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update-packet.ts
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update-packet.ts
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import { Writer } from '../../writer';
import { Reader } from '../../reader';
import { PacketType } from '../../packet-type';
import { Packet } from '../../packet';
import { GroundTileData } from '../../data/ground-tile-data';
import { ObjectData } from '../../data/object-data';
/**
* Received when an update even occurs. Some events include
* + One or more new objects have entered the map (become visible)
* + One or more objects have left the map (become invisible)
* + New tiles are visible
*/
export class UpdatePacket implements Packet {
type = PacketType.UPDATE;
propagate = true;
//#region packet-specific members
/**
* The new tiles which are visible.
*/
tiles: GroundTileData[];
/**
* The new objects which have entered the map (become visible).
*/
newObjects: ObjectData[];
/**
* The visible objects which have left the map (become invisible).
*/
drops: number[];
//#endregion
constructor() {
this.tiles = [];
this.newObjects = [];
this.drops = [];
}
read(reader: Reader): void {
const tilesLen = reader.readShort();
this.tiles = new Array<GroundTileData>(tilesLen);
for (let i = 0; i < tilesLen; i++) {
const gd = new GroundTileData();
gd.read(reader);
this.tiles[i] = gd;
}
const newObjectsLen = reader.readShort();
this.newObjects = new Array<ObjectData>(newObjectsLen);
for (let i = 0; i < newObjectsLen; i++) {
const od = new ObjectData();
od.read(reader);
this.newObjects[i] = od;
}
const dropsLen = reader.readShort();
this.drops = new Array<number>(dropsLen);
for (let i = 0; i < dropsLen; i++) {
this.drops[i] = reader.readInt32();
}
}
write(writer: Writer): void {
writer.writeShort(this.tiles.length);
for (const tile of this.tiles) {
tile.write(writer);
}
writer.writeShort(this.newObjects.length);
for (const obj of this.newObjects) {
obj.write(writer);
}
writer.writeShort(this.drops.length);
for (const drop of this.drops) {
writer.writeInt32(drop);
}
}
}