Add script command expandInventory

This command allow adjust inventory size to positive or negative value.

4 files changed, 40 insertions, 0 deletions

diff --git a/doc/script_commands.txt b/doc/script_commands.txt
index d2f945719..5a9894217 100644
--- a/doc/script_commands.txt
+++ b/doc/script_commands.txt
@@ -10295,3 +10295,13 @@ Valid result values:
 Works for 20181212 zero clients
 
 ---------------------------------------
+
+*expandInventory(<value>)
+
+Adjust player inventory to given value.
+Maximum inventory size is MAX_INVENTORY.
+Minimum inventory size is FIXED_INVENTORY_SIZE.
+For supported clients it send inventory change packet. For old clients,
+this change is silent.
+
+---------------------------------------
diff --git a/src/map/pc.c b/src/map/pc.c
index ad8cf2a94..94d8cd0c6 100644
--- a/src/map/pc.c
+++ b/src/map/pc.c
@@ -12338,6 +12338,23 @@ static bool pc_has_second_costume(struct map_session_data *sd)
 	return false;
 }
 
+static bool pc_expandInventory(struct map_session_data *sd, int adjustSize)
+{
+	nullpo_retr(false, sd);
+	const int invSize = sd->status.inventorySize;
+	if (adjustSize > MAX_INVENTORY || invSize + adjustSize <= FIXED_INVENTORY_SIZE || invSize + adjustSize > MAX_INVENTORY) {
+		clif->inventoryExpandResult(sd, EXPAND_INVENTORY_RESULT_MAX_SIZE);
+		return false;
+	}
+	if (pc_isdead(sd) || sd->state.vending || sd->state.buyingstore || sd->chat_id != 0 || sd->state.trading || sd->state.storage_flag || sd->state.prevend) {
+		clif->inventoryExpandResult(sd, EXPAND_INVENTORY_RESULT_OTHER_WORK);
+		return false;
+	}
+	sd->status.inventorySize += adjustSize;
+	clif->inventoryExpansionInfo(sd);
+	return true;
+}
+
 static void do_final_pc(void)
 {
 
@@ -12740,4 +12757,5 @@ void pc_defaults(void)
 
 	pc->isDeathPenaltyJob = pc_isDeathPenaltyJob;
 	pc->has_second_costume = pc_has_second_costume;
+	pc->expandInventory = pc_expandInventory;
 }
diff --git a/src/map/pc.h b/src/map/pc.h
index cca15e829..bc2fd5a62 100644
--- a/src/map/pc.h
+++ b/src/map/pc.h
@@ -1185,6 +1185,7 @@ END_ZEROED_BLOCK; /* End */
 	bool (*check_basicskill) (struct map_session_data *sd, int level);
 	bool (*isDeathPenaltyJob) (uint16 job);
 	bool (*has_second_costume) (struct map_session_data *sd);
+	bool (*expandInventory) (struct map_session_data *sd, int adjustSize);
 };
 
 #ifdef HERCULES_CORE
diff --git a/src/map/script.c b/src/map/script.c
index 36b316320..8dadf6d57 100644
--- a/src/map/script.c
+++ b/src/map/script.c
@@ -24884,6 +24884,16 @@ static BUILDIN(expandInventoryResult)
 	return true;
 }
 
+// adjust player inventory size to given value positive or negative
+static BUILDIN(expandInventory)
+{
+	struct map_session_data *sd = script_rid2sd(st);
+	if (sd == NULL)
+		return false;
+	script_pushint(st, pc->expandInventory(sd, script_getnum(st, 2)));
+	return true;
+}
+
 /**
  * Adds a built-in script function.
  *
@@ -25626,6 +25636,7 @@ static void script_parse_builtin(void)
 		BUILDIN_DEF(enchantitem, "iii"),
 		BUILDIN_DEF(expandInventoryAck, "i?"),
 		BUILDIN_DEF(expandInventoryResult, "i"),
+		BUILDIN_DEF(expandInventory, "i"),
 	};
 	int i, len = ARRAYLENGTH(BUILDIN);
 	RECREATE(script->buildin, char *, script->buildin_count + len); // Pre-alloc to speed up