PreThinkFrame and PostThinkFrame hooks

Changes from 58dd578b094639405d452593562e0f8cb2b482ce,
a36920808b74e068d582dda5a3b75bdf64246463,
41c902b819ac8fdef173c4ba76a8c50ad8107190,
60928db0e0b08fee7ceddd5515adf2246bb655c3.

src/lua_hook.h

@@ -20,7 +20,9 @@ enum hook {
 	hook_MapChange,
 	hook_MapLoad,
 	hook_PlayerJoin,
+	hook_PreThinkFrame,
 	hook_ThinkFrame,
+	hook_PostThinkFrame,
 	hook_MobjSpawn,
 	hook_MobjCollide,
 	hook_MobjMoveCollide,
@@ -64,7 +66,9 @@ extern boolean hook_cmd_running;	// This is used by PlayerCmd and lua_playerlib
 void LUAh_MapChange(INT16 mapnumber); // Hook for map change (before load)
 void LUAh_MapLoad(void); // Hook for map load
 void LUAh_PlayerJoin(int playernum); // Hook for Got_AddPlayer
+void LUAh_PreThinkFrame(void); // Hook for frame (before mobj and player thinkers)
 void LUAh_ThinkFrame(void); // Hook for frame (after mobj and player thinkers)
+void LUAh_PostThinkFrame(void); // Hook for frame (at end of tick, ie after overlays, precipitation, specials)
 boolean LUAh_MobjHook(mobj_t *mo, enum hook which);
 boolean LUAh_PlayerHook(player_t *plr, enum hook which);
 #define LUAh_MobjSpawn(mo) LUAh_MobjHook(mo, hook_MobjSpawn) // Hook for P_SpawnMobj by mobj type

src/lua_hooklib.c

@@ -31,7 +31,9 @@ const char *const hookNames[hook_MAX+1] = {
 	"MapChange",
 	"MapLoad",
 	"PlayerJoin",
+	"PreThinkFrame",
 	"ThinkFrame",
+	"PostThinkFrame",
 	"MobjSpawn",
 	"MobjCollide",
 	"MobjMoveCollide",
@@ -402,6 +404,29 @@ void LUAh_PlayerJoin(int playernum)
 	lua_settop(gL, 0);
 }
 
+// Hook for frame (before mobj and player thinkers)
+void LUAh_PreThinkFrame(void)
+{
+	hook_p hookp;
+	if (!gL || !(hooksAvailable[hook_PreThinkFrame/8] & (1<<(hook_PreThinkFrame%8))))
+		return;
+
+	for (hookp = roothook; hookp; hookp = hookp->next)
+	{
+		if (hookp->type != hook_PreThinkFrame)
+			continue;
+
+		lua_pushfstring(gL, FMT_HOOKID, hookp->id);
+		lua_gettable(gL, LUA_REGISTRYINDEX);
+		if (lua_pcall(gL, 0, 0, 0)) {
+			if (!hookp->error || cv_debug & DBG_LUA)
+				CONS_Alert(CONS_WARNING,"%s\n",lua_tostring(gL, -1));
+			lua_pop(gL, 1);
+			hookp->error = true;
+		}
+	}
+}
+
 // Hook for frame (after mobj and player thinkers)
 void LUAh_ThinkFrame(void)
 {
@@ -423,6 +448,29 @@ void LUAh_ThinkFrame(void)
 		}
 }
 
+// Hook for frame (at end of tick, ie after overlays, precipitation, specials)
+void LUAh_PostThinkFrame(void)
+{
+	hook_p hookp;
+	if (!gL || !(hooksAvailable[hook_PostThinkFrame/8] & (1<<(hook_PostThinkFrame%8))))
+		return;
+
+	for (hookp = roothook; hookp; hookp = hookp->next)
+	{
+		if (hookp->type != hook_PostThinkFrame)
+			continue;
+
+		lua_pushfstring(gL, FMT_HOOKID, hookp->id);
+		lua_gettable(gL, LUA_REGISTRYINDEX);
+		if (lua_pcall(gL, 0, 0, 0)) {
+			if (!hookp->error || cv_debug & DBG_LUA)
+				CONS_Alert(CONS_WARNING,"%s\n",lua_tostring(gL, -1));
+			lua_pop(gL, 1);
+			hookp->error = true;
+		}
+	}
+}
+
 // Hook for Y_Ticker
 void LUAh_IntermissionThinker(void)
 {

src/p_tick.c

@@ -648,6 +648,10 @@ void P_Ticker(boolean run)
 #endif
 		}
 
+#ifdef HAVE_BLUA
+		LUAh_PreThinkFrame();
+#endif
+
 		for (i = 0; i < MAXPLAYERS; i++)
 			if (playeringame[i] && players[i].mo && !P_MobjWasRemoved(players[i].mo))
 				P_PlayerThink(&players[i]);
@@ -779,6 +783,10 @@ void P_Ticker(boolean run)
 			&& --mapreset <= 1
 			&& server) // Remember: server uses it for mapchange, but EVERYONE ticks down for the animation
 				D_MapChange(gamemap, gametype, encoremode, true, 0, false, false);
+
+#ifdef HAVE_BLUA
+		LUAh_PostThinkFrame();
+#endif
 	}
 
 	// Always move the camera.
@@ -809,6 +817,10 @@ void P_PreTicker(INT32 frames)
 	{
 		P_MapStart();
 
+#ifdef HAVE_BLUA
+		LUAh_PreThinkFrame();
+#endif
+
 		for (i = 0; i < MAXPLAYERS; i++)
 			if (playeringame[i] && players[i].mo && !P_MobjWasRemoved(players[i].mo))
 			{
@@ -843,6 +855,10 @@ void P_PreTicker(INT32 frames)
 		P_UpdateSpecials();
 		P_RespawnSpecials();
 
+#ifdef HAVE_BLUA
+		LUAh_PostThinkFrame();
+#endif
+
 		P_MapEnd();
 	}
 }