GNAP: Refactor scene 28

3 files changed, 280 insertions, 226 deletions

diff --git a/engines/gnap/scenes/scene28.cpp b/engines/gnap/scenes/scene28.cpp
index 93723e65f6..ac55d90f01 100644
--- a/engines/gnap/scenes/scene28.cpp
+++ b/engines/gnap/scenes/scene28.cpp
@@ -23,6 +23,7 @@
 #include "gnap/gnap.h"
 #include "gnap/gamesys.h"
 #include "gnap/resource.h"
+#include "gnap/scenes/scene28.h"
 
 namespace Gnap {
 
@@ -51,108 +52,112 @@ enum {
 	kASLeaveScene				= 10
 };
 
-int GnapEngine::scene28_init() {
+Scene28::Scene28(GnapEngine *vm) : Scene(vm) {
+	_s28_currClownSequenceId = -1;
+	_s28_nextClownSequenceId = -1;
+	_s28_clownTalkCtr = 0;
+}
+
+int Scene28::init() {
 	return 0x125;
 }
 
-void GnapEngine::scene28_updateHotspots() {
-	setHotspot(kHSPlatypus, 0, 0, 0, 0, SF_WALKABLE | SF_TALK_CURSOR | SF_GRAB_CURSOR | SF_LOOK_CURSOR);
-	setHotspot(kHSHorn, 148, 352, 215, 383, SF_PLAT_CURSOR | SF_TALK_CURSOR | SF_GRAB_CURSOR | SF_LOOK_CURSOR, 1, 7);
-	setHotspot(kHSClown, 130, 250, 285, 413, SF_PLAT_CURSOR | SF_TALK_CURSOR | SF_GRAB_CURSOR | SF_LOOK_CURSOR, 3, 5);
-	setHotspot(kHSExitOutsideClown, 660, 190, 799, 400, SF_EXIT_R_CURSOR, 9, 6);
-	setHotspot(kHSEmptyBucket, 582, 421, 643, 478, SF_WALKABLE | SF_DISABLED, 9, 7);
-	setHotspot(kHSWalkArea1, 0, 0, 799, 523);
-	setHotspot(kHSWalkArea2, 0, 0, 0, 0, 7, SF_DISABLED);
-	setDeviceHotspot(kHSDevice, -1, -1, -1, -1);
-	if (invHas(kItemHorn))
-		_hotspots[kHSHorn]._flags = SF_DISABLED;
-	if (isFlag(kGFUnk22))
-		_hotspots[kHSEmptyBucket]._flags = SF_PLAT_CURSOR | SF_TALK_CURSOR | SF_GRAB_CURSOR | SF_LOOK_CURSOR;
-	_hotspotsCount = 8;
+void Scene28::updateHotspots() {
+	_vm->setHotspot(kHSPlatypus, 0, 0, 0, 0, SF_WALKABLE | SF_TALK_CURSOR | SF_GRAB_CURSOR | SF_LOOK_CURSOR);
+	_vm->setHotspot(kHSHorn, 148, 352, 215, 383, SF_PLAT_CURSOR | SF_TALK_CURSOR | SF_GRAB_CURSOR | SF_LOOK_CURSOR, 1, 7);
+	_vm->setHotspot(kHSClown, 130, 250, 285, 413, SF_PLAT_CURSOR | SF_TALK_CURSOR | SF_GRAB_CURSOR | SF_LOOK_CURSOR, 3, 5);
+	_vm->setHotspot(kHSExitOutsideClown, 660, 190, 799, 400, SF_EXIT_R_CURSOR, 9, 6);
+	_vm->setHotspot(kHSEmptyBucket, 582, 421, 643, 478, SF_WALKABLE | SF_DISABLED, 9, 7);
+	_vm->setHotspot(kHSWalkArea1, 0, 0, 799, 523);
+	_vm->setHotspot(kHSWalkArea2, 0, 0, 0, 0, 7, SF_DISABLED);
+	_vm->setDeviceHotspot(kHSDevice, -1, -1, -1, -1);
+	if (_vm->invHas(kItemHorn))
+		_vm->_hotspots[kHSHorn]._flags = SF_DISABLED;
+	if (_vm->isFlag(kGFUnk22))
+		_vm->_hotspots[kHSEmptyBucket]._flags = SF_PLAT_CURSOR | SF_TALK_CURSOR | SF_GRAB_CURSOR | SF_LOOK_CURSOR;
+	_vm->_hotspotsCount = 8;
 }
 
-void GnapEngine::scene28_run() {
-	playSound(0x1093C, true);
+void Scene28::run() {
+	_vm->playSound(0x1093C, true);
 	_s28_nextClownSequenceId = -1;
-	queueInsertDeviceIcon();
-	_gameSys->insertSequence(0x124, 255, 0, 0, kSeqNone, 0, 0, 0);
+	_vm->queueInsertDeviceIcon();
+	_vm->_gameSys->insertSequence(0x124, 255, 0, 0, kSeqNone, 0, 0, 0);
 
-	if (isFlag(kGFUnk22))
-		_gameSys->insertSequence(0x112, 99, 0, 0, kSeqNone, 0, 0, 0);
+	if (_vm->isFlag(kGFUnk22))
+		_vm->_gameSys->insertSequence(0x112, 99, 0, 0, kSeqNone, 0, 0, 0);
 
-	if (isFlag(kGFMudTaken)) {
-		if (isFlag(kGFUnk21)) {
-			_gameSys->setAnimation(0x11C, 39, 3);
-			_gameSys->insertSequence(0x11C, 39, 0, 0, kSeqNone, 0, 0, 0);
-			if (!invHas(kItemHorn))
-				_gameSys->insertSequence(0x118, 59, 0, 0, kSeqNone, 0, 0, 0);
+	if (_vm->isFlag(kGFMudTaken)) {
+		if (_vm->isFlag(kGFUnk21)) {
+			_vm->_gameSys->setAnimation(0x11C, 39, 3);
+			_vm->_gameSys->insertSequence(0x11C, 39, 0, 0, kSeqNone, 0, 0, 0);
+			if (!_vm->invHas(kItemHorn))
+				_vm->_gameSys->insertSequence(0x118, 59, 0, 0, kSeqNone, 0, 0, 0);
 			_s28_currClownSequenceId = 0x11C;
 		} else {
 			_s28_currClownSequenceId = 0x11B;
-			_gameSys->setAnimation(0x11B, 39, 3);
-			_gameSys->insertSequence(_s28_currClownSequenceId, 39, 0, 0, kSeqNone, 0, 0, 0);
-			_timers[4] = getRandom(20) + 80;
+			_vm->_gameSys->setAnimation(0x11B, 39, 3);
+			_vm->_gameSys->insertSequence(_s28_currClownSequenceId, 39, 0, 0, kSeqNone, 0, 0, 0);
+			_vm->_timers[4] = _vm->getRandom(20) + 80;
 		}
-		initGnapPos(8, 8, kDirBottomLeft);
-		initPlatypusPos(9, 8, kDirUnk4);
-		endSceneInit();
+		_vm->initGnapPos(8, 8, kDirBottomLeft);
+		_vm->initPlatypusPos(9, 8, kDirUnk4);
+		_vm->endSceneInit();
 	} else {
-		_gameSys->insertSequence(0x11B, 39, 0, 0, kSeqNone, 0, 0, 0);
-		initGnapPos(8, 8, kDirBottomLeft);
-		initPlatypusPos(9, 8, kDirUnk4);
-		endSceneInit();
-		playSequences(0xF7, 0x121, 0x122, 0x123);
+		_vm->_gameSys->insertSequence(0x11B, 39, 0, 0, kSeqNone, 0, 0, 0);
+		_vm->initGnapPos(8, 8, kDirBottomLeft);
+		_vm->initPlatypusPos(9, 8, kDirUnk4);
+		_vm->endSceneInit();
+		_vm->playSequences(0xF7, 0x121, 0x122, 0x123);
 		_s28_currClownSequenceId = 0x115;
-		setFlag(kGFMudTaken);
-		_gameSys->setAnimation(0x115, 39, 3);
-		_gameSys->insertSequence(_s28_currClownSequenceId, 39, 0x11B, 39, kSeqSyncWait, 0, 0, 0);
+		_vm->setFlag(kGFMudTaken);
+		_vm->_gameSys->setAnimation(0x115, 39, 3);
+		_vm->_gameSys->insertSequence(_s28_currClownSequenceId, 39, 0x11B, 39, kSeqSyncWait, 0, 0, 0);
 		_s28_nextClownSequenceId = -1;
-		_timers[4] = getRandom(20) + 80;
-		_gnapActionStatus = kASGnapWaiting;
-		while (_gameSys->getAnimationStatus(3) != 2) {
-			gameUpdateTick();
-			updateMouseCursor();
+		_vm->_timers[4] = _vm->getRandom(20) + 80;
+		_vm->_gnapActionStatus = kASGnapWaiting;
+		while (_vm->_gameSys->getAnimationStatus(3) != 2) {
+			_vm->gameUpdateTick();
+			_vm->updateMouseCursor();
 		}
-		_gnapActionStatus = -1;
+		_vm->_gnapActionStatus = -1;
 	}
 
-	while (!_sceneDone) {
-
-		updateMouseCursor();
-		updateCursorByHotspot();
+	while (!_vm->_sceneDone) {
+		_vm->updateMouseCursor();
+		_vm->updateCursorByHotspot();
 
-		_sceneClickedHotspot = getClickedHotspotId();
-		updateGrabCursorSprite(0, 0);
-
-		switch (_sceneClickedHotspot) {
+		_vm->_sceneClickedHotspot = _vm->getClickedHotspotId();
+		_vm->updateGrabCursorSprite(0, 0);
 
+		switch (_vm->_sceneClickedHotspot) {
 		case kHSDevice:
-			if (_gnapActionStatus < 0) {
-				runMenu();
-				scene28_updateHotspots();
+			if (_vm->_gnapActionStatus < 0) {
+				_vm->runMenu();
+				updateHotspots();
 			}
 			break;
 
 		case kHSPlatypus:
-			if (_gnapActionStatus < 0) {
-				if (_grabCursorSpriteIndex == kItemJoint) {
-					gnapUseJointOnPlatypus();
-				} else if (_grabCursorSpriteIndex >= 0) {
-					playGnapImpossible(0, 0);
+			if (_vm->_gnapActionStatus < 0) {
+				if (_vm->_grabCursorSpriteIndex == kItemJoint) {
+					_vm->gnapUseJointOnPlatypus();
+				} else if (_vm->_grabCursorSpriteIndex >= 0) {
+					_vm->playGnapImpossible(0, 0);
 				} else {
-					switch (_verbCursor) {
+					switch (_vm->_verbCursor) {
 					case LOOK_CURSOR:
-						playGnapMoan1(_platX, _platY);
+						_vm->playGnapMoan1(_vm->_platX, _vm->_platY);
 						break;
 					case GRAB_CURSOR:
-						gnapKissPlatypus(0);
+						_vm->gnapKissPlatypus(0);
 						break;
 					case TALK_CURSOR:
-						playGnapBrainPulsating(_platX, _platY);
-						playPlatypusSequence(getPlatypusSequenceId());
+						_vm->playGnapBrainPulsating(_vm->_platX, _vm->_platY);
+						_vm->playPlatypusSequence(_vm->getPlatypusSequenceId());
 						break;
 					case PLAT_CURSOR:
-						playGnapImpossible(0, 0);
+						_vm->playGnapImpossible(0, 0);
 						break;
 					}
 				}
@@ -160,32 +165,32 @@ void GnapEngine::scene28_run() {
 			break;
 
 		case kHSHorn:
-			if (_gnapActionStatus < 0) {
-				if (_grabCursorSpriteIndex >= 0) {
-					playGnapShowCurrItem(2, 8, 3, 4);
+			if (_vm->_gnapActionStatus < 0) {
+				if (_vm->_grabCursorSpriteIndex >= 0) {
+					_vm->playGnapShowCurrItem(2, 8, 3, 4);
 				} else {
-					switch (_verbCursor) {
+					switch (_vm->_verbCursor) {
 					case LOOK_CURSOR:
-						playGnapScratchingHead(2, 4);
+						_vm->playGnapScratchingHead(2, 4);
 						break;
 					case GRAB_CURSOR:
-						if (isFlag(kGFUnk21)) {
-							if (!invHas(kItemHorn)) {
-								gnapWalkTo(_gnapX, _gnapY, 0, getGnapSequenceId(gskIdle, _hotspotsWalkPos[kHSHorn].x, _hotspotsWalkPos[kHSHorn].y) | 0x10000, 1);
-								_gnapActionStatus = kASGrabHornSuccess;
+						if (_vm->isFlag(kGFUnk21)) {
+							if (!_vm->invHas(kItemHorn)) {
+								_vm->gnapWalkTo(_vm->_gnapX, _vm->_gnapY, 0, _vm->getGnapSequenceId(gskIdle, _vm->_hotspotsWalkPos[kHSHorn].x, _vm->_hotspotsWalkPos[kHSHorn].y) | 0x10000, 1);
+								_vm->_gnapActionStatus = kASGrabHornSuccess;
 							}
 						} else {
-							_gnapIdleFacing = kDirUpLeft;
-							gnapWalkTo(2, 8, 0, 0x107BB, 1);
-							_hotspots[kHSWalkArea1]._flags |= SF_WALKABLE;
-							gnapWalkTo(_hotspotsWalkPos[kHSHorn].x, _hotspotsWalkPos[kHSHorn].y, 0, 0x107BB, 1);
-							_hotspots[kHSWalkArea1]._flags &= ~SF_WALKABLE;
-							_gnapActionStatus = kASGrabHornFails;
+							_vm->_gnapIdleFacing = kDirUpLeft;
+							_vm->gnapWalkTo(2, 8, 0, 0x107BB, 1);
+							_vm->_hotspots[kHSWalkArea1]._flags |= SF_WALKABLE;
+							_vm->gnapWalkTo(_vm->_hotspotsWalkPos[kHSHorn].x, _vm->_hotspotsWalkPos[kHSHorn].y, 0, 0x107BB, 1);
+							_vm->_hotspots[kHSWalkArea1]._flags &= ~SF_WALKABLE;
+							_vm->_gnapActionStatus = kASGrabHornFails;
 						}
 						break;
 					case TALK_CURSOR:
 					case PLAT_CURSOR:
-						playGnapImpossible(0, 0);
+						_vm->playGnapImpossible(0, 0);
 						break;
 					}
 				}
@@ -193,39 +198,39 @@ void GnapEngine::scene28_run() {
 			break;
 
 		case kHSClown:
-			if (_gnapActionStatus < 0) {
-				if (isFlag(kGFUnk21)) {
-					if (_verbCursor == LOOK_CURSOR)
-						playGnapScratchingHead(5, 2);
+			if (_vm->_gnapActionStatus < 0) {
+				if (_vm->isFlag(kGFUnk21)) {
+					if (_vm->_verbCursor == LOOK_CURSOR)
+						_vm->playGnapScratchingHead(5, 2);
 					else
-						playGnapImpossible(0, 0);
-				} else if (_grabCursorSpriteIndex == kItemBucketWithBeer) {
-					_gnapIdleFacing = kDirUpLeft;
-					gnapWalkTo(_hotspotsWalkPos[kHSClown].x, _hotspotsWalkPos[kHSClown].y, 0, 0x107BC, 1);
-					playGnapPullOutDevice(0, 0);
-					playGnapUseDevice(0, 0);
-					_gnapActionStatus = kASUseBeerBucketWithClown;
-				} else if (_grabCursorSpriteIndex == kItemBucketWithPill) {
-					_gnapIdleFacing = kDirUpLeft;
-					gnapWalkTo(_hotspotsWalkPos[kHSClown].x, _hotspotsWalkPos[kHSClown].y, 0, 0x107BC, 1);
-					playGnapPullOutDevice(0, 0);
-					playGnapUseDevice(0, 0);
-					_gnapActionStatus = kASUsePillBucketWithClown;
-				} else if (_grabCursorSpriteIndex >= 0) {
-					playGnapShowCurrItem(_hotspotsWalkPos[kHSClown].x, _hotspotsWalkPos[kHSClown].y, 2, 4);
+						_vm->playGnapImpossible(0, 0);
+				} else if (_vm->_grabCursorSpriteIndex == kItemBucketWithBeer) {
+					_vm->_gnapIdleFacing = kDirUpLeft;
+					_vm->gnapWalkTo(_vm->_hotspotsWalkPos[kHSClown].x, _vm->_hotspotsWalkPos[kHSClown].y, 0, 0x107BC, 1);
+					_vm->playGnapPullOutDevice(0, 0);
+					_vm->playGnapUseDevice(0, 0);
+					_vm->_gnapActionStatus = kASUseBeerBucketWithClown;
+				} else if (_vm->_grabCursorSpriteIndex == kItemBucketWithPill) {
+					_vm->_gnapIdleFacing = kDirUpLeft;
+					_vm->gnapWalkTo(_vm->_hotspotsWalkPos[kHSClown].x, _vm->_hotspotsWalkPos[kHSClown].y, 0, 0x107BC, 1);
+					_vm->playGnapPullOutDevice(0, 0);
+					_vm->playGnapUseDevice(0, 0);
+					_vm->_gnapActionStatus = kASUsePillBucketWithClown;
+				} else if (_vm->_grabCursorSpriteIndex >= 0) {
+					_vm->playGnapShowCurrItem(_vm->_hotspotsWalkPos[kHSClown].x, _vm->_hotspotsWalkPos[kHSClown].y, 2, 4);
 				} else {
-					switch (_verbCursor) {
+					switch (_vm->_verbCursor) {
 					case LOOK_CURSOR:
-						playGnapScratchingHead(5, 2);
+						_vm->playGnapScratchingHead(5, 2);
 						break;
 					case TALK_CURSOR:
-						_gnapIdleFacing = kDirUpLeft;
-						gnapWalkTo(5, 8, 0, getGnapSequenceId(gskBrainPulsating, 0, 0) | 0x10000, 1);
-						_gnapActionStatus = kASTalkClown;
+						_vm->_gnapIdleFacing = kDirUpLeft;
+						_vm->gnapWalkTo(5, 8, 0, _vm->getGnapSequenceId(gskBrainPulsating, 0, 0) | 0x10000, 1);
+						_vm->_gnapActionStatus = kASTalkClown;
 						break;
 					case GRAB_CURSOR:
 					case PLAT_CURSOR:
-						playGnapImpossible(0, 0);
+						_vm->playGnapImpossible(0, 0);
 						break;
 					}
 				}
@@ -233,35 +238,35 @@ void GnapEngine::scene28_run() {
 			break;
 
 		case kHSExitOutsideClown:
-			if (_gnapActionStatus < 0) {
-				_isLeavingScene = true;
-				_newSceneNum = 27;
-				_hotspots[kHSWalkArea1]._flags |= SF_WALKABLE;
-				gnapWalkTo(_hotspotsWalkPos[kHSExitOutsideClown].x, _hotspotsWalkPos[kHSExitOutsideClown].y, 0, 0x107BF, 1);
-				_gnapActionStatus = kASLeaveScene;
-				_hotspots[kHSWalkArea1]._flags &= ~SF_WALKABLE;
-				platypusWalkTo(_hotspotsWalkPos[kHSExitOutsideClown].x - 1, _hotspotsWalkPos[kHSExitOutsideClown].y, -1, 0x107C2, 1);
+			if (_vm->_gnapActionStatus < 0) {
+				_vm->_isLeavingScene = true;
+				_vm->_newSceneNum = 27;
+				_vm->_hotspots[kHSWalkArea1]._flags |= SF_WALKABLE;
+				_vm->gnapWalkTo(_vm->_hotspotsWalkPos[kHSExitOutsideClown].x, _vm->_hotspotsWalkPos[kHSExitOutsideClown].y, 0, 0x107BF, 1);
+				_vm->_gnapActionStatus = kASLeaveScene;
+				_vm->_hotspots[kHSWalkArea1]._flags &= ~SF_WALKABLE;
+				_vm->platypusWalkTo(_vm->_hotspotsWalkPos[kHSExitOutsideClown].x - 1, _vm->_hotspotsWalkPos[kHSExitOutsideClown].y, -1, 0x107C2, 1);
 			}
 			break;
 
 		case kHSEmptyBucket:
-			if (_gnapActionStatus < 0) {
-				if (_grabCursorSpriteIndex >= 0) {
-					playGnapShowItem(_grabCursorSpriteIndex, 8, 6);
-				} else if (isFlag(kGFUnk21)) {
-					playGnapImpossible(8, 6);
+			if (_vm->_gnapActionStatus < 0) {
+				if (_vm->_grabCursorSpriteIndex >= 0) {
+					_vm->playGnapShowItem(_vm->_grabCursorSpriteIndex, 8, 6);
+				} else if (_vm->isFlag(kGFUnk21)) {
+					_vm->playGnapImpossible(8, 6);
 				} else {
-					switch (_verbCursor) {
+					switch (_vm->_verbCursor) {
 					case LOOK_CURSOR:
-						playGnapScratchingHead(8, 6);
+						_vm->playGnapScratchingHead(8, 6);
 						break;
 					case GRAB_CURSOR:
-						gnapWalkTo(_gnapX, _gnapY, 0, getGnapSequenceId(gskIdle, _hotspotsWalkPos[kHSEmptyBucket].x, _hotspotsWalkPos[kHSEmptyBucket].y) | 0x10000, 1);
-						_gnapActionStatus = kASGrabEmptyBucket;
+						_vm->gnapWalkTo(_vm->_gnapX, _vm->_gnapY, 0, _vm->getGnapSequenceId(gskIdle, _vm->_hotspotsWalkPos[kHSEmptyBucket].x, _vm->_hotspotsWalkPos[kHSEmptyBucket].y) | 0x10000, 1);
+						_vm->_gnapActionStatus = kASGrabEmptyBucket;
 						break;
 					case TALK_CURSOR:
 					case PLAT_CURSOR:
-						playGnapImpossible(0, 0);
+						_vm->playGnapImpossible(0, 0);
 						break;
 					}
 				}
@@ -270,114 +275,110 @@ void GnapEngine::scene28_run() {
 
 		case kHSWalkArea1:
 		case kHSWalkArea2:
-			if (_gnapActionStatus < 0)
-				gnapWalkTo(-1, -1, -1, -1, 1);
+			if (_vm->_gnapActionStatus < 0)
+				_vm->gnapWalkTo(-1, -1, -1, -1, 1);
 			break;
 			
 		default:
-			if (_mouseClickState._left && _gnapActionStatus < 0) {
-				gnapWalkTo(-1, -1, -1, -1, 1);
-				_mouseClickState._left = false;
+			if (_vm->_mouseClickState._left && _vm->_gnapActionStatus < 0) {
+				_vm->gnapWalkTo(-1, -1, -1, -1, 1);
+				_vm->_mouseClickState._left = false;
 			}
 			break;
-			
 		}
 
-		scene28_updateAnimations();
+		updateAnimations();
 
-		if (!isSoundPlaying(0x1093C))
-			playSound(0x1093C, true);
+		if (!_vm->isSoundPlaying(0x1093C))
+			_vm->playSound(0x1093C, true);
 
-		if (!_isLeavingScene) {
-			updatePlatypusIdleSequence();
-			updateGnapIdleSequence();
-			if (!_timers[4]) {
-				_timers[4] = getRandom(20) + 80;
-				if (_gnapActionStatus < 0 && !isFlag(kGFUnk21))
+		if (!_vm->_isLeavingScene) {
+			_vm->updatePlatypusIdleSequence();
+			_vm->updateGnapIdleSequence();
+			if (!_vm->_timers[4]) {
+				_vm->_timers[4] = _vm->getRandom(20) + 80;
+				if (_vm->_gnapActionStatus < 0 && !_vm->isFlag(kGFUnk21))
 					_s28_nextClownSequenceId = 0x114;
 			}
 		}
 
-		checkGameKeys();
+		_vm->checkGameKeys();
 
-		if (isKeyStatus1(8)) {
-			clearKeyStatus1(8);
-			runMenu();
-			scene28_updateHotspots();
+		if (_vm->isKeyStatus1(8)) {
+			_vm->clearKeyStatus1(8);
+			_vm->runMenu();
+			updateHotspots();
 		}
 		
-		gameUpdateTick();
-
+		_vm->gameUpdateTick();
 	}
-	
 }
 
-void GnapEngine::scene28_updateAnimations() {
-	
-	if (_gameSys->getAnimationStatus(0) == 2) {
-		_gameSys->setAnimation(0, 0, 0);
-		switch (_gnapActionStatus) {
+void Scene28::updateAnimations() {
+	if (_vm->_gameSys->getAnimationStatus(0) == 2) {
+		_vm->_gameSys->setAnimation(0, 0, 0);
+		switch (_vm->_gnapActionStatus) {
 		case kASUseBeerBucketWithClown:
-			setFlag(kGFUnk22);
+			_vm->setFlag(kGFUnk22);
 			_s28_nextClownSequenceId = 0x113;
-			invRemove(kItemBucketWithBeer);
-			scene28_updateHotspots();
+			_vm->invRemove(kItemBucketWithBeer);
+			updateHotspots();
 			break;
 		case kASUsePillBucketWithClown:
 			_s28_nextClownSequenceId = 0x116;
-			invRemove(kItemBucketWithPill);
-			setFlag(kGFUnk22);
-			setFlag(kGFUnk21);
-			scene28_updateHotspots();
+			_vm->invRemove(kItemBucketWithPill);
+			_vm->setFlag(kGFUnk22);
+			_vm->setFlag(kGFUnk21);
+			updateHotspots();
 			break;
 		case kASGrabHornFails:
 			_s28_nextClownSequenceId = 0x119;
 			break;
 		case kASGrabHornSuccess:
-			playGnapPullOutDevice(0, 0);
-			playGnapUseDevice(0, 0);
-			_gameSys->setAnimation(0x117, 59, 0);
-			_gameSys->insertSequence(0x117, 59, 280, 59, kSeqSyncWait, 0, 0, 0);
-			_gnapActionStatus = kASGrabHornSuccessDone;
+			_vm->playGnapPullOutDevice(0, 0);
+			_vm->playGnapUseDevice(0, 0);
+			_vm->_gameSys->setAnimation(0x117, 59, 0);
+			_vm->_gameSys->insertSequence(0x117, 59, 280, 59, kSeqSyncWait, 0, 0, 0);
+			_vm->_gnapActionStatus = kASGrabHornSuccessDone;
 			break;
 		case kASGrabHornSuccessDone:
-			hideCursor();
-			setGrabCursorSprite(-1);
-			addFullScreenSprite(0xF6, 255);
-			_gameSys->setAnimation(0x120, 256, 0);
-			_gameSys->insertSequence(0x120, 256, 0, 0, kSeqNone, 0, 0, 0);
-			while (_gameSys->getAnimationStatus(0) != 2)
-				gameUpdateTick();
-			removeFullScreenSprite();
-			showCursor();
-			setGrabCursorSprite(kItemHorn);
-			invAdd(kItemHorn);
-			scene28_updateHotspots();
-			_gnapActionStatus = -1;
+			_vm->hideCursor();
+			_vm->setGrabCursorSprite(-1);
+			_vm->addFullScreenSprite(0xF6, 255);
+			_vm->_gameSys->setAnimation(0x120, 256, 0);
+			_vm->_gameSys->insertSequence(0x120, 256, 0, 0, kSeqNone, 0, 0, 0);
+			while (_vm->_gameSys->getAnimationStatus(0) != 2)
+				_vm->gameUpdateTick();
+			_vm->removeFullScreenSprite();
+			_vm->showCursor();
+			_vm->setGrabCursorSprite(kItemHorn);
+			_vm->invAdd(kItemHorn);
+			updateHotspots();
+			_vm->_gnapActionStatus = -1;
 			break;
 		case kASGrabEmptyBucket:
-			playGnapPullOutDevice(0, 0);
-			playGnapUseDevice(0, 0);
-			_gameSys->setAnimation(0x111, 99, 0);
-			_gameSys->insertSequence(0x111, 99, 274, 99, kSeqSyncWait, 0, 0, 0);
-			_gnapActionStatus = kASGrabEmptyBucketDone;
+			_vm->playGnapPullOutDevice(0, 0);
+			_vm->playGnapUseDevice(0, 0);
+			_vm->_gameSys->setAnimation(0x111, 99, 0);
+			_vm->_gameSys->insertSequence(0x111, 99, 274, 99, kSeqSyncWait, 0, 0, 0);
+			_vm->_gnapActionStatus = kASGrabEmptyBucketDone;
 			break;
 		case kASGrabEmptyBucketDone:
-			setGrabCursorSprite(kItemEmptyBucket);
-			clearFlag(kGFUnk22);;
-			scene28_updateHotspots();
-			invAdd(kItemEmptyBucket);
-			_gnapActionStatus = -1;
+			_vm->setGrabCursorSprite(kItemEmptyBucket);
+			_vm->clearFlag(kGFUnk22);;
+			updateHotspots();
+			_vm->invAdd(kItemEmptyBucket);
+			_vm->_gnapActionStatus = -1;
 			break;
 		case kASGrabHornFailsDone:
-			_gameSys->insertSequence(0x107B5, _gnapId, 281, 39, kSeqSyncWait, 0, 75 * _gnapX - _gnapGridX, 48 * _gnapY - _gnapGridY);
-			_gnapSequenceId = 0x7B5;
-			_gnapSequenceDatNum = 1;
-			_gameSys->insertSequence(0x11B, 39, 0, 0, kSeqNone, 0, 0, 0);
+			_vm->_gameSys->insertSequence(0x107B5, _vm->_gnapId, 281, 39, kSeqSyncWait, 0, 75 * _vm->_gnapX - _vm->_gnapGridX, 48 * _vm->_gnapY - _vm->_gnapGridY);
+			_vm->_gnapSequenceId = 0x7B5;
+			_vm->_gnapSequenceDatNum = 1;
+			_vm->_gameSys->insertSequence(0x11B, 39, 0, 0, kSeqNone, 0, 0, 0);
 			_s28_currClownSequenceId = 0x11B;
 			_s28_nextClownSequenceId = -1;
-			_gnapActionStatus = -1;
-			gnapWalkTo(2, 8, -1, 0x107BB, 1);
+			_vm->_gnapActionStatus = -1;
+			_vm->gnapWalkTo(2, 8, -1, 0x107BB, 1);
 			break;
 		case kASTalkClown:
 			_s28_clownTalkCtr = (_s28_clownTalkCtr + 1) % 2;
@@ -389,60 +390,59 @@ void GnapEngine::scene28_updateAnimations() {
 				_s28_nextClownSequenceId = 0x11F; // NOTE CHECKME Never set, bug in the original?
 			break;
 		case kASGnapWaiting:
-			_gnapActionStatus = -1;
+			_vm->_gnapActionStatus = -1;
 			break;
 		case kASLeaveScene:
-			_sceneDone = true;
+			_vm->_sceneDone = true;
 			break;
 		}
 	}
 
-	if (_gameSys->getAnimationStatus(3) == 2) {
+	if (_vm->_gameSys->getAnimationStatus(3) == 2) {
 		switch (_s28_nextClownSequenceId) {
 		case 0x113:
-			setGrabCursorSprite(-1);
-			_gameSys->setAnimation(_s28_nextClownSequenceId, 39, 0);
-			_gameSys->insertSequence(0x112, 99, 0, 0, kSeqNone, getSequenceTotalDuration(_s28_nextClownSequenceId), 0, 0);
-			_gameSys->insertSequence(_s28_nextClownSequenceId, 39, _s28_currClownSequenceId, 39, kSeqSyncWait, 0, 0, 0);
-			_gameSys->insertSequence(0x11B, 39, _s28_nextClownSequenceId, 39, kSeqSyncWait, 0, 0, 0);
+			_vm->setGrabCursorSprite(-1);
+			_vm->_gameSys->setAnimation(_s28_nextClownSequenceId, 39, 0);
+			_vm->_gameSys->insertSequence(0x112, 99, 0, 0, kSeqNone, _vm->getSequenceTotalDuration(_s28_nextClownSequenceId), 0, 0);
+			_vm->_gameSys->insertSequence(_s28_nextClownSequenceId, 39, _s28_currClownSequenceId, 39, kSeqSyncWait, 0, 0, 0);
+			_vm->_gameSys->insertSequence(0x11B, 39, _s28_nextClownSequenceId, 39, kSeqSyncWait, 0, 0, 0);
 			_s28_currClownSequenceId = 0x11B;
 			_s28_nextClownSequenceId = -1;
-			_gnapActionStatus = kASGnapWaiting;
+			_vm->_gnapActionStatus = kASGnapWaiting;
 			break;
 		case 0x116:
-			setGrabCursorSprite(-1);
-			_gameSys->setAnimation(_s28_nextClownSequenceId, 39, 0);
-			_gameSys->insertSequence(0x112, 99, 0, 0, kSeqNone, getSequenceTotalDuration(_s28_nextClownSequenceId), 0, 0);
-			_gameSys->insertSequence(_s28_nextClownSequenceId, 39, _s28_currClownSequenceId, 39, kSeqSyncWait, 0, 0, 0);
-			_gameSys->insertSequence(0x11C, 39, _s28_nextClownSequenceId, 39, kSeqSyncWait, 0, 0, 0);
-			_gameSys->insertSequence(0x118, 59, 0, 0, kSeqNone, getSequenceTotalDuration(_s28_nextClownSequenceId), 0, 0);
+			_vm->setGrabCursorSprite(-1);
+			_vm->_gameSys->setAnimation(_s28_nextClownSequenceId, 39, 0);
+			_vm->_gameSys->insertSequence(0x112, 99, 0, 0, kSeqNone, _vm->getSequenceTotalDuration(_s28_nextClownSequenceId), 0, 0);
+			_vm->_gameSys->insertSequence(_s28_nextClownSequenceId, 39, _s28_currClownSequenceId, 39, kSeqSyncWait, 0, 0, 0);
+			_vm->_gameSys->insertSequence(0x11C, 39, _s28_nextClownSequenceId, 39, kSeqSyncWait, 0, 0, 0);
+			_vm->_gameSys->insertSequence(0x118, 59, 0, 0, kSeqNone, _vm->getSequenceTotalDuration(_s28_nextClownSequenceId), 0, 0);
 			_s28_currClownSequenceId = _s28_nextClownSequenceId;
 			_s28_nextClownSequenceId = -1;
-			_gnapActionStatus = kASGnapWaiting;
+			_vm->_gnapActionStatus = kASGnapWaiting;
 			break;
 		case 0x11D:
 		case 0x11E:
 		case 0x11F:
-			_gnapActionStatus = -1;
+			_vm->_gnapActionStatus = -1;
 			break;
 		case 0x119:
-			_gameSys->insertSequence(_s28_nextClownSequenceId, 39, makeRid(_gnapSequenceDatNum, _gnapSequenceId), _gnapId, kSeqSyncWait, 0, 0, 0);
-			_gameSys->setAnimation(_s28_nextClownSequenceId, 39, 0);
-			_gameSys->removeSequence(_s28_currClownSequenceId, 39, true);
-			_gnapActionStatus = kASGrabHornFailsDone;
-			_gnapSequenceId = _s28_nextClownSequenceId;
-			_gnapSequenceDatNum = 0;
+			_vm->_gameSys->insertSequence(_s28_nextClownSequenceId, 39, makeRid(_vm->_gnapSequenceDatNum, _vm->_gnapSequenceId), _vm->_gnapId, kSeqSyncWait, 0, 0, 0);
+			_vm->_gameSys->setAnimation(_s28_nextClownSequenceId, 39, 0);
+			_vm->_gameSys->removeSequence(_s28_currClownSequenceId, 39, true);
+			_vm->_gnapActionStatus = kASGrabHornFailsDone;
+			_vm->_gnapSequenceId = _s28_nextClownSequenceId;
+			_vm->_gnapSequenceDatNum = 0;
 			_s28_nextClownSequenceId = -1;
 			break;
 		}
 		if (_s28_nextClownSequenceId != -1) {
-			_gameSys->insertSequence(_s28_nextClownSequenceId, 39, _s28_currClownSequenceId, 39, kSeqSyncWait, 0, 0, 0);
-			_gameSys->setAnimation(_s28_nextClownSequenceId, 39, 3);
+			_vm->_gameSys->insertSequence(_s28_nextClownSequenceId, 39, _s28_currClownSequenceId, 39, kSeqSyncWait, 0, 0, 0);
+			_vm->_gameSys->setAnimation(_s28_nextClownSequenceId, 39, 3);
 			_s28_currClownSequenceId = _s28_nextClownSequenceId;
 			_s28_nextClownSequenceId = -1;
 		}
 	}
-	
 }
 
 } // End of namespace Gnap
diff --git a/engines/gnap/scenes/scene28.h b/engines/gnap/scenes/scene28.h
new file mode 100644
index 0000000000..40fa93b15a
--- /dev/null
+++ b/engines/gnap/scenes/scene28.h
@@ -0,0 +1,51 @@
+/* ScummVM - Graphic Adventure Engine
+ *
+ * ScummVM is the legal property of its developers, whose names
+ * are too numerous to list here. Please refer to the COPYRIGHT
+ * file distributed with this source distribution.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ *
+ */
+
+#ifndef GNAP_SCENE28_H
+#define GNAP_SCENE28_H
+
+#include "gnap/debugger.h"
+#include "gnap/scenes/scenecore.h"
+
+namespace Gnap {
+
+class GnapEngine;
+
+class Scene28: public Scene {
+public:
+	Scene28(GnapEngine *vm);
+	~Scene28() {}
+
+	virtual int init();
+	virtual void updateHotspots();
+	virtual void run();
+	virtual void updateAnimations();
+	virtual void updateAnimationsCb() {};
+
+private:
+	int _s28_currClownSequenceId;
+	int _s28_nextClownSequenceId;
+	int _s28_clownTalkCtr;
+};
+
+} // End of namespace Gnap
+#endif // GNAP_SCENE28_H
diff --git a/engines/gnap/scenes/scenecore.cpp b/engines/gnap/scenes/scenecore.cpp
index 0198eb573b..25a2f7df50 100644
--- a/engines/gnap/scenes/scenecore.cpp
+++ b/engines/gnap/scenes/scenecore.cpp
@@ -53,6 +53,7 @@
 #include "gnap/scenes/scene25.h"
 #include "gnap/scenes/scene26.h"
 #include "gnap/scenes/scene27.h"
+#include "gnap/scenes/scene28.h"
 #include "gnap/scenes/scene47.h"
 #include "gnap/scenes/scene48.h"
 #include "gnap/scenes/scene54.h"
@@ -256,8 +257,9 @@ int GnapEngine::initSceneLogic() {
 		initSceneGrid(21, 146, 11, 10);
 		break;
 	case 28:
-		backgroundId = scene28_init();
-		scene28_updateHotspots();
+		_scene = new Scene28(this);
+		backgroundId = _scene->init();
+		_scene->updateHotspots();
 		_gameSys->setScaleValues(0, 500, 1, 1000);
 		initSceneGrid(21, 146, 11, 10);
 		break;
@@ -578,7 +580,8 @@ void GnapEngine::runSceneLogic() {
 			_newSceneNum = 20;
 		break;
 	case 28:
-		scene28_run();
+		_scene->run();
+		delete _scene;
 		if (_newSceneNum == 55)
 			_newSceneNum = 20;
 		break;