forked from 0ad/0ad
Ykkrosh
bdbb2bcb16
Added UnitAnimation class, to act as the interface between the entity and actor. (Currently doesn't work very well, but it does make animations loop smoothly and sometimes kind of makes them stay synchronised.) Fixed corpse animation - it now plays the final frame of the death animation before turning static. Fixed update/interpolate timings. Added JS function saveProfileData. Updated ffmpeg library. This was SVN commit r4880.
125 lines
3.9 KiB
C++
125 lines
3.9 KiB
C++
///////////////////////////////////////////////////////////////////////////////
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//
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// Name: SkeletonAnimDef.cpp
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// Author: Rich Cross
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// Contact: rich@wildfiregames.com
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//
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///////////////////////////////////////////////////////////////////////////////
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#include "precompiled.h"
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#include "SkeletonAnimDef.h"
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#include "maths/MathUtil.h"
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#include "ps/FilePacker.h"
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#include "ps/FileUnpacker.h"
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///////////////////////////////////////////////////////////////////////////////////////////
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// CSkeletonAnimDef constructor
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CSkeletonAnimDef::CSkeletonAnimDef() : m_FrameTime(0), m_NumKeys(0), m_NumFrames(0), m_Keys(0)
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{
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}
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///////////////////////////////////////////////////////////////////////////////////////////
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// CSkeletonAnimDef destructor
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CSkeletonAnimDef::~CSkeletonAnimDef()
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{
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delete[] m_Keys;
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}
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///////////////////////////////////////////////////////////////////////////////////////////
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// BuildBoneMatrices: build matrices for all bones at the given time (in MS) in this
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// animation
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void CSkeletonAnimDef::BuildBoneMatrices(float time,CMatrix3D* matrices) const
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{
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float fstartframe = time/m_FrameTime;
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u32 startframe = u32(time/m_FrameTime);
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float deltatime = fstartframe-startframe;
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startframe %= m_NumFrames;
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u32 endframe = startframe + 1;
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endframe %= m_NumFrames;
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if (endframe == 0)
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{
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// This might be something like a death animation, and interpolating
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// between the final frame and the initial frame is wrong, because they're
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// totally different. So if we've looped around to endframe==0, just display
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// the animation's final frame with no interpolation.
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// (TODO: this is only sometimes valid - how can we tell the difference?)
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for (u32 i = 0; i < m_NumKeys; i++)
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{
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const Key& key = GetKey(startframe, i);
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matrices[i].SetIdentity();
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matrices[i].Rotate(key.m_Rotation);
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matrices[i].Translate(key.m_Translation);
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}
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}
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else
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{
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for (u32 i = 0; i < m_NumKeys; i++)
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{
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const Key& startkey= GetKey(startframe, i);
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const Key& endkey = GetKey(endframe, i);
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CVector3D trans = Interpolate(startkey.m_Translation, endkey.m_Translation, deltatime);
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// TODO: is slerp the best thing to use here?
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CQuaternion rot;
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rot.Slerp(startkey.m_Rotation, endkey.m_Rotation, deltatime);
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matrices[i].SetIdentity();
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matrices[i].Rotate(rot);
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matrices[i].Translate(trans);
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}
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}
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}
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///////////////////////////////////////////////////////////////////////////////////////////
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// Load: try to load the anim from given file; return a new anim if successful
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CSkeletonAnimDef* CSkeletonAnimDef::Load(const char* filename)
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{
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CFileUnpacker unpacker;
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unpacker.Read(filename,"PSSA");
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// check version
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if (unpacker.GetVersion()<FILE_READ_VERSION) {
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throw PSERROR_File_InvalidVersion();
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}
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// unpack the data
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CSkeletonAnimDef* anim=new CSkeletonAnimDef;
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try {
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CStr name; // unused - just here to maintain compatibility with the animation files
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unpacker.UnpackString(name);
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unpacker.UnpackRaw(&anim->m_FrameTime,sizeof(anim->m_FrameTime));
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unpacker.UnpackRaw(&anim->m_NumKeys,sizeof(anim->m_NumKeys));
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unpacker.UnpackRaw(&anim->m_NumFrames,sizeof(anim->m_NumFrames));
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anim->m_Keys=new Key[anim->m_NumKeys*anim->m_NumFrames];
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unpacker.UnpackRaw(anim->m_Keys,anim->m_NumKeys*anim->m_NumFrames*sizeof(Key));
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} catch (PSERROR_File&) {
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delete anim;
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throw;
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}
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return anim;
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}
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///////////////////////////////////////////////////////////////////////////////////////////
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// Save: try to save anim to file
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void CSkeletonAnimDef::Save(const char* filename,const CSkeletonAnimDef* anim)
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{
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CFilePacker packer(FILE_VERSION, "PSSA");
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// pack up all the data
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packer.PackString("");
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packer.PackRaw(&anim->m_FrameTime,sizeof(anim->m_FrameTime));
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packer.PackRaw(&anim->m_NumKeys,sizeof(anim->m_NumKeys));
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packer.PackRaw(&anim->m_NumFrames,sizeof(anim->m_NumFrames));
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packer.PackRaw(anim->m_Keys,anim->m_NumKeys*anim->m_NumFrames*sizeof(Key));
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// now write it
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packer.Write(filename);
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}
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