Invert colorscheme by default on ncurses version for more distinct squares

Makefile

@@ -1,7 +1,7 @@
 CC      ?= clang
 CFLAGS  += -g -Wall -Wextra
 LFLAGS  +=
-DEFINES := -DVT100 $(shell pkg-config --cflags sdl2)
+DEFINES := -DINVERT_COLORS -DVT100 $(shell pkg-config --cflags sdl2)
 
 PROGRAM := 2048
 C_FILES := $(wildcard src/*.c)

src/gfx_curses.c

@@ -2,6 +2,7 @@
 #include <ncurses.h>
 #include <unistd.h>
 #include "gfx.h"
+#include "merge.h"
 
 #define NUMBER_OF_COLORS 7
 
@@ -33,6 +34,15 @@ struct gfx_state* gfx_init(struct gamestate *g)
     if (g->opts->enable_color && has_colors()) {
         start_color();
 
+#ifdef INVERT_COLORS
+        init_pair(0, 0, 1);
+        init_pair(1, 0, 2);
+        init_pair(2, 0, 3);
+        init_pair(3, 0, 4);
+        init_pair(4, 0, 5);
+        init_pair(5, 0, 6);
+        init_pair(6, 0, 7);
+#else
         init_pair(0, 1, 0);
         init_pair(1, 2, 0);
         init_pair(2, 3, 0);
@@ -40,6 +50,7 @@ struct gfx_state* gfx_init(struct gamestate *g)
         init_pair(4, 5, 0);
         init_pair(5, 6, 0);
         init_pair(6, 7, 0);
+#endif
     }
 
     return s;
@@ -65,7 +76,7 @@ void gfx_draw(struct gfx_state *s, struct gamestate *g)
         for (x = 0; x < g->opts->grid_width; ++x) {
             if (g->grid[x][y]) {
                 wattron(s->window, COLOR_PAIR(g->grid[x][y] % NUMBER_OF_COLORS));
-                mvwprintw(s->window, ypos, xpos, "%*ld", g->print_width, merge_value(g->grid[x][y]));
+                mvwprintw(s->window, ypos, xpos, "%-*ld", g->print_width, merge_value(g->grid[x][y]));
                 wattroff(s->window, COLOR_PAIR(g->grid[x][y] % NUMBER_OF_COLORS));
                 mvwprintw(s->window, ypos, xpos + g->print_width, " |");
             }

src/highscore.c

@@ -56,6 +56,7 @@ void highscore_reset(void)
     printf("Are you sure you want to reset your scores? Y(es) or N(o)\n");
 
     while (1) {
+        /* fgets is used to avoid queuing that may occur with getchar */
         fgets(resp, resp_length, stdin);
         string_to_lower(resp);