Added multi level support, dynamic snake location from level

game.c

@@ -27,11 +27,14 @@ int main(int argc, char *argv[])
 	size_t size_buf = 0;
 	int nbl, nbc, i;
 	int opt, option_index = 0;
-	int loop_count = 0, nb_fruit = 0;
+	int loop_count = 0, nb_fruit = 0, total_fruits = 0;
 	char *input_file = NULL;
 	int width = 640, height = 480;
 	MLV_Keyboard_button touche = MLV_KEYBOARD_NONE;
 	int initial_size = 0;
+	int current_level = 1;
+	int global_score = 0;
+	int previous_score = 0;
 
 	Grid *g;
 
@@ -40,17 +43,6 @@ int main(int argc, char *argv[])
 		{"input", required_argument, 0, 'i'},
 		{0, 0, 0, 0}};
 
-	Snake *snake = new_snake();
-	add_segment(snake, 1, 5);
-	add_segment(snake, 1, 4);
-	add_segment(snake, 1, 3);
-	add_segment(snake, 1, 2);
-	add_segment(snake, 1, 1);
-	add_segment(snake, 1, 0);
-	snake->dir = BOTTOM;
-
-	initial_size += snake->size;
-
 	while ((opt = getopt_long(argc, argv, "hi:", long_options, &option_index)) != -1)
 	{
 		switch (opt)
@@ -67,14 +59,25 @@ int main(int argc, char *argv[])
 		}
 	}
 
+	while (1)
+	{
+		Snake *snake = new_snake();
+
+		previous_score = global_score;
+
+		input_file = NULL;
+
 		if (input_file == NULL)
 		{
-		input_file = "levels/default";
+			char level_file[256];
+			snprintf(level_file, sizeof(level_file), "levels/level%d", current_level);
+			input_file = level_file;
 		}
+
 		stream = fopen(input_file, "r");
 		if (!stream)
 		{
-		fprintf(stderr, "Error: unable to open file\n");
+			fprintf(stderr, "Error: unable to open file for level %d\n", current_level);
 			exit(EXIT_FAILURE);
 		}
 
@@ -84,6 +87,8 @@ int main(int argc, char *argv[])
 		if (nbc == -1)
 		{
 			fprintf(stderr, "Error: malformed file\n");
+			free(buf);
+			fclose(stream);
 			exit(EXIT_FAILURE);
 		}
 		nbc--;
@@ -98,6 +103,7 @@ int main(int argc, char *argv[])
 			{
 				fprintf(stderr, "Error: inconsistent line length\n");
 				free(buf);
+				free_grid(g);
 				fclose(stream);
 				exit(EXIT_FAILURE);
 			}
@@ -106,10 +112,12 @@ int main(int argc, char *argv[])
 
 		rewind(stream);
 		nb_fruit = count_fruits(stream, g);
+		total_fruits = nb_fruit;
 		if (nb_fruit == 0)
 		{
 			fprintf(stderr, "Error: no fruits in the grid\n");
 			free(buf);
+			free_grid(g);
 			fclose(stream);
 			exit(EXIT_FAILURE);
 		}
@@ -117,14 +125,17 @@ int main(int argc, char *argv[])
 		{
 			fprintf(stderr, "Error: unable to count fruits\n");
 			free(buf);
+			free_grid(g);
 			fclose(stream);
 			exit(EXIT_FAILURE);
 		}
 
 		free(buf);
+		buf = NULL;
 		fclose(stream);
 
-	place_snake(g, snake);
+		read_snake_from_grid(g, snake);
+		initial_size = snake->size;
 
 		MLV_create_window("SNAKE", "3R-IN1B", width, height);
 		MLV_change_frame_rate(24);
@@ -138,6 +149,7 @@ int main(int argc, char *argv[])
 			touche != MLV_KEYBOARD_ESCAPE)
 		{
 			Element result;
+			char stats[256];
 			MLV_clear_window(MLV_COLOR_BLACK);
 
 			loop_count = (loop_count + 1) % DIFFICULTY;
@@ -149,43 +161,55 @@ int main(int argc, char *argv[])
 				{
 					if (result == WALL)
 					{
-					MLV_draw_text(width / 2 - 75, height / 2, "Game Over! You hit a wall.", MLV_COLOR_RED);
+						MLV_draw_text(width / 2 - 80, height / 2, "Game Over! You hit a wall.", MLV_COLOR_RED);
 					}
 					else if (result == SNAKE)
 					{
-					MLV_draw_text(width / 2 - 75, height / 2, "Game Over! You hit yourself.", MLV_COLOR_RED);
+						MLV_draw_text(width / 2 - 80, height / 2, "Game Over! You hit yourself.", MLV_COLOR_RED);
 					}
 					MLV_actualise_window();
 					MLV_wait_seconds(3);
+
+					global_score = previous_score;
 					break;
 				}
 				else if (result == FRUIT)
 				{
 					Position *tail = snake->segments_list;
 					Position *prev = NULL;
+					int dx, dy;
 					while (tail->next != NULL)
 					{
 						prev = tail;
 						tail = tail->next;
 					}
-				int dx = tail->x - (prev ? prev->x : tail->x);
+					dx = tail->x - (prev ? prev->x : tail->x);
-				int dy = tail->y - (prev ? prev->y : tail->y);
+					dy = tail->y - (prev ? prev->y : tail->y);
 					add_segment(snake, tail->x + dx, tail->y + dy);
 					place_snake(g, snake);
-				if (snake->size == initial_size + nb_fruit)
+					nb_fruit--;
+					global_score++;
+					if (snake->size == initial_size + total_fruits)
 					{
 						MLV_draw_text(
-						width / 2 - 75, height / 2,
+							width / 2 - 200, height / 2,
-						"You Win! All fruits collected.",
+							"You Win! All fruits collected. Proceeding to the next level.",
 							MLV_COLOR_GREEN);
 						MLV_actualise_window();
 						MLV_wait_seconds(3);
+						current_level++;
 						break;
 					}
 				}
 			}
 
 			draw_grid(g);
+
+			snprintf(stats, sizeof(stats),
+					 "Level: %d | Fruits Left: %d/%d | Score: %d | Snake Size: %d",
+					 current_level, nb_fruit, total_fruits, global_score, snake->size);
+			MLV_draw_text(10, height - 20, stats, MLV_COLOR_WHITE);
+
 			MLV_actualise_window();
 
 			switch (touche)
@@ -217,5 +241,12 @@ int main(int argc, char *argv[])
 		MLV_free_window();
 		free_grid(g);
 		free_snake(snake);
+
+		if (touche == MLV_KEYBOARD_ESCAPE)
+		{
+			break;
+		}
+	}
+
 	return 0;
 }

grid.c

@@ -1,5 +1,6 @@
 #include <stdio.h>
 #include <stdlib.h>
+#include <stdbool.h>
 #include <MLV/MLV_all.h>
 #include "grid.h"
 #include "snake.h"
@@ -46,7 +47,7 @@ void free_grid(Grid *g)
     free(g);
 }
 
-void debug(Grid *g)
+void debug_grid(Grid *g)
 {
     int i;
     for (i = 0; i < g->nbl; i++)
@@ -68,6 +69,27 @@ void draw_grid(Grid *g)
     int window_width = MLV_get_window_width();
     int window_height = MLV_get_window_height();
     int cell_size = compute_size(g, window_width, window_height);
+    MLV_Image *image_wall, *image_fruit, *image_snake, *image_empty;
+    image_wall = MLV_load_image("./assets/wall.png");
+    image_fruit = MLV_load_image("./assets/fruit.png");
+    image_snake = MLV_load_image("./assets/snake.png");
+    image_empty = MLV_load_image("./assets/grass.png");
+    if (image_wall != NULL)
+    {
+        MLV_resize_image_with_proportions(image_wall, cell_size, cell_size);
+    }
+    if (image_fruit != NULL)
+    {
+        MLV_resize_image_with_proportions(image_fruit, cell_size, cell_size);
+    }
+    if (image_snake != NULL)
+    {
+        MLV_resize_image_with_proportions(image_snake, cell_size, cell_size);
+    }
+    if (image_empty != NULL)
+    {
+        MLV_resize_image_with_proportions(image_empty, cell_size, cell_size);
+    }
 
     MLV_draw_filled_rectangle(0, 0, window_width, window_height, MLV_COLOR_BLACK);
 
@@ -81,16 +103,55 @@ void draw_grid(Grid *g)
             switch (g->grid[i][j])
             {
             case WALL:
+                if (image_wall == NULL)
+                {
                     MLV_draw_filled_rectangle(x, y, cell_size, cell_size, MLV_COLOR_BROWN);
+                }
+                else
+                {
+                    MLV_draw_image(image_wall, x, y);
+                }
                 break;
             case EMPTY:
+                if (image_empty != NULL)
+                {
+                    MLV_draw_image(image_empty, x, y);
+                }
+                else
+                {
                     MLV_draw_filled_rectangle(x, y, cell_size, cell_size, MLV_COLOR_WHITE);
+                }
+
                 break;
             case FRUIT:
+                if (image_fruit == NULL)
+                {
                     MLV_draw_filled_rectangle(x, y, cell_size, cell_size, MLV_COLOR_RED);
+                }
+                else
+                {
+                    MLV_draw_image(image_fruit, x, y);
+                }
                 break;
             case SNAKE:
+                if (image_snake == NULL)
+                {
                     MLV_draw_filled_rectangle(x, y, cell_size, cell_size, MLV_COLOR_GREEN);
+                }
+                else
+                {
+                    MLV_draw_image(image_snake, x, y);
+                }
+                break;
+            case SNAKEHEAD:
+                if (image_snake == NULL)
+                {
+                    MLV_draw_filled_rectangle(x, y, cell_size, cell_size, MLV_COLOR_GREEN);
+                }
+                else
+                {
+                    MLV_draw_image(image_snake, x, y);
+                }
                 break;
             default:
                 MLV_draw_filled_rectangle(x, y, cell_size, cell_size, MLV_COLOR_BLACK);
@@ -104,6 +165,12 @@ void place_snake(Grid *g, struct SnakeStruct *snake)
 {
     Position *current = snake->segments_list;
 
+    if (current != NULL)
+    {
+        g->grid[current->y][current->x] = SNAKEHEAD;
+        current = current->next;
+    }
+
     while (current != NULL)
     {
         g->grid[current->y][current->x] = SNAKE;
@@ -117,7 +184,8 @@ Element move_snake(struct SnakeStruct *snake, Grid *g)
     Position *head;
     Element element_at_head;
 
-    while (tail->next != NULL) {
+    while (tail->next != NULL)
+    {
         tail = tail->next;
     }
 
@@ -128,7 +196,12 @@ Element move_snake(struct SnakeStruct *snake, Grid *g)
     head = snake->segments_list;
     element_at_head = g->grid[head->y][head->x];
 
-    g->grid[head->y][head->x] = SNAKE;
+    g->grid[head->y][head->x] = SNAKEHEAD;
+
+    if (head->next != NULL)
+    {
+        g->grid[head->next->y][head->next->x] = SNAKE;
+    }
 
     return element_at_head;
 }
@@ -180,3 +253,113 @@ void copy(const char *src, char *dst)
     }
     dst[i] = '\0';
 }
+
+static bool are_adjacent(Position *a, Position *b)
+{
+    return (a->x == b->x && abs(a->y - b->y) == 1) ||
+           (a->y == b->y && abs(a->x - b->x) == 1);
+}
+
+int is_snake_connected(struct SnakeStruct *snake)
+{
+    Position *current = snake->segments_list;
+    while (current && current->next)
+    {
+        if (!are_adjacent(current, current->next))
+        {
+            return 0;
+        }
+        current = current->next;
+    }
+    return 1;
+}
+
+void read_snake_from_grid(Grid *g, struct SnakeStruct *snake)
+{
+    Position *positions = malloc(g->nbl * g->nbc * sizeof(Position));
+    int positions_count = 0;
+    Position *head = NULL;
+    Position *current;
+    int i;
+    int *used = NULL;
+
+    for (i = 0; i < g->nbl; i++)
+    {
+        int j;
+        for (j = 0; j < g->nbc; j++)
+        {
+            if (g->grid[i][j] == SNAKE || g->grid[i][j] == SNAKEHEAD)
+            {
+                positions[positions_count].x = j;
+                positions[positions_count].y = i;
+                positions[positions_count].next = NULL;
+
+                if (g->grid[i][j] == SNAKEHEAD)
+                {
+                    head = &positions[positions_count];
+                }
+
+                positions_count++;
+            }
+        }
+    }
+
+    if (head == NULL)
+    {
+        fprintf(stderr, "Error: Snake head (S) not found in the grid.\n");
+        free(positions);
+        exit(EXIT_FAILURE);
+    }
+    
+    used = malloc(positions_count * sizeof(int));
+    if (!used) {
+        fprintf(stderr, "Error: Could not allocate memory for used array.\n");
+        free(positions);
+        exit(EXIT_FAILURE);
+    }
+    for (i = 0; i < positions_count; i++)
+    {
+        used[i] = 0;
+    }
+
+    add_segment(snake, head->x, head->y);
+    used[head - positions] = 1;
+
+    current = head;
+    while (1)
+    {
+        int found = 0;
+        int j;
+        for (j = 0; j < positions_count; j++)
+        {
+            if (!used[j] && are_adjacent(current, &positions[j]))
+            {
+                add_segment(snake, positions[j].x, positions[j].y);
+                used[j] = 1;
+                current = &positions[j];
+                found = 1;
+                break;
+            }
+        }
+
+        if (!found)
+        {
+            break;
+        }
+    }
+
+    for (i = 0; i < positions_count; i++)
+    {
+        if (!used[i])
+        {
+            fprintf(stderr, "Error: Snake is not fully connected in the grid.\n");
+            free(positions);
+            exit(EXIT_FAILURE);
+        }
+    }
+
+    snake->dir = determine_initial_direction(g, snake->segments_list);
+
+    free(positions);
+    free(used);
+}

grid.h

@@ -19,12 +19,14 @@ typedef enum
     WALL = 'w',
     EMPTY = ' ',
     FRUIT = 'f',
-    SNAKE = 's'
+    SNAKE = 's',
+    SNAKEHEAD = 'S',
+    SNAKETAIL = 't'
 } Element;
 
-Grid* allocate_grid(int n, int m);
+Grid *allocate_grid(int n, int m);
 void free_grid(Grid *g);
-void debug(Grid *g);
+void debug_grid(Grid *g);
 int compute_size(Grid *g, int w, int h);
 void draw_grid(Grid *g);
 void place_snake(Grid *g, struct SnakeStruct *snake);
@@ -32,5 +34,7 @@ Element move_snake(struct SnakeStruct *snake, Grid *g);
 int count_nb_lines(FILE *stream);
 int count_fruits(FILE *stream, Grid *g);
 void copy(const char *src, char *dst);
+int is_snake_connected(struct SnakeStruct *snake);
+void read_snake_from_grid(Grid *g, struct SnakeStruct *snake);
 
 #endif /* GRID_H */

levels/default

@@ -1,22 +0,0 @@
-w                                  w
-                                    
-               f                    
-                                    
-     f               f              
-                                    
-                                    
-               f                    
-                                    
-                                    
-         wwwwwwwwww                 
-                                    
-                                    
-                                    
-                                    
-                                    
-                  f                 
-                                    
-         f                f         
-                                    
-                 f                  
-w                                  w

levels/level1

@@ -1,7 +1,7 @@
 w                                  w
                                     
                f                    
-                                    
+      ssssS                         
      f               f              
                                     
                                     
@@ -9,17 +9,14 @@ w                                  w
                                     
                                     
          wwwwwwwwww                 
-         w          w              w
+                                    
-         w f                       w
+                                    
-         wwwwww                    w
+                                    
-                                   w
+                                    
-                                   w
+                                    
-                  f                w
+                  f                 
-                                   w
+                                    
-         f                f        w
+         f                f         
-                                   w
+                                    
-                 f                 w
+                 f                  
 w                                  w
-                                   w
-                                   w
-                                   w

levels/level2

@@ -0,0 +1,25 @@
+w                                  w
+                                    
+               f                    
+                                    
+     f               f              
+                                    
+                                    
+               f                    
+                                    
+                                    
+         wwwwwwwwww                 
+    Sssssw          w              w
+         w f                       w
+         wwwwww                    w
+                                   w
+                                   w
+                  f                w
+                                   w
+         f                f        w
+                                   w
+                 f                 w
+w                                  w
+                                   w
+                                   w
+                                   w

snake.c

@@ -13,6 +13,7 @@ Snake *new_snake(void)
 
     snake->size = 0;
     snake->segments_list = NULL;
+    snake->dir = RIGHT;
 
     return snake;
 }
@@ -59,6 +60,18 @@ void free_snake(Snake *snake)
     free(snake);
 }
 
+void debug_snake(Snake *snake)
+{
+    Position *current = snake->segments_list;
+    printf("Snake segments:\n");
+    while (current != NULL)
+    {
+        printf("  (%d, %d)\n", current->x, current->y);
+        current = current->next;
+    }
+    printf("Snake size: %d\n", snake->size);
+}
+
 void crawl(Snake *snake, struct GridStruct *g)
 {
     Position *new_head = (Position *)malloc(sizeof(Position));
@@ -100,3 +113,35 @@ void crawl(Snake *snake, struct GridStruct *g)
     free(current->next);
     current->next = NULL;
 }
+
+Direction determine_initial_direction(struct GridStruct *g, Position *head)
+{
+    int x = head->x;
+    int y = head->y;
+
+    printf("Determining initial direction from position (%d, %d)\n", x, y);
+
+    if (x + 1 < g->nbc && g->grid[y][x + 1] != WALL && g->grid[y][x + 1] != SNAKE)
+    {
+        printf("Direction: RIGHT\n");
+        return RIGHT;
+    }
+    if (y + 1 < g->nbl && g->grid[y + 1][x] != WALL && g->grid[y + 1][x] != SNAKE)
+    {
+        printf("Direction: BOTTOM\n");
+        return BOTTOM;
+    }
+    if (x - 1 >= 0 && g->grid[y][x - 1] != WALL && g->grid[y][x - 1] != SNAKE)
+    {
+        printf("Direction: LEFT\n");
+        return LEFT;
+    }
+    if (y - 1 >= 0 && g->grid[y - 1][x] != WALL && g->grid[y - 1][x] != SNAKE)
+    {
+        printf("Direction: TOP\n");
+        return TOP;
+    }
+
+    printf("Default direction: BOTTOM\n");
+    return BOTTOM;
+}

snake.h

@@ -30,6 +30,8 @@ typedef struct SnakeStruct Snake;
 Snake *new_snake(void);
 void add_segment(Snake *snake, int x, int y);
 void free_snake(Snake *snake);
+void debug_snake(Snake *snake);
 void crawl(Snake *snake, struct GridStruct *g);
+Direction determine_initial_direction(struct GridStruct *g, Position *head);
 
 #endif /* SNAKE_H */