IS MCI

IS_MCI
Car info for multiple cars (more detailed than IS_NLP)
Overview
Size	4 + NumC * 28
Type	ISP_MCI (38)
Usage	info
Last updated	0.7A
Previous packet IS_NLP	Next packet IS_MSX

The Multi Car Info is sent by LFS as a reply to a TINY_MCI request, or at regular intervals if requested in IS_ISI.

Packet details

IS_MCI packet properties

Type	Name	Description
byte	Size	4 + NumC * 28
byte	Type	ISP_MCI
byte	ReqI	0 unless this is a reply to an TINY_MCI request
byte	NumC	number of valid CompCar structs in this packet
CompCar	Info[MCI_MAX_CARS]	car info for each player, 1 to MCI_MAX_CARS (NumC)

Size

The size of the packet varies from 4 to 452 bytes, depending on NumC. The maximum size is governed by MCI_MAX_CARS:

const int MCI_MAX_CARS = 16;

Type

The packet type from the ISP_ enumeration, always ISP_MCI.

ReqI

ReqI is equal to zero, unless the packet is a reply to a TINY_MCI request.

NumC

The number of cars in the packet.

Info

A list of CompCar structs, one for each car.

Notes

Since the maximum number of cars per packet is currently 16, you can receive up to 3 IS_MCI packets for each request or after each interval. If you need to process data for all cars, you should check the CompCar Info flags for CCI_FIRST and CCI_LAST, to make sure you include every car.

Changelog

• 0.5S: Packets support 2000 laps.
• 0.5V: Packets are available in arenas.
• 0.5X10: Minimum time interval between packets reduced to 50 ms.
• 0.5Z: Packets are sent at regular game update intervals. A CCI_LAG bit is available in the CompCar structure.
• 0.6B: Minimum time interval between packets reduced from 50 ms to 40 ms.
• 0.7A: Minimum time interval between packets reduced from 40 ms to 10 ms. Maximum cars increased from 8 to 16 - see MCI_MAX_CARS.
• 0.7F: Packets are no longer sent after clicking the replay slider.

See also

• IS_NLP