added animation system (with skin support for now)

src/animation/AnimBlendSequence.cpp

@@ -0,0 +1,68 @@
+#include "common.h"
+#include "patcher.h"
+#include "AnimBlendSequence.h"
+
+CAnimBlendSequence::CAnimBlendSequence(void)
+{
+	type = 0;
+	numFrames = 0;
+	keyFrames = nil;
+	keyFramesCompressed = nil;
+#ifdef PED_SKIN
+	boneTag = -1;
+#endif
+}
+
+CAnimBlendSequence::~CAnimBlendSequence(void)
+{
+	if(keyFrames)
+		RwFree(keyFrames);
+}
+
+void
+CAnimBlendSequence::SetName(char *name)
+{
+	strncpy(this->name, name, 24);
+}
+
+void
+CAnimBlendSequence::SetNumFrames(int numFrames, bool translation)
+{
+	int sz;
+
+	if(translation){
+		sz = sizeof(KeyFrameTrans);
+		type |= KF_ROT | KF_TRANS;
+	}else{
+		sz = sizeof(KeyFrame);
+		type |= KF_ROT;
+	}
+	keyFrames = RwMalloc(sz * numFrames);
+	this->numFrames = numFrames;
+}
+
+void
+CAnimBlendSequence::RemoveQuaternionFlips(void)
+{
+	int i;
+	CQuaternion last;
+	KeyFrame *frame;
+
+	if(numFrames < 2)
+		return;
+
+	frame = GetKeyFrame(0);
+	last = frame->rotation;
+	for(i = 1; i < numFrames; i++){
+		frame = GetKeyFrame(i);
+		if(DotProduct(last, frame->rotation) < 0.0f)
+			frame->rotation = -frame->rotation;
+		last = frame->rotation;
+	}
+}
+
+STARTPATCHES
+	InjectHook(0x402330, &CAnimBlendSequence::SetName, PATCH_JUMP);
+	InjectHook(0x402350, &CAnimBlendSequence::SetNumFrames, PATCH_JUMP);
+	InjectHook(0x4023A0, &CAnimBlendSequence::RemoveQuaternionFlips, PATCH_JUMP);
+ENDPATCHES