Add checking for npc activate distance.

3 files changed, 24 insertions, 3 deletions

diff --git a/src/map/data/npcd.c b/src/map/data/npcd.c
index 29e48a7..535c953 100644
--- a/src/map/data/npcd.c
+++ b/src/map/data/npcd.c
@@ -10,6 +10,7 @@
 #include "../../../common/mmo.h"
 #include "../../../common/socket.h"
 #include "../../../common/strlib.h"
+#include "../../../map/battle.h"
 #include "../../../map/npc.h"
 
 #include "map/data/npcd.h"
@@ -33,5 +34,6 @@ struct NpcdExt *npcd_create(void)
     if (!data)
         return NULL;
     data->init = false;
+    data->areaSize = AREA_SIZE;
     return data;
 }
diff --git a/src/map/npc.c b/src/map/npc.c
index 3eabaa9..62dccfe 100644
--- a/src/map/npc.c
+++ b/src/map/npc.c
@@ -15,7 +15,9 @@
 #include "../../../map/pc.h"
 
 #include "map/data/mapd.h"
+#include "map/data/npcd.h"
 #include "map/struct/mapdext.h"
+#include "map/struct/npcdext.h"
 #include "map/npc.h"
 
 struct npc_data* enpc_checknear(struct map_session_data* sd, struct block_list* bl)
@@ -39,13 +41,29 @@ struct npc_data* enpc_checknear(struct map_session_data* sd, struct block_list*
     if (nd->class_ < 0) //Class-less npc, enable click from anywhere.
         return nd;
 
-    if (bl->m != sd->bl.m ||
-        bl->x < sd->bl.x - AREA_SIZE - 1 || bl->x > sd->bl.x + AREA_SIZE + 1 ||
-        bl->y < sd->bl.y - AREA_SIZE - 1 || bl->y > sd->bl.y + AREA_SIZE + 1)
+    const int npcX = bl->x;
+    const int npcY = bl->y;
+    const int x = sd->bl.x;
+    const int y = sd->bl.y;
+
+    if (bl->m != sd->bl.m
+        || npcX < x - AREA_SIZE - 1 || npcX > x + AREA_SIZE + 1
+        || npcY < y - AREA_SIZE - 1 || npcY > y + AREA_SIZE + 1)
     {
         return NULL;
     }
 
+    struct NpcdExt *data = npcd_get(nd);
+    if (data)
+    {
+        const int size = data->areaSize;
+        if (npcX < x - size || npcX > x + size
+            || npcY < y - size || npcY > y + size)
+        {
+            return NULL;
+        }
+    }
+
     return nd;
 }
 
diff --git a/src/map/struct/npcdext.h b/src/map/struct/npcdext.h
index 2158f2c..2ba1b72 100644
--- a/src/map/struct/npcdext.h
+++ b/src/map/struct/npcdext.h
@@ -6,6 +6,7 @@
 
 struct NpcdExt
 {
+    int areaSize;
     bool init;
 };