Add support for request client language from server.

5 files changed, 40 insertions, 5 deletions

diff --git a/src/net/tmwa/network.cpp b/src/net/tmwa/network.cpp
index addc737ee..08ba1db10 100644
--- a/src/net/tmwa/network.cpp
+++ b/src/net/tmwa/network.cpp
@@ -83,7 +83,7 @@ short packet_lengths[] =
  -1,  -1,  20,  10,  32,   9,  34,  14,   2,   6,  48,  56,  -1,   4,   5,  10,
 // #0x0200
  26,   0,   0,   0,  18,   0,   0,   0,   0,   0,   0,  19,  10,   0,   0,   0,
-  2,  -1,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,
+  2,  -1,   8,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,
  -1, 122,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,
 };
 
diff --git a/src/net/tmwa/network.h b/src/net/tmwa/network.h
index 17a4f7370..c0ec6ef3c 100644
--- a/src/net/tmwa/network.h
+++ b/src/net/tmwa/network.h
@@ -39,7 +39,7 @@
  * Protocol version, reported to the eAthena char and mapserver who can adjust
  * the protocol accordingly.
  */
-#define CLIENT_PROTOCOL_VERSION      4
+#define CLIENT_PROTOCOL_VERSION      5
 #define CLIENT_TMW_PROTOCOL_VERSION      1
 
 namespace TmwAthena
diff --git a/src/net/tmwa/npchandler.cpp b/src/net/tmwa/npchandler.cpp
index 574f34d55..5e305070e 100644
--- a/src/net/tmwa/npchandler.cpp
+++ b/src/net/tmwa/npchandler.cpp
@@ -41,7 +41,8 @@ extern Net::NpcHandler *npcHandler;
 namespace TmwAthena
 {
 
-NpcHandler::NpcHandler()
+NpcHandler::NpcHandler() :
+    mRequestLang(false)
 {
     static const Uint16 _messages[] =
     {
@@ -51,6 +52,7 @@ NpcHandler::NpcHandler()
         SMSG_NPC_CLOSE,
         SMSG_NPC_INT_INPUT,
         SMSG_NPC_STR_INPUT,
+        SMSG_NPC_COMMAND,
         0
     };
     handledMessages = _messages;
@@ -59,9 +61,12 @@ NpcHandler::NpcHandler()
 
 void NpcHandler::handleMessage(Net::MessageIn &msg)
 {
-    getNpc(msg, msg.getId() == SMSG_NPC_CHOICE
+    int npcId = getNpc(msg, msg.getId() == SMSG_NPC_CHOICE
         || msg.getId() == SMSG_NPC_MESSAGE);
 
+    if (msg.getId() != SMSG_NPC_STR_INPUT)
+        mRequestLang = false;
+
     switch (msg.getId())
     {
         case SMSG_NPC_CHOICE:
@@ -85,7 +90,14 @@ void NpcHandler::handleMessage(Net::MessageIn &msg)
             break;
 
         case SMSG_NPC_STR_INPUT:
-            processNpcStrInput(msg);
+            if (mRequestLang)
+                processLangReuqest(msg, npcId);
+            else
+                processNpcStrInput(msg);
+            break;
+
+        case SMSG_NPC_COMMAND:
+            processNpcCommand(msg);
             break;
 
         default:
@@ -227,4 +239,19 @@ int NpcHandler::getNpc(Net::MessageIn &msg, bool haveLength)
     return npcId;
 }
 
+void NpcHandler::processNpcCommand(Net::MessageIn &msg)
+{
+    const int cmd = msg.readInt16();
+    if (cmd == 0)
+        mRequestLang = true;
+    else
+        logger->log("unknown npc command: %d", cmd);
+}
+
+void NpcHandler::processLangReuqest(Net::MessageIn &msg A_UNUSED, int npcId)
+{
+    mRequestLang = false;
+    stringInput(npcId, getLangSimple());
+}
+
 } // namespace TmwAthena
diff --git a/src/net/tmwa/npchandler.h b/src/net/tmwa/npchandler.h
index 967829ddc..648b1e5d9 100644
--- a/src/net/tmwa/npchandler.h
+++ b/src/net/tmwa/npchandler.h
@@ -65,6 +65,13 @@ class NpcHandler : public MessageHandler, public Ea::NpcHandler
         void sellItem(int beingId, int itemId, int amount);
 
         int getNpc(Net::MessageIn &msg, bool haveLength);
+
+        void processNpcCommand(Net::MessageIn &msg);
+
+        void processLangReuqest(Net::MessageIn &msg, int npcId);
+
+    private:
+        bool mRequestLang;
 };
 
 } // namespace TmwAthena
diff --git a/src/net/tmwa/protocol.h b/src/net/tmwa/protocol.h
index 0f124cc20..ddc642101 100644
--- a/src/net/tmwa/protocol.h
+++ b/src/net/tmwa/protocol.h
@@ -335,5 +335,6 @@ enum
 #define SMSG_IGNORE_ALL_RESPONSE     0x00d2
 #define CMSG_ONLINE_LIST             0x0210
 #define SMSG_ONLINE_LIST             0x0211
+#define SMSG_NPC_COMMAND             0x0212
 
 #endif