IS MTC - Revision history

Flame CZE at 21:52, 13 February 2026

2026-02-13T21:52:57Z

Flame CZE at 21:43, 13 February 2026

2026-02-13T21:43:39Z

Bokujishin at 19:32, 9 February 2026

2026-02-09T19:32:54Z

Bokujishin: Created page with "== Introduction == The '''MS'''g '''T'''o '''C'''onnection packet is used to send messages to a specific player, using their UCID or PLID. {| class="wiki..."

2026-02-09T19:32:38Z

Created page with "== Introduction == The '''MS'''g '''T'''o '''C'''onnection packet is used to send messages to a specific player, using their UCID or PLID. {| class="wiki..."

New page

== Introduction ==

The '''MS'''g '''T'''o '''C'''onnection packet is used to send messages to a specific player, using their [[#UCID|UCID]] or [[#PLID|PLID]].

{| class="wikitable"
|+ IS_MTC packet properties
|-
! Type !! Name !! Description
|-
| byte
| Size
| 8 + TEXT_SIZE (TEXT_SIZE = 4, 8, 12... 128)
|-
| byte
| Type
| ISP_MTC
|-
| byte
| ReqI
| 0
|-
| byte
| Sound
| sound effect (see Message Sounds below)
|-
| byte
| UCID
| connection's unique id (0 = host / 255 = all)
|-
| byte
| PLID
| player's unique id (if zero, use UCID)
|-
| byte
| Sp2
|
|-
| byte
| Sp3
|
|-
| char
| Text[TEXT_SIZE]
| up to 128 characters of text - last byte must be zero
|}

== Packet Details ==

=== Size ===

The packet has a base size of 8 bytes, and an additional 4-128 bytes for the message.

=== Type ===

The packet type from the [[InSim_enumerations#ISP|ISP_]] enumeration, always ISP_MTC.

=== ReqI ===

ReqI is always equal to zero.

=== Sound ===

The message can play a sound when displayed in LFS. It should be one of the values in the [[InSim_enumerations#SND|SND_]] enumeration.

=== UCID ===

The unique connection ID of the message recipient. If zero, the message is sent to the host. If 255, the message is sent to every connected player.

This value is ignored if [[#PLID|PLID]] is not zero.

=== PLID ===

The player ID of the message recipient. If zero, [[#UCID|UCID]] is used instead.

=== Text ===

The bytes representing the message. The message is padded with zeros. The last byte is always zero.

[[Category:InSim packets]]

@@ Line 3: / Line 3: @@
 | sizetext      = 8 + {{var|TEXT_SIZE}} ({{var|TEXT_SIZE}} = 4, 8, 12... 128)
 | type_key      = ISP_MTC
-| type_value    = 13
+| type_value    = 14
 | direction     = out
 | category      = Text messages and key presses
 | prev          = [[IS_MST]]
-| next          = [[IS_MSX]]
+| next          = [[IS_MOD]]
 }}

@@ Line 1: / Line 1: @@
-== Introduction ==
+{{Infobox InSim packet
 The '''M'''sg '''T'''o '''C'''onnection packet is used to send messages to a specific player, using their [[#UCID|UCID]] or [[#PLID|PLID]].
 {| class="wikitable"
@@ Line 44: / Line 55: @@
 | up to 128 characters of text - last byte must be zero
 |}
 === Size ===
@@ Line 76: / Line 85: @@
 The bytes representing the message. The message is padded with zeros. The last byte is always zero.
 [[Category:InSim packets]]