Fix crash in fp_sqrt() function

.gitignore

@@ -0,0 +1,2 @@
+**/*.o
+bin/*.broguesave

src/brogue/Combat.c

@@ -504,7 +504,7 @@ boolean forceWeaponHit(creature *defender, item *theItem) {
     zap(oldLoc, newLoc, &theBolt, false);
     if (!(defender->bookkeepingFlags & MB_IS_DYING)
         && distanceBetween(oldLoc[0], oldLoc[1], defender->xLoc, defender->yLoc) > 0
-        && distanceBetween(oldLoc[0], oldLoc[1], defender->xLoc, defender->yLoc) << FP_BASE < fp_weaponForceDistance(fp_netEnchant(theItem))) {
+        && distanceBetween(oldLoc[0], oldLoc[1], defender->xLoc, defender->yLoc) < fp_weaponForceDistance(fp_netEnchant(theItem))) {
 
         if (pmap[defender->xLoc + newLoc[0] - oldLoc[0]][defender->yLoc + newLoc[1] - oldLoc[1]].flags & (HAS_MONSTER | HAS_PLAYER)) {
             otherMonster = monsterAtLoc(defender->xLoc + newLoc[0] - oldLoc[0], defender->yLoc + newLoc[1] - oldLoc[1]);

src/brogue/Globals.c

@@ -1143,7 +1143,7 @@ const blueprint blueprintCatalog[NUMBER_BLUEPRINTS] = {
 	{{1, 12},           {30, 50},	30,		6,			0,                  (BP_ROOM | BP_PURGE_INTERIOR | BP_SURROUND_WITH_WALLS | BP_OPEN_INTERIOR | BP_IMPREGNABLE | BP_REWARD),	{
 		{0,			CARPET,		DUNGEON,		{0,0},		0,			0,			-1,			0,				0,				0,			0,			(MF_EVERYWHERE)},
 		{0,			0,          0,              {1,1},		1,			0,          0,          0,				2,				0,			0,          (MF_BUILD_AT_ORIGIN | MF_PERMIT_BLOCKING | MF_BUILD_VESTIBULE)},
-        {0,			ALTAR_CAGE_OPEN,DUNGEON,	{1,1},		1,			(WEAPON|ARMOR|WAND|STAFF|RING|CHARM),-1,0,2,			0,			(ITEM_IS_KEY | ITEM_KIND_AUTO_ID | ITEM_PLAYER_AVOIDS),	(MF_GENERATE_ITEM | MF_NO_THROWING_WEAPONS | MF_TREAT_AS_BLOCKING | MF_IMPREGNABLE)},
+        {0,			ALTAR_CAGE_OPEN,DUNGEON,	{1,1},		1,			(WEAPON|ARMOR|WAND|STAFF|RING|CHARM),-1,0,2,			0,			(ITEM_IS_KEY | ITEM_KIND_AUTO_ID | ITEM_MAX_CHARGES_KNOWN | ITEM_PLAYER_AVOIDS),	(MF_GENERATE_ITEM | MF_NO_THROWING_WEAPONS | MF_TREAT_AS_BLOCKING | MF_IMPREGNABLE)},
         {0,			ALTAR_CAGE_OPEN,DUNGEON,	{3,3},		3,			(WEAPON|ARMOR|WAND),-1,	0,				2,				0,			(ITEM_IS_KEY | ITEM_KIND_AUTO_ID | ITEM_PLAYER_AVOIDS),	(MF_GENERATE_ITEM | MF_NO_THROWING_WEAPONS | MF_TREAT_AS_BLOCKING | MF_IMPREGNABLE)},
 		{0,			ALTAR_CAGE_OPEN,DUNGEON,	{2,3},		2,			(STAFF|RING|CHARM),-1,	0,				2,				0,			(ITEM_IS_KEY | ITEM_KIND_AUTO_ID | ITEM_MAX_CHARGES_KNOWN | ITEM_PLAYER_AVOIDS),	(MF_GENERATE_ITEM | MF_NO_THROWING_WEAPONS | MF_TREAT_AS_BLOCKING | MF_IMPREGNABLE)},
         {0,			STATUE_INERT,DUNGEON,		{2,3},		0,			0,			-1,			0,				2,				0,          0,          (MF_TREAT_AS_BLOCKING | MF_BUILD_IN_WALLS | MF_IMPREGNABLE)}}},

src/brogue/Items.c

@@ -2351,7 +2351,7 @@ void itemDetails(char *buf, item *theItem) {
 								fp_staffEntrancementDuration(enchant + FP_FACTOR));
 						break;
 					case STAFF_HEALING:
-						if (enchant < 10) {
+						if (enchant >> FP_BASE < 10) {
 							sprintf(buf2, "This staff will heal its target by %i%% of its maximum health. (If the staff is enchanted, this will increase to %i%%.)",
 									theItem->enchant1 * 10,
 									(theItem->enchant1 + 1) * 10);
@@ -2462,8 +2462,8 @@ void itemDetails(char *buf, item *theItem) {
                             break;
                         case RING_WISDOM:
                             sprintf(buf2, "\n\nWhen worn, your staffs will recharge at %i%% of their normal rate. (If the ring is enchanted, the rate will increase to %i%% of the normal rate.)",
-                                    (int) (100 * fp_ringWisdomMultiplier(enchant) >> FP_BASE),
-                                    (int) (100 * fp_ringWisdomMultiplier(enchant + FP_FACTOR) >> FP_BASE));
+                                    (int) (10 * fp_ringWisdomMultiplier(enchant)),
+                                    (int) (10 * fp_ringWisdomMultiplier(enchant + FP_FACTOR)));
                             strcat(buf, buf2);
                             break;
                         case RING_REAPING:

src/brogue/Monsters.c

@@ -1580,7 +1580,7 @@ boolean awareOfTarget(creature *observer, creature *target) {
 	} else if (observer->creatureState == MONSTER_TRACKING_SCENT) {
 		// already aware of the target, lose track 3% of the time if outside of stealth range.
          if (perceivedDistance > awareness) {
-             retval = rand_percent(3);
+             retval = rand_percent(97);
          } else {
             retval = true;
          }

src/brogue/Sqrt.c

@@ -80,7 +80,7 @@ unsigned fp_sqrt(unsigned val)
         We use the identity 2^a * 2^a = 2^(2*a) or:
          sqrt(2^a) = 2^(a/2)
     */
-    if(bitpos > 0u) /* val > 1 */
+    if(bitpos > 0) /* val > 1 */
         x = (1u<<FP_BASE)<<(bitpos >> 1u);
     else if(bitpos < 0) /* 0 < val < 1 */
         x = (1u<<FP_BASE)<<((unsigned)(-bitpos) << 1u);