TOON: Implement cmd_Set_Anim_Scale_Size

Used to rescale the knight animation when the knight 
is moved around the room in Chapter 2

svn-id: r53865

3 files changed, 26 insertions, 3 deletions

diff --git a/engines/toon/anim.cpp b/engines/toon/anim.cpp
index be53c12dc7..c5769f5081 100644
--- a/engines/toon/anim.cpp
+++ b/engines/toon/anim.cpp
@@ -425,6 +425,7 @@ AnimationInstance::AnimationInstance(ToonEngine *vm, AnimationInstanceType type)
 	_playing = false;
 	_rangeEnd = 0;
 	_useMask = false;
+	_alignBottom = false;
 	_rangeStart = 0;
 	_scale = 1024;
 	_x = 0;
@@ -433,6 +434,7 @@ AnimationInstance::AnimationInstance(ToonEngine *vm, AnimationInstanceType type)
 	_layerZ = 0;
 }
 
+
 void AnimationInstance::render() {
 	debugC(5, kDebugAnim, "render()");
 	if (_visible && _animation) {
@@ -443,11 +445,22 @@ void AnimationInstance::render() {
 		if (frame >= _animation->_numFrames)
 			frame = _animation->_numFrames - 1;
 
+		int32 x = _x;
+		int32 y = _y;
+
+		if (_alignBottom) {
+			int32 offsetX = (_animation->_x2 - _animation->_x1) / 2 * (_scale - 1024);
+			int32 offsetY = (_animation->_y2 - _animation->_y1) * (_scale - 1024);
+
+			x -= offsetX >> 10;
+			y -= offsetY >> 10;
+		}
+
 		if (_useMask) {
 			//if (_scale == 100) { // 100% scale
 			//	_animation->drawFrameWithMask(_vm->getMainSurface(), _currentFrame, _x, _y, _z, _vm->getMask());
 			//} else {
-			_animation->drawFrameWithMaskAndScale(_vm->getMainSurface(), frame, _x, _y, _z, _vm->getMask(), _scale);
+			_animation->drawFrameWithMaskAndScale(_vm->getMainSurface(), frame, x, y, _z, _vm->getMask(), _scale);
 			//}
 		} else {
 			_animation->drawFrame(_vm->getMainSurface(), frame, _x, _y);
@@ -534,9 +547,10 @@ void AnimationInstance::setVisible(bool visible) {
 	_visible = visible;
 }
 
-void AnimationInstance::setScale(int32 scale) {
+void AnimationInstance::setScale(int32 scale, bool align) {
 	debugC(4, kDebugAnim, "setScale(%d)", scale);
 	_scale = scale;
+	_alignBottom = align;
 }
 
 void AnimationInstance::setUseMask(bool useMask) {
diff --git a/engines/toon/anim.h b/engines/toon/anim.h
index 5d65959e07..01475276c5 100644
--- a/engines/toon/anim.h
+++ b/engines/toon/anim.h
@@ -102,7 +102,7 @@ public:
 	void forceFrame(int32 position);
 	void setPosition(int32 x, int32 y, int32 z, bool relative = false);
 	Animation *getAnimation() const { return _animation; }
-	void setScale(int32 scale);
+	void setScale(int32 scale, bool align = false);
 	void setVisible(bool visible);
 	bool getVisible() const { return _visible; }
 	void setUseMask(bool useMask);
@@ -150,6 +150,7 @@ protected:
 	bool _playing;
 	bool _looping;
 	bool _visible;
+	bool _alignBottom;
 
 	ToonEngine *_vm;
 };
diff --git a/engines/toon/script_func.cpp b/engines/toon/script_func.cpp
index a84683a9a2..f96b9567a9 100644
--- a/engines/toon/script_func.cpp
+++ b/engines/toon/script_func.cpp
@@ -473,6 +473,14 @@ int32 ScriptFunc::sys_Cmd_Empty_Inventory(EMCState *state) {
 }
 
 int32 ScriptFunc::sys_Cmd_Set_Anim_Scale_Size(EMCState *state) {
+	int32 animID = stackPos(0);
+	int32 scale = stackPos(1);
+	
+	SceneAnimation *sceneAnim = _vm->getSceneAnimation(animID);
+	if (sceneAnim) {
+		sceneAnim->_animInstance->setUseMask(true);
+		sceneAnim->_animInstance->setScale(scale,true);
+	}
 	return 0;
 }
 int32 ScriptFunc::sys_Cmd_Delete_Item_From_Inventory(EMCState *state) {