NES, SNES, Genesis and Extra Packets

1 files changed, 93 insertions, 0 deletions

diff --git a/src/packets/snes.ts b/src/packets/snes.ts
new file mode 100644
index 0000000..07ee91b
--- /dev/null
+++ b/src/packets/snes.ts
@@ -0,0 +1,93 @@
+import { PACKET_TYPES } from "../constants";
+import { encodeString, readBoolean, readString, readUint64, readUint8, writeBoolean, writeUint64, writeUint8 } from "../utils";
+import { TASDPacket, buildBuffer } from "./utils";
+
+export class SNESClockFilterPacket implements TASDPacket {
+  constructor(public time: number) {}
+  get key() {
+    return PACKET_TYPES.SNES_CLOCK_FILTER;
+  }
+  get size() {
+    return 1;
+  }
+  static fromBuffer(buffer: Uint8Array) {
+    return new this(readUint8(buffer, 0));
+  }
+  toBuffer(g_keylen: number): Uint8Array {
+    const payload = new Uint8Array(1);
+    writeUint8(this.time, payload, 0);
+    return buildBuffer(g_keylen, this.key, payload);
+  }
+  toString(): string {
+    return `SNESClockFilter ${this.time}`;
+  }
+}
+
+export class SNESOverreadPacket implements TASDPacket {
+  constructor(public high: boolean) {}
+  get key() {
+    return PACKET_TYPES.SNES_OVERREAD;
+  }
+  get size() {
+    return 1;
+  }
+  static fromBuffer(buffer: Uint8Array) {
+    return new this(readBoolean(buffer, 0));
+  }
+  toBuffer(g_keylen: number): Uint8Array {
+    const payload = new Uint8Array(1);
+    writeBoolean(this.high, payload, 0);
+    return buildBuffer(g_keylen, this.key, payload);
+  }
+  toString(): string {
+    return `SNESOverread ${this.high}`;
+  }
+}
+
+export class SNESGameGenieCodePacket implements TASDPacket {
+  constructor(public code: string) {}
+  get key() {
+    return PACKET_TYPES.SNES_GAME_GENIE_CODE;
+  }
+  get size() {
+    return this.code.length;
+  }
+  static fromBuffer(buffer: Uint8Array) {
+    return new this(readString(buffer, 0, buffer.length));
+  }
+  toBuffer(g_keylen: number): Uint8Array {
+    return buildBuffer(g_keylen, this.key, encodeString(this.code));
+  }
+  toString(): string {
+    return `SNESGameGenieCode ${this.code}`;
+  }
+}
+
+export class SNESLatchTrainPacket implements TASDPacket {
+  constructor(public trains: bigint[]) {}
+  get key() {
+    return PACKET_TYPES.SNES_LATCH_TRAIN;
+  }
+  get size() {
+    return this.trains.length * 8;
+  }
+  static fromBuffer(buffer: Uint8Array) {
+    const trains = [];
+    for (let index = 0; index < buffer.length; index += 8) {
+      trains.push(readUint64(buffer, index));
+    }
+    return new this(trains);
+  }
+  toBuffer(g_keylen: number): Uint8Array {
+    const payload = new Uint8Array(this.size);
+    let index = 0;
+    for (const train of this.trains) {
+      writeUint64(train, payload, index);
+      index += 8;
+    }
+    return buildBuffer(g_keylen, this.key, payload);
+  }
+  toString(): string {
+    return `SNESLatchTrain ${this.trains.length}`;
+  }
+}