- http://eressea.upb.de/mantis/bug_view_page.php?bug_id=0000053

Verflucht komplizierter Fix in movement. Das kann eigentlich nur schiefgehen.

Bei der Gelegenheit mal in movement etwas Code-Massage betrieben. Das ist zwar grundsätzlich ein hoffnungsloser Fall, aber ich kann's nicht lassen.

src/common/gamecode/monster.c

@@ -464,7 +464,7 @@ set_movement_order(unit * u, const region * target, int moves, boolean (*allowed
 		region * prev = plan[position];
 		region * next = plan[++position];
 		direction_t dir = reldirection(prev, next);
-		assert(dir!=NODIRECTION);
+		assert(dir!=NODIRECTION && dir!=D_SPECIAL);
 		*c++ = ' ';
 		strcpy(c, locale_string(u->faction->locale, directions[dir]));
 		c += strlen(c);
@@ -849,21 +849,6 @@ static void ponnuki(unit * u)
 		NULL };
 	int jokes = 0;
 
-	/*
-	attrib * a = a_find(u->attribs, &at_direction);
-
-	if (!a) {
-		a_add(&u->attribs, a = a_new(&at_direction));
-		a->data.i = D_NORTHWEST;
-	}
-	if (rand() % 10 == 0) a->data.i = rand() % MAXDIRECTIONS;
-
-	travel(u->region, u, u->region->connect[a->data.i], false);
-	*/
-
-	/* Rausgenommen, übergibt irgendwann NULL, das führt zu einem
-	 * SegFault. */
-
 	while(joke[jokes]) jokes++;
 	if (jokes) addmessage(u->region, 0, joke[rand() % jokes], MSG_MESSAGE, ML_IMPORTANT);
 

src/common/gamecode/report.c

@@ -1005,9 +1005,6 @@ prices(FILE * F, const region * r, const faction * f)
 	rparagraph(F, buf, 0, 0);
 
 }
-/* ------------------------------------------------------------- */
-extern const direction_t back[MAXDIRECTIONS];
-/* ------------------------------------------------------------- */
 
 boolean
 see_border(const border * b, const faction * f, const region * r)

src/common/kernel/battle.c

@@ -2422,8 +2422,8 @@ aftermath(battle * b)
 					fset(du, UFL_MOVED);
 					leave(du->region, du);
 					if (df->run.region) {
-						travel(r, du, df->run.region, 1);
-						df->run.region = du->region;
+                                          travel(du, df->run.region, 1, NULL);
+                                          df->run.region = du->region;
 					}
 				} else
 #endif

src/common/kernel/eressea.h

@@ -56,12 +56,14 @@ typedef short spellid_t;
 struct plane;
 struct spell;
 struct region;
+struct region_list;
 struct race;
 struct ship;
 struct building;
 struct faction;
 struct party;
 struct unit;
+struct unit_list;
 struct item;
 /* item */
 struct strlist;
@@ -724,6 +726,7 @@ enum {
 	D_WEST,
 	MAXDIRECTIONS,
 	D_PAUSE,
+        D_SPECIAL,
 	NODIRECTION = (direction_t) - 1
 };
 

src/common/kernel/movement.h

@@ -51,14 +51,13 @@ extern int personcapacity(const struct unit *u);
 
 extern direction_t getdirection(const struct locale *);
 extern void movement(void);
-
-extern direction_t * travel(struct region * r, struct unit * u, struct region * r2, int flucht);
+extern void travel(struct unit * u, struct region * r2, int flucht, struct region_list** routep);
 extern struct unit *is_guarded(struct region * r, struct unit * u, unsigned int mask);
 extern int enoughsailors(struct region * r, struct ship * sh);
 extern boolean canswim(struct unit *u);
 extern struct unit *kapitaen(struct region * r, struct ship * sh);
 extern void travelthru(const struct unit * u, struct region * r);
-extern struct ship * move_ship(struct ship * sh, struct region * from, struct region * to, struct region ** route);
+extern struct ship * move_ship(struct ship * sh, struct region * from, struct region * to, struct region_list * route);
 
 extern void follow_unit(void);
 

src/common/kernel/region.c

@@ -52,24 +52,38 @@ static int g_maxluxuries = 0;
 
 const int delta_x[MAXDIRECTIONS] =
 {
-	-1, 0, 1, 1, 0, -1
+  -1, 0, 1, 1, 0, -1
 };
 
 const int delta_y[MAXDIRECTIONS] =
 {
-	1, 1, 0, -1, -1, 0
+  1, 1, 0, -1, -1, 0
 };
 
-const direction_t back[MAXDIRECTIONS] =
+static const direction_t back[MAXDIRECTIONS] =
 {
-	D_SOUTHEAST,
-	D_SOUTHWEST,
-	D_WEST,
-	D_NORTHWEST,
-	D_NORTHEAST,
-	D_EAST,
+  D_SOUTHEAST,
+    D_SOUTHWEST,
+    D_WEST,
+    D_NORTHWEST,
+    D_NORTHEAST,
+    D_EAST,
 };
 
+direction_t 
+dir_invert(direction_t dir)
+{
+  switch (dir) {
+    case D_PAUSE:
+    case D_SPECIAL:
+      return dir;
+      break;
+    default:
+      if (dir>=0 && dir<MAXDIRECTIONS) return back[dir];
+  }
+  assert(!"illegal direction");
+  return NODIRECTION;
+}
 const char *
 regionname(const region * r, const faction * f)
 {
@@ -288,6 +302,7 @@ r_connect(const region * r, direction_t dir)
 
 #ifdef FAST_CONNECT
 	region * rmodify = (region*)r;
+        assert (dir>=0 && dir<MAXDIRECTIONS);
 	if (r->connect[dir]) return r->connect[dir];
 #endif
 	assert(dir<MAXDIRECTIONS);
@@ -343,21 +358,40 @@ distance(const region * r1, const region * r2)
 	return koor_distance(r1->x, r1->y, r2->x, r2->y);
 }
 
-direction_t
+static direction_t
 koor_reldirection(int ax, int ay, int bx, int by)
 {
-	direction_t i;
-	for (i=0;i!=MAXDIRECTIONS;++i) {
-		if (bx-ax == delta_x[i] &&
-			by-ay == delta_y[i]) return i;
-	}
-	return NODIRECTION;
+  direction_t dir;
+  for (dir=0;dir!=MAXDIRECTIONS;++dir) {
+    if (bx-ax == delta_x[dir] && by-ay == delta_y[dir]) return dir;
+  }
+  return NODIRECTION;
+}
+
+spec_direction *
+special_direction(const region * from, const region * to)
+{
+  spec_direction *sd;
+  const attrib *a = a_findc(from->attribs, &at_direction);
+  
+  while (a!=NULL) {
+    sd = (spec_direction *)a->data.v;
+    if (sd->active && sd->x==to->x && sd->y==to->y) return sd;
+    a = a->nexttype;
+  }
+  return NULL;
 }
 
 direction_t
-reldirection(region * from, region * to)
+reldirection(const region * from, const region * to)
 {
-	return koor_reldirection(from->x, from->y, to->x, to->y);
+  direction_t dir = koor_reldirection(from->x, from->y, to->x, to->y);
+
+  if (dir==NODIRECTION) {
+    spec_direction *sd = special_direction(from, to);
+    if (sd!=NULL) return D_SPECIAL;
+  }
+  return dir;
 }
 
 void

src/common/kernel/region.h

@@ -110,7 +110,7 @@ typedef struct region_list {
 extern struct message_list * r_getmessages(const struct region * r, const struct faction * viewer);
 extern struct message * r_addmessage(struct region * r, const struct faction * viewer, struct message * msg);
 
-typedef struct {
+typedef struct spec_direction {
   int  x;
   int  y;
   int  duration;
@@ -126,8 +126,7 @@ typedef struct {
 #define region_hashkey(r) (abs((r)->x + 0x100 * (r)->y))
 int distance(const struct region*, const struct region*);
 int koor_distance(int ax, int ay, int bx, int by) ;
-direction_t reldirection(struct region * from, struct region * to);
-direction_t koor_reldirection(int ax, int ay, int bx, int by) ;
+extern direction_t reldirection(const struct region * from, const struct region * to);
 extern struct region * findregion(int x, int y);
 
 extern attrib_type at_direction;
@@ -151,6 +150,7 @@ void runhash(struct region * r);
 
 void free_regionlist(region_list *rl);
 void add_regionlist(region_list **rl, struct region *r);
+extern struct spec_direction * special_direction(const region * from, const region * to);
 
 int woodcount(const struct region * r);
 int deathcount(const struct region * r);
@@ -220,8 +220,7 @@ extern void terraform(struct region * r, terrain_t terrain);
 
 extern const int delta_x[MAXDIRECTIONS];
 extern const int delta_y[MAXDIRECTIONS];
-extern const direction_t back[MAXDIRECTIONS];
-
+extern direction_t dir_invert(direction_t dir);
 extern int production(const struct region *r);
 extern int read_region_reference(struct region ** r, FILE * F);
 extern void write_region_reference(const struct region * r, FILE * F);

src/mapper/autoseed.c

@@ -219,7 +219,7 @@ autoseed(struct region_list * rlist)
 			if (r && r->land) {
 				int k;
 				for (k=i+1;k!=nseeds;++k) if (seeds[k].region==r) {
-					seeds[k].next[back[d]] = seeds+i;
+					seeds[k].next[dir_invert(d)] = seeds+i;
 					seeds[i].next[d] = seeds+k;
 				}
 			}