summaryrefslogtreecommitdiff
path: root/indra/llcharacter/llkeyframefallmotion.cpp
blob: 13308f4e4ae6c7c33ffe8ba39bebf1e07dca6144 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
/** 
 * @file llkeyframefallmotion.cpp
 * @brief Implementation of LLKeyframeFallMotion class.
 *
 * $LicenseInfo:firstyear=2001&license=viewergpl$
 * 
 * Copyright (c) 2001-2007, Linden Research, Inc.
 * 
 * Second Life Viewer Source Code
 * The source code in this file ("Source Code") is provided by Linden Lab
 * to you under the terms of the GNU General Public License, version 2.0
 * ("GPL"), unless you have obtained a separate licensing agreement
 * ("Other License"), formally executed by you and Linden Lab.  Terms of
 * the GPL can be found in doc/GPL-license.txt in this distribution, or
 * online at http://secondlife.com/developers/opensource/gplv2
 * 
 * There are special exceptions to the terms and conditions of the GPL as
 * it is applied to this Source Code. View the full text of the exception
 * in the file doc/FLOSS-exception.txt in this software distribution, or
 * online at http://secondlife.com/developers/opensource/flossexception
 * 
 * By copying, modifying or distributing this software, you acknowledge
 * that you have read and understood your obligations described above,
 * and agree to abide by those obligations.
 * 
 * ALL LINDEN LAB SOURCE CODE IS PROVIDED "AS IS." LINDEN LAB MAKES NO
 * WARRANTIES, EXPRESS, IMPLIED OR OTHERWISE, REGARDING ITS ACCURACY,
 * COMPLETENESS OR PERFORMANCE.
 * $/LicenseInfo$
 */

//-----------------------------------------------------------------------------
// Header Files
//-----------------------------------------------------------------------------
#include "linden_common.h"

#include "llkeyframefallmotion.h"
#include "llcharacter.h"
#include "m3math.h"

//-----------------------------------------------------------------------------
// Macros
//-----------------------------------------------------------------------------
#define GO_TO_KEY_POSE	1
#define MIN_TRACK_SPEED 0.01f

//-----------------------------------------------------------------------------
// LLKeyframeFallMotion()
// Class Constructor
//-----------------------------------------------------------------------------
LLKeyframeFallMotion::LLKeyframeFallMotion(const LLUUID &id) : LLKeyframeMotion(id)
{
	mVelocityZ = 0.f;
	mCharacter = NULL;
}


//-----------------------------------------------------------------------------
// ~LLKeyframeFallMotion()
// Class Destructor
//-----------------------------------------------------------------------------
LLKeyframeFallMotion::~LLKeyframeFallMotion()
{
}


//-----------------------------------------------------------------------------
// LLKeyframeFallMotion::onInitialize()
//-----------------------------------------------------------------------------
LLMotion::LLMotionInitStatus LLKeyframeFallMotion::onInitialize(LLCharacter *character)
{
	// save character pointer for later use
	mCharacter = character;

	// load keyframe data, setup pose and joint states
	LLMotion::LLMotionInitStatus result = LLKeyframeMotion::onInitialize(character);

	for (U32 jm=0; jm<mJointMotionList->getNumJointMotions(); jm++)
	{
		if (!mJointStates[jm]->getJoint())
			continue;
		if (mJointStates[jm]->getJoint()->getName() == std::string("mPelvis"))
		{
			mPelvisState = mJointStates[jm];
		}
	}

	return result;
}

//-----------------------------------------------------------------------------
// LLKeyframeFallMotion::onActivate()
//-----------------------------------------------------------------------------
BOOL LLKeyframeFallMotion::onActivate()
{
	LLVector3 ground_pos;
	LLVector3 ground_normal;
	LLQuaternion inverse_pelvis_rot;
	LLVector3 fwd_axis(1.f, 0.f, 0.f);

	mVelocityZ = -mCharacter->getCharacterVelocity().mV[VZ];
	mCharacter->getGround( mCharacter->getCharacterPosition(), ground_pos, ground_normal);
	ground_normal.normVec();

	inverse_pelvis_rot = mCharacter->getCharacterRotation();
	inverse_pelvis_rot.transQuat();

	// find ground normal in pelvis space
	ground_normal = ground_normal * inverse_pelvis_rot;

	// calculate new foward axis
	fwd_axis = fwd_axis - (ground_normal * (ground_normal * fwd_axis));
	fwd_axis.normVec();
	mRotationToGroundNormal = LLQuaternion(fwd_axis, ground_normal % fwd_axis, ground_normal);

	return LLKeyframeMotion::onActivate();
}

//-----------------------------------------------------------------------------
// LLKeyframeFallMotion::onUpdate()
//-----------------------------------------------------------------------------
BOOL LLKeyframeFallMotion::onUpdate(F32 activeTime, U8* joint_mask)
{
	BOOL result = LLKeyframeMotion::onUpdate(activeTime, joint_mask);
	F32  slerp_amt = clamp_rescale(activeTime / getDuration(), 0.5f, 0.75f, 0.f, 1.f);

	if (mPelvisState.notNull())
	{
		mPelvisState->setRotation(mPelvisState->getRotation() * slerp(slerp_amt, mRotationToGroundNormal, LLQuaternion()));
	}
	
	return result;
}

//-----------------------------------------------------------------------------
// LLKeyframeFallMotion::getEaseInDuration()
//-----------------------------------------------------------------------------
F32 LLKeyframeFallMotion::getEaseInDuration()
{
	if (mVelocityZ == 0.f)
	{
		// we've already hit the ground
		return 0.4f;
	}

	return mCharacter->getPreferredPelvisHeight() / mVelocityZ;
}

// End