Vasylenko
1 month ago
1 changed files with 82 additions and 0 deletions
@ -0,0 +1,82 @@ |
|||
#include "snake.h" |
|||
#include <stdlib.h> |
|||
|
|||
|
|||
struct snake* add_snake(struct snake* snake, int x, int y) { |
|||
struct snake* new_part = (struct snake*)malloc(sizeof(struct snake)); |
|||
if (!new_part) return NULL; |
|||
new_part->x = x; |
|||
new_part->y = y; |
|||
new_part->next = snake; |
|||
return new_part; |
|||
} |
|||
|
|||
|
|||
struct snake* remove_snake(struct snake* snake) { |
|||
if (snake == NULL) return NULL; |
|||
if (snake->next == NULL) { |
|||
free(snake); |
|||
return NULL; |
|||
} |
|||
struct snake* current = snake; |
|||
while (current->next->next != NULL) { |
|||
current = current->next; |
|||
} |
|||
free(current->next); |
|||
current->next = NULL; |
|||
return snake; |
|||
} |
|||
|
|||
|
|||
int is_snake(struct snake* snake, int x, int y) { |
|||
struct snake* current = snake; |
|||
while (current != NULL) { |
|||
if (current->x == x && current->y == y) |
|||
return 1; |
|||
current = current->next; |
|||
} |
|||
return 0; |
|||
} |
|||
|
|||
|
|||
void free_snake(struct snake* snake) { |
|||
while (snake != NULL) { |
|||
struct snake* next = snake->next; |
|||
free(snake); |
|||
snake = next; |
|||
} |
|||
} |
|||
|
|||
|
|||
int step_state(struct state* state) { |
|||
int new_x = state->snake->x + state->sx; |
|||
int new_y = state->snake->y + state->sy; |
|||
|
|||
if (new_x < 0 || new_x >= state->width || new_y < 0 || new_y >= state->height) |
|||
return END_WALL; |
|||
if (is_snake(state->snake, new_x, new_y)) |
|||
return END_SNAKE; |
|||
|
|||
|
|||
for (int i = 0; i < FOOD_COUNT; i++) { |
|||
if (state->foodx[i] == new_x && state->foody[i] == new_y) { |
|||
state->foodx[i] = state->foody[i] = -1; |
|||
state->snake = add_snake(state->snake, new_x, new_y); |
|||
|
|||
int all_eaten = 1; |
|||
for (int j = 0; j < FOOD_COUNT; j++) { |
|||
if (state->foodx[j] != -1 || state->foody[j] != -1) { |
|||
all_eaten = 0; |
|||
break; |
|||
} |
|||
} |
|||
return all_eaten ? END_FOOD : END_CONTINUE; |
|||
} |
|||
} |
|||
|
|||
|
|||
state->snake = add_snake(state->snake, new_x, new_y); |
|||
state->snake = remove_snake(state->snake); |
|||
return END_CONTINUE; |
|||
} |
|||
|
Loading…
Reference in new issue