--- a/Spells.cpp	Tue Apr 01 23:20:15 2014 +0200
+++ b/Spells.cpp	Tue Apr 01 23:32:14 2014 +0200
@@ -355,51 +355,29 @@
 void __fastcall EventCastSpell(int uSpellID, int uSkillLevel, int uSkill, int fromx, int fromy, int fromz, int tox, int toy, int toz)//sub_448DF8
 {
   int v9; // esi@1
-  double v10; // st7@4
-  double v11; // st6@4
-  double v12; // st5@4
+  signed __int64 v10; // st7@4
+  signed __int64 v11; // st6@4
+  signed __int64 v12; // st5@4
   double v13; // st7@6
   int v14; // ST44_4@7
   uint skillMasteryPlusOne; // ebx@9
-  signed int v16; // edx@15
-  char *v17; // ecx@16
-  unsigned __int16 v18; // ax@20
-  char *v19; // ecx@31
-  int v20; // edx@35
-  signed int v21; // edx@37
-  char *v22; // ecx@38
-  unsigned __int16 v23; // ax@41
+  uint v16; // edx@15
   int i; // esi@42
-  signed int v25; // edx@55
-  char *v26; // ecx@56
-  unsigned __int16 v27; // ax@59
+  uint v25; // edx@55
   int j; // esi@60
-  signed int v29; // edx@66
-  char *v30; // ecx@67
   unsigned __int16 v31; // ax@70
-  //Player *v32; // eax@80
-  //unsigned __int16 v33; // si@85
-  int v34; // eax@96
-  int v35; // eax@97
   unsigned __int64 v36; // qax@99
   SpellBuff *v37; // ecx@99
   int v38; // esi@103
   signed __int64 v39; // qax@105
-  int v40; // ebx@108
-  int v41; // ebx@109
   int v42; // esi@111
   int v43; // ebx@111
-  int v44; // eax@117
-  //unsigned __int16 v45; // si@137
   unsigned __int16 v46; // [sp-8h] [bp-BCh]@99
   int v47; // [sp-4h] [bp-B8h]@35
   unsigned __int16 v48; // [sp-4h] [bp-B8h]@99
   int v49; // [sp+0h] [bp-B4h]@35
   int v50; // [sp+0h] [bp-B4h]@99
-  int v51; // [sp+4h] [bp-B0h]@35
   unsigned __int8 v52; // [sp+4h] [bp-B0h]@99
-  float v53; // [sp+14h] [bp-A0h]@4
-  float v54; // [sp+18h] [bp-9Ch]@4
   int v55; // [sp+28h] [bp-8Ch]@7
   unsigned int yaw; // [sp+30h] [bp-84h]@7
   int pitch; // [sp+34h] [bp-80h]@7
@@ -408,13 +386,12 @@
   //int spellnum_; // [sp+B0h] [bp-4h]@1
   //signed int levela; // [sp+BCh] [bp+8h]@80
   int a6_4; // [sp+C8h] [bp+14h]@117
-  float a7a; // [sp+CCh] [bp+18h]@6
   int a7c; // [sp+CCh] [bp+18h]@29
   int a7d; // [sp+CCh] [bp+18h]@55
-  float a8a; // [sp+D0h] [bp+1Ch]@6
+  signed __int64 xSquared; // [sp+D0h] [bp+1Ch]@6
   int a8b; // [sp+D0h] [bp+1Ch]@37
   int a8c; // [sp+D0h] [bp+1Ch]@55
-  float toza; // [sp+D4h] [bp+20h]@6
+  signed __int64 ySquared; // [sp+D4h] [bp+20h]@6
 
   v9 = 0;
   skillMasteryPlusOne = uSkillLevel + 1;
@@ -422,32 +399,31 @@
   v60 = 0;
   if ( tox || toy || toz )
   {
-    v10 = (double)tox - (double)fromx;
-    v11 = (double)toy - (double)fromy;
-    v12 = (double)toz;
+    v10 = tox - fromx;
+    v11 = toy - fromy;
+    v12 = toz - fromz;
   }
   else
   {
-    v10 = (double)pParty->vPosition.x - (double)fromx;
-    v11 = (double)pParty->vPosition.y - (double)fromy;
-    v12 = (double)(pParty->vPosition.z + pParty->sEyelevel);
+    v10 = pParty->vPosition.x - fromx;
+    v11 = pParty->vPosition.y - fromy;
+    v12 = (pParty->vPosition.z + pParty->sEyelevel) - fromz;
   }
-  a7a = v12 - (double)fromz;
-  toza = v11 * v11;
-  a8a = v10 * v10;
-  v13 = sqrt(a7a * a7a + a8a + toza);
+  v13 = sqrt(v10 * v10 + v11 * v11 + v12 * v12);
   if ( v13 <= 1.0 )
   {
-    LOBYTE(v55) = 1;
+    v55 = 1;
     yaw = 0;
     pitch = 0;
   }
   else
   {
-    v55 = (signed __int64)v13;
-    v14 = (signed __int64)sqrt(a8a + toza);
-    yaw = stru_5C6E00->Atan2((signed __int64)v10, (signed __int64)v11);
-    pitch = stru_5C6E00->Atan2(v14, (signed __int64)a7a);
+    v55 = (int)v13;
+    ySquared = v11 * v11;
+    xSquared = v10 * v10;
+    v14 = (int)sqrt(xSquared + ySquared);
+    yaw = stru_5C6E00->Atan2((int)v10, (int)v11);
+    pitch = stru_5C6E00->Atan2(v14, (int)v12);
   }
   Assert(skillMasteryPlusOne > 0 && skillMasteryPlusOne <= 4, "Invalid mastery level");
 
@@ -606,7 +582,7 @@
       if ( uCurrentlyLoadedLevelType == LEVEL_Indoor )
         return;
       a1.stru_24.Reset();
-      v29 = 0;
+      v31 = 0;
       a1.spell_id = uSpellID;
       a1.spell_level = uSkill;
       a1.spell_skill = skillMasteryPlusOne;
@@ -815,7 +791,7 @@
 //----- (00427769) --------------------------------------------------------
 bool sub_427769_isSpellQuickCastableOnShiftClick(unsigned int uSpellID)
 {
-  return ( pSpellDatas[uSpellID].stats & 0xC );
+  return ( pSpellDatas[uSpellID].stats & 0xC ) != 0;
 }
 //----- (0043AFE3) --------------------------------------------------------
 int _43AFE3_calc_spell_damage(int spellId, int spellLevel, signed int skillMastery, int currentHp)