Add Codacy integration and fix code style issues

README.md

@@ -1,6 +1,8 @@
 # A Vim Story
 _A ncurses based game for learning Vim_
 
+[![Codacy Badge](https://api.codacy.com/project/badge/Grade/053e7aa12d05484fbe77a521bb2d4f34)](https://www.codacy.com/app/UtkarshMe/A-Vim-Story?utm_source=github.com&utm_medium=referral&utm_content=UtkarshMe/A-Vim-Story&utm_campaign=Badge_Grade)
+
 
 
 ### Overview

src/action.c

@@ -37,7 +37,6 @@ command_t action_make_move(const map_t *map)
     int loop = 1;
     int multiplier = 0;
     input_key_t key;
-    int touched;
     command_t command;
 
     /* calculate the update */
@@ -51,7 +50,7 @@ command_t action_make_move(const map_t *map)
 
         /* 1 if the real x of cursor is touched and thus has to be changed.
          * a successful change of x by a key can do that */
-        touched = 0;
+        int touched = 0;
 
         if (!key_unlocked(key)) {
             key = interface_input_key();

src/interface.c

@@ -162,14 +162,11 @@ void interface_display_clear()
 
 void interface_display_menu(enum menu_item selected)
 {
-    int x = 0;
-    enum menu_item y = 0;
-
     wclear(menu_window);
     box(menu_window, '|', '-');           /* create a box around the window */
 
-    for (; y < MENU_SIZE; ++y) {
-        x = MENU_PADDING + ( MENU_WIDTH - strlen(menu_label[y]) ) / 2;
+    for (enum menu_item y = 0; y < MENU_SIZE; ++y) {
+        int x = MENU_PADDING + ( MENU_WIDTH - strlen(menu_label[y]) ) / 2;
 
         if (y == selected) wstandout(menu_window);
         mvwprintw(menu_window, y + 1 + MENU_PADDING - 1, x, menu_label[y]);
@@ -266,9 +263,8 @@ input_key_t interface_input_key()
 
 char * interface_input_command()
 {
-    char *line;
+    char *line = NULL;
     int line_size = 100;
-    int key;
     int loop = 1;
     int i = 0;
 
@@ -281,7 +277,7 @@ char * interface_input_command()
     mvwprintw(command_window, 0, 0, ":");
 
     while (loop) {
-        key = mvwgetch(command_window, 0, i + 1);
+        int key = mvwgetch(command_window, 0, i + 1);
         switch (key) {
 
             /* backspace */