From f909e40bbc8783139fd6ccfb6f7108206e81c601 Mon Sep 17 00:00:00 2001
From: Emistry Haoyan <equinox1991@gmail.com>
Date: Sat, 18 May 2019 00:53:57 +0800
Subject: Add new atcommand *reloadnpc

- `@reloadnpc <path>` - unloads all NPCs in a file and reload it again.
- Be aware that mapflags and monster spawned directly are not removed.
---
 doc/atcommands.txt  | 10 ++++++++++
 src/map/atcommand.c | 33 +++++++++++++++++++++++++++++++++
 2 files changed, 43 insertions(+)

diff --git a/doc/atcommands.txt b/doc/atcommands.txt
index dd8ad0969..4acc30ae6 100644
--- a/doc/atcommands.txt
+++ b/doc/atcommands.txt
@@ -1260,6 +1260,16 @@ Example:
 
 ---------------------------------------
 
+@reloadnpc <path>
+
+Unloads all NPCs in a file and reload it again.
+Note: Be aware that mapflags and monsters spawned directly are not removed.
+
+Example:
+@reloadnpc npc/custom/jobmaster.txt
+
+---------------------------------------
+
 =====================
 | 6. Party Commands |
 =====================
diff --git a/src/map/atcommand.c b/src/map/atcommand.c
index 09303912b..68272e67e 100644
--- a/src/map/atcommand.c
+++ b/src/map/atcommand.c
@@ -4454,6 +4454,38 @@ ACMD(unloadnpc)
 	return true;
 }
 
+/// Unload existing NPC within the NPC file and reload it.
+/// Usage: @reloadnpc npc/sample_npc.txt
+ACMD(reloadnpc)
+{
+	if (!*message) {
+		clif->message(fd, msg_fd(fd, 1385)); // Usage: @unloadnpcfile <file name>
+		return false;
+	} else if (npc->unloadfile(message) == true) {
+		clif->message(fd, msg_fd(fd, 1386)); // File unloaded. Be aware that mapflags and monsters spawned directly are not removed.
+
+		FILE *fp = fopen(message, "r");
+		// check if script file exists
+		if (fp == NULL) {
+			clif->message(fd, msg_fd(fd, 261));
+			return false;
+		}
+		fclose(fp);
+
+		// add to list of script sources and run it
+		npc->addsrcfile(message);
+		npc->parsesrcfile(message, true);
+		npc->read_event_script();
+
+		clif->message(fd, msg_fd(fd, 262));
+	} else {
+		clif->message(fd, msg_fd(fd, 1387)); // File not found.
+		return false;
+	}
+
+	return true;
+}
+
 /*==========================================
  * time in txt for time command (by [Yor])
  *------------------------------------------*/
@@ -10107,6 +10139,7 @@ static void atcommand_basecommands(void)
 		ACMD_DEF(addperm),
 		ACMD_DEF2("rmvperm", addperm),
 		ACMD_DEF(unloadnpcfile),
+		ACMD_DEF(reloadnpc),
 		ACMD_DEF(cart),
 		ACMD_DEF(cashmount),
 		ACMD_DEF(join),
-- 
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