utils: mdldec: smd.c: linear movement loss fix.

utils/mdldec/smd.c

@@ -383,6 +383,7 @@ WriteFrameInfo
 static void WriteFrameInfo( FILE *fp, mstudioanim_t *anim, mstudioseqdesc_t *seqdesc, int frame )
 {
 	int			 i, j;
+	float			 scale;
 	vec_t			 motion[6]; // x, y, z, xr, yr, zr
 	mstudiobone_t		*bone;
 
@@ -396,8 +397,10 @@ static void WriteFrameInfo( FILE *fp, mstudioanim_t *anim, mstudioseqdesc_t *seq
 
 		if( bone->parent == -1 )
 		{
+			scale = frame / (float)( seqdesc->numframes - 1 );
+
 			for( j = 0; j < 3; j++ )
-				motion[j] += frame * 1.0f / seqdesc->numframes * seqdesc->linearmovement[j];
+				motion[j] += scale * seqdesc->linearmovement[j];
 
 			ProperBoneRotationZ( motion, 270.0f );
 		}