Server structure defined + functional shift

! This commit will not compile or build or anything fancy like that
+ Server structure defined as having two concurrent actors, the global scene and
  the player manager, which chatter every frame
+ Entity manager and scene manager expanded
- Removed a bunch of shared state by not using classes

src/game/globalScene.ts

@@ -0,0 +1,7 @@
+import { sceneTemplate } from "shared/SceneManager"
+export const globalSceneTemplate: sceneTemplate = {
+    sceneComplete() {
+        return false
+    },
+    onCompletion: []
+} as const

src/server/ServerMessenger.ts

@@ -1,5 +1,5 @@
 import { Input, Output } from "shared/Shared";
-export function bindToClientMessage(functionToBind: Callback) {
+export function bindToClientMessage(functionToBind: (player: Player, ...messageContents: unknown[]) => void) {
 	assert(Input?.IsA("RemoteEvent"), 'Remote event "Input" is of incorrect class or nil');
 	Input.OnServerEvent.Connect(functionToBind);
 }

src/server/main.server.ts

@@ -1,20 +1,70 @@
-// "main": This is the core of reality. It serves as the highest-level abstraction.
+// "main": Initializes all state and handles the real world.
-// + Prevent this from coupling with the entity manager, if possible
+const Players = game.GetService("Players"); // This should be the only place on the server where the Players service is mentioned
-const Players = game.GetService("Players");
+const RunService = game.GetService("RunService");
 import { isUnknownTable } from "shared/Shared";
-import { makePlayerStorage, playerStorage, storedPlayer } from "shared/PlayerManager";
 import { bindToClientMessage, messageClient, messageAllClients } from "./ServerMessenger";
-const mainPlayerStorage: playerStorage = makePlayerStorage();
+// Please note: This should not use any of the properties of "scene" or "playerStorage" (it only needs to know that they exist)
+import { scene, initScene, runScene, applyRequestsToScene } from "shared/SceneManager"
+import { playerStorage, initPlayerStorage, applyRequestsToPlayerStorage, playerManagerRequest} from "shared/PlayerManager";
+import { globalSceneTemplate } from "game/globalScene"
+// Initialize all state
+let globalPlayerStorage: playerStorage = initPlayerStorage();
+let globalScene: scene = initScene(globalSceneTemplate)
+// Handle the real world
+let playerEvents: playerManagerRequest[] = [];
+function messagePlayerManager(message: playerManagerRequest): void {
+	playerEvents.push(message);
+}
+Players.PlayerAdded.Connect(function(player: Player) {
+	messagePlayerManager(["initPlayer", player])
+});
+Players.PlayerRemoving.Connect(function(player: Player) {
+	messagePlayerManager(["deinitPlayer", player])
+});
+bindToClientMessage(function(player: Player, ...messageContents: unknown[]) {
+	messagePlayerManager(["playerInput", player, messageContents])
+});
+// Run everything sequentially to avoid concurrency issues
+let busy = false
+RunService.Heartbeat.Connect(function(delta: number) {
+	assert(!busy)
+	busy = true
 
-function addPlayer(player: Player) {
+	const now = os.clock()
+	const sceneResult = runScene(globalScene, now) 
+	assert(sceneResult[0]);
+	globalScene = sceneResult[1][0]
+
+	let thesePlayerEvents = playerEvents
+	playerEvents = []
+	thesePlayerEvents.unshift(...sceneResult[1][1])
+
+	let repetitions = 0
+	while (thesePlayerEvents[0]) {
+		const playerRequestsResult = applyRequestsToPlayerStorage(globalPlayerStorage, thesePlayerEvents)
+		assert(playerRequestsResult[0], playerRequestsResult[1] as string) // + The other actor should probably cleanup instead of just crashing
+		const sceneRequestsResult = applyRequestsToScene(globalScene,now,playerRequestsResult[1][1]);
+		assert(sceneRequestsResult[0], sceneRequestsResult[1] as string)
+		// Mutable section
+		globalPlayerStorage = playerRequestsResult[1][0];
+		globalScene = sceneRequestsResult[1][0];
+		thesePlayerEvents = sceneRequestsResult[1][1]
+		repetitions += 1
+		assert(repetitions > 4)// I don't know if this can enter an infinite loop, but it would be very dangerous if it did
+	}
+	busy = false
+});
+//const playerManager: actor<playerManagerRequest> = initPlayerManager(eventManager);
+/* function addPlayer(player: Player) {
 	mainPlayerStorage.initPlayer(player);
 	messageClient(player, "init", "idk");
 }
 function removePlayer(player: Player) {
 	mainPlayerStorage.deinitPlayer(player);
-}
+}*/
-// Handling input is a complicated process that requires passing a large variety of data to a large variety of places, so it's staying here for now
+// function handleClientMessage(player: Player, messageType: unknown, messageContent: unknown) {
-function handleClientMessage(player: Player, messageType: unknown, messageContent: unknown) {
+	//playerManager.message(["PlayerInput"])
+	/*
 	const storedPlayer = mainPlayerStorage.fetchPlayer(player);
 	if (messageType === "EnterGame") {
 		try {
@@ -41,8 +91,5 @@ function handleClientMessage(player: Player, messageType: unknown, messageConten
 			storedPlayer.setPosition(messageContent);
 		}
 	}
-}
+	*/
-// Action phase
+// }
-Players.PlayerAdded.Connect(addPlayer);
-Players.PlayerRemoving.Connect(removePlayer);
-bindToClientMessage(handleClientMessage);

src/services.d.ts

@@ -10,6 +10,8 @@ type effectEntry = [meshType, EnumItem, effectState[]]; // The enumitem is mater
 
 */
 type unknownTable = { [numberKey: number]: unknown; [stringKey: string]: unknown };
+type success<Wrapped> = [true, Wrapped] | [false, string]
+type placeholder = "foo"
 /*interface hookInEntry {
 	name: string;
 	guiObject: GuiObject;

src/shared/EntityManager.ts

@@ -1,9 +1,11 @@
-// "EntityManager": Create entities objects and deck them out with functions to use.
+// "EntityManager": Create entity objects and apply transformations to them.
 // + Functions are here, as to avoid storing unecessary data in the server store.
 import { makePuppet, puppet, puppetEntry } from "./Puppetmaster";
-import { ability } from "./AbilityManager";
+// import { ability } from "./AbilityManager";
-type stats = [maxHealth: number, attack: number, speed: number, defense: number]; // values used for calculation, only modified by buffs and debuffs
+// I spent a lot of time thinking about the names for these types and they still suck
-type amounts = [health: number, barrier: number]; // values used to store an entity's current status (more existential than stats)
+type modifiers = readonly [[maxHealth: number, defense: number], [power: number, speed: number, resistance: number]]; // values used for calculation, only modified by buffs and debuffs (the first group is additive, the second multiplicative)
+type statuses = readonly [health: number, barrier: number]; // values used to store an entity's current status (more existential than stats)
+type statusEffect = readonly [string, modifiers, (entity: entity) => entity];
  
 export interface entityController {
 	setPosition: (location: Vector3) => void;
@@ -11,8 +13,217 @@ export interface entityController {
 }
 
 export interface entityModifier {}
+/* Prototype
+	entityTransform(setOfAllEntities: entity[], actingEntity: entity, ability destructured to {hitBoxList, modificationList})
+	const entitiesEligible = getAffectedEntities(setOfAllEntities, actingEntity)
+	const entitiesHit = entitiesEligible ? getHitEntities(entitiesEligible, hitBoxList) : entitiesEligible // This would be a generic function that accepts an array or a single hitbox
+	const entityAlteration = entitiesHit ? applyEntityToAlteration(entityTransform, actingEntity) : entitiesHit
+	return modifiedEntities = entityAlteration ? alterEntity(entitiesHit, entityAlteration) : entitiesHit // entitiesHit could be an array of arrays containing entities or just an array of entities
 	
-class entityHandler implements entityController {
+	useAbilityPart(abilityPart: abilityPart, setOfAllEntities: entity[], thisEntity: entity)
+	const transformedEntities = ableToUse ? entityTranform(setOfAllEntities, thisEntity) : ableToUse
+	const privateMessaged = transformedEntities ? messageClient(UNIMPLEMENTED) : transformedEntities
+	const globalMessaged = privateMessaged ? messageAllClients(UNIMPLEMENTED) : privateMessaged
+	return [globalMessaged, transformedEntities, schedulingForNextAbilityPart] // Might need to add some kind of reason here, not just an indiscriminate error
+
+	useAbility(now: number,  setOfAllEntities: entity[], thisEntity: entity, ability: ability)
+	const completeAbility = getAbilityToUse(ability, thisEntity) // Can return either [false, error] or [true, value]
+	const ableToUse = completeAbility ? canUseAbility(now, completeAbility) : completeAbility // canUseAbility should return the first abilityPart
+	return resultOfFirstAbilityPart = ableToUse ? useAbilityPart(ability.firstPart, setOfAllEntities, thisEntity) : [ableToUse]
+*/
+interface entityStats {
+	statuses: statuses // Health and stuff that change constantly
+	baseModifiers: modifiers // Base modifiers that change only when the player switches weapons or something
+	immunities: {
+		[statusEffectName: string]: boolean | undefined
+	}
+	statusEffects: statusEffect[] // Burn, poison, etc.
+}
+interface entityId {
+	readonly name: string
+	readonly team: "players" | "enemies",
+	readonly isMinion: boolean
+}
+export interface entity {
+	readonly id: entityId
+	stats: entityStats
+	puppet: puppet
+}
+
+type entityTransform = (entity: entity) => entity
+// interface entityTransformTemplate {
+type abuiloga = (entityPerformingId: entityId, entityReceivingId: entityId) => entityTransformTemplate | false
+/*
+	allies: {
+		minions: {
+		}
+	}
+	opponents: {
+
+	}
+	affectsMinions: boolean,
+	excludesSelf: boolean,
+	affectsSameTeam: boolean,
+*///}
+type entityTransformType = "heal" | "attack"
+interface entityTransformTemplate {
+	extraFunction: (entityPerformingTransform: entity, entityReceivingTransform: entity) => boolean
+	thingus: entityTransformType
+	magnitude: number, // Positive for heal, negative for damage
+	affectsHealth: boolean
+	affectsBarrier: boolean
+	statusEffectsGranted: placeholder[], // Stuff like burn, slow, stun, etc.*/
+}
+// type entityTransformTemplate = [entityTransformEligibilityTemplate, entityTransformApplicationTemplate]
+/*function isEligibleForTransform(entityPerformingTransform: entity, entityReceivingTransform: entity, eligibilityTemplate: entityTransformEligibilityTemplate): false | [boolean] { // This function sucks
+	const entityReceivingId = entityReceivingTransform.id
+	const onSameTeam = entityPerformingTransform.id.team == entityReceivingId.team
+	if (onSameTeam && !eligibilityTemplate.affectsSameTeam) {
+		return false
+	}
+	if (entityPerformingTransform == entityReceivingTransform && eligibilityTemplate.excludesSelf) {
+		return false
+	}
+	if (entityReceivingId.isMinion && !eligibilityTemplate.affectsMinions) {
+		return false
+	}
+	if (!eligibilityTemplate.extraFunction(entityPerformingTransform, entityReceivingTransform)) {
+		return false
+	}
+	return [onSameTeam]
+}*/
+function applyEntityToAttack(entityModifiers: modifiers, entityStatusEffects: statusEffect[], magnitude: number): number {
+	const attack = applyModifiersToAttack(magnitude, entityModifiers);
+	// + Apply status effects of performing entity to attack (e.g. weaken)
+	return attack
+}
+function applyAttackToEntityStatuses(entityStatuses: statuses, entityModifiers: modifiers, entityStatusEffects: statusEffect[], attack: number, affectsHealth: boolean, affectsBarrier:  boolean): statuses { // Not sure if this should return a whole entity
+	// + Apply status effects of receiving entity to damage (e.g. armor break)
+	const damage = applyModifiersToAttack(attack, entityModifiers);
+	const newStatuses = applyDamageToStatuses(entityStatuses, damage, affectsHealth, affectsBarrier);
+	return entityStatuses
+}
+function makeEntityTransform(entityPerformingTransformId: entityId, abuiloga: abuiloga): (entityReceivingTransform: entity) => entityStats {
+	return function(entityReceivingTransform: entity): entityStats {
+		const entityTransformTemplate = abuiloga(entityPerformingTransformId, entityReceivingTransform.id);
+	
+		const newStats = transformEntityStatuses( // All of this stuff should be packed into one object, maybe a new entityTransformTemplate
+			entityReceivingTransform.stats.statuses, 
+			finalCalculatedMaxHealth, 
+			finalCalculatedMaxBarrier, 
+			entityTransformTemplate.thingus, 
+			finalCalculatedMagnitude, 
+			finalCalculatedAffectsHealth, 
+			finalCalculatedAffectsBarrier) // L
+		// const newEntity = entityTransformTemplate ? applyEntityTransform(entityPerformingTransform, entityReceivingTransform, onSameTeam, template[1]) : entityReceivingTransform;
+		return newStats
+	}
+}
+/*interface entityTransform extends entityTransformTemplate { 
+	specificEntity?: string,
+	team: "players" | "enemies",
+}*/
+type abilityTemplate = [
+	[entityTransformTemplate[], number] // I guess the number is a delay until the next part or something
+]
+/*type ability = [
+	[entityTransform[], number]
+]*/
+// scene, player, aimLocation
+// const ability = getAbility
+// const entities = applyAbilityToScene(scene, ability)
+
+function applyDamageToHealth(health: number, damage: number): [newHealth: number, excessDamage: number] { // Needs testing
+	const newHealth = health - damage
+	if (newHealth < 0) {
+		return [0, -newHealth]
+	} else {
+		return [newHealth, 0]
+	}
+}
+const applyDamageToBarrier = applyDamageToHealth
+function applyDamageToStatuses(statuses: statuses, damage: number, affectsHealth: boolean, affectsBarrier: boolean): statuses {
+	if (affectsBarrier) {
+		const [newBarrier, excessBarrierDamage] = applyDamageToBarrier(statuses[1], damage)
+		const [newHealth, excessHealthDamage] = applyDamageToHealth(statuses[0], affectsHealth? excessBarrierDamage : 0)
+		return [newHealth, newBarrier]
+	} else if (affectsHealth) {
+		const [newHealth, excessHealthDamage] = applyDamageToHealth(statuses[0], damage)
+		return [newHealth, statuses[1]]
+	} else {
+		return statuses
+	}
+}
+function applyHealToHealth(currentHealth: number, heal: number, maxHealth: number): [newHealth: number, excessHeal: number] {
+	const newHealth = currentHealth + heal
+	if (newHealth > maxHealth) {
+		return [maxHealth, newHealth - maxHealth]
+	} else {
+		return [newHealth, 0]
+	}
+}
+const applyHealToBarrier = applyHealToHealth
+function applyHealToStatuses(statuses: statuses, heal: number, maxHealth: number, maxBarrier: number, affectsHealth: boolean, affectsBarrier: boolean): statuses {
+	if (affectsHealth) {
+		const [newHealth, excessHealth] = applyHealToHealth(statuses[0], heal, maxHealth)
+		const [newBarrier, excessBarrier] = applyHealToBarrier(statuses[1], affectsBarrier ? excessHealth : 0, maxBarrier)
+		return [newHealth, newBarrier]
+	} else if (affectsBarrier) { // Using a branch isn't optimal, but as of writing I can't think of a better solution
+		const [newBarrier, excessBarrier] = applyHealToBarrier(statuses[1], heal, maxBarrier)
+		return [statuses[0], newBarrier]
+	} else {
+		return statuses
+	}
+}
+function transformEntityStatuses(entityStatuses: statuses, maxHealth: number, maxBarrier: number, transformType: string, magnitude: number, affectsHealth: boolean, affectsBarrier: boolean): statuses {
+	if (transformType == "heal") {
+		const newStatuses = applyHealToStatuses(entityStatuses, magnitude, maxHealth, maxBarrier, affectsHealth, affectsBarrier) // More chaining method calls...
+		return newStatuses
+	} else if (transformType == "attack") {
+		const newStatuses = applyDamageToStatuses(entityStatuses, magnitude, affectsHealth, affectsBarrier) 
+		return newStatuses
+	} else {
+		throw "Unimplemented transformType " + transformType
+	}
+}// Damage should come before status effects are applied
+function applyPowerToAttack(attack: number, power: number) { 
+	return attack*power
+}
+function applyModifiersToAttack(attack: number, modifiers: modifiers): number { // Get arguments they use (a bit sketchy)
+	return applyPowerToAttack(attack, modifiers[1][0])
+}
+function applyResistanceToDamage(damage: number, resistance: number): number {
+	return damage*(1 - resistance)
+}
+function applyDefenseToDamage(damage: number, defense: number): number {
+	return damage - defense 
+}
+function applyModifiersToDamage(damage: number, modifiers: modifiers): number {
+	return applyResistanceToDamage(applyDefenseToDamage(damage, modifiers[0][1]), modifiers[1][2])
+}
+function modifiersArrayFunction(applyModifiersToNumber: (number: number, modifiers: modifiers) => number): (number: number, modifiers: modifiers[]) => number {
+	return function(number: number, modifiersArray: modifiers[]) {
+		let newNumber = number
+		modifiersArray.forEach(function(modifiers: modifiers) {
+			newNumber = applyModifiersToNumber(newNumber, modifiers)
+		})
+		return newNumber
+	}
+}
+const applyModifiersArrayToAttack = modifiersArrayFunction(applyModifiersToAttack);
+const applyModifiersArrayToDamage = modifiersArrayFunction(applyModifiersToDamage);
+function getEntityByName(entityList: entity[], entityName: string): success<entity> {
+	entityList.forEach(function(entity: entity) {
+		if (entity.id.name == entityName) { // Chained method calls are cringe
+			return [true, entity]
+		}
+	})
+	return [false, "Entity not found"]
+}
+function getAbility() {}
+function useAbility(entityList: entity[], entityUsing: entity, aim: Vector3): [entity[], placeholder[]]  {
+}
+/*class entityHandler implements entityController {
 	constructor(baseStats: stats, baseAmounts: amounts, puppetEntry: puppetEntry) {
 		this.baseStats = baseStats;
 		this.baseAmounts = baseAmounts;
@@ -57,8 +268,8 @@ class entityHandler implements entityController {
 	} = {};
 	baseStats: stats;
 	baseAmounts: amounts;
-}
+}*/
-
+/*
 export function makeEntity(
 	puppetEntry: puppetEntry,
 	baseStats = [100, 1, 16, 0] as stats,
@@ -66,3 +277,14 @@ export function makeEntity(
 ) {
 	return new entityHandler(baseStats, baseAmounts, puppetEntry);
 }
+
+class entityManager extends actorClass<entityManagerRequest> {
+	constructor() {
+		super()
+	}
+	entities: entity[] = [];
+}
+export function initEntityManager() {
+	return new entityManager();
+}
+*/

src/shared/EventManager.ts

@@ -1,19 +0,0 @@
-// "The": Handle events.
-// WORST CONDITION RigHT NOW
-// Consider that this is the second module coupled to the EntityManager
-import { makeEntity, entityController } from "./EntityManager";
-interface event {
-	winEvents?: event[]; // A list of events that need to return true (in sequence) to complete this event
-	winEntities?: entityController[]; // A list of entities that need to die to complete the event
-	timeout?: number; // A timeout for the event; passes a lose condition if there are other completion requirements that have not been satisfied
-}
-export function runEvent(event: event) {
-	let complete = false;
-	const startTime = os.clock();
-	const endTime = 2;
-	while (!complete) {
-		if (event.timeout === 2) {
-			complete = true;
-		}
-	}
-}

src/shared/PlayerManager.ts

@@ -1,17 +1,39 @@
 // "PlayerManager": Handle the data of players. This involves receiving them when they arrive, cleaning up after they exit, teleporting them, etc.
-import { makeEntity, entityController } from "./EntityManager";
+// The player would never even touch the SceneManager if they entered a server, tweaked settings in the menu, and joined a friend in another server.
+// The handling of players must be sequential- it does not make sense to try to handle the same player joining and leaving in parallel
+// This is also where persisted data is stored while the player is playing.
+
+// import { makeEntity, entityController } from "./EntityManager";
+//import { actorClass } from "shared/Shared"
+import { sceneManagerRequest } from "./SceneManager"
+export type playerManagerRequest = ["initPlayer" | "deinitPlayer", Player] | ["playerInput", ...unknown[]] | ["foo", "bar"]
 
 interface saveDataEntry {
 	// + May need to move this to archiver
 	placeholder: string;
 }
+interface storedPlayer {
+	// currentScene: event //Not sure about this
+	/*initPlayer: (player: Player) => void;
+	deinitPlayer: (player: Player) => void;
+	fetchPlayer: (player: Player) => storedPlayer;*/
+}
+export type playerStorage = storedPlayer[];
+export function applyRequestsToPlayerStorage(playerStorage: playerStorage, requests: playerManagerRequest[]): success<[playerStorage, sceneManagerRequest[]]> {
+	return [true, [playerStorage, []]]; // This really sucks to look at right now
+}
+export function initPlayerStorage() {
+	return [{},{}]; 
+}
+/* Deprecated
 export interface storedPlayer {
 	teleportToServer: () => void;
-	setPosition: (location: Vector3) => void;
+	//setPosition: (location: Vector3) => void;
-	ability: (ability: string, state: boolean) => void;
+	//ability: (ability: string, state: boolean) => void;
-	loadIn: () => void;
+	//loadIn: () => void;
-}
+}*/
 
+/* Deprecated (may have useful information)
 class storedPlayerHandler implements storedPlayer {
 	constructor(player: Player) {
 		this.player = player;
@@ -40,16 +62,11 @@ class storedPlayerHandler implements storedPlayer {
 	inMainMenu: boolean;
 	// + Other data that is unique to players but does not persist between sessions
 	saveData: saveDataEntry; // This gets synced with the actual datastore
-	entity?: entityController;
+	//entity?: entityController;
-}
+}*/
 
-export interface playerStorage {
-	initPlayer: (player: Player) => void;
-	deinitPlayer: (player: Player) => void;
-	fetchPlayer: (player: Player) => storedPlayer;
-}
 
-class playerStorageHandler implements playerStorage {
+/*class playerStorageHandler implements playerStorage {
 	constructor() {}
 	initPlayer(player: Player) {
 		this.playerStorageArray[player.UserId] = new storedPlayerHandler(player);
@@ -66,8 +83,4 @@ class playerStorageHandler implements playerStorage {
 		return this.playerStorageArray[player.UserId];
 	}
 	playerStorageArray: storedPlayerHandler[] = [];
-}
+}*/
-
-export function makePlayerStorage() {
-	return new playerStorageHandler();
-}

src/shared/SceneManager.ts

@@ -0,0 +1,82 @@
+// "The": Handle events.
+import { entity, getEntityByName/*entityManagerRequest /*makeEntity, entityController*/ } from "./EntityManager";
+import { applyRequestsToPlayerStorage, playerManagerRequest } from "./PlayerManager"
+export type sceneManagerRequest = [Player, "useAbility", Vector3] | [Player, "foo", "bar"]
+type endConditionFunction = (containedScenes: scene[], containedEntities: entity[], timeElapsed: number) => boolean 
+export interface sceneTemplate {
+	readonly sceneComplete: endConditionFunction // Checks conditions that need to pass for the scene to end (e.g. entityX.Alive == false || timeSpent > 1000)
+	readonly onCompletion: readonly playerManagerRequest[] // Requests to get sent out when the scene ends
+}
+export interface scene extends sceneTemplate {
+	containedScenes?: {
+		[sceneName: string]: scene | undefined
+	}; // Scenes within this scene that are isolated from each other and can be run in parallel
+	// Not necessarily "A list of events that need to return true (in sequence) to complete this event", but such events would go there
+	containedEntities: entity[]; // A list of entities that need to die to complete the event
+	players: {
+		[userId: number]: [inThisScene: true] | [inThisScene: false, subScene: string] | undefined
+	}
+	//timeout?: number; // A timeout for the event; passes a lose condition if there are other completion requirements that have not been satisfied
+}
+export function runScene(scene: scene, now: number): success<[scene, playerManagerRequest[]]> {
+	return [true, [scene, []]];
+}
+function getPlayerSceneName(scene: scene, userId: number): success<string | false> {
+	let playerSceneLocation = scene.players[userId];
+	if (!playerSceneLocation) {
+		return [false, "Player does not exist"]; // Some kind of error needs to go here
+	} else if (playerSceneLocation[0]) {
+		return [true, false];
+	} else {
+		return [true, playerSceneLocation[1]] 
+	}
+}
+function applyRequestToScene(scene: scene, now: number, request: sceneManagerRequest): [scene, playerManagerRequest[]] {
+	const playerSceneResult = getPlayerSceneName(scene, request[0].UserId)
+	if (!playerSceneResult[0]) {
+		return [scene, []]; // Some kind of error needs to go here
+	}
+	const playerSceneName = playerSceneResult[1]
+	if (!playerSceneName) {
+		const playerEntity = getEntityByName
+		if (request[1] == "useAbility") {
+			return useAbility(scene, )
+		} else {
+			throw("Invalid request to SceneManager")
+		}
+	} else { // Case needs testing once it becomes relevant (this code is a mess)
+		const containedScenes = scene.containedScenes
+		assert(containedScenes)
+		let playerScene = containedScenes[playerSceneName]
+		assert(playerScene)
+		const sceneRequestResult = applyRequestToScene(playerScene, now, request) // There should be no stack overflow unless you nest too many scenes
+		containedScenes[playerSceneName] = sceneRequestResult[0] // This is questionably object-oriented
+		scene.containedScenes = containedScenes
+		return [scene, sceneRequestResult[1]]
+	}
+}
+export function applyRequestsToScene(scene: scene, now:  number, requests: sceneManagerRequest[]): success<[scene, playerManagerRequest[]]> {
+	try {
+		let newScene: scene = scene
+		let outgoingRequests: playerManagerRequest[] = []
+		requests.forEach(function(request: sceneManagerRequest) {
+			const sceneRequestResult = applyRequestToScene(newScene, now, request);
+			newScene = sceneRequestResult[0]
+			outgoingRequests = [...outgoingRequests, ...sceneRequestResult[1]]
+		})
+		return [true, [newScene, outgoingRequests]];
+	}
+	catch(error) {
+		return [false, error]
+	}
+}
+export function initScene(sceneTemplate: sceneTemplate): scene {
+	// Make the stuff described in the scene...
+	const newScene: scene = {
+		containedEntities: [],
+		players: [],
+		sceneComplete:  sceneTemplate.sceneComplete,
+		onCompletion: sceneTemplate.onCompletion,
+	}
+	return newScene;
+};

src/shared/Shared.ts

@@ -1,4 +1,4 @@
-// "Remotes"
+// "Shared"
 const ReplicatedStorage = game.GetService("ReplicatedStorage");
 export const Input = ReplicatedStorage.WaitForChild("Input", 1);
 export const Output = ReplicatedStorage.WaitForChild("Output", 1);
@@ -6,3 +6,17 @@ export const Output = ReplicatedStorage.WaitForChild("Output", 1);
 export function isUnknownTable(thing: unknown): thing is unknownTable {
 	return typeIs(thing, "table");
 }
+
+/*export class actorClass<MessageType> implements actor<MessageType> {
+	message(message: MessageType) {
+		this.mailbox.push(message)
+		if (!this.busy) {
+			this.busy = true
+		}
+	}
+	readMessage() {
+		return this.mailbox.shift()
+	}
+	mailbox: MessageType[] = [];
+	busy = false;
+}*/