Check if a zone type is NULL for both ITE and IHNM, as it's done in the original. This fixes the crash in IHNM when entering the second floor of the zeppelin and the crash in ITE when interacting with the bowl in the tunnel, outside the prison. Removed the two relevant hacks

svn-id: r27108

1 files changed, 9 insertions, 15 deletions

diff --git a/engines/saga/sfuncs.cpp b/engines/saga/sfuncs.cpp
index bebacc39d3..fad2a26247 100644
--- a/engines/saga/sfuncs.cpp
+++ b/engines/saga/sfuncs.cpp
@@ -386,11 +386,13 @@ void Script::sfScriptDoAction(SCRIPTFUNC_PARAMS) {
 			break;
 		case kGameObjectHitZone:
 		case kGameObjectStepZone:
-			if (objectTypeId(objectId) == kGameObjectHitZone) {
+			if (objectTypeId(objectId) == NULL)
+				return;
+			else if (objectTypeId(objectId) == kGameObjectHitZone)
 				hitZone = _vm->_scene->_objectMap->getHitZone(objectIdToIndex(objectId));
-			} else {
+			else
 				hitZone = _vm->_scene->_actionMap->getHitZone(objectIdToIndex(objectId));
-			}
+
 			scriptEntryPointNumber = hitZone->getScriptNumber();
 			moduleNumber = _vm->_scene->getScriptModuleNumber();
 			break;
@@ -729,20 +731,12 @@ void Script::sfEnableZone(SCRIPTFUNC_PARAMS) {
 	int16 flag = thread->pop();
 	HitZone *hitZone;
 
-	if (objectTypeId(objectId) == kGameObjectHitZone) {
-		hitZone = _vm->_scene->_objectMap->getHitZone(objectIdToIndex(objectId));
-	} else if (_vm->getGameType() == GType_IHNM && _vm->_scene->currentChapterNumber() == 1 &&
-			   _vm->_scene->currentSceneNumber() == 14) {
-		// HACK: Don't disable the requested hitzone in room 14 in chapter 1 (Gorrister) of IHNM
-		// Apparently, this is used in that room to disable the tear at the very end of the
-		// corridor. This fixes the staircase in scenes 4 and 14
-		// FIXME: Remove this hack
-		warning("HACK: Prevent crash at staircase with Gorrister");
-		// Do nothing
+	if (objectTypeId(objectId) == NULL)
 		return;
-	} else {
+	else if (objectTypeId(objectId) == kGameObjectHitZone)
+		hitZone = _vm->_scene->_objectMap->getHitZone(objectIdToIndex(objectId));
+	else
 		hitZone = _vm->_scene->_actionMap->getHitZone(objectIdToIndex(objectId));
-	}
 
 	if (flag) {
 		hitZone->setFlag(kHitZoneEnabled);