From 043e5696b73ca44eac69bc8d8bc8962c50fc5b79 Mon Sep 17 00:00:00 2001
From: BobTheBob <32057864+BobTheBob9@users.noreply.github.com>
Date: Wed, 22 Jun 2022 12:57:54 +0100
Subject: allow titan loadouts to be modified in script through callbacks
 (#316)

---
 .../mod/scripts/vscripts/_loadouts_mp.gnut         | 45 ++++++++++++++++++++--
 1 file changed, 41 insertions(+), 4 deletions(-)

(limited to 'Northstar.CustomServers/mod')

diff --git a/Northstar.CustomServers/mod/scripts/vscripts/_loadouts_mp.gnut b/Northstar.CustomServers/mod/scripts/vscripts/_loadouts_mp.gnut
index a31963cf..5359eac9 100644
--- a/Northstar.CustomServers/mod/scripts/vscripts/_loadouts_mp.gnut
+++ b/Northstar.CustomServers/mod/scripts/vscripts/_loadouts_mp.gnut
@@ -3,11 +3,24 @@ global function SvLoadoutsMP_Init
 
 global function SetLoadoutGracePeriodEnabled
 global function SetWeaponDropsEnabled
+
+global function AddCallback_OnTryGetTitanLoadout
 global function GetTitanLoadoutForPlayer
 
+global struct sTryGetTitanLoadoutCallbackReturn
+{
+	bool wasChanged = false
+	bool runMoreCallbacks = true
+	TitanLoadoutDef& loadout
+}
+
+typedef TryGetTitanLoadoutCallbackType sTryGetTitanLoadoutCallbackReturn functionref( entity player, TitanLoadoutDef loadout, bool wasChanged )
+
 struct {
 	bool loadoutGracePeriodEnabled = true
 	bool weaponDropsEnabled = true
+	array< TryGetTitanLoadoutCallbackType > onTryGetTitanLoadoutCallbacks
+	
 	array<entity> dirtyLoadouts
 } file
 
@@ -65,16 +78,40 @@ void function DelayDestroyDroppedWeapon( entity weapon )
 		weapon.Destroy()
 }
 
+void function AddCallback_OnTryGetTitanLoadout( TryGetTitanLoadoutCallbackType callback )
+{
+	file.onTryGetTitanLoadoutCallbacks.append( callback )
+}
+
 TitanLoadoutDef function GetTitanLoadoutForPlayer( entity player )
 {
 	SetActiveTitanLoadout( player ) // set right loadout
-	
+	TitanLoadoutDef loadout = GetActiveTitanLoadout( player )
+
 	// fix bug with titan weapons having null mods
 	// null mods aren't valid and crash if we try to give them to npc
-	TitanLoadoutDef def = GetActiveTitanLoadout( player )
-	def.primaryMods.removebyvalue( "null" )
+	loadout.primaryMods.removebyvalue( "null" )
+
+	// allow scripts to modify loadouts
+	bool wasChanged = false
+	foreach ( TryGetTitanLoadoutCallbackType callback in file.onTryGetTitanLoadoutCallbacks )
+	{
+		sTryGetTitanLoadoutCallbackReturn callbackRet = callback( player, loadout, wasChanged )
+		
+		// whether the callback has changed the player's titan loadout
+		wasChanged = wasChanged || callbackRet.wasChanged 
+		if ( wasChanged )
+			loadout = callbackRet.loadout
+		
+		// whether the callback has indicated that we should run no more callbacks ( e.g. if we're forcing a given loadout to be chosen, we shouldn't run any more )
+		if ( !callbackRet.runMoreCallbacks )
+			break
+	}
+	
+	// do this again just in case
+	loadout.primaryMods.removebyvalue( "null" )
 	
-	return def
+	return loadout
 }
 
 void function LoadoutsMPInitPlayer( entity player )
-- 
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