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48639942f6
330 non-vendor files had minor formatting inconsistencies (comment alignment, whitespace). No logic changes.
75 lines
2.2 KiB
Go
75 lines
2.2 KiB
Go
package scenario
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import (
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"fmt"
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"erupe-ce/common/byteframe"
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"erupe-ce/common/stringsupport"
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"erupe-ce/cmd/protbot/protocol"
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)
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// ChatMessage holds a parsed incoming chat message.
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type ChatMessage struct {
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ChatType uint8
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SenderName string
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Message string
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}
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// SendChat sends a chat message via MSG_SYS_CAST_BINARY with a MsgBinChat payload.
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// broadcastType controls delivery scope: 0x03 = stage, 0x06 = world.
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func SendChat(ch *protocol.ChannelConn, broadcastType, chatType uint8, message, senderName string) error {
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payload := protocol.BuildChatPayload(chatType, message, senderName)
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pkt := protocol.BuildCastBinaryPacket(broadcastType, 1, payload)
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fmt.Printf("[chat] Sending chat (type=%d, broadcast=%d): %s\n", chatType, broadcastType, message)
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return ch.SendPacket(pkt)
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}
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// ChatCallback is invoked when a chat message is received.
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type ChatCallback func(msg ChatMessage)
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// ListenChat registers a handler on MSG_SYS_CASTED_BINARY that parses chat
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// messages (messageType=1) and invokes the callback.
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func ListenChat(ch *protocol.ChannelConn, cb ChatCallback) {
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ch.OnPacket(protocol.MSG_SYS_CASTED_BINARY, func(opcode uint16, data []byte) {
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// MSG_SYS_CASTED_BINARY layout from server:
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// uint32 unk
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// uint8 broadcastType
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// uint8 messageType
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// uint16 dataSize
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// []byte payload
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if len(data) < 8 {
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return
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}
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messageType := data[5]
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if messageType != 1 { // Only handle chat messages.
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return
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}
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bf := byteframe.NewByteFrameFromBytes(data)
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_ = bf.ReadUint32() // unk
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_ = bf.ReadUint8() // broadcastType
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_ = bf.ReadUint8() // messageType
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dataSize := bf.ReadUint16()
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if dataSize == 0 {
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return
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}
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payload := bf.ReadBytes(uint(dataSize))
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// Parse MsgBinChat inner payload.
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pbf := byteframe.NewByteFrameFromBytes(payload)
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_ = pbf.ReadUint8() // unk0
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chatType := pbf.ReadUint8()
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_ = pbf.ReadUint16() // flags
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_ = pbf.ReadUint16() // senderNameLen
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_ = pbf.ReadUint16() // messageLen
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msg := stringsupport.SJISToUTF8Lossy(pbf.ReadNullTerminatedBytes())
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sender := stringsupport.SJISToUTF8Lossy(pbf.ReadNullTerminatedBytes())
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cb(ChatMessage{
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ChatType: chatType,
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SenderName: sender,
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Message: msg,
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})
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})
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}
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