the snake and junk are,
+    // Used to know where the body of the snake and the junk are,
     // blocksTaken is just a matrix of 2x2 but It can change its dimesions
     // dinamically if I ever decide to change  them by detecting changes in the
     // dimensions of the terminal.
@@ -157,6 +157,14 @@ int main(int argc, char *argv[]) {
           direction = get_direction(c);
         update_position(snake, blocksTaken, &food, direction, maxX, maxY);
       }
+      // xymap_print_log(blocksTaken, snake->head->x, snake->head->y,
+      //                snake->tail->x, snake->tail->y);
+
+      // FILE *fp;
+      // fp = fopen("log.txt", "a+");
+
+      // fprintf(fp, "Food (%i,%i) \n", food.x, food.y);
+      // fclose(fp);
 
       if (snake->head->x == food.x && snake->head->y == food.y)
         rand_pos_food(&food, blocksTaken, maxX, maxY);

snake.c

@@ -44,7 +44,6 @@ static void move_body(Snake *snake, XYMap *blocksTaken, Point *food, int prevx,
                       int prevy, int maxX, int maxY) {
   int prevx2, prevy2;
 
-  xymap_mark(blocksTaken, snake->head->x, snake->head->y, SBODY);
   // xymap_unmark(blocksTaken, snake->tail->x, snake->tail->y);
 
   SnakePart *snakePart = snake->head->next;
@@ -74,8 +73,10 @@ static void move_body(Snake *snake, XYMap *blocksTaken, Point *food, int prevx,
     // xymap_mark(blocksTaken, snake->tail->x, snake->tail->y, SBODY);
     // rand_pos_food(food, blocksTaken, maxX, maxY);
   } else {
+    // only unmark if the head haven't take the place of the tail
     xymap_unmark(blocksTaken, prevx, prevy);
   }
+  xymap_mark(blocksTaken, snake->head->x, snake->head->y, SBODY);
 }
 
 void update_position(Snake *snake, XYMap *blocksTaken, Point *food, int dir,

xymap.c

@@ -51,3 +51,39 @@ void xymap_print(XYMap *map) {
     printf("\n");
   }
 }
+
+void xymap_print_log(XYMap *map, int headx, int heady, int tailx, int taily) {
+  FILE *fp;
+
+  fp = fopen("log.txt", "a+");
+  fprintf(fp, "   ");
+  for (int i = 0; i < map->maxX; i++)
+    fprintf(fp, "%i ", i);
+
+  fprintf(fp, "\n");
+  for (int i = 0; i < map->maxX; i++)
+    fprintf(fp, "--");
+  fprintf(fp, "\n");
+  for (int j = 0; j < map->maxY; j++) {
+
+    fprintf(fp, "%i| ", j);
+    for (int i = 0; i < map->maxX; i++) {
+      if (map->arr[i + map->maxX * j] != 0) {
+        if (i == headx && j == heady) {
+          fprintf(fp, "h ");
+        } else if (i == tailx && j == taily) {
+          fprintf(fp, "t ");
+        } else {
+          fprintf(fp, "O ");
+        }
+      } else {
+        fprintf(fp, "  ");
+      }
+      // fprintf(fp, "%i ", map->arr[i + map->maxX * j]);
+    }
+    fprintf(fp, "\n");
+  }
+
+  fprintf(fp, "\n");
+  fclose(fp);
+}

xymap.h

@@ -22,5 +22,6 @@ void xymap_unmark(XYMap *map, int x, int y);
 int xymap_marked(XYMap *map, int x, int y);
 void xymap_print(XYMap *map);
 
+void xymap_print_log(XYMap *map, int headx, int heady, int tailx, int taily);
 XYMap *xymap_copy(XYMap *map);
 #endif