Some improvements to some things.

modules/corelib/util.lua

@@ -284,10 +284,6 @@ function numbertoboolean(number)
   end
 end
 
-function postostring(pos)
-  return pos.x .. " " .. pos.y .. " " .. pos.z
-end
-
 function signalcall(param, ...)
   if type(param) == 'function' then
     local status, ret = pcall(param, ...)

modules/gamelib/const.lua

@@ -34,14 +34,25 @@ EmblemOther = 5
 VipIconFirst = 0
 VipIconLast = 10
 
-North = 0
-East = 1
-South = 2
-West = 3
-NorthEast = 4
-SouthEast = 5
-SouthWest = 6
-NorthWest = 7
+Directions = {
+  North = 0,
+  East = 1,
+  South = 2,
+  West = 3,
+  NorthEast = 4,
+  SouthEast = 5,
+  SouthWest = 6,
+  NorthWest = 7
+}
+
+North = Directions.North
+East = Directions.East
+South = Directions.South
+West = Directions.West
+NorthEast = Directions.NorthEast
+SouthEast = Directions.SouthEast
+SouthWest = Directions.SouthWest
+NorthWest = Directions.NorthWest
 
 FightOffensive = 1
 FightBalanced = 2

modules/gamelib/gamelib.otmod

@@ -9,6 +9,7 @@ Module
 
   @onLoad: |
     dofile 'const'
+    dofile 'util'
     dofile 'protocol'
     dofile 'protocollogin'
     dofile 'protocolgame'

modules/gamelib/position.lua

@@ -18,4 +18,9 @@ function Position.lessThan(pos1, pos2, orEqualTo)
   else
     return pos1.x < pos2.x or pos1.y < pos2.y or pos1.z < pos2.z
   end
+end
+
+function Position.isInRange(pos1, pos2, minXRange, maxXRange, minYRange, maxYRange)
+  return (pos2.x >= pos1.x-minXRange and pos2.x <= pos1.x+maxXRange and pos2.y 
+    >= pos1.y-minYRange and pos2.y <= pos1.y+maxYRange and pos2.z == pos1.z);
 end

src/client/creature.h

@@ -116,6 +116,7 @@ public:
     bool isWalking() { return m_walking; }
     bool isRemoved() { return m_removed; }
     bool isInvisible() { return m_outfit.getCategory() == ThingCategoryEffect && m_outfit.getAuxId() == 13; }
+    bool isDead() { return m_healthPercent <= 0; }
     bool canBeSeen() { return !isInvisible() || isPlayer(); }
 
     bool isCreature() { return true; }

src/client/game.cpp

@@ -1597,10 +1597,12 @@ void Game::setClientVersion(int version)
 
 void Game::setAttackingCreature(const CreaturePtr& creature)
 {
-    CreaturePtr oldCreature = m_attackingCreature;
-    m_attackingCreature = creature;
+    if(creature != m_attackingCreature) {
+        CreaturePtr oldCreature = m_attackingCreature;
+        m_attackingCreature = creature;
 
-    g_lua.callGlobalField("g_game", "onAttackingCreatureChange", creature, oldCreature);
+        g_lua.callGlobalField("g_game", "onAttackingCreatureChange", creature, oldCreature);
+    }
 }
 
 void Game::setFollowingCreature(const CreaturePtr& creature)

src/client/luafunctions.cpp

@@ -376,6 +376,7 @@ void Client::registerLuaFunctions()
     g_lua.bindClassMemberFunction<Thing>("isTranslucent", &Thing::isTranslucent);
     g_lua.bindClassMemberFunction<Thing>("isFullGround", &Thing::isFullGround);
     g_lua.bindClassMemberFunction<Thing>("isMarketable", &Thing::isMarketable);
+    g_lua.bindClassMemberFunction<Thing>("isLyingCorpse", &Thing::isLyingCorpse);
     g_lua.bindClassMemberFunction<Thing>("getParentContainer", &Thing::getParentContainer);
     g_lua.bindClassMemberFunction<Thing>("getMarketData", &Thing::getMarketData);
 
@@ -457,6 +458,8 @@ void Client::registerLuaFunctions()
     g_lua.bindClassMemberFunction<Creature>("hideStaticSquare", &Creature::hideStaticSquare);
     g_lua.bindClassMemberFunction<Creature>("isWalking", &Creature::isWalking);
     g_lua.bindClassMemberFunction<Creature>("isInvisible", &Creature::isInvisible);
+    g_lua.bindClassMemberFunction<Creature>("isDead", &Creature::isDead);
+    g_lua.bindClassMemberFunction<Creature>("isRemoved", &Creature::isRemoved);
     g_lua.bindClassMemberFunction<Creature>("canBeSeen", &Creature::canBeSeen);
     g_lua.bindClassMemberFunction<Creature>("jump", &Creature::jump);