From 5903b1235bcb27d82cbc75fd2d39d685093e8344 Mon Sep 17 00:00:00 2001
From: Rudolf Polzer <divverent@xonotic.org>
Date: Thu, 22 Nov 2012 14:59:03 +0100
Subject: [PATCH] csqcmodel: provide helper functions for CSAD use

---
 qcsrc/csqcmodellib/cl_model.qc | 54 ++++++++++++++++++++++++++--------
 qcsrc/csqcmodellib/cl_model.qh | 13 ++++++++
 2 files changed, 54 insertions(+), 13 deletions(-)

diff --git a/qcsrc/csqcmodellib/cl_model.qc b/qcsrc/csqcmodellib/cl_model.qc
index 163a5126d..065e5495c 100644
--- a/qcsrc/csqcmodellib/cl_model.qc
+++ b/qcsrc/csqcmodellib/cl_model.qc
@@ -28,9 +28,8 @@ var float autocvar_cl_nolerp = 0;
 .float csqcmodel_lerpfractime;
 .float csqcmodel_lerpfrac2time;
 
-void CSQCModel_InterpolateAnimation_PreNote(float sf)
+void CSQCModel_InterpolateAnimation_2To4_PreNote(float sf)
 {
-#ifdef CSQCMODEL_HAVE_TWO_FRAMES
 	if(sf & CSQCMODEL_PROPERTY_FRAME)
 	{
 		self.frame3 = self.frame;
@@ -47,42 +46,62 @@ void CSQCModel_InterpolateAnimation_PreNote(float sf)
 		self.csqcmodel_lerpfrac2time = self.csqcmodel_lerpfractime;
 		self.lerpfrac = self.csqcmodel_lerpfrac;
 	}
-#else
+}
+void CSQCModel_InterpolateAnimation_1To2_PreNote(float sf)
+{
 	if(sf & CSQCMODEL_PROPERTY_FRAME)
 	{
 		self.frame2 = self.frame;
 		self.frame2time = self.frame1time;
 	}
+}
+void CSQCModel_InterpolateAnimation_PreNote(float sf)
+{
+#ifdef CSQCMODEL_HAVE_TWO_FRAMES
+	CSQCModel_InterpolateAnimation_2To4_PreNote(sf);
+#else
+	CSQCModel_InterpolateAnimation_1To2_PreNote(sf);
 #endif
 }
 
-void CSQCModel_InterpolateAnimation_Note(float sf)
+void CSQCModel_InterpolateAnimation_2To4_Note(float sf, float set_times)
 {
-#ifdef CSQCMODEL_HAVE_TWO_FRAMES
 	if(sf & CSQCMODEL_PROPERTY_FRAME)
 	{
-		self.frame1time = time;
+		if(set_times)
+			self.frame1time = time;
 	}
 	if(sf & CSQCMODEL_PROPERTY_FRAME2)
 	{
-		self.frame2time = time;
+		if(set_times)
+			self.frame2time = time;
 	}
 	if(sf & CSQCMODEL_PROPERTY_LERPFRAC)
 	{
 		self.csqcmodel_lerpfrac = self.lerpfrac;
-		self.csqcmodel_lerpfractime = time;
+		if(set_times)
+			self.csqcmodel_lerpfractime = time;
 	}
-#else
+}
+void CSQCModel_InterpolateAnimation_1To2_Note(float sf, float set_times)
+{
 	if(sf & CSQCMODEL_PROPERTY_FRAME)
 	{
-		self.frame1time = time;
+		if(set_times)
+			self.frame1time = time;
 	}
+}
+void CSQCModel_InterpolateAnimation_Note(float sf)
+{
+#ifdef CSQCMODEL_HAVE_TWO_FRAMES
+	CSQCModel_InterpolateAnimation_2To4_Note(sf, FALSE);
+#else
+	CSQCModel_InterpolateAnimation_1To2_Note(sf, FALSE);
 #endif
 }
 
-void CSQCModel_InterpolateAnimation_Do()
+void CSQCModel_InterpolateAnimation_2To4_Do()
 {
-#ifdef CSQCMODEL_HAVE_TWO_FRAMES
 	if(autocvar_cl_nolerp || (autocvar_cl_lerpanim_maxdelta_framegroups == 0))
 	{
 		self.lerpfrac = self.csqcmodel_lerpfrac;
@@ -127,7 +146,9 @@ void CSQCModel_InterpolateAnimation_Do()
 			self.frame3time = 0;
 		}
 	}
-#else
+}
+void CSQCModel_InterpolateAnimation_1To2_Do()
+{
 	if(autocvar_cl_nolerp || (autocvar_cl_lerpanim_maxdelta_framegroups == 0))
 	{
 		self.lerpfrac = 0;
@@ -139,6 +160,13 @@ void CSQCModel_InterpolateAnimation_Do()
 		else
 			self.lerpfrac = 1 - bound(0, (time - self.frame1time) / autocvar_cl_lerpanim_maxdelta_framegroups, 1);
 	}
+}
+void CSQCModel_InterpolateAnimation_Do()
+{
+#ifdef CSQCMODEL_HAVE_TWO_FRAMES
+	CSQCModel_InterpolateAnimation_2To4_Do();
+#else
+	CSQCModel_InterpolateAnimation_1To2_Do();
 #endif
 }
 
diff --git a/qcsrc/csqcmodellib/cl_model.qh b/qcsrc/csqcmodellib/cl_model.qh
index e8ea9012c..ded735741 100644
--- a/qcsrc/csqcmodellib/cl_model.qh
+++ b/qcsrc/csqcmodellib/cl_model.qh
@@ -35,3 +35,16 @@ void CSQCModel_Read(float isnew);
 
 entity CSQCModel_server2csqc(float pl);
 .float csqcmodel_teleported;
+
+// this is exported for custom frame animation code. Use with care.
+// to update frames, first call this:
+void CSQCModel_InterpolateAnimation_2To4_PreNote(float sf);
+void CSQCModel_InterpolateAnimation_1To2_PreNote(float sf);
+// then update frame, frame1time (and possibly frame2, frame2time, lerpfrac)
+// if set_times is not set, caller is responsible for frame1time, frame2time, csqcmodel_lerpfractime!
+void CSQCModel_InterpolateAnimation_2To4_Note(float sf, float set_times);
+void CSQCModel_InterpolateAnimation_1To2_Note(float sf, float set_times);
+// to retrieve animation state, call this
+void CSQCModel_InterpolateAnimation_2To4_Do();
+void CSQCModel_InterpolateAnimation_1To2_Do();
+// will overwrite lerpfrac, lerpfrac3, lerpfrac4, and possibly clear frame*time if they are undisplayed according to lerpfracs
-- 
2.39.2