diff --git a/src/Ecs/Lockstep.ts b/src/Ecs/Lockstep.ts
index 71e42fa..26e6950 100644
--- a/src/Ecs/Lockstep.ts
+++ b/src/Ecs/Lockstep.ts
@@ -80,6 +80,24 @@ export class LockstepState {
}
}
+export class Playback {
+ private frame = 0;
+
+ public constructor(
+ private state: State,
+ private inputLog: Input[],
+ private engine: LockstepProcessor,
+ ) {}
+
+ public getNextState(): State {
+ if(this.frame < this.inputLog.length) {
+ this.engine.advanceState(this.state, this.inputLog[this.frame]);
+ this.frame++;
+ }
+ return this.state;
+ }
+}
+
export class LockstepLoop> {
}