@colyseus/schema/src/encoding/spec.ts

Binary state serializer with delta encoding for games

export const SWITCH_TO_STRUCTURE = 255; // (decoding collides with DELETE_AND_ADD + fieldIndex = 63)
export const TYPE_ID = 213;

/**
 * Encoding Schema field operations.
 */
export enum OPERATION {
    ADD = 128,            // (10000000) add new structure/primitive
    REPLACE = 0,          // (00000001) replace structure/primitive
    DELETE = 64,          // (01000000) delete field
    DELETE_AND_MOVE = 96, // () ArraySchema only
    MOVE_AND_ADD = 160,   // () ArraySchema only
    DELETE_AND_ADD = 192, // (11000000) DELETE field, followed by an ADD

    /**
     * Collection operations
     */
    CLEAR = 10,

    /**
     * ArraySchema operations
     */
    REVERSE = 15,
    MOVE = 32,
    DELETE_BY_REFID = 33, // This operation is only used at ENCODING time. During DECODING, DELETE_BY_REFID is converted to DELETE
    ADD_BY_REFID = 129,
}