private unsafe List <ChatMessage> GetMessages()
{
var list = new List <ChatMessage>();
uint bytesRead = 0;
// Static base pointer to chat object array
uint chatBasePointer = MemFunctions.ResolveNestedPointer(_client.Handle, ChatObjectsBase, 0);
// Number between 0-199 (Number of messages that can be shown in the ingame chat window)
uint lastChatOffset = MemFunctions.ResolveNestedPointer(_client.Handle, LastChatObject, 0);
// Calculate index of first message to show
uint firstChatToShow = FetchCount > lastChatOffset ? 0 : (lastChatOffset - FetchCount);
for (uint chatOffset = firstChatToShow; chatOffset < lastChatOffset; chatOffset++)
{
// More efficient to read the whole chat structure into an object in one hit.
// Object is kinda like a Union in old school C / C++ (see the object definition)
var chatObj = new Chatobj();
// Structure object byte overlay pointer
byte *lpChatObj = &chatObj.bytes[0];
// To pass to mem functions (number of bytes to read)
int sizeofChatObj = Marshal.SizeOf(chatObj);
// Read chatObj structure from PW memory into our object
Mem.MemReadBytesToStruct(_client.Handle, chatBasePointer + (0x1C * chatOffset), lpChatObj, sizeofChatObj);
// Actual message entry in object is just a pointer, so go retrieve the message
uint chatPointer = MemFunctions.ResolveNestedPointer(_client.Handle, chatBasePointer + (0x1C * (chatOffset)) + 0x8, 0);
string str = MemFunctions.MemReadUnicode(_client.Handle, chatObj.p_msg, 256, ref bytesRead).Replace("\r", "\r\n");
list.Add(new ChatMessage
{
Id = chatObj.msgId,
Scope = (Scopes)chatObj.msgScope,
Raw = str,
ItemId = chatObj.itemId,
});
}
return(list);
}
private void LoadSendChatOpcode()
{
//Allocate memory for the opcode to call the sendChat function
_sendChatOpcodeAddress = MemFunctions.AllocateMemory(_client.Handle, _sendChatOpcode.Length);
//Write the opcode to memory
MemFunctions.MemWriteBytes(_client.Handle, _sendChatOpcodeAddress, _sendChatOpcode);
//Calculate relative call address of sendChat()
uint relAddress = SendChatCall - (uint)_sendChatOpcodeAddress - 12 - (uint)(_sendChatOpcode.Length / 2);
//Insert the functionAddress in opcode
byte[] functionAddress = BitConverter.GetBytes(relAddress);
MemFunctions.MemWriteBytes(_client.Handle, _sendChatOpcodeAddress + 22, functionAddress);
uint chatClassPtr = MemFunctions.ResolveNestedPointer(_client.Handle, BaseCall, 0x1C, 0x18, 0x8, 0xC4, 0x20, 0);
byte[] chatClassPtrBytes = BitConverter.GetBytes(chatClassPtr);
MemFunctions.MemWriteBytes(_client.Handle, _sendChatOpcodeAddress + 13, chatClassPtrBytes);
}
public static ElementClient[] GetClients()
{
var processes = Process.GetProcessesByName("elementclient");
return(processes.Select(pr =>
{
IntPtr handle = MemFunctions.OpenProcess(pr.Id);
uint playerBase = MemFunctions.ResolveNestedPointer(handle, BaseCall, 0x1C, 0x34);
uint namePtr = MemFunctions.ResolveNestedPointer(handle, playerBase, NameOffset, 0);
uint bytesRead = 0;
return new ElementClient
{
Pid = pr.Id,
Handle = handle,
PlayerBase = playerBase,
Nickname = MemFunctions.MemReadUnicode(handle, namePtr, 0x32, ref bytesRead),
};
}).ToArray());
}
// Just updates the variable information in the opcode without reallocating the whole opcode
// to another memory location
private void UpdateSetChatTextOpcode(string str)
{
Encoding unicode = Encoding.Unicode;
byte[] unicodeBytes = unicode.GetBytes(str);
//Allocate memory for the chat message
int chatMsgAddress = MemFunctions.AllocateMemory(_client.Handle, unicodeBytes.Length);
// Write the message to memory
MemFunctions.MemWriteBytes(_client.Handle, chatMsgAddress, unicodeBytes);
// Write the address of the string pointer
byte[] stringAddr = BitConverter.GetBytes(chatMsgAddress);
MemFunctions.MemWriteBytes(_client.Handle, _setChatTextOpcodeAddress + 2, stringAddr);
// Get the pointer to the chat input box object
uint chatBoxObjPtr = MemFunctions.ResolveNestedPointer(_client.Handle, BaseCall, 0x1C, 0x18, 0x8, 0xC4, 0x20, 0x1C4, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x08, 0);
byte[] chatBoxObjPtrBytes = BitConverter.GetBytes(chatBoxObjPtr);
MemFunctions.MemWriteBytes(_client.Handle, _setChatTextOpcodeAddress + 7, chatBoxObjPtrBytes);
}
private int LoadAppendCharOpcode()
{
//Allocate memory for the opcode to call the sendChat function
_appendCharOpcodeAddress = MemFunctions.AllocateMemory(_client.Handle, _appendCharOpcode.Length);
//Write the opcode to memory
MemFunctions.MemWriteBytes(_client.Handle, _appendCharOpcodeAddress, _appendCharOpcode);
//Calculate relative call address of chatBoxKeyHandler()
uint relAddress = ChatBoxKeyHandlerCall - (uint)_appendCharOpcodeAddress - 9 - (uint)(_appendCharOpcode.Length / 2);
//Insert the functionAddress in opcode
byte[] functionAddress = BitConverter.GetBytes(relAddress);
MemFunctions.MemWriteBytes(_client.Handle, _appendCharOpcodeAddress + 15, functionAddress);
// Get and load the pointer to the chat system class
uint chatEntryBoxObjPtr = MemFunctions.ResolveNestedPointer(_client.Handle, BaseCall, 0x1C, 0x18, 0x8, 0xC4, 0x20, 0x1C4, 0xC, 0xC, 0xC, 0xC, 0xC, 0xC, 0xC, 0xC, 0x8, 0);
byte[] chatEntryBoxObjPtrBytes = BitConverter.GetBytes(chatEntryBoxObjPtr);
MemFunctions.MemWriteBytes(_client.Handle, _appendCharOpcodeAddress + 8, chatEntryBoxObjPtrBytes);
return(_appendCharOpcodeAddress);
}