Difference between revisions of "IS TTC"

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| size          = 8
 
| size          = 8
 
| type_key      = ISP_TTC
 
| type_key      = ISP_TTC
| type_value    = 5
+
| type_value    = 61
| direction    = in-out
+
| direction    = out
 
| category      = General purpose
 
| category      = General purpose
| prev          = [[IS_SMALL]]
+
| prev          = [[IS_OCO]]
| next          = [[IS_STA]]
+
| next          = [[IS_SLC]]
 
}}
 
}}
  

Latest revision as of 11:47, 14 February 2026

IS_TTC
General purpose 8-byte packet
Overview
Size 8
Type ISP_TTC (61)
Usage instruction
Previous packet
IS_OCO
Next packet
IS_SLC

The Target To Connection packet is sent to LFS to request information about a remote connection.

Packet details

IS_TTC packet properties
Type Name Description
byte Size 8
byte Type ISP_TTC
byte ReqI 0 unless it is an info request or a reply to an info request
byte SubT subtype, from TTC_ enumeration (e.g. TTC_SEL)
byte UCID connection's unique id (0 = local)
byte B1 B1, B2, B3 may be used in various ways depending on SubT
byte B2
byte B3

Size

The packet size, always 8 bytes.

Type

The packet type from the ISP_ enumeration, always ISP_TTC.

ReqI

For an info request, this value must bet non-zero, and LFS will include the same ReqI in its reply. Otherwise, it should be zero.

SubT

The packet's subtype, which is a value from the TTC_ enumeration.

  • TTC_NONE: Not used.
  • TTC_SEL: Send to request an IS_AXM packet for the current layout editor selection.
  • TTC_SEL_START: Send to request an IS_AXM packet very time the layout editor selection changes.
  • TTC_SEL_STOP: Send to stop receiving [IS_AXM]] packets for every layout editor selection change.

UCID

The connection's unique ID. A value of 0 represents the local connection.

Values

B1, B2, and B3 can contain data depending on the value of SubT. At the time of writing (LFS 0.8B/InSim 10), no sub-type uses those values.


Initialisation IS_ISI
Version Information IS_VER
General Purpose IS_TINY · IS_SMALL · IS_TTC
State Reporting and Requests IS_STA · IS_SFP · IS_ISM
Text Messages and Key Presses IS_SCH · IS_MSO · IS_III · IS_MST · IS_MTC · IS_MSX · IS_MSL
Voting IS_VTN
Race Tracking IS_RST · IS_REO
Autocross IS_AXI · IS_AXO · IS_UCO · IS_OCO · IS_AXM
Connection Tracking IS_NCN · IS_CNL · IS_CPR · IS_ACR · IS_NCI · IS_SLC · IS_CIM
Car Tracking IS_NPL · IS_PLP · IS_PLL · IS_LAP · IS_SPX · IS_PIT · IS_PSF · IS_PLA · IS_PEN · IS_TOC · IS_FLG · IS_PFL · IS_FIN · IS_RES · IS_NLP · IS_MCI · IS_CRS · IS_CON · IS_OBH · IS_HLV · IS_CSC
Camera Control IS_SCC · IS_CPP
Replay Control IS_RIP
Screenshots IS_SSH
InSim Buttons IS_BFN · IS_BTN · IS_BTC · IS_BTT
AI Control IS_AIC · IS_AII
Other packets IS_MOD · IS_CCH · IS_PLC · IS_HCP · IS_JRR · IS_MAL · IS_PLH · IS_IPB