Player spawning/initialization (called by spawning functions below) (credit: triclon)

ROM: 0x39FC0

RAM: 0x800393C0 

Inputs:

$A0 - Pointer to player structure, usually loaded from a table at 0x800DC4E0, structures start at 0x800F990 and are seperated by 0xD88 each.  There are 8 total, 1 for each player.

$A1 - Player ID (0-7)

$A2 - coordinate x?

$A3 - coordinate z?

$SP 0x0024 - Character ID (0-7)

$SP 0x0028 - Not sure, looks like rotation angle?

This function looks quite large.  One of the main inputs is the game mode (GP, time trial, VS, or battle stored at 0x800DC53C) which then branches to various parts of this function.  DeadHamster confirmed this function can be called independently to spawn players but the number of players are limited to the current mode (no more than 4 players will not display in VS or Battle mode).

2P battle mode player spawning (credit: triclon)

ROM: 0x3BC90

RAM: 0x8003B098

Inputs:

$s0 = x coordinate pointer?

$s1 = z coordinate pointer?

Looks like a gaint case/if ladder which calls the player spawning function above.

3P battle mode player spawning (credit: triclon)

ROM: 0x3C19C

RAM: 0x8003B59C

Inputs:

$s0 = x coordinate pointer?

$s1 = z coordinate pointer?

Looks like a gaint case/if ladder which calls the player spawning function above.

4P battle mode player spawning (credit: triclon)

ROM: 0x3C724

RAM: 0x8003BB24

Inputs:

$s0 = x coordinate pointer?

$s1 = z coordinate pointer?

Looks like a gaint case/if ladder which calls the player spawning function above.

Get a random item (credit: abitalive)

ROM: 0x7B9A8

RAM: 0x8007ADA8

Inputs:

$a0 = Place

$a1 = PlayerType (00 = Human, 01 = CPU

Outputs:

v0 = RandomItemRtn

Runs when you hit an item box. See abitalive’s notes (https://github.com/abitalive/MarioKart64/blob/master/Notes/item_rng.txt).

Call RNG to return a 16 bit random int (credit: ???)

ROM: ???

RAM: 0x802B7D94

Outputs:

v0  = 16 bit random int