game: sync target_sky with ReRelease code

Based on: https://github.com/Paril/quake2-rerelease-dll.git

src/game/g_target.c

@@ -1639,10 +1639,6 @@ SP_target_music(edict_t* self)
 void
 target_sky_use(edict_t *self, edict_t *other, edict_t *activator)
 {
-	float rotate;
-	int autorotate;
-
-
 	if (!self)
 	{
 		return;
@@ -1653,12 +1649,31 @@ target_sky_use(edict_t *self, edict_t *other, edict_t *activator)
 		gi.configstring(CS_SKY, self->map);
 	}
 
-	rotate = self->accel;
-	autorotate = self->style;
-	gi.configstring(CS_SKYROTATE, va("%f %d", rotate, autorotate));
+	if (self->count & 3)
+	{
+		float rotate;
+		int autorotate;
 
-	gi.configstring(CS_SKYAXIS, va("%f %f %f",
-		self->movedir[0], self->movedir[1], self->movedir[2]));
+		sscanf(gi.get_configstring(CS_SKYROTATE), "%f %i", &rotate, &autorotate);
+
+		if (self->count & 1)
+		{
+			rotate = self->accel;
+		}
+
+		if (self->count & 2)
+		{
+			autorotate = self->style;
+		}
+
+		gi.configstring(CS_SKYROTATE, va("%f %d", rotate, autorotate));
+	}
+
+	if (self->count & 4)
+	{
+		gi.configstring(CS_SKYAXIS, va("%f %f %f",
+			self->movedir[0], self->movedir[1], self->movedir[2]));
+	}
 }
 
 void
@@ -1676,7 +1691,23 @@ SP_target_sky(edict_t* self)
 		self->map = st.sky;
 	}
 
-	VectorCopy(st.skyaxis, self->movedir);
-	self->accel = st.skyrotate;
-	self->style = st.skyautorotate;
+	if (self->movedir[0] &&
+		self->movedir[1] &&
+		self->movedir[2])
+	{
+		self->count |= 4;
+		VectorCopy(st.skyaxis, self->movedir);
+	}
+
+	if (st.skyrotate)
+	{
+		self->count |= 1;
+		self->accel = st.skyrotate;
+	}
+
+	if (st.skyautorotate)
+	{
+		self->count |= 2;
+		self->style = st.skyautorotate;
+	}
 }

src/game/header/game.h

@@ -200,6 +200,7 @@ typedef struct
 	   NULL can be passed for buf to just determine existance */
 	int (*FS_LoadFile) (const char *name, void **buf);
 	void (*FS_FreeFile) (void *buf);
+	const char * (*get_configstring)(int num);
 } game_import_t;
 
 /* functions exported by the game subsystem */

src/game/header/local.h

@@ -385,7 +385,7 @@ typedef struct
 	edict_t *disguise_violator;
 	int disguise_violation_framenum;
 
-	char *start_items;
+	char *start_items;             /* level start items */
 } level_locals_t;
 
 /* spawn_temp_t is only used to hold entity field values that

src/server/sv_game.c

@@ -224,6 +224,21 @@ PF_Configstring(int index, const char *val)
 	}
 }
 
+/* Direct get value for config string, index in library range */
+static const char *
+PF_ConfigstringGet(int index)
+{
+	index = P_ConvertConfigStringFrom(index, SV_GetRecomendedProtocol());
+
+	if ((index < 0) || (index >= MAX_CONFIGSTRINGS))
+	{
+		Com_Error(ERR_DROP, "configstring: bad index %i\n", index);
+	}
+
+	/* change the string in sv */
+	return sv.configstrings[index];
+}
+
 static void
 PF_WriteChar(int c)
 {
@@ -420,6 +435,7 @@ SV_InitGameProgs(void)
 	import.imageindex = SV_ImageIndex;
 
 	import.configstring = PF_Configstring;
+	import.get_configstring = PF_ConfigstringGet;
 	import.sound = PF_StartSound;
 	import.positioned_sound = SV_StartSound;