Merge pull request #23 from paul-arutyunov/master

Add arrow keys

src/gfx.h

@@ -1,6 +1,11 @@
 #ifndef GFX_H
 #define GFX_H
 
+#define INPUT_UP	0
+#define INPUT_DOWN	1
+#define INPUT_LEFT	2
+#define INPUT_RIGHT	3
+
 #include "engine.h"
 
 struct gfx_state;

src/gfx_curses.c

@@ -21,6 +21,7 @@ struct gfx_state* gfx_init(struct gamestate *g)
 {
     initscr();
     cbreak();
+    keypad(stdscr, true);
     noecho();
     curs_set(FALSE);
     refresh();
@@ -116,7 +117,27 @@ int gfx_getch(struct gfx_state *s)
     nodelay(s->window, TRUE);
     while (wgetch(s->window) != ERR);
     nodelay(s->window, FALSE);
+
+    switch (c)
+    {
+	case KEY_UP:
+		return INPUT_UP;
+		break;
+	case KEY_DOWN:
+		return INPUT_DOWN;
+		break;
+	case KEY_RIGHT:
+		return INPUT_RIGHT;
+		break;
+	case KEY_LEFT:
+		return INPUT_LEFT;
+		break;
+
+	default:
 		return c;
+		break;
+	
+    }
 }
 
 void gfx_sleep(int ms)

src/main.c

@@ -39,18 +39,22 @@ get_new_key:;
         switch (value) {
             case 'h':
             case 'a':
+	    case INPUT_LEFT:
                 direction = dir_left;
                 break;
             case 'l':
             case 'd':
+	    case INPUT_RIGHT:
                 direction = dir_right;
                 break;
             case 'j':
             case 's':
+	    case INPUT_DOWN:
                 direction = dir_down;
                 break;
             case 'k':
             case 'w':
+	    case INPUT_UP:
                 direction = dir_up;
                 break;
             case 'q':