- added setup of followers position at start of scene

svn-id: r16423

5 files changed, 175 insertions, 32 deletions

diff --git a/saga/actor.cpp b/saga/actor.cpp
index 42eaf5ca2a..5f14b79a98 100644
--- a/saga/actor.cpp
+++ b/saga/actor.cpp
@@ -106,6 +106,27 @@ int angleLUT[16][2] = {
 	{ -98, -237}
 };
 
+int directionLUT[8][2] = {
+	{ 0*2, -2*2},
+	{ 2*2, -1*2},
+	{ 3*2,  0*2},
+	{ 2*2,  1*2},
+	{ 0*2,  2*2},
+	{-2*2,  1*2},
+	{-4*2,  0*2},
+	{-2*2, -1*2}
+};
+
+int tileDirectionLUT[8][2] = {
+	{ 1,  1},
+	{ 2,  0},
+	{ 1, -1},
+	{ 0, -2},
+	{-1, -1},
+	{-2,  0},
+	{-1,  1},
+	{ 0,  2}
+};
 
 Actor::Actor(SagaEngine *vm) : _vm(vm) {
 	int i;
@@ -272,7 +293,7 @@ void Actor::realLocation(ActorLocation &location, uint16 objectId, uint16 walkFl
 			actor = getActor(objectId);
 			location = actor->location;
 		} else {
-			warning("ObjectId unsupported"); //TODO: do it
+			warning("ObjectId unsupported"); //todo: do it
 		}
 		
 	}
@@ -299,24 +320,114 @@ ActorData *Actor::getActor(uint16 actorId) {
 	return actor;
 }
 
+bool Actor::validFollowerLocation(const ActorLocation &location) {
+	Point point;
+	point.x = location.x / ACTOR_LMULT;
+	point.y = location.y / ACTOR_LMULT;
+	
+	if ((point.x < 5) || (point.x >= _vm->getDisplayWidth() - 5) ||
+		(point.y < 0) || (point.y >= _vm->getStatusYOffset())) {
+		return false;
+	}
+	
+	return (_vm->_scene->canWalk(point));
+}
+
 void Actor::updateActorsScene() {
-	int i;
+	int i, j;
+	int followerDirection;
 	ActorData *actor;
+	ActorLocation tempLocation;
+	ActorLocation possibleLocation;
+	Point delta;
 	
 	_activeSpeech.stringsCount = 0;
+	_protagonist = NULL;
 
 	for (i = 0; i < ACTORCOUNT; i++) {
 		actor = &_actors[i];		
 		if (actor->flags & (kProtagonist | kFollower)) {
 			actor->sceneNumber = _vm->_scene->currentSceneNumber();
 			if (actor->flags & kProtagonist) {
-//todo:				actor->finalTarget = a->obj.loc;
+				actor->finalTarget = actor->location;
 				_centerActor = _protagonist = actor;
 			}
-
 		}
-		if (actor->sceneNumber == _vm->_scene->currentSceneNumber())
+		if (actor->sceneNumber == _vm->_scene->currentSceneNumber()) {
 			actor->actionCycle = (rand() & 7) * 4;
+		}
+	}
+	
+	assert(_protagonist);
+
+/* setup protagonist entry
+	// tiled stuff
+	if (_vm->_scene->getMode() == SCENE_MODE_ISO) {
+		//todo: it
+	} else {
+	}
+*/
+	_protagonist->currentAction = kActionWait;
+
+	if (_vm->_scene->getMode() == SCENE_MODE_ISO) {
+		//todo: it
+	} else {
+		_vm->_scene->initDoorsState();
+	}
+
+	followerDirection = _protagonist->facingDirection + 3;
+	calcActorScreenPosition(_protagonist);
+
+	for (i = 0; i < ACTORCOUNT; i++) {
+		actor = &_actors[i];		
+		if (actor->flags & (kFollower)) {
+			actor->facingDirection = actor->actionDirection = _protagonist->facingDirection;
+			actor->currentAction = kActionWait;
+			actor->walkStepsCount = actor->walkStepIndex = 0;
+			actor->location.z = _protagonist->location.z;
+				
+
+			if (_vm->_scene->getMode() == SCENE_MODE_ISO) {
+				//todo: it
+			} else {
+				followerDirection &= 0x07;
+				
+				possibleLocation = _protagonist->location;
+
+
+				delta.x = directionLUT[followerDirection][0];
+				delta.y = directionLUT[followerDirection][1];
+
+
+				for (j = 0; j < 30; j++) {
+					tempLocation = possibleLocation;
+					tempLocation.x += delta.x;
+					tempLocation.y += delta.y;
+				
+					if (validFollowerLocation( tempLocation)) {
+						possibleLocation = tempLocation;
+					} else {
+						tempLocation = possibleLocation;
+						tempLocation.x += delta.x;
+						if (validFollowerLocation( tempLocation)) {
+							possibleLocation = tempLocation;
+						} else {
+							tempLocation = possibleLocation;
+							tempLocation.y += delta.y;
+							if (validFollowerLocation( tempLocation)) {
+								possibleLocation = tempLocation;
+							} else {
+								break;
+							}
+						}
+					}
+				}
+
+				actor->location = possibleLocation;
+			}
+			followerDirection += 2;
+		}
+
 	}
 
 	handleActions(0, true);
@@ -575,8 +686,18 @@ void Actor::handleActions(int msec, bool setup) {
 				break;
 
 			case kActionWalkDir:
-				debug(9,"kActionWalkDir not implemented");
-				//todo: do it
+				// tiled stuff
+				if (_vm->_scene->getMode() == SCENE_MODE_ISO) {
+					//todo: it
+				} else {
+					actor->location.x += directionLUT[actor->actionDirection][0] * 2;
+					actor->location.y += directionLUT[actor->actionDirection][1] * 2;
+
+					frameRange = getActorFrameRange(actor->actorId, actor->walkFrameSequence);
+					actor->actionCycle++;
+					actor->cycleWrap(frameRange->frameCount);
+					actor->frameNumber = frameRange->frameIndex + actor->actionCycle;
+				}
 				break;
 
 			case kActionSpeak:
@@ -819,11 +940,6 @@ int Actor::drawActors() {
 	return SUCCESS;
 }
 
-void Actor::StoA(Point &actorPoint, const Point &screenPoint) {
-	actorPoint.x = (screenPoint.x * ACTOR_LMULT);
-	actorPoint.y = (screenPoint.y * ACTOR_LMULT);
-}
-
 bool Actor::followProtagonist(ActorData *actor) {
 	ActorLocation protagonistLocation;
 	ActorLocation newLocation;
@@ -837,6 +953,7 @@ bool Actor::followProtagonist(ActorData *actor) {
 
 	actor->flags &= ~(kFaster | kFastest);
 	protagonistLocation = _protagonist->location;
+	calcActorScreenPosition(_protagonist);
 
 	if (_vm->_scene->getMode() == SCENE_MODE_ISO) {
 		//todo: it
@@ -863,9 +980,14 @@ bool Actor::followProtagonist(ActorData *actor) {
 
 		actor->location.delta(protagonistLocation, delta);
 		
-		calcActorScreenPosition(_protagonist);
-		protagonistBGMaskType = _vm->_scene->getBGMaskType(_protagonist->screenPosition);
+		protagonistBGMaskType = 0;
+		if (_vm->_scene->isBGMaskPresent()) {
+			if (_vm->_scene->validBGMaskPoint(_protagonist->screenPosition)) {
+				protagonistBGMaskType = _vm->_scene->getBGMaskType(_protagonist->screenPosition);
+			}
+		}
 
+		
 
 		if ((rand() & 0x7) == 0)
 			actor->actorFlags &= ~kActorNoFollow;
diff --git a/saga/actor.h b/saga/actor.h
index 34496de31a..0f8313018e 100644
--- a/saga/actor.h
+++ b/saga/actor.h
@@ -165,6 +165,11 @@ struct ActorLocation {
 		y += location.y;
 		z += location.z;
 	}
+	void fromScreenPoint(const Point &screenPoint) {
+		x = (screenPoint.x * ACTOR_LMULT);
+		y = (screenPoint.y * ACTOR_LMULT);
+		z = 0;
+	}
 };
 
 struct ActorData {
@@ -264,9 +269,6 @@ public:
 	int drawActors();
 	void updateActorsScene();			// calls from scene loading to update Actors info
 
-	void StoA(Point &actorPoint, const Point &screenPoint);
-
-	
 	bool actorEndWalk(uint16 actorId, bool recurse);
 	bool actorWalkTo(uint16 actorId, const ActorLocation &toLocation);
 	ActorData *getActor(uint16 actorId);
@@ -310,7 +312,8 @@ private:
 	void removeNodes();
 	void nodeToPath();
 	void removePathPoints();
-
+	bool validFollowerLocation(const ActorLocation &location);
+	
 	int _lastTickMsec;
 	SagaEngine *_vm;
 	RSCFILE_CONTEXT *_actorContext;
diff --git a/saga/interface.cpp b/saga/interface.cpp
index 77fa34b6fe..ae4ba581da 100644
--- a/saga/interface.cpp
+++ b/saga/interface.cpp
@@ -555,28 +555,27 @@ int Interface::handleCommandUpdate(SURFACE *ds, const Point& imousePt) {
 }
 
 int Interface::handlePlayfieldClick(SURFACE *ds, const Point& imousePt) {
-	return SUCCESS;
-/*
+//	return SUCCESS;
+
 	int objectNum;
 	uint16 object_flags = 0;
 
 	int script_num;
-	Point iactor_pt;
+	ActorLocation location;
 
 	objectNum = _vm->_scene->_objectMap->hitTest(imousePt);
 
 	if (objectNum == -1) {
 		// Player clicked on empty spot - walk here regardless of verb
-		_vm->_actor->StoA(iactor_pt, imousePt);
-		error("!");
+		location.fromScreenPoint(imousePt);
 
-		_vm->_actor->walkTo(1, &iactor_pt, 0, NULL);
+		_vm->_actor->actorWalkTo(ID_PROTAG, location);
 		return SUCCESS;
 	}
 
 	object_flags = _vm->_scene->_objectMap->getFlags(objectNum);
 
-	if (object_flags & OBJECT_EXIT) { // FIXME. This is wrong
+	if (object_flags & kHitZoneExit) { // FIXME. This is wrong
 		if ((script_num = _vm->_scene->_objectMap->getEPNum(objectNum)) != -1) {
 			// Set active verb in script module
 			_vm->_script->putWord(4, 4, I_VerbData[_activeVerb].s_verb);
@@ -588,13 +587,12 @@ int Interface::handlePlayfieldClick(SURFACE *ds, const Point& imousePt) {
 		}
 	} else {
 		// Not a normal scene object - walk to it as if it weren't there
-		_vm->_actor->StoA(iactor_pt, imousePt);
-//		_vm->_actor->walkTo(1, &iactor_pt, 0, NULL);
-		error("!");
+		location.fromScreenPoint(imousePt);
 
+		_vm->_actor->actorWalkTo(ID_PROTAG, location);
 	}
 
-	return SUCCESS;*/
+	return SUCCESS;
 }
 
 int Interface::handlePlayfieldUpdate(SURFACE *ds, const Point& imousePt) {
diff --git a/saga/scene.cpp b/saga/scene.cpp
index 68cfb0c24e..18b3e42a4b 100644
--- a/saga/scene.cpp
+++ b/saga/scene.cpp
@@ -46,6 +46,10 @@
 
 namespace Saga {
 
+static int initSceneDoors[SCENE_DOORS_MAX] = {
+0, 0xff, 0, 0, 0, 0, 0, 0, 0, 0, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff 
+};
+
 Scene::Scene(SagaEngine *vm) : _vm(vm), _initialized(false) {
 	GAME_SCENEDESC gs_desc;
 	byte *scene_lut_p;
@@ -372,15 +376,25 @@ int Scene::getBGMaskType(const Point &testPoint) {
 	return (_bgMask.buf[offset] >> 4) & 0x0f;
 }
 
+bool Scene::validBGMaskPoint(const Point &testPoint) {
+	if (!_bgMask.loaded) {
+		error("Scene::validBGMaskPoint _bgMask not loaded");
+	}
+
+	return !((testPoint.x < 0) || (testPoint.x >= _bgMask.w) ||
+		(testPoint.y < 0) || (testPoint.y >= _bgMask.h));
+}
+
 bool Scene::canWalk(const Point &testPoint) {
 	int maskType;
+
 	if (!_bgMask.loaded) {
 		return true;
 	}
-	if ((testPoint.x < 0) || (testPoint.x >= _bgMask.w) ||
-		(testPoint.y < 0) || (testPoint.y >= _bgMask.h)) {
+	if (!validBGMaskPoint(testPoint)) {
 			return true;
-		}
+	}
+
 	maskType = getBGMaskType(testPoint);
 	return getDoorState(maskType) == 0;
 }
@@ -487,6 +501,10 @@ int Scene::getDoorState(int doorNumber) {
 	return _sceneDoors[doorNumber];
 }
 
+void Scene::initDoorsState() {
+	memcpy(_sceneDoors, initSceneDoors, SCENE_DOORS_MAX);
+}
+
 int Scene::getInfo(SCENE_INFO *si) {
 	assert(_initialized);
 	assert(si != NULL);
diff --git a/saga/scene.h b/saga/scene.h
index e66a4fdea8..a5679fb468 100644
--- a/saga/scene.h
+++ b/saga/scene.h
@@ -234,11 +234,13 @@ class Scene {
 		return _bgMask.loaded;
 	}
 	int getBGMaskType(const Point &testPoint);
+	bool validBGMaskPoint(const Point &testPoint);
 	bool canWalk(const Point &testPoint);
 	bool offscreenPath(Point &testPoint);
 
 	void setDoorState(int doorNumber, int doorState);
 	int getDoorState(int doorNumber);
+	void initDoorsState();
 
 	int getBGInfo(SCENE_BGINFO *bginfo);
 	int getBGPal(PALENTRY **pal);