From 5e32a6be59536a6810bf558ec07dd3a615569c39 Mon Sep 17 00:00:00 2001
From: Fate <fate-tmw@googlemail.com>
Date: Thu, 11 Dec 2008 22:28:30 -0700
Subject: Added @invisible and @visible GM commands

---
 src/map/atcommand.c | 21 +++++++++++++++++++++
 src/map/clif.c      | 24 ++++++++++++++++++++++++
 src/map/map.h       | 17 ++++++++++++++++-
 src/map/pc.c        | 15 +++++++++++++++
 4 files changed, 76 insertions(+), 1 deletion(-)

diff --git a/src/map/atcommand.c b/src/map/atcommand.c
index ea92f34..d10139f 100644
--- a/src/map/atcommand.c
+++ b/src/map/atcommand.c
@@ -220,6 +220,8 @@ ATCOMMAND_FUNC(set_magic); // [Fate]
 ATCOMMAND_FUNC(magic_info); // [Fate]
 ATCOMMAND_FUNC(log); // [Fate]
 ATCOMMAND_FUNC(tee); // [Fate]
+ATCOMMAND_FUNC(invisible); // [Fate]
+ATCOMMAND_FUNC(visible); // [Fate]
 
 #ifndef TXT_ONLY
 ATCOMMAND_FUNC(checkmail); // [Valaris]
@@ -471,6 +473,8 @@ static AtCommandInfo atcommand_info[] = {
         { AtCommand_Log, "@l", 60, atcommand_log }, // [Fate]
         { AtCommand_Tee, "@tee", 60, atcommand_tee }, // [Fate]
         { AtCommand_Tee, "@t", 60, atcommand_tee }, // [Fate]
+        { AtCommand_Tee, "@invisible", 60, atcommand_invisible }, // [Fate]
+        { AtCommand_Tee, "@visible", 60, atcommand_visible }, // [Fate]
 
 #ifndef TXT_ONLY // sql-only commands
 	{ AtCommand_CheckMail,		 "@checkmail",	      1, atcommand_listmail }, // [Valaris]
@@ -8037,3 +8041,20 @@ atcommand_tee(const int fd, struct map_session_data* sd,
         clif_message(&sd->bl, data);
         return 0;
 }
+
+int
+atcommand_invisible(const int fd, struct map_session_data* sd,
+                    const char* command, const char* message)
+{
+        pc_invisibility(sd, 1);
+        return 0;
+}
+
+int
+atcommand_visible(const int fd, struct map_session_data* sd,
+                  const char* command, const char* message)
+{
+        pc_invisibility(sd, 0);
+        return 0;
+}
+
diff --git a/src/map/clif.c b/src/map/clif.c
index 653865b..82860e5 100644
--- a/src/map/clif.c
+++ b/src/map/clif.c
@@ -286,6 +286,27 @@ int clif_send(unsigned char *buf, int len, struct block_list *bl, int type) {
 
 	if (type != ALL_CLIENT) {
 		nullpo_retr(0, bl);
+
+                if (bl->type == BL_PC) {
+                    struct map_session_data *sd = (struct map_session_data *) bl;
+                    if (sd->status.option & OPTION_INVISIBILITY) {
+                        // Obscure hidden GMs
+
+                        switch (type) {
+                        case AREA:
+                        case AREA_WOC:
+                            type = SELF;
+                            break;
+
+                        case AREA_WOS:
+                        case AREA_WOSC:
+                            return;
+
+                        default:
+                            break;
+                        }
+                    }
+                }
 	}
 
 	switch(type) {
@@ -3565,6 +3586,9 @@ void clif_getareachar_pc(struct map_session_data* sd,struct map_session_data* ds
 {
 	int len;
 
+        if (dstsd->status.option & OPTION_INVISIBILITY)
+            return;
+
 	nullpo_retv(sd);
 	nullpo_retv(dstsd);
 
diff --git a/src/map/map.h b/src/map/map.h
index afaf61e..d407016 100644
--- a/src/map/map.h
+++ b/src/map/map.h
@@ -41,7 +41,22 @@
 
 #define DEFAULT_AUTOSAVE_INTERVAL 60*1000
 
-#define OPTION_HIDE 0x40
+// [Fate] status.option properties.  These are persistent status changes.
+// IDs that are not listed are not used in the code (to the best of my knowledge)
+#define OPTION_HIDE2		0x0002  // apparently some weaker non-GM hide
+#define OPTION_CLOAK		0x0004
+#define OPTION_10		0x0010
+#define OPTION_20		0x0020
+#define OPTION_HIDE		0x0040  // [Fate] This is the GM `@hide' flag
+#define OPTION_800		0x0800
+#define OPTION_INVISIBILITY	0x1000  // [Fate] Complete invisibility to other clients
+#define OPTION_SCRIBE		0x2000  // [Fate] Auto-logging of nearby comments
+#define OPTION_CHASEWALK	0x4000
+
+//  Below are special clif_changestatus() IDs reserved for option updates
+#define CLIF_OPTION_SC_BASE		0x1000
+#define CLIF_OPTION_SC_INVISIBILITY	(CLIF_OPTION_SC_BASE)
+#define CLIF_OPTION_SC_SCRIBE		(CLIF_OPTION_SC_BASE + 1)
 
 enum { BL_NUL, BL_PC, BL_NPC, BL_MOB, BL_ITEM, BL_CHAT, BL_SKILL, BL_PET, BL_SPELL };
 enum { WARP, SHOP, SCRIPT, MONS, MESSAGE };
diff --git a/src/map/pc.c b/src/map/pc.c
index 62e2cd5..bed6fc6 100644
--- a/src/map/pc.c
+++ b/src/map/pc.c
@@ -7765,3 +7765,18 @@ pc_cleanup(struct map_session_data *sd)
 {
         magic_stop_completely(sd);
 }
+
+
+void
+pc_invisibility(struct map_session_data *sd, int enabled)
+{
+        if (enabled && !(sd->status.option & OPTION_INVISIBILITY)) {
+                clif_clearchar_area(&sd->bl, 3);
+                sd->status.option |= OPTION_INVISIBILITY;
+                clif_status_change(&sd->bl, CLIF_OPTION_SC_INVISIBILITY, 1);
+        } else {
+                sd->status.option &= ~OPTION_INVISIBILITY;
+                clif_status_change(&sd->bl, CLIF_OPTION_SC_INVISIBILITY, 0);
+                pc_setpos(sd, map[sd->bl.m].name, sd->bl.x, sd->bl.y, 3);
+        }
+}
-- 
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