[WIP] Port of Simon Tatham's Puzzle Collectionpuzzles

Original revision: 5123b1bf68777ffa86e651f178046b26a87cf2d9

MIT Licensed. Some games still crash and others are unplayable due to
issues with controls. Still need a "real" polygon filling algorithm.

The following games are at least partially broken for various reasons:

Cube:     crash with certain settings
Galaxies: crash
Inertia:  crash
Keen:     input issues
Loopy:    weird stuff happens
Map:      crash on input
Mines:    weird stuff happens on target
Palisade: input issues
Signpost: crash on input
Solo:     input issues
Towers:   input and drawing issues
Train Tracks: drawing issues
Twiddle:  weird animation on target
Undead:   input and drawing issues
Unequal:  input and drawing issues
Untangle: input issues

All in all, about 40% of the games are at least partially broken.

Change-Id: I7c69b6860ab115f973c8d76799502e9bb3d52368

1 files changed, 69 insertions, 0 deletions

diff --git a/apps/plugins/puzzles/nullfe.c b/apps/plugins/puzzles/nullfe.c
new file mode 100644
index 0000000..4c9975b
--- /dev/null
+++ b/apps/plugins/puzzles/nullfe.c
@@ -0,0 +1,69 @@
+/*
+ * nullfe.c: Null front-end code containing a bunch of boring stub
+ * functions. Used to ensure successful linking when building the
+ * various stand-alone solver binaries.
+ */
+
+#include <stdarg.h>
+
+#include "puzzles.h"
+
+void frontend_default_colour(frontend *fe, float *output) {}
+void draw_text(drawing *dr, int x, int y, int fonttype, int fontsize,
+               int align, int colour, char *text) {}
+void draw_rect(drawing *dr, int x, int y, int w, int h, int colour) {}
+void draw_line(drawing *dr, int x1, int y1, int x2, int y2, int colour) {}
+void draw_thick_line(drawing *dr, float thickness,
+		     float x1, float y1, float x2, float y2, int colour) {}
+void draw_polygon(drawing *dr, int *coords, int npoints,
+                  int fillcolour, int outlinecolour) {}
+void draw_circle(drawing *dr, int cx, int cy, int radius,
+                 int fillcolour, int outlinecolour) {}
+char *text_fallback(drawing *dr, const char *const *strings, int nstrings)
+{ return dupstr(strings[0]); }
+void clip(drawing *dr, int x, int y, int w, int h) {}
+void unclip(drawing *dr) {}
+void start_draw(drawing *dr) {}
+void draw_update(drawing *dr, int x, int y, int w, int h) {}
+void end_draw(drawing *dr) {}
+blitter *blitter_new(drawing *dr, int w, int h) {return NULL;}
+void blitter_free(drawing *dr, blitter *bl) {}
+void blitter_save(drawing *dr, blitter *bl, int x, int y) {}
+void blitter_load(drawing *dr, blitter *bl, int x, int y) {}
+int print_mono_colour(drawing *dr, int grey) { return 0; }
+int print_grey_colour(drawing *dr, float grey) { return 0; }
+int print_hatched_colour(drawing *dr, int hatch) { return 0; }
+int print_rgb_mono_colour(drawing *dr, float r, float g, float b, int grey)
+{ return 0; }
+int print_rgb_grey_colour(drawing *dr, float r, float g, float b, float grey)
+{ return 0; }
+int print_rgb_hatched_colour(drawing *dr, float r, float g, float b, int hatch)
+{ return 0; }
+void print_line_width(drawing *dr, int width) {}
+void print_line_dotted(drawing *dr, int dotted) {}
+void midend_supersede_game_desc(midend *me, char *desc, char *privdesc) {}
+void status_bar(drawing *dr, char *text) {}
+
+void fatal(char *fmt, ...)
+{
+    va_list ap;
+
+    fprintf(stderr, "fatal error: ");
+
+    va_start(ap, fmt);
+    vfprintf(stderr, fmt, ap);
+    va_end(ap);
+
+    fprintf(stderr, "\n");
+    exit(1);
+}
+
+#ifdef DEBUGGING
+void debug_printf(char *fmt, ...)
+{
+    va_list ap;
+    va_start(ap, fmt);
+    vfprintf(stdout, fmt, ap);
+    va_end(ap);
+}
+#endif