animation compression from PS2

src/animation/AnimBlendAssociation.h

@@ -13,7 +13,7 @@ enum {
 	ASSOC_MOVEMENT = 0x20,	// ???
 	ASSOC_HAS_TRANSLATION = 0x40,
 	ASSOC_WALK = 0x80,	// for CPed::PlayFootSteps(void)
-	ASSOC_FLAG_XPRESS = 0x100,	// only used by xpress scratch, see CPed::Chat(void)
+	ASSOC_IDLE = 0x100,	// only used by xpress scratch, see CPed::Chat(void)
 	ASSOC_NOWALK = 0x200,	// see CPed::PlayFootSteps(void)
 	ASSOC_BLOCK = 0x400,	// unused in assoc description, blocks other anims from being played
 	ASSOC_FRONTAL = 0x800, // anims that we fall to front

src/animation/AnimBlendHierarchy.cpp

@@ -30,15 +30,14 @@ void
 CAnimBlendHierarchy::CalcTotalTime(void)
 {
 	int i, j;
-	float totalTime = 0.0f;
+	totalLength = 0.0f;
 
 	for(i = 0; i < numSequences; i++){
 		float seqTime = 0.0f;
 		for(j = 0; j < sequences[i].numFrames; j++)
 			seqTime += sequences[i].GetKeyFrame(j)->deltaTime;
-		totalTime = Max(totalTime, seqTime);
+		totalLength = Max(totalLength, seqTime);
 	}
-	totalLength = totalTime;
 }
 
 void
@@ -61,6 +60,12 @@ CAnimBlendHierarchy::RemoveAnimSequences(void)
 void
 CAnimBlendHierarchy::Uncompress(void)
 {
+#ifdef ANIM_COMPRESSION
+	int i;
+	assert(compressed);
+	for(i = 0; i < numSequences; i++)
+		sequences[i].Uncompress();
+#endif
 	if(totalLength == 0.0f)
 		CalcTotalTime();
 	compressed = 0;
@@ -69,6 +74,11 @@ CAnimBlendHierarchy::Uncompress(void)
 void
 CAnimBlendHierarchy::RemoveUncompressedData(void)
 {
-	// useless
+#ifdef ANIM_COMPRESSION
+	int i;
+	assert(!compressed);
+	for(i = 0; i < numSequences; i++)
+		sequences[i].RemoveUncompressedData();
+#endif
 	compressed = 1;
 }

src/animation/AnimBlendSequence.cpp

@@ -15,6 +15,7 @@ CAnimBlendSequence::CAnimBlendSequence(void)
 
 CAnimBlendSequence::~CAnimBlendSequence(void)
 {
+	assert(keyFramesCompressed == nil);
 	if(keyFrames)
 		RwFree(keyFrames);
 }
@@ -60,3 +61,106 @@ CAnimBlendSequence::RemoveQuaternionFlips(void)
 		last = frame->rotation;
 	}
 }
+
+void
+CAnimBlendSequence::Uncompress(void)
+{
+	int i;
+
+	if(numFrames == 0)
+		return;
+
+	float rotScale = 1.0f/4096.0f;
+	float timeScale = 1.0f/60.0f;
+	float transScale = 1.0f/128.0f;
+	if(type & KF_TRANS){
+		void *newKfs = RwMalloc(numFrames * sizeof(KeyFrameTrans));
+		KeyFrameTransCompressed *ckf = (KeyFrameTransCompressed*)keyFramesCompressed;
+		KeyFrameTrans *kf = (KeyFrameTrans*)newKfs;
+		for(i = 0; i < numFrames; i++){
+			kf->rotation.x = ckf->rot[0]*rotScale;
+			kf->rotation.y = ckf->rot[1]*rotScale;
+			kf->rotation.z = ckf->rot[2]*rotScale;
+			kf->rotation.w = ckf->rot[3]*rotScale;
+			kf->deltaTime = ckf->deltaTime*timeScale;
+			kf->translation.x = ckf->trans[0]*transScale;
+			kf->translation.y = ckf->trans[1]*transScale;
+			kf->translation.z = ckf->trans[2]*transScale;
+			kf++;
+			ckf++;
+		}
+		keyFrames = newKfs;
+	}else{
+		void *newKfs = RwMalloc(numFrames * sizeof(KeyFrame));
+		KeyFrameCompressed *ckf = (KeyFrameCompressed*)keyFramesCompressed;
+		KeyFrame *kf = (KeyFrame*)newKfs;
+		for(i = 0; i < numFrames; i++){
+			kf->rotation.x = ckf->rot[0]*rotScale;
+			kf->rotation.y = ckf->rot[1]*rotScale;
+			kf->rotation.z = ckf->rot[2]*rotScale;
+			kf->rotation.w = ckf->rot[3]*rotScale;
+			kf->deltaTime = ckf->deltaTime*timeScale;
+			kf++;
+			ckf++;
+		}
+		keyFrames = newKfs;
+	}
+	RwFree(keyFramesCompressed);
+	keyFramesCompressed = nil;
+}
+
+void
+CAnimBlendSequence::CompressKeyframes(void)
+{
+	int i;
+
+	if(numFrames == 0)
+		return;
+
+	float rotScale = 4096.0f;
+	float timeScale = 60.0f;
+	float transScale = 128.0f;
+	if(type & KF_TRANS){
+		void *newKfs = RwMalloc(numFrames * sizeof(KeyFrameTransCompressed));
+		KeyFrameTransCompressed *ckf = (KeyFrameTransCompressed*)newKfs;
+		KeyFrameTrans *kf = (KeyFrameTrans*)keyFrames;
+		for(i = 0; i < numFrames; i++){
+			ckf->rot[0] = kf->rotation.x*rotScale;
+			ckf->rot[1] = kf->rotation.y*rotScale;
+			ckf->rot[2] = kf->rotation.z*rotScale;
+			ckf->rot[3] = kf->rotation.w*rotScale;
+			ckf->deltaTime = kf->deltaTime*timeScale + 0.5f;
+			ckf->trans[0] = kf->translation.x*transScale;
+			ckf->trans[1] = kf->translation.y*transScale;
+			ckf->trans[2] = kf->translation.z*transScale;
+			kf++;
+			ckf++;
+		}
+		keyFramesCompressed = newKfs;
+	}else{
+		void *newKfs = RwMalloc(numFrames * sizeof(KeyFrameCompressed));
+		KeyFrameCompressed *ckf = (KeyFrameCompressed*)newKfs;
+		KeyFrame *kf = (KeyFrame*)keyFrames;
+		for(i = 0; i < numFrames; i++){
+			ckf->rot[0] = kf->rotation.x*rotScale;
+			ckf->rot[1] = kf->rotation.y*rotScale;
+			ckf->rot[2] = kf->rotation.z*rotScale;
+			ckf->rot[3] = kf->rotation.w*rotScale;
+			ckf->deltaTime = kf->deltaTime*timeScale + 0.5f;
+			kf++;
+			ckf++;
+		}
+		keyFramesCompressed = newKfs;
+	}
+}
+
+void
+CAnimBlendSequence::RemoveUncompressedData(void)
+{
+	if(numFrames == 0)
+		return;
+	CompressKeyframes();
+	RwFree(keyFrames);
+	keyFrames = nil;
+}
+

src/animation/AnimBlendSequence.h

@@ -12,6 +12,15 @@ struct KeyFrameTrans : KeyFrame {
 	CVector translation;
 };
 
+struct KeyFrameCompressed {
+	int16 rot[4];		// 4096
+	int16 deltaTime;	// 60
+};
+
+struct KeyFrameTransCompressed : KeyFrameCompressed {
+	int16 trans[3];		// 128
+};
+
 
 // The sequence of key frames of one animated node
 class CAnimBlendSequence
@@ -41,10 +50,9 @@ public:
 			&((KeyFrame*)keyFrames)[n];
 	}
 	bool HasTranslation(void) { return !!(type & KF_TRANS); }
-	// TODO? these are unused
-//	void Uncompress(void);
-//	void CompressKeyframes(void);
-//	void RemoveUncompressedData(void);
+	void Uncompress(void);
+	void CompressKeyframes(void);
+	void RemoveUncompressedData(void);
 
 #ifdef PED_SKIN
 	void SetBoneTag(int tag) { boneTag = tag; }

src/animation/AnimManager.cpp

@@ -176,7 +176,7 @@ AnimAssocDesc aStdAnimDescs[] = {
 	{ ANIM_FALL_COLLAPSE, ASSOC_FADEOUTWHENDONE | ASSOC_PARTIAL | ASSOC_HAS_TRANSLATION },
 	{ ANIM_EV_STEP, ASSOC_FADEOUTWHENDONE | ASSOC_PARTIAL | ASSOC_HAS_TRANSLATION },
 	{ ANIM_EV_DIVE, ASSOC_PARTIAL | ASSOC_HAS_TRANSLATION | ASSOC_FRONTAL  },
-	{ ANIM_XPRESS_SCRATCH, ASSOC_FADEOUTWHENDONE | ASSOC_PARTIAL | ASSOC_FLAG_XPRESS  },
+	{ ANIM_XPRESS_SCRATCH, ASSOC_FADEOUTWHENDONE | ASSOC_PARTIAL | ASSOC_IDLE  },
 	{ ANIM_ROAD_CROSS, ASSOC_REPEAT | ASSOC_PARTIAL },
 	{ ANIM_TURN_180, ASSOC_FADEOUTWHENDONE | ASSOC_PARTIAL },
 	{ ANIM_ARREST_GUN, ASSOC_PARTIAL | ASSOC_HAS_TRANSLATION },

src/core/config.h

@@ -177,6 +177,7 @@ enum Config {
 #	define GTA_PS2_STUFF
 #	define RANDOMSPLASH
 #	define VU_COLLISION
+#	define ANIM_COMPRESSION
 #elif defined GTA_PC
 #	define GTA3_1_1_PATCH
 //#	define GTA3_STEAM_PATCH