more work on `operate.cc`

5 files changed, 203 insertions, 464 deletions

diff --git a/Makefile b/Makefile
index 88234fe..3569eba 100644
--- a/Makefile
+++ b/Makefile
@@ -16,7 +16,7 @@ endif
 HEADERS = $(SRCDIR)/common.hh $(SRCDIR)/config.hh $(SRCDIR)/connection.hh $(SRCDIR)/containers.hh $(SRCDIR)/cr.hh $(SRCDIR)/enums.hh $(SRCDIR)/info.hh $(SRCDIR)/magic.hh $(SRCDIR)/map.hh $(SRCDIR)/objects.hh $(SRCDIR)/operate.hh $(SRCDIR)/script.hh $(SRCDIR)/stubs.hh $(SRCDIR)/thread.hh
 
 $(BUILDDIR)/$(OUTPUTEXE): $(BUILDDIR)/config.obj $(BUILDDIR)/cract.obj $(BUILDDIR)/crcombat.obj $(BUILDDIR)/crmain.obj $(BUILDDIR)/crplayer.obj $(BUILDDIR)/crskill.obj $(BUILDDIR)/info.obj $(BUILDDIR)/magic.obj $(BUILDDIR)/main.obj $(BUILDDIR)/map.obj $(BUILDDIR)/objects.obj $(BUILDDIR)/operate.obj $(BUILDDIR)/script.obj $(BUILDDIR)/shm.obj $(BUILDDIR)/strings.obj $(BUILDDIR)/thread.obj $(BUILDDIR)/time.obj $(BUILDDIR)/util.obj
-	$(CC) -c $(CFLAGS) $(LFLAGS) -o $@ $^
+	echo $(CC) $(CFLAGS) $(LFLAGS) -o $@ $^
 
 $(BUILDDIR)/config.obj: $(SRCDIR)/config.cc $(HEADERS)
 	@mkdir -p $(@D)
diff --git a/reference/game.c b/reference/game.c
index 3686e32..b68c771 100644
--- a/reference/game.c
+++ b/reference/game.c
@@ -18375,451 +18375,6 @@ void __static_initialization_and_destruction_0(int __initialize_p,int __priority
     return;

 }

 

-void CheckTopMultiuseObject(ulong CreatureID,Object *Obj)

-

-{

-    bool bVar1;

-    bool bVar2;

-    undefined4 *puVar3;

-    Object *pOVar4;

-    Object local_7c [4];

-    Object local_6c [4];

-    Object local_5c [4];

-    Object local_4c;

-    Object Help;

-    Object local_3c;

-    Object Best;

-    Object local_2c;

-    Object Con;

-    

-                    // try { // try from 0808f2cb to 0808f4eb has its CatchHandler @ 0808f503

-    bVar1 = Object::exists(Obj);

-    if (!bVar1) {

-        error("CheckTopMultiuseObject: Objekt existiert nicht.\n");

-        puVar3 = (undefined4 *)__cxa_allocate_exception(4);

-        *puVar3 = 0xffffffff;

-LAB_0808f43d:

-                    // WARNING: Subroutine does not return

-        __cxa_throw(puVar3,&RESULT::typeinfo,0);

-    }

-    if ((CreatureID != 0) && (bVar1 = IsCreaturePlayer(CreatureID), bVar1)) {

-        Object::getContainer(&local_2c);

-        Object::getObjectType(&local_3c);

-        if (local_3c.ObjectID == 0) {

-            pOVar4 = local_5c;

-            local_3c.ObjectID = NONE.ObjectID;

-            local_5c[0].ObjectID = local_2c.ObjectID;

-            GetFirstContainerObject(&local_4c);

-            local_5c[0].ObjectID = NONE.ObjectID;

-            if (local_4c.ObjectID != NONE.ObjectID) {

-                do {

-                    local_6c[0].ObjectID = NONE.ObjectID;

-                    bVar1 = false;

-                    local_5c[0].ObjectID = NONE.ObjectID;

-                    if (local_3c.ObjectID == NONE.ObjectID) {

-LAB_0808f36d:

-                        bVar1 = true;

-                    }

-                    else {

-                        Object::getObjectType(local_5c);

-                        bVar2 = ObjectType::getFlag((ObjectType *)local_5c,LIQUIDPOOL);

-                        if (!bVar2) goto LAB_0808f36d;

-                    }

-                    if (bVar1) {

-                        local_7c[0].ObjectID = local_4c.ObjectID;

-                        local_3c.ObjectID = local_4c.ObjectID;

-                        local_5c[0].ObjectID = local_4c.ObjectID;

-                    }

-                    Object::getObjectType(local_7c);

-                    pOVar4 = (Object *)0x9;

-                    bVar1 = ObjectType::getFlag((ObjectType *)local_7c,FORCEUSE);

-                    if (bVar1) break;

-                    Object::getObjectType(local_7c);

-                    bVar1 = ObjectType::getFlag((ObjectType *)local_7c,BANK);

-                    if (!bVar1) {

-                        Object::getObjectType(local_7c);

-                        bVar1 = ObjectType::getFlag((ObjectType *)local_7c,CLIP);

-                        if (!bVar1) {

-                            Object::getObjectType(local_7c);

-                            bVar1 = ObjectType::getFlag((ObjectType *)local_7c,BOTTOM);

-                            if (!bVar1) {

-                                Object::getObjectType(local_7c);

-                                pOVar4 = (Object *)0x3;

-                                bVar1 = ObjectType::getFlag((ObjectType *)local_7c,TOP);

-                                if (!bVar1) break;

-                            }

-                        }

-                    }

-                    pOVar4 = &local_4c;

-                    Object::getNextObject(local_6c);

-                    local_7c[0].ObjectID = local_6c[0].ObjectID;

-                    local_4c.ObjectID = local_6c[0].ObjectID;

-                    local_5c[0].ObjectID = NONE.ObjectID;

-                } while (local_6c[0].ObjectID != NONE.ObjectID);

-            }

-            local_7c[0].ObjectID = local_3c.ObjectID;

-            local_6c[0].ObjectID = local_3c.ObjectID;

-            if (Obj->ObjectID != local_3c.ObjectID) {

-                puVar3 = (undefined4 *)__cxa_allocate_exception(4,pOVar4);

-                *puVar3 = 1;

-                goto LAB_0808f43d;

-            }

-        }

-    }

-    return;

-}

-

-

-

-void CheckMoveObject(ulong CreatureID,Object *Obj,bool Take)

-

-{

-    bool bVar1;

-    undefined4 *puVar2;

-    ulong uVar3;

-    TCreature *pTVar4;

-    int iVar5;

-    Object *pOVar6;

-    Object OStack_2c;

-    bool Take_local;

-    

-    if (CreatureID == 0) {

-        return;

-    }

-    OStack_2c = (Object)Obj->ObjectID;

-                    // try { // try from 0808f567 to 0808f674 has its CatchHandler @ 0808f6a7

-    bVar1 = ObjectAccessible(CreatureID,&stack0xffffffd4,1);

-    if (!bVar1) {

-        puVar2 = (undefined4 *)__cxa_allocate_exception(4);

-        *puVar2 = 1;

-        goto LAB_0808f5ef;

-    }

-    Object::getObjectType(&stack0xffffffd4);

-    bVar1 = ObjectType::getFlag((ObjectType *)&stack0xffffffd4,UNMOVE);

-    if (!bVar1) {

-        pOVar6 = Obj;

-        Object::getObjectType(&stack0xffffffd4);

-        if ((OStack_2c.ObjectID == 99) && (uVar3 = Object::getCreatureID(Obj), uVar3 != CreatureID))

-        {

-            OStack_2c = (Object)Obj->ObjectID;

-            pTVar4 = GetCreature(&stack0xffffffd4);

-            if (pTVar4 == (TCreature *)0x0) {

-                error("CheckMoveObject: Kreatur existiert nicht.\n",pOVar6);

-                puVar2 = (undefined4 *)__cxa_allocate_exception(4);

-                *puVar2 = 0xffffffff;

-                goto LAB_0808f5ef;

-            }

-            bVar1 = GetRaceUnpushable(pTVar4->Race);

-            if ((bVar1) &&

-               ((WorldType != NON_PVP ||

-                (iVar5 = (*pTVar4->_vptr_TCreature[4])(pTVar4), (char)iVar5 == '\0'))))

-            goto LAB_0808f655;

-        }

-        if (Take) {

-            Object::getObjectType(&stack0xffffffd4);

-            bVar1 = ObjectType::getFlag((ObjectType *)&stack0xffffffd4,TAKE);

-            if (!bVar1) {

-                puVar2 = (undefined4 *)__cxa_allocate_exception(4);

-                *puVar2 = 3;

-                goto LAB_0808f5ef;

-            }

-        }

-        return;

-    }

-LAB_0808f655:

-    puVar2 = (undefined4 *)__cxa_allocate_exception(4);

-    *puVar2 = 2;

-LAB_0808f5ef:

-                    // WARNING: Subroutine does not return

-    __cxa_throw(puVar2,&RESULT::typeinfo,0);

-}

-

-

-

-void CheckMapDestination(ulong CreatureID,Object *Obj,Object *MapCon)

-

-{

-    bool bVar1;

-    bool bVar2;

-    TCreature *pTVar3;

-    uint uVar4;

-    int iVar5;

-    undefined4 *puVar6;

-    int *piVar7;

-    int iVar8;

-    Object *pOVar9;

-    Object *pOVar10;

-    int iVar11;

-    int iVar12;

-    int *y_00;

-    int *z_00;

-    undefined4 uVar13;

-    TCreature *cr_1;

-    TCreature *cr;

-    int local_44;

-    int sx;

-    int sy;

-    int sz;

-    int x;

-    int y;

-    int z;

-    

-    if (CreatureID == 0) {

-        return;

-    }

-    z = MapCon->ObjectID;

-                    // try { // try from 0808f713 to 0808fe64 has its CatchHandler @ 0808fe78

-    GetObjectCoordinates((Object *)&z,&sz,&x,&y);

-    Object::getObjectType((Object *)&z);

-    piVar7 = (int *)y;

-    if (z != 99) {

-        bVar1 = false;

-        z_00 = (int *)0x0;

-        y_00 = (int *)y;

-        bVar2 = CoordinateFlag();

-        if (bVar2) {

-            z_00 = (int *)0x20;

-            bVar1 = CoordinateFlag();

-            bVar1 = !bVar1;

-            y_00 = piVar7;

-        }

-        if (bVar1) goto LAB_0808f731;

-        Object::getObjectType((Object *)&z);

-        pOVar9 = (Object *)0x20;

-        bVar1 = ObjectType::getFlag((ObjectType *)&z,UNPASS);

-        if (!bVar1) {

-            bVar1 = false;

-            bVar2 = CoordinateFlag();

-            if (bVar2) {

-                bVar1 = CoordinateFlag();

-                bVar1 = !bVar1;

-            }

-            y_00 = (int *)y;

-            pOVar9 = (Object *)x;

-            if (bVar1) goto LAB_0808f731;

-            bVar1 = false;

-            z_00 = (int *)0x2a;

-            pOVar10 = (Object *)x;

-            piVar7 = (int *)y;

-            bVar2 = CoordinateFlag();

-            if (bVar2) {

-LAB_0808fd7b:

-                y_00 = piVar7;

-                pOVar9 = pOVar10;

-                bVar1 = true;

-            }

-            else {

-                z_00 = (int *)0x2b;

-                bVar2 = CoordinateFlag();

-                pOVar10 = pOVar9;

-                piVar7 = y_00;

-                if (bVar2) goto LAB_0808fd7b;

-            }

-            if (bVar1) {

-                Object::getObjectType((Object *)&z);

-                pOVar9 = (Object *)0x29;

-                bVar1 = ObjectType::getFlag((ObjectType *)&z,HANG);

-                if (bVar1) {

-                    z_00 = (int *)0x29;

-                    pOVar9 = (Object *)x;

-                    y_00 = (int *)y;

-                    bVar1 = CoordinateFlag();

-                    if (!bVar1) goto LAB_0808f731;

-                }

-            }

-        }

-LAB_0808fb60:

-        puVar6 = (undefined4 *)__cxa_allocate_exception(4,pOVar9,y_00,z_00);

-        *puVar6 = 4;

-        goto LAB_0808f965;

-    }

-LAB_0808f731:

-    z = Obj->ObjectID;

-    z_00 = &sy;

-    y_00 = &sx;

-    GetObjectCoordinates((Object *)&z,&local_44,y_00,z_00);

-    pOVar9 = Obj;

-    Object::getObjectType((Object *)&z);

-    if (z == 99) {

-        z = Obj->ObjectID;

-        pTVar3 = GetCreature((Object *)&z);

-        uVar4 = sz - pTVar3->posx;

-        if (0x7fffffff < uVar4) {

-            uVar4 = -uVar4;

-        }

-        if ((int)uVar4 < 2) {

-            uVar4 = x - pTVar3->posy;

-            if (0x7fffffff < uVar4) {

-                uVar4 = -uVar4;

-            }

-            if ((int)uVar4 < 2) {

-                piVar7 = (int *)pTVar3->posz;

-                uVar4 = y - (int)piVar7;

-                if (0x7fffffff < uVar4) {

-                    uVar4 = -uVar4;

-                }

-                if ((int)uVar4 < 2) {

-                    if ((int *)(y + 1) == piVar7) {

-                        pOVar9 = (Object *)pTVar3->posy;

-                        y_00 = piVar7;

-                        iVar5 = GetHeight();

-                        if (iVar5 < 0x18) goto LAB_0808fb60;

-                        piVar7 = (int *)pTVar3->posz;

-                    }

-                    if (y == (int)piVar7 + 1) {

-                        pOVar9 = (Object *)x;

-                        y_00 = (int *)y;

-                        iVar5 = GetHeight();

-                        if (iVar5 < 0x18) {

-                            puVar6 = (undefined4 *)__cxa_allocate_exception(4,pOVar9,y_00);

-                            *puVar6 = 0x2c;

-                            goto LAB_0808f965;

-                        }

-                        piVar7 = (int *)pTVar3->posz;

-                    }

-                    if ((pTVar3->Type != MONSTER) || ((int *)y == piVar7)) {

-                        iVar5 = (*pTVar3->_vptr_TCreature[3])

-                                          (pTVar3,sz,x,y,1,(uint)((int *)y != piVar7));

-                        if ((char)iVar5 == '\0') {

-                            uVar13 = 0x34;

-                            puVar6 = (undefined4 *)__cxa_allocate_exception(4);

-                            if (CreatureID != pTVar3->ID) {

-                                uVar13 = 4;

-                            }

-                            *puVar6 = uVar13;

-                            goto LAB_0808f965;

-                        }

-                        if (CreatureID != pTVar3->ID) {

-                            z_00 = (int *)0x24;

-                            pOVar9 = (Object *)x;

-                            y_00 = (int *)y;

-                            bVar1 = CoordinateFlag();

-                            if (bVar1) goto LAB_0808fb60;

-                            if (((CreatureID != pTVar3->ID) && (bVar1 = IsProtectionZone(), bVar1))

-                               && (iVar5 = x, iVar12 = y, bVar1 = IsProtectionZone(), !bVar1)) {

-                                puVar6 = (undefined4 *)__cxa_allocate_exception(4,iVar5,iVar12,z_00)

-                                ;

-                                *puVar6 = 0x2f;

-                                goto LAB_0808f965;

-                            }

-                        }

-                        goto LAB_0808f8b2;

-                    }

-                }

-            }

-        }

-        goto LAB_0808fa8d;

-    }

-    Object::getObjectType((Object *)&z);

-    bVar1 = ObjectType::getFlag((ObjectType *)&z,TAKE);

-    if (!bVar1) {

-        z = MapCon->ObjectID;

-        y_00 = (int *)0x2;

-        pOVar9 = (Object *)&z;

-        bVar1 = ObjectInRange(CreatureID,(Object *)&z,2);

-        if (!bVar1) goto LAB_0808fa8d;

-    }

-LAB_0808f8b2:

-    Object::getObjectType((Object *)&z);

-    bVar1 = ObjectType::getFlag((ObjectType *)&z,HANG);

-    iVar12 = y;

-    iVar5 = x;

-    if (bVar1) {

-        bVar1 = false;

-        uVar13 = 0x2a;

-        iVar8 = x;

-        iVar11 = y;

-        bVar2 = CoordinateFlag();

-        if (bVar2) {

-LAB_0808f908:

-            iVar12 = iVar11;

-            iVar5 = iVar8;

-            bVar1 = true;

-        }

-        else {

-            uVar13 = 0x2b;

-            bVar2 = CoordinateFlag();

-            iVar8 = iVar5;

-            iVar11 = iVar12;

-            if (bVar2) goto LAB_0808f908;

-        }

-        if (bVar1) {

-            pTVar3 = GetCreature(CreatureID);

-            if (pTVar3 == (TCreature *)0x0) {

-                error(&DAT_080ff140,iVar5,iVar12,uVar13);

-                puVar6 = (undefined4 *)__cxa_allocate_exception(4);

-                *puVar6 = 0xffffffff;

-                goto LAB_0808f965;

-            }

-            if (pTVar3->posz < y) {

-                puVar6 = (undefined4 *)__cxa_allocate_exception(4);

-                *puVar6 = 0x18;

-                goto LAB_0808f965;

-            }

-            if (y < pTVar3->posz) {

-                puVar6 = (undefined4 *)__cxa_allocate_exception(4);

-                *puVar6 = 0x17;

-                goto LAB_0808f965;

-            }

-            z_00 = (int *)0x2a;

-            pOVar9 = (Object *)x;

-            y_00 = (int *)y;

-            bVar1 = CoordinateFlag();

-            if (bVar1) {

-                bVar1 = false;

-                if ((x <= pTVar3->posy) && (pTVar3->posy <= x + 1)) {

-                    bVar1 = true;

-                }

-                if (bVar1) {

-                    bVar1 = false;

-                    if ((sz + -1 <= pTVar3->posx) && (pTVar3->posx <= sz + 1)) {

-                        bVar1 = true;

-                    }

-                    if (bVar1) goto LAB_0808fa1f;

-                }

-            }

-            else {

-LAB_0808fa1f:

-                z_00 = (int *)0x2b;

-                pOVar9 = (Object *)x;

-                bVar1 = CoordinateFlag();

-                if (!bVar1) {

-                    return;

-                }

-                bVar1 = false;

-                if ((sz <= pTVar3->posx) && (pTVar3->posx <= sz + 1)) {

-                    bVar1 = true;

-                }

-                y_00 = (int *)y;

-                if (bVar1) {

-                    bVar1 = false;

-                    if ((x + -1 <= pTVar3->posy) && (pTVar3->posy <= x + 1)) {

-                        bVar1 = true;

-                    }

-                    if (bVar1) {

-                        return;

-                    }

-                }

-            }

-LAB_0808fa8d:

-            puVar6 = (undefined4 *)__cxa_allocate_exception(4,pOVar9,y_00,z_00);

-            *puVar6 = 5;

-            goto LAB_0808f965;

-        }

-    }

-    bVar1 = ThrowPossible(local_44,sx,sy,sz,x,y,1);

-    if (bVar1) {

-        return;

-    }

-    puVar6 = (undefined4 *)__cxa_allocate_exception(4);

-    *puVar6 = 7;

-LAB_0808f965:

-                    // WARNING: Subroutine does not return

-    __cxa_throw(puVar6,&RESULT::typeinfo,0);

-}

-

-

-

 void CheckMapPlace(ulong CreatureID,ObjectType *Type,Object *MapCon)

 

 {

diff --git a/src/cract.cc b/src/cract.cc
index 325fbdc..15fdf66 100644
--- a/src/cract.cc
+++ b/src/cract.cc
@@ -986,10 +986,10 @@ void TCreature::ToDoWait(int Delay){
 }
 
 void TCreature::ToDoGo(int DestX, int DestY, int DestZ, bool MustReach, int MaxSteps){
-	if(this->posz < DestZ){
-		throw DOWNSTAIRS;
-	}else if(this->posz > DestZ){
+	if(this->posz > DestZ){
 		throw UPSTAIRS;
+	}else if(this->posz < DestZ){
+		throw DOWNSTAIRS;
 	}
 
 	if(this->LockToDo){
diff --git a/src/info.cc b/src/info.cc
index d15f470..3cdfe02 100644
--- a/src/info.cc
+++ b/src/info.cc
@@ -805,8 +805,8 @@ bool SearchFreeField(int *x, int *y, int *z, int Distance, uint16 HouseID, bool
 	return false;
 }
 
-// TODO(fusion): This is a helper function for `SearchLoginField`. Perhaps we
-// should try to merge it there?
+// NOTE(fusion): This is a helper function for `SearchLoginField` and improves
+// the readability of an otherwise convoluted function.
 static bool LoginPossible(int x, int y, int z, uint16 HouseID, bool Player){
 	Object Obj = GetFirstObject(x, y, z);
 	if(Obj == NONE){
diff --git a/src/operate.cc b/src/operate.cc
index 603cc7f..34df0a7 100644
--- a/src/operate.cc
+++ b/src/operate.cc
@@ -1,4 +1,5 @@
 #include "operate.hh"
+#include "config.hh"
 #include "info.hh"
 
 #include "stubs.hh"
@@ -333,13 +334,7 @@ void CheckTopMoveObject(uint32 CreatureID, Object Obj, Object Ignore){
 				BestIsCreature = HelpType.isCreatureContainer();
 			}
 
-			// TODO(fusion): This is probably some inlined function to check whether
-			// an object has a low stack priority.
-			if(!HelpType.getFlag(BANK)
-					&& !HelpType.getFlag(CLIP)
-					&& !HelpType.getFlag(BOTTOM)
-					&& !HelpType.getFlag(TOP)
-					&& !HelpType.isCreatureContainer()){
+			if(GetObjectPriority(Help) == PRIORITY_LOW){
 				break;
 			}
 		}
@@ -375,15 +370,43 @@ void CheckTopUseObject(uint32 CreatureID, Object Obj){
 			Best = Help;
 		}
 
-		if(HelpType.getFlag(FORCEUSE)){
+		if(HelpType.getFlag(FORCEUSE) || GetObjectPriority(Help) == PRIORITY_LOW){
 			break;
 		}
 
-		if(!HelpType.getFlag(BANK)
-				&& !HelpType.getFlag(CLIP)
-				&& !HelpType.getFlag(BOTTOM)
-				&& !HelpType.getFlag(TOP)
-				&& !HelpType.isCreatureContainer()){
+		Help = Help.getNextObject();
+	}
+
+	if(Obj != Best){
+		throw NOTACCESSIBLE;
+	}
+}
+
+void CheckTopMultiuseObject(uint32 CreatureID, Object Obj){
+	if(!Obj.exists()){
+		error("CheckTopMultiuseObject: Objekt existiert nicht.\n");
+		throw ERROR;
+	}
+
+	if(CreatureID == 0 || !IsCreaturePlayer(CreatureID)){
+		return;
+	}
+
+	Object Con = Obj.getContainer();
+	ObjectType ConType = Con.getObjectType();
+	if(!ConType.isMapContainer()){
+		return;
+	}
+
+	Object Best = NONE;
+	Object Help = GetFirstContainerObject(Con);
+	while(Help != NONE){
+		ObjectType HelpType = Help.getObjectType();
+		if(Best == NONE || !HelpType.getFlag(LIQUIDPOOL)){
+			Best = Help;
+		}
+
+		if(HelpType.getFlag(FORCEUSE) || GetObjectPriority(Help) >= PRIORITY_CREATURE){
 			break;
 		}
 
@@ -395,6 +418,167 @@ void CheckTopUseObject(uint32 CreatureID, Object Obj){
 	}
 }
 
+void CheckMoveObject(uint32 CreatureID, Object Obj, bool Take){
+	if(CreatureID == 0){
+		return;
+	}
+
+	if(!ObjectAccessible(CreatureID, Obj, 1)){
+		throw NOTACCESSIBLE;
+	}
+
+	ObjectType ObjType = Obj.getObjectType();
+	if(ObjType.getFlag(UNMOVE)){
+		throw NOTMOVABLE;
+	}
+
+	if(ObjType.isCreatureContainer() && Obj.getCreatureID() != CreatureID){
+		TCreature *MovingCreature = GetCreature(Obj);
+		if(MovingCreature == NULL){
+			error("CheckMoveObject: Kreatur existiert nicht.\n");
+			throw ERROR;
+		}
+
+		if(GetRaceUnpushable(MovingCreature->Race) && (WorldType != NON_PVP || !MovingCreature->IsPeaceful())){
+			throw NOTMOVABLE;
+		}
+	}
+
+	if(Take && !ObjType.getFlag(TAKE)){
+		throw NOTTAKABLE;
+	}
+}
+
+// NOTE(fusion): This is a helper function for `CheckMapDestination` and improves
+// the readability of an otherwise convoluted function.
+static bool IsMapDestinationBlocked(int DestX, int DestY, int DestZ, ObjectType Type){
+	if(Type.isCreatureContainer()){
+		return false;
+	}
+
+	bool HasBank = CoordinateFlag(DestX, DestY, DestZ, BANK);
+	if(HasBank && !CoordinateFlag(DestX, DestY, DestZ, UNPASS)){
+		return false;
+	}
+
+	if(!Type.getFlag(UNPASS)){
+		if(HasBank && !CoordinateFlag(DestX, DestY, DestZ, UNLAY)){
+			return false;
+		}
+
+		if(CoordinateFlag(DestX, DestY, DestZ, HOOKSOUTH) || CoordinateFlag(DestX, DestY, DestZ, HOOKEAST)){
+			if(Type.getFlag(HANG) && !CoordinateFlag(DestX, DestY, DestZ, HANG)){
+				return true;
+			}
+		}
+	}
+
+	return true;
+}
+
+void CheckMapDestination(uint32 CreatureID, Object Obj, Object MapCon){
+	if(CreatureID == 0){
+		return;
+	}
+
+	int DestX, DestY, DestZ;
+	ObjectType ObjType = Obj.getObjectType();
+	GetObjectCoordinates(MapCon, &DestX, &DestY, &DestZ);
+	if(IsMapDestinationBlocked(DestX, DestY, DestZ, ObjType)){
+		throw NOROOM;
+	}
+
+	int OrigX, OrigY, OrigZ;
+	GetObjectCoordinates(Obj, &OrigX, &OrigY, &OrigZ);
+	if(ObjType.isCreatureContainer()){
+		if(std::abs(OrigX - DestX) > 1
+				|| std::abs(OrigY - DestY) > 1
+				|| std::abs(OrigZ - DestZ) > 1){
+			throw OUTOFRANGE;
+		}
+
+		if(DestZ == (OrigZ - 1)){
+			if(GetHeight(OrigX, OrigY, OrigZ) < 24){ // JUMP_HEIGHT ?
+				throw NOROOM;
+			}
+		}else if(DestZ == (OrigZ + 1)){
+			if(GetHeight(DestX, DestY, DestZ) < 24){ // JUMP_HEIGHT ?
+				throw NOWAY;
+			}
+		}
+
+		// TODO(fusion): Should probably check if moving creature is NULL?
+		TCreature *MovingCreature = GetCreature(Obj);
+		if(OrigZ == DestZ || MovingCreature->Type != MONSTER){
+			if(!MovingCreature->MovePossible(DestX, DestY, DestZ, true, OrigZ != DestZ)){
+				if(CreatureID == MovingCreature->ID){
+					throw MOVENOTPOSSIBLE;
+				}else{
+					throw NOROOM;
+				}
+			}
+
+			if(CreatureID != MovingCreature->ID){
+				if(CoordinateFlag(DestX, DestY, DestZ, AVOID)){
+					throw NOROOM;
+				}
+
+				if(IsProtectionZone(OrigX, OrigY, OrigZ) && !IsProtectionZone(DestX, DestY, DestZ)){
+					throw PROTECTIONZONE;
+				}
+			}
+		}
+	}else{
+		if(!ObjType.getFlag(TAKE) && !ObjectInRange(CreatureID, MapCon, 2)){
+			throw OUTOFRANGE;
+		}
+	}
+
+	// TODO(fusion): This looks awfully similar to `ObjectAccessible` outside
+	// from the exceptions and floor check.
+	if(ObjType.getFlag(HANG)){
+		bool HookSouth = CoordinateFlag(DestX, DestY, DestZ, HOOKSOUTH);
+		bool HookEast = CoordinateFlag(DestX, DestY, DestZ, HOOKEAST);
+		if(HookSouth || HookEast){
+			TCreature *Creature = GetCreature(CreatureID);
+			if(Creature == NULL){
+				error("CheckMapDestination: Ausführende Kreatur existiert nicht.\n");
+				throw ERROR;
+			}
+
+			if(Creature->posz > DestZ){
+				throw UPSTAIRS;
+			}else if(Creature->posz < DestZ){
+				throw DOWNSTAIRS;
+			}
+
+			if(HookSouth){
+				if(Creature->posy < DestY
+						|| Creature->posy > (DestY + 1)
+						|| Creature->posx < (DestX - 1)
+						|| Creature->posx > (DestX + 1)){
+					throw OUTOFRANGE;
+				}
+			}
+			
+			if(HookEast){
+				if(Creature->posx < DestX
+						|| Creature->posx > (DestX + 1)
+						|| Creature->posy < (DestY - 1)
+						|| Creature->posy > (DestY + 1)){
+					throw OUTOFRANGE;
+				}
+			}
+
+			return;
+		}
+	}
+
+	if(!ThrowPossible(OrigX, OrigY, OrigZ, DestX, DestY, DestZ, 1)){
+		throw CANNOTTHROW;
+	}
+}
+
 // TODO(fusion): This could have been a simple return value.
 void CheckContainerDestination(Object Obj, Object Con){
 	Object Help = Con;