This is a packet family that is used to send/receive packets about Spells.

Server-to-Client

PACKET_REQUEST (1)

Description: Shows the spell name over the players head

Caster ID: 2
Spell ID: 2

PACKET_CAST_SELF (30)

Description: Shows the player healing himself

Caster ID: 2
Spell ID: 2
Heal Amount: 4
Caster Health Percent: 1

This below is only added if it is being sent to the caster

Caster HP: 2
Caster TP: 2

PACKET_REPLY (3)

Description: Shows the player casting a spell and updates the players HP & TP

Spell ID: 2
Caster HP: 2
Caster TP: 2

PACKET_CAST_OTHER (31)

Description: Shows another player casting a spell on another player

Victim ID: 2
Caster ID: 2
Caster Direction: 1
Spell ID: 2
Health Amount: 4
Victim Health Percent: 1
Victim HP: 2 

PACKET_EXP (33)

Description: Shows a player casting a spell and a list of players being healed

Spell ID: 2
Caster ID: 2
Caster TP: 2
Heal Amount: 2
Caster ID: 2
Caster Health Percent: 1
Caster HP: 2
FOREACH PARTY MEMBER
{
    255: 1
    255: 1
    255: 1
    255: 1
    255: 1
    Member ID: 2
    Member Health Percent: 1
    Member HP: 2
}

Client-to-Server

PACKET_REQUEST (1)

Description: Player requesting to cast a spell

Spell ID: 2
Current timestamp*: 3

PACKET_CAST_SELF (30)

Description: Player casting a self spell

Direction: 1
Spell ID: 2

PACKET_CAST_OTHER (31)

Description: Player casting a spell on another person/npc

Target Type: 1
Previous timestamp*(from request): 3
Victim ID: 2
Current timestamp*: 3

Target Type options:

• 1 = Casting on a player
• 2 = Casting on a NPC

Target Type options:

PACKET_EXP (33)

Description: Player casting a group spell

Spell ID(Short) = Spell ID that the player is trying to cast

Spell ID: 2

* go to this page for general informations about timestamp.