multi_send_zero_packet bin exact (#1201)

Source/multi.cpp

@@ -547,23 +547,14 @@ void multi_process_tmsgs()
 	}
 }
 
-void multi_send_zero_packet(int pnum, char a2, void *pbSrc, int dwLen)
-{
-	unsigned int v4;       // edi
-	short v5;              // si
-	unsigned short dwBody; // ax
-	TPkt pkt;              // [esp+Ch] [ebp-208h]
-	int pnuma;             // [esp+20Ch] [ebp-8h]
-	int v10;               // [esp+210h] [ebp-4h]
-
-	v4 = dwLen;
-	_LOBYTE(v10) = a2;
-	pnuma = pnum;
+void multi_send_zero_packet(DWORD pnum, char a2, void *pbSrc, DWORD dwLen)
+{
+	DWORD v5, dwBody;
+	TPkt pkt;
+	int t;
 	v5 = 0;
-	while (v4) {
+	while (dwLen) {
 		pkt.hdr.wCheck = 'ip';
-		pkt.body[0] = v10;
-		dwBody = gdwLargestMsgSize - 24;
 		pkt.hdr.px = 0;
 		pkt.hdr.py = 0;
 		pkt.hdr.targx = 0;
@@ -573,18 +564,21 @@ void multi_send_zero_packet(int pnum, char a2, void *pbSrc, int dwLen)
 		pkt.hdr.bstr = 0;
 		pkt.hdr.bmag = 0;
 		pkt.hdr.bdex = 0;
+		pkt.body[0] = a2;
 		*(_WORD *)&pkt.body[1] = v5;
-		if (v4 < gdwLargestMsgSize - 24)
-			dwBody = v4;
+		dwBody = gdwLargestMsgSize - 24;
+		if (dwLen < dwBody)
+			dwBody = dwLen;
 		*(_WORD *)&pkt.body[3] = dwBody;
-		memcpy(&pkt.body[5], pbSrc, dwBody);
-		pkt.hdr.wLen = *(_WORD *)&pkt.body[3] + 24;
-		if (!SNetSendMessage(pnuma, &pkt.hdr, *(unsigned short *)&pkt.body[3] + 24)) {
+		memcpy(&pkt.body[5], pbSrc, *(_WORD *)&pkt.body[3]);
+		t = *(WORD *)&pkt.body[3] + 24;
+		pkt.hdr.wLen = t;
+		if (!SNetSendMessage(pnum, &pkt.hdr, t)) {
 			nthread_terminate_game("SNetSendMessage2");
 			return;
 		}
-		pbSrc = (char *)pbSrc + *(unsigned short *)&pkt.body[3];
-		v4 -= *(unsigned short *)&pkt.body[3];
+		pbSrc = (char *)pbSrc + *(WORD *)&pkt.body[3];
+		dwLen -= *(WORD *)&pkt.body[3];
 		v5 += *(_WORD *)&pkt.body[3];
 	}
 }

Source/multi.h

@@ -41,7 +41,7 @@ void multi_check_drop_player();
 void multi_process_network_packets();
 void multi_handle_all_packets(int players, TPkt *packet, int a3);
 void multi_process_tmsgs();
-void multi_send_zero_packet(int pnum, char a2, void *pbSrc, int dwLen);
+void multi_send_zero_packet(DWORD pnum, char a2, void *pbSrc, DWORD dwLen);
 void NetClose();
 void multi_event_handler(BOOL add);
 void __stdcall multi_handle_events(_SNETEVENT *pEvt);