XEEN: Implement frame update loop of draw3d

6 files changed, 51 insertions, 32 deletions

diff --git a/engines/xeen/interface.cpp b/engines/xeen/interface.cpp
index 665ce6728d..9e02806750 100644
--- a/engines/xeen/interface.cpp
+++ b/engines/xeen/interface.cpp
@@ -361,7 +361,8 @@ Interface::Interface(XeenEngine *vm) : ButtonContainer(), _vm(vm) {
 	_intrIndex1 = 0;
 	_flipWtr = false;
 	_flag1 = false;
-	_flag2 = false;
+	_animCounter = 0;
+	_isAnimReset = false;
 	_tillMove = 0;
 	_objNumber = 0;
 
@@ -868,15 +869,30 @@ void Interface::draw3d(bool flag) {
 			moveMonsters();
 	}
 
-	int e3 = 0xE302 + _objNumber * 8;
-	Direction dir = _vm->_party._mazeDirection;
-	bool flag2 = _flag2;
+	MazeObject &objObject = _vm->_map->_mobData._objects[_objNumber];
+	Direction partyDirection = _vm->_party._mazeDirection;
 	int objNum = _objNumber - 1;
 
 	for (uint i = 0; i < _vm->_map->_mobData._objects.size(); ++i) {
-		if (flag2) {
+		MazeObject &mazeObject = _vm->_map->_mobData._objects[i];
+		AnimationEntry &animEntry = _vm->_map->_animationInfo[mazeObject._spriteId];
+		int directionIndex = DIRECTION_ANIM_POSITIONS[mazeObject._direction][partyDirection];
 
+		if (_isAnimReset) {
+			mazeObject._frame = animEntry._frame1._frames[directionIndex];
+		} else {
+			++mazeObject._frame;
+			if (i == objNum && _animCounter > 0 && (
+					objObject._spriteId == (_vm->_files->_isDarkCc ? 15 : 16) ||
+					objObject._spriteId == 58 || objObject._spriteId == 73)) {
+				if (mazeObject._frame > 4 || mazeObject._spriteId == 58)
+					mazeObject._frame = 1;
+			} else if (mazeObject._frame == animEntry._frame2._frames[directionIndex]) {
+				mazeObject._frame = animEntry._frame2._frames[directionIndex];
+			}
 		}
+
+		mazeObject._flipped = animEntry._flipped._flags[directionIndex];
 	}
 
 	// TODO: more
diff --git a/engines/xeen/interface.h b/engines/xeen/interface.h
index 404beca2f1..d161169d68 100644
--- a/engines/xeen/interface.h
+++ b/engines/xeen/interface.h
@@ -96,7 +96,8 @@ private:
 	int _intrIndex1;
 	bool _flipWtr;
 	bool _flag1;
-	bool _flag2;
+	int _animCounter;
+	bool _isAnimReset;
 	byte _tillMove;
 	int _objNumber;
 	byte _wp[20];
diff --git a/engines/xeen/map.cpp b/engines/xeen/map.cpp
index 836680c24f..b8ea36b698 100644
--- a/engines/xeen/map.cpp
+++ b/engines/xeen/map.cpp
@@ -810,22 +810,15 @@ void HeadData::synchronize(Common::SeekableReadStream &s) {
 /*------------------------------------------------------------------------*/
 
 /**
- * Synchronize data for an entry within an animation entry
- */
-void AnimationFrame::synchronize(Common::SeekableReadStream &s) {
-	_left = s.readByte();
-	_back = s.readByte();
-	_right = s.readByte();
-	_front = s.readByte();
-}
-
-/**
  * Synchronize data for an animation entry
  */
 void AnimationEntry::synchronize(Common::SeekableReadStream &s) {
-	_frame1.synchronize(s);
-	_flipped.synchronize(s);
-	_frame2.synchronize(s);
+	for (int i = 0; i < 4; ++i)
+		_frame1._frames[i] = s.readByte();
+	for (int i = 0; i < 4; ++i)
+		_flipped._flags[i] = s.readByte() != 0;
+	for (int i = 0; i < 4; ++i)
+		_frame2._frames[i] = s.readByte();
 }
 
 /**
diff --git a/engines/xeen/map.h b/engines/xeen/map.h
index 228dfb8e22..7255552d5d 100644
--- a/engines/xeen/map.h
+++ b/engines/xeen/map.h
@@ -311,18 +311,21 @@ public:
 	void synchronize(Common::SeekableReadStream &s);
 };
 
-struct AnimationFrame {
-	int _front, _left, _back, _right;
-
-	AnimationFrame(): _front(0), _left(0), _back(0), _right(0) {}
-
-	void synchronize(Common::SeekableReadStream &s);
-};
-
+struct AnimationFrame { int _front, _left, _back, _right; };
+struct AnimationFlipped { bool _front, _left, _back, _right; };
 struct AnimationEntry {
-	AnimationFrame _frame1;
-	AnimationFrame _flipped;
-	AnimationFrame _frame2;
+	union {
+		AnimationFrame _positions;
+		int _frames[4];
+	} _frame1;
+	union {
+		AnimationFlipped _positions;
+		bool _flags[4];
+	} _flipped;
+	union {
+		AnimationFrame _positions;
+		int _frames[4];
+	} _frame2;
 
 	void synchronize(Common::SeekableReadStream &s);
 };
@@ -339,8 +342,6 @@ private:
 	XeenEngine *_vm;
 	MazeData _mazeData[9];
 	Common::String _mazeName;
-	HeadData _headData;
-	AnimationInfo _animationInfo;
 	MonsterData _monsterData;
 	SpriteResource _wallPicSprites;
 	int _townPortalSide;
@@ -358,6 +359,8 @@ public:
 	bool _isOutdoors;
 	MonsterObjectData _mobData;
 	MazeEvents _events;
+	HeadData _headData;
+	AnimationInfo _animationInfo;
 	bool _currentIsGrate;
 	bool _currentCantRest;
 	bool _currentIsDrain;
diff --git a/engines/xeen/resources.cpp b/engines/xeen/resources.cpp
index 35fa2cb2bf..e660014ec3 100644
--- a/engines/xeen/resources.cpp
+++ b/engines/xeen/resources.cpp
@@ -350,4 +350,8 @@ const int OUTDOOR_OBJECT_Y[2][12] = {
 	{ 70, 71, 72, 73, 74, 75, 90, 91, 92, 93, 94, 112 }
 };
 
+const int DIRECTION_ANIM_POSITIONS[4][4] = {
+	{ 0, 1, 2, 3 }, { 3, 0, 1, 2 }, { 2, 3, 0, 1 }, { 1, 2, 3, 0 }
+};
+
 } // End of namespace Xeen
diff --git a/engines/xeen/resources.h b/engines/xeen/resources.h
index d8cc93b9f4..35b82566b3 100644
--- a/engines/xeen/resources.h
+++ b/engines/xeen/resources.h
@@ -78,6 +78,8 @@ extern const int OUTDOOR_OBJECT_X[2][12];
 
 extern const int OUTDOOR_OBJECT_Y[2][12];
 
+extern const int DIRECTION_ANIM_POSITIONS[4][4];
+
 } // End of namespace Xeen
 
 #endif	/* XEEN_RESOURCES_H */