diff --git a/a3/world.h b/a3/world.h
deleted file mode 100644
index 73be057..0000000
--- a/a3/world.h
+++ /dev/null
@@ -1,113 +0,0 @@
-#ifndef _WORLD_H_
-#define _WORLD_H_
-
-#include <curses.h>
-
-/**
- * World represented as a rectangular matrix of colorful characters.
- * 
- * Point [0,0] is displayed the upper left corner of the screen.
- * 
- */
-
-enum event_type {
-    EVENT_START,
-    EVENT_TIMEOUT,
-    EVENT_KEY,
-    EVENT_MOUSE,
-    EVENT_RESIZE,
-    EVENT_ESC,
-    EVENT_END,
-};
-
-struct event {
-    /**
-     * Last width of the screen.
-     */
-    int width;
-    /**
-     * Last height of the screen.
-     */
-    int height;
-    /**
-     * Last pressed key or Curses event.
-     *
-     * Special event  values:
-     * ERR if timeout,
-     * KEY_RESIZE if screen resize
-     * KEY_EVENT, other event,
-     * KEY_MOUSE, mouse clicked
-     *
-     * Key values:
-     *
-     * ' ' Space
-     * KEY_DOWN Arrow down
-     * KEY_UP Arrow up
-     * KEY_LEFT Arrow left
-     * KEY_RIGHT Arrow right
-     * KEY_A1 Upper left of keypad
-     * KEY_A3 Upper right of keypad
-     * KEY_B2 Center of keypad
-     * KEY_C1 Lower left of keypad
-     * KEY_C3 Lower right of keypad
-     *
-     * KEY_ENTER
-     * KEY_BACKSPACE
-     */
-    int key;
-    int alt_key;
-    enum event_type type;
-    int mouse_x;
-    int mouse_y;
-    int mouse_left;
-    int mouse_right;
-    int mouse_middle;
-    long int time_ms;
-};
-
-/**
- * Sets cell to a state.
- * @param event 
- * @param x coordinate of cell
- * @param y coordinate of cell
- * @param new state of the cell
- */
-void set_cell(int character,int x,int y);
-
-/**
- * COLOR_BLACK   0
- * COLOR_RED     1
- * COLOR_GREEN   2
- * COLOR_YELLOW  3
- * COLOR_BLUE    4
- * COLOR_MAGENTA 5
- * COLOR_CYAN    6
- * COLOR_WHITE   7
- */
-
-#define COLOR_COUNT 8
-
-void set_color_cell(int character,int x,int y,short front_color,short back_color);
-
-
-/**
- *
- * @param event
- * @param number of commandline arguments
- * @param init_world
- * @param destroy_world
- *
- * void init_world(struct event* w);
- * Initializes user state.
- * Free user state.
- * @param event
- */
-
-int start_world(void* (*init_game)(),int (*world_event)(struct event* event,void* game),void (*destroy_game)(void* game));
-
-void game_speed(int value);
-
-void set_message(const char* message,int x,int y);
-void clear_screen();
-
-#endif