CRUISE: Fix Memory Accesses Errors and Leaks Reported By Valgrind

Most of these fixes are fairly simple, though the clamping of ArrayStates accesses in object.cpp _might_ cause regressions. None are obvious on basic playtest check, but the game will need a full playtest.

svn-id: r54408

3 files changed, 13 insertions, 3 deletions

diff --git a/engines/cruise/cell.cpp b/engines/cruise/cell.cpp
index 65cc234bda..24ae663dc7 100644
--- a/engines/cruise/cell.cpp
+++ b/engines/cruise/cell.cpp
@@ -65,9 +65,7 @@ cellStruct *addCell(cellStruct *pHead, int16 overlayIdx, int16 objIdx, int16 typ
 		if (currentHead2->type != 5) {
 			int16 lvar2;
 
-			getSingleObjectParam(currentHead2->overlay, currentHead2->idx, 2, &lvar2);
-
-			if (lvar2 >= var)
+			if(getSingleObjectParam(currentHead2->overlay, currentHead2->idx, 2, &lvar2) >= 0 && lvar2 >= var)
 				break;
 		}
 
diff --git a/engines/cruise/object.cpp b/engines/cruise/object.cpp
index 4d2c1c2273..864491605f 100644
--- a/engines/cruise/object.cpp
+++ b/engines/cruise/object.cpp
@@ -79,6 +79,12 @@ int16 getMultipleObjectParam(int16 overlayIdx, int16 objectIdx, objectParamsQuer
 		state = globalVars[overlayTable[overlayIdx].state + ptr->_stateTableIdx];
 
 		ptr2 = &ovlData->arrayStates[ptr->_firstStateIdx + state];
+
+		if (ptr->_firstStateIdx + state < 0) {
+			debug(0, "Invalid Negative arrayState index in getMultipleObjectParam(overlayIdx: %d, objectIdx: %d)... Forcing to 0", overlayIdx, objectIdx);
+			ptr2 = &ovlData->arrayStates[0];
+		}
+
 		state2 = ptr2->state;
 		break;
 	}
@@ -242,6 +248,11 @@ int16 getSingleObjectParam(int16 overlayIdx, int16 param2, int16 param3, int16 *
 		state = globalVars[overlayTable[overlayIdx].state + ptr->_stateTableIdx];
 
 		ptr2 = &ovlData->arrayStates[ptr->_firstStateIdx + state];
+
+		if (ptr->_firstStateIdx + state < 0) {
+			debug(0, "Invalid Negative arrayState index in getSingleObjectParam(overlayIdx: %d, param2: %d, param3: %d)... Forcing to 0", overlayIdx, param2, param3);
+			ptr2 = &ovlData->arrayStates[0];
+		}
 		break;
 	}
 	case VARIABLE: {
diff --git a/engines/cruise/sound.cpp b/engines/cruise/sound.cpp
index 84547237cc..3cb499c6a4 100644
--- a/engines/cruise/sound.cpp
+++ b/engines/cruise/sound.cpp
@@ -40,6 +40,7 @@ class PCSoundDriver {
 public:
 	typedef void (*UpdateCallback)(void *);
 
+	PCSoundDriver() { _upCb = NULL, _upRef = NULL, _musicVolume = 0, _sfxVolume = 0; }
 	virtual ~PCSoundDriver() {}
 
 	virtual void setupChannel(int channel, const byte *data, int instrument, int volume) = 0;