PARALLACTION: implement most of BRA 'swap' command.

I left out follower adjustments (need to find where it's used),
and mouse pointer swap.

engines/parallaction/exec_br.cpp

@@ -272,7 +272,29 @@ DECLARE_COMMAND_OPCODE(scroll) {
 
 
 DECLARE_COMMAND_OPCODE(swap) {
-	warning("Parallaction_br::cmdOp_swap not yet implemented");
+	warning("Parallaction_br::cmdOp_swap does not handle a follower yet");
+
+	/*
+		TODO:
+		- fixup follower
+		- change mouse pointer
+	*/
+
+	const char *newCharacterName = ctxt._cmd->_string.c_str();
+	AnimationPtr newCharacterAnimation = _vm->_location.findAnimation(newCharacterName);
+	AnimationPtr oldCharaterAnimation = _vm->_char._ani;
+
+	strlcpy(oldCharaterAnimation->_name, _vm->_char.getName(), ZONENAME_LENGTH);
+	_vm->_char.setName(newCharacterName);
+
+	_vm->_char._ani = newCharacterAnimation;
+	_vm->_char._talk = _vm->_disk->loadTalk(newCharacterName);
+	strlcpy(_vm->_char._ani->_name, "yourself", ZONENAME_LENGTH);
+
+	_vm->linkUnlinkedZoneAnimations();
+
+	_vm->_inventory = _vm->findInventory(newCharacterName);
+	_vm->_inventoryRenderer->setInventory(_vm->_inventory);
 }
 
 

engines/parallaction/parallaction.h

@@ -512,6 +512,7 @@ public:
 	void clearSubtitles();
 
 	Inventory *findInventory(const char *name);
+	void linkUnlinkedZoneAnimations();
 
 	void testCounterCondition(const Common::String &name, int op, int value);
 	void restoreOrSaveZoneFlags(ZonePtr z, bool restore);

engines/parallaction/parallaction_br.cpp

@@ -456,7 +456,14 @@ void Parallaction_br::loadProgram(AnimationPtr a, const char *filename) {
 	return;
 }
 
-
+void Parallaction_br::linkUnlinkedZoneAnimations() {
+	ZoneList::iterator zit = _location._zones.begin();
+	for ( ; zit != _location._zones.end(); ++zit) {
+		if ((*zit)->_flags & kFlagsActive) {
+			(*zit)->_linkedAnim = _location.findAnimation((*zit)->_linkedName.c_str());
+		}
+	}
+}
 
 void Parallaction_br::changeCharacter(const char *name) {