Initialization

a2/snake.c

@@ -1,23 +1,26 @@
-#include "world.h"
 #include <stdlib.h>
 #include <curses.h>
-#include <stdlib.h>
 #include <string.h>
-#include "snake.h"
-// This file contains functions for drawing the the game and changing the state
+#include "world.h"
 
-// Start is called one in the beginning
+// Game state structure
+struct state {
+    int width;
+    int height;
+    int sx;
+    int sy;
+    struct snake* snake;
+    int foodx[5];
+    int foody[5];
+};
+
+// Initialize game state
 void* init_game() {
-    // Allocate memory for the state
-    struct state* st = calloc(1,(sizeof(struct state)));
+    struct state* st = calloc(1, sizeof(struct state));
     return st;
 }
 
-// The first event
 // Initialize game state
-// - borders
-// - snake position
-// - food position
 void init_snake(struct event* world, struct state* st) {
     int cy = world->height / 2;
     int cx = world->width / 2 - 5;
@@ -31,70 +34,50 @@ void init_snake(struct event* world, struct state* st){
         st->foodx[i] = rand() % w;
         st->foody[i] = rand() % h;
     }
-    // Initial game vector
     st->sx = 1;
     st->sy = 0;
 }
 
-// Step is called in a loop once in interval.
-// It should modify the state and draw it.
+// Handle game events
 int world_event(struct event* w, void* game) {
-    // Get state pointer
     struct state* st = game;
     if (w->type == EVENT_START) {
-        // Called on beginning
         init_snake(w, st);
-    }
-    // Called on key press
-    else if (w->type == EVENT_KEY){
+    } else if (w->type == EVENT_KEY) {
         int key = w->key;
-        // Modifies vector of snake movement
         if (key == KEY_RIGHT) {
             st->sx = 1;
             st->sy = 0;
-        }
-        else if (key == KEY_LEFT){
+        } else if (key == KEY_LEFT) {
             st->sx = -1;
             st->sy = 0;
-        }
-        else if (key == KEY_DOWN){
+        } else if (key == KEY_DOWN) {
             st->sx = 0;
             st->sy = 1;
-        }
-        else if (key == KEY_UP){
+        } else if (key == KEY_UP) {
             st->sx = 0;
             st->sy = -1;
         }
-    }
-    // Called on esc key
-    else if (w->type == EVENT_ESC){
-            // Non zero means finish the loop and stop the game.
+    } else if (w->type == EVENT_ESC) {
         return 1;
-    }
-    // Called on interval timeout
-    else if (w->type == EVENT_TIMEOUT){
+    } else if (w->type == EVENT_TIMEOUT) {
         clear_screen();
-        // Copy screen size
         st->width = w->width;
         st->height = w->height;
-        // Change game state
         int r = step_state(st);
         char ms[200];
         sprintf(ms, "r %d\n", r);
         set_message(ms, 9, 9);
-        // Draw snake
         struct snake* sn = st->snake;
         while (sn != NULL) {
             set_cell('x', sn->x, sn->y);
             sn = sn->next;
         }
-        // Draw food
         for (int i = 0; i < FOOD_COUNT; i++) {
             if (st->foodx[i] >= 0 && st->foody[i] >= 0) {
                 set_cell('*', st->foodx[i], st->foody[i]);
             }
         }
-        // Stop the game
         if (r) {
             char message[] = "Koniec";
             set_message(message, 10, 10);
@@ -103,7 +86,6 @@ int world_event(struct event* w,void* game){
     return 0;
 }
 
-
 int main(int argc, char** argv) {
     start_world(init_game, world_event, free);
     return 0;