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diff --git a/indra/llcharacter/llmultigesture.h b/indra/llcharacter/llmultigesture.h
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+++ b/indra/llcharacter/llmultigesture.h
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+/** 
+ * @file llmultigesture.h
+ * @brief Gestures that are asset-based and can have multiple steps.
+ *
+ * Copyright (c) 2004-$CurrentYear$, Linden Research, Inc.
+ * $License$
+ */
+
+#ifndef LL_LLMULTIGESTURE_H
+#define LL_LLMULTIGESTURE_H
+
+#include <set>
+#include <string>
+#include <vector>
+
+#include "lluuid.h"
+#include "llframetimer.h"
+
+class LLDataPacker;
+class LLGestureStep;
+
+class LLMultiGesture
+{
+public:
+	LLMultiGesture();
+	virtual ~LLMultiGesture();
+
+	// Maximum number of bytes this could hold once serialized.
+	S32 getMaxSerialSize() const;
+
+	BOOL serialize(LLDataPacker& dp) const;
+	BOOL deserialize(LLDataPacker& dp);
+
+	void dump();
+
+	void reset();
+
+	const std::string& getTrigger() const { return mTrigger; }
+protected:
+	LLMultiGesture(const LLMultiGesture& gest);
+	const LLMultiGesture& operator=(const LLMultiGesture& rhs);
+
+public:
+	// name is stored at asset level
+	// desc is stored at asset level
+	KEY mKey;
+	MASK mMask;
+
+	// String, like "/foo" or "hello" that makes it play
+	std::string mTrigger;
+
+	// Replaces the trigger substring with this text
+	std::string mReplaceText;
+
+	std::vector<LLGestureStep*> mSteps;
+
+	// Is the gesture currently playing?
+	BOOL mPlaying;
+
+	// "instruction pointer" for steps
+	S32 mCurrentStep;
+
+	// We're waiting for triggered animations to stop playing
+	BOOL mWaitingAnimations;
+
+	// We're waiting a fixed amount of time
+	BOOL mWaitingTimer;
+
+	// Waiting after the last step played for all animations to complete
+	BOOL mWaitingAtEnd;
+
+	// Timer for waiting
+	LLFrameTimer mWaitTimer;
+
+	void (*mDoneCallback)(LLMultiGesture* gesture, void* data);
+	void* mCallbackData;
+
+	// Animations that we requested to start
+	std::set<LLUUID> mRequestedAnimIDs;
+
+	// Once the animation starts playing (sim says to start playing)
+	// the ID is moved from mRequestedAnimIDs to here.
+	std::set<LLUUID> mPlayingAnimIDs;
+};
+
+
+enum EStepType
+{
+	STEP_ANIMATION = 0,
+	STEP_SOUND = 1,
+	STEP_CHAT = 2,
+	STEP_WAIT = 3,
+
+	STEP_EOF = 4
+};
+
+
+class LLGestureStep
+{
+public:
+	LLGestureStep() {}
+	virtual ~LLGestureStep() {}
+
+	virtual EStepType getType() = 0;
+
+	// Return a user-readable label for this step
+	virtual std::string getLabel() const = 0;
+
+	virtual S32 getMaxSerialSize() const = 0;
+	virtual BOOL serialize(LLDataPacker& dp) const = 0;
+	virtual BOOL deserialize(LLDataPacker& dp) = 0;
+
+	virtual void dump() = 0;
+};
+
+
+// By default, animation steps start animations.
+// If the least significant bit is 1, it will stop animations.
+const U32 ANIM_FLAG_STOP = 0x01;
+
+class LLGestureStepAnimation : public LLGestureStep
+{
+public:
+	LLGestureStepAnimation();
+	virtual ~LLGestureStepAnimation();
+
+	virtual EStepType getType() { return STEP_ANIMATION; }
+
+	virtual std::string getLabel() const;
+
+	virtual S32 getMaxSerialSize() const;
+	virtual BOOL serialize(LLDataPacker& dp) const;
+	virtual BOOL deserialize(LLDataPacker& dp);
+
+	virtual void dump();
+
+public:
+	std::string mAnimName;
+	LLUUID mAnimAssetID;
+	U32 mFlags;
+};
+
+
+class LLGestureStepSound : public LLGestureStep
+{
+public:
+	LLGestureStepSound();
+	virtual ~LLGestureStepSound();
+
+	virtual EStepType getType() { return STEP_SOUND; }
+
+	virtual std::string getLabel() const;
+
+	virtual S32 getMaxSerialSize() const;
+	virtual BOOL serialize(LLDataPacker& dp) const;
+	virtual BOOL deserialize(LLDataPacker& dp);
+
+	virtual void dump();
+
+public:
+	std::string mSoundName;
+	LLUUID mSoundAssetID;
+	U32 mFlags;
+};
+
+
+class LLGestureStepChat : public LLGestureStep
+{
+public:
+	LLGestureStepChat();
+	virtual ~LLGestureStepChat();
+
+	virtual EStepType getType() { return STEP_CHAT; }
+
+	virtual std::string getLabel() const;
+
+	virtual S32 getMaxSerialSize() const;
+	virtual BOOL serialize(LLDataPacker& dp) const;
+	virtual BOOL deserialize(LLDataPacker& dp);
+
+	virtual void dump();
+
+public:
+	std::string mChatText;
+	U32 mFlags;
+};
+
+
+const U32 WAIT_FLAG_TIME		= 0x01;
+const U32 WAIT_FLAG_ALL_ANIM	= 0x02;
+
+class LLGestureStepWait : public LLGestureStep
+{
+public:
+	LLGestureStepWait();
+	virtual ~LLGestureStepWait();
+
+	virtual EStepType getType() { return STEP_WAIT; }
+
+	virtual std::string getLabel() const;
+
+	virtual S32 getMaxSerialSize() const;
+	virtual BOOL serialize(LLDataPacker& dp) const;
+	virtual BOOL deserialize(LLDataPacker& dp);
+
+	virtual void dump();
+
+public:
+	F32 mWaitSeconds;
+	U32 mFlags;
+};
+
+#endif