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GDevelop/Extensions/Multiplayer/tests/multiplayer.spec.js
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// @ts-check
describe('Multiplayer', () => {
const delay = (ms) => new Promise((res) => setTimeout(res, ms));
/**
* @param {{name: string}} settings
* @returns {SceneAndExtensionsData}
*/
const getFakeSceneAndExtensionData = ({ name }) => ({
sceneData: {
layers: [
{
name: '',
visibility: true,
effects: [],
cameras: [],
ambientLightColorR: 0,
ambientLightColorG: 0,
ambientLightColorB: 0,
isLightingLayer: false,
followBaseLayerCamera: true,
},
],
r: 0,
v: 0,
b: 0,
mangledName: name,
name: name,
stopSoundsOnStartup: false,
title: '',
behaviorsSharedData: [],
objects: [
{
type: 'Sprite',
name: 'MySpriteObject',
behaviors: [
{
name: 'MultiplayerObject',
type: 'Multiplayer::MultiplayerObjectBehavior',
playerNumber: 0,
actionOnPlayerDisconnect: 'Destroy',
},
{
name: 'DummyBehavior',
type: 'MyDummyExtension::DummyBehavior',
},
],
effects: [],
// @ts-expect-error ts-migrate(2322) FIXME: Type '{ type: string; name: string; behaviors: nev... Remove this comment to see the full error message
animations: [],
variables: [],
},
],
instances: [],
variables: [],
usedResources: [],
},
usedExtensionsWithVariablesData: [],
});
/**
*
* @param {gdjs.RuntimeScene} scene
* @param {string} objectName
* @returns {{object: gdjs.RuntimeObject, behavior: gdjs.MultiplayerObjectRuntimeBehavior}[]}
*/
const getObjectAndMultiplayerBehaviorsFromScene = (scene, objectName) => {
const objects = scene.getObjects(objectName);
if (!objects)
throw new Error(`No object with name ${objectName} found in scene`);
return objects.map((object) => {
/** @type {gdjs.MultiplayerObjectRuntimeBehavior | null} */
// @ts-ignore - We know this returns a MultiplayerObjectRuntimeBehavior
const behavior = object.getBehavior('MultiplayerObject');
if (!behavior)
throw new Error(
`No MultiplayerObject behavior found on object ${objectName}`
);
return { object, behavior };
});
};
const makeTestRuntimeSceneWithNetworkId = (timeDelta = 1000 / 60) => {
const runtimeGame = gdjs.getPixiRuntimeGame();
gdjs.projectData = {
// @ts-ignore - we don't set all project props.
properties: {
projectUuid: 'fake-hardcoded-project-uuid',
},
};
const runtimeScene = new gdjs.TestRuntimeScene(runtimeGame);
runtimeScene.loadFromScene(
getFakeSceneAndExtensionData({ name: 'Scene1' })
);
runtimeScene._timeManager.getElapsedTime = function () {
return timeDelta;
};
runtimeScene.networkId = 'fake-hardcoded-scene-network-id';
return runtimeScene;
};
/**
* A mocked P2P message data.
* @implements {gdjs.multiplayerPeerJsHelper.IMessageData}
*/
class MockedMessageData {
/**
* @param {object} data
* @param {string} sender
**/
constructor(data, sender) {
this.data = data;
this.sender = sender;
}
/**
* The data sent alongside the event.
*/
data = {};
/**
* The ID of the sender of the event.
*/
sender = '';
getData() {
return this.data;
}
getSender() {
return this.sender;
}
}
/**
* A mocked P2P messages list.
* @implements {gdjs.multiplayerPeerJsHelper.IMessagesList}
*/
class MockedMessagesList {
data = [];
messageName = 'some-message-name';
constructor(messageName) {
this.messageName = messageName;
}
getName() {
return this.messageName;
}
/**
* @param {object} newData
* @param {string} sender
*/
pushMessage(newData, sender) {
this.data.push(new MockedMessageData(newData, sender));
}
getMessages() {
return this.data;
}
}
/**
* Create a mocked P2P handler.
* It stores the messages sent to/from peers.
*/
const createMultiplayerManagersMock = () => {
/**
* @type {{ currentPeerId: string, otherPeerIds: string[], justDisconnectedPeers: string[] }}
*/
const p2pState = {
currentPeerId: '',
otherPeerIds: [],
justDisconnectedPeers: [],
};
/** @type {Record<string, Map<string, MockedMessagesList>>} */
const peerAllMessagesMap = {};
/** @type {Record<string, gdjs.MultiplayerMessageManager>} */
const peerMultiplayerMessageManager = {};
/** @type {Record<string, gdjs.MultiplayerVariablesManager>} */
const peerMultiplayerVariablesManager = {};
const getPeerMessages = (peerId) =>
(peerAllMessagesMap[peerId] = peerAllMessagesMap[peerId] || new Map());
/**
* @param {string} messageName
* @returns {gdjs.multiplayerPeerJsHelper.IMessagesList}
*/
const getOrCreateMessagesList = (messageName) => {
const allMessagesMap = getPeerMessages(p2pState.currentPeerId);
const messagesList = allMessagesMap.get(messageName);
if (messagesList) return messagesList;
const newMessagesList = new MockedMessagesList(messageName);
allMessagesMap.set(messageName, newMessagesList);
return newMessagesList;
};
/**
* @param {string[]} peerIds
* @param {string} messageName
* @param {object} messageData
*/
const sendDataTo = async (peerIds, messageName, messageData) => {
for (const peerId of peerIds) {
// console.log(`## SENDING DATA TO ${peerId}:`, messageName, messageData);
const peerAllMessagesMap = getPeerMessages(peerId);
let peerMessagesList = peerAllMessagesMap.get(messageName);
if (!peerMessagesList) {
peerMessagesList = new MockedMessagesList(messageName);
peerAllMessagesMap.set(messageName, peerMessagesList);
}
// We clone the message data to simulate the fact that it's sent over the network,
// so that the original message data is not modified by the receiver.
const clonedMessageData = JSON.parse(JSON.stringify(messageData));
peerMessagesList.pushMessage(clonedMessageData, p2pState.currentPeerId);
}
};
/** @type {typeof gdjs.multiplayerPeerJsHelper} */
const peerJsHelperMock = {
// @ts-ignore - this is a mock so private properties can't be the same.
MessagesList: MockedMessagesList,
MessageData: MockedMessageData,
getOrCreateMessagesList,
connect: (id) => {},
disconnectFromAllPeers: () => {},
sendDataTo,
getAllMessagesMap: () => getPeerMessages(p2pState.currentPeerId),
useCustomBrokerServer: () => {},
useDefaultBrokerServer: () => {},
useCustomICECandidate: () => {},
forceUseRelayServer: (shouldUseRelayServer) => {},
getCurrentId: () => p2pState.currentPeerId,
isReady: () => true,
getJustDisconnectedPeers: () => p2pState.justDisconnectedPeers,
getAllPeers: () => p2pState.otherPeerIds,
};
gdjs.multiplayerPeerJsHelper = peerJsHelperMock;
/**
* Helper to clear all messages stored in the peer messages lists.
*/
const markAllPeerMessagesAsProcessed = () => {
for (const allMessagesList of Object.values(peerAllMessagesMap)) {
for (const messagesList of allMessagesList.values()) {
messagesList.data = [];
}
}
};
const expectNoMessagesToBeProcessed = () => {
for (const allMessagesList of Object.values(peerAllMessagesMap)) {
for (const messagesList of allMessagesList.values()) {
expect(messagesList.getMessages().length).to.be(0);
}
}
};
/**
* @param {{ playerNumber: number, allConnectedPlayers: {playerNumber: number, peerId: string}[], justDisconnectedPeers?: string[]}} options
*/
const switchToPeer = ({
playerNumber,
allConnectedPlayers,
justDisconnectedPeers,
}) => {
const connectedPlayer = allConnectedPlayers.find(
(player) => player.playerNumber === playerNumber
);
if (!connectedPlayer)
throw new Error(`No player found for player ${playerNumber}`);
const peerId = connectedPlayer.peerId;
// console.log('## SWITCHING TO PEER', peerId);
// Switch the state of the peerJs mock.
p2pState.currentPeerId = peerId;
p2pState.justDisconnectedPeers = justDisconnectedPeers || [];
// Player 1 is connected to everyone else, and everyone else is connected to player 1.
if (playerNumber === 1) {
p2pState.otherPeerIds = allConnectedPlayers
.filter((player) => player.playerNumber !== 1)
.map((player) => player.peerId);
} else {
p2pState.otherPeerIds = allConnectedPlayers
.filter((player) => player.playerNumber === 1)
.map((player) => player.peerId);
}
// Switch the state of the MultiplayerMessageManager.
gdjs.multiplayerMessageManager = peerMultiplayerMessageManager[peerId] =
peerMultiplayerMessageManager[peerId] ||
gdjs.makeMultiplayerMessageManager();
// Switch the state of the MultiplayerVariablesManager.
gdjs.multiplayerVariablesManager = peerMultiplayerVariablesManager[
peerId
] =
peerMultiplayerVariablesManager[peerId] ||
gdjs.makeMultiplayerVariablesManager();
// Switch the state of the game.
gdjs.multiplayer.playerNumber = playerNumber;
};
/**
* Helper to fast forward a bit of time in players games, so that heartbeats
* are sent and all players are aware of each other.
* @param {{ playerNumber: number, peerId: string, isHost?: boolean }[]} players
*/
const initiateGameWithPlayers = (players) => {
// Find the host.
const host = players.find((player) => player.isHost);
if (!host)
throw new Error('No host defined in players, cannot initiate game.');
// Create the instances of the MultiplayerMessageManager and MultiplayerVariablesManager
// for each player.
for (const player of players) {
peerMultiplayerMessageManager[player.peerId] =
gdjs.makeMultiplayerMessageManager();
peerMultiplayerVariablesManager[player.peerId] =
gdjs.makeMultiplayerVariablesManager();
// Define the host for everyone.
gdjs.multiplayer.hostPeerId = host.peerId;
}
// Use a scene to simulate the game loop moving forward.
const runtimeScene = makeTestRuntimeSceneWithNetworkId();
runtimeScene.renderAndStep(1000 / 60);
// Speed up time on player 1 to send heartbeats.
switchToPeer({
playerNumber: 1,
allConnectedPlayers: players,
});
runtimeScene.renderAndStep(1000 / 60);
// Speed up time on other players to receive heartbeats and send them back.
for (const player of players) {
if (player.playerNumber === 1) continue;
switchToPeer({
playerNumber: player.playerNumber,
allConnectedPlayers: players,
});
runtimeScene.renderAndStep(1000 / 60);
}
// Speed up time on player 1 to receive heartbeats and send them back.
switchToPeer({
playerNumber: 1,
allConnectedPlayers: players,
});
runtimeScene.renderAndStep(1000 / 60);
// Speed up time on other players to receive updated heartbeats with players info.
for (const player of players) {
if (player.playerNumber === 1) continue;
switchToPeer({
playerNumber: player.playerNumber,
allConnectedPlayers: players,
});
runtimeScene.renderAndStep(1000 / 60);
}
markAllPeerMessagesAsProcessed();
};
const logMessages = () => {
Object.keys(peerAllMessagesMap).forEach((peerId) => {
console.log(`## PEER ${peerId} messages:`);
for (const [messageName, messagesList] of peerAllMessagesMap[peerId]) {
console.log(
`${messageName}: ${JSON.stringify(messagesList.getMessages())}`
);
}
});
};
return {
initiateGameWithPlayers,
switchToPeer,
logMessages,
markAllPeerMessagesAsProcessed,
expectNoMessagesToBeProcessed,
};
};
let _originalP2pIfAny = undefined;
beforeEach(() => {
_originalP2pIfAny = gdjs.multiplayerPeerJsHelper;
gdjs.multiplayer.disableMultiplayerForTesting = false;
gdjs.multiplayer._isLobbyGameRunning = true;
gdjs.multiplayer._isReadyToSendOrReceiveGameUpdateMessages = true;
// Sync as fast as possible for tests.
gdjs.multiplayer._objectMaxSyncRate = Infinity;
});
afterEach(() => {
gdjs.multiplayerPeerJsHelper = _originalP2pIfAny;
gdjs.multiplayer.disableMultiplayerForTesting = true;
gdjs.multiplayer._isLobbyGameRunning = false;
gdjs.multiplayer._isReadyToSendOrReceiveGameUpdateMessages = false;
gdjs.multiplayer._objectMaxSyncRate =
gdjs.multiplayer.DEFAULT_OBJECT_MAX_SYNC_RATE;
});
describe('Single scene tests', () => {
it('synchronizes scene/global variables from the host to other players', () => {
const {
switchToPeer,
markAllPeerMessagesAsProcessed,
initiateGameWithPlayers,
} = createMultiplayerManagersMock();
const allConnectedPlayers = [
{ playerNumber: 1, peerId: 'player-1', isHost: true },
{ playerNumber: 2, peerId: 'player-2' },
];
initiateGameWithPlayers(allConnectedPlayers);
switchToPeer({
playerNumber: 1,
allConnectedPlayers,
});
const p1RuntimeScene = makeTestRuntimeSceneWithNetworkId();
const p1StringVariable = new gdjs.Variable();
p1StringVariable.setString('Hello from remote world');
const p1NumberVariable = new gdjs.Variable();
p1NumberVariable.setNumber(42);
const p1BooleanVariable = new gdjs.Variable();
p1BooleanVariable.setBoolean(false);
p1RuntimeScene.getVariables().add('MyString_Variable', p1StringVariable);
p1RuntimeScene.getVariables().add('MyNumber_Variable', p1NumberVariable);
p1RuntimeScene
.getVariables()
.add('MyBoolean_Variable', p1BooleanVariable);
p1RuntimeScene.renderAndStep(1000 / 60);
switchToPeer({
playerNumber: 2,
allConnectedPlayers,
});
const p2RuntimeScene = makeTestRuntimeSceneWithNetworkId();
p2RuntimeScene.renderAndStep(1000 / 60);
markAllPeerMessagesAsProcessed();
expect(p2RuntimeScene.getVariables().has('MyString_Variable')).to.be(
true
);
expect(p2RuntimeScene.getVariables().has('MyNumber_Variable')).to.be(
true
);
expect(p2RuntimeScene.getVariables().has('MyBoolean_Variable')).to.be(
true
);
expect(
p2RuntimeScene.getVariables().get('MyString_Variable').getAsString()
).to.be('Hello from remote world');
expect(
p2RuntimeScene.getVariables().get('MyNumber_Variable').getAsNumber()
).to.be(42);
expect(
p2RuntimeScene.getVariables().get('MyBoolean_Variable').getAsBoolean()
).to.be(false);
// Also check global variables.
switchToPeer({
playerNumber: 1,
allConnectedPlayers,
});
const p1GlobalStringVariable = new gdjs.Variable();
p1GlobalStringVariable.setString('Hello from remote global world');
const p1GlobalNumberVariable = new gdjs.Variable();
p1GlobalNumberVariable.setNumber(142);
const p1GlobalBooleanVariable = new gdjs.Variable();
p1GlobalBooleanVariable.setBoolean(false);
const p1GlobalArrayVariable = new gdjs.Variable();
p1GlobalArrayVariable.pushValue('Hello from remote global array');
p1GlobalArrayVariable.pushValue(143);
p1GlobalArrayVariable.pushValue(true);
const p1GlobalStructureVariable = new gdjs.Variable();
const p1GlobalStructureVariableChildString = new gdjs.Variable();
p1GlobalStructureVariableChildString.setString(
'Hello from remote global structure'
);
const p1GlobalStructureVariableChildNumber = new gdjs.Variable();
p1GlobalStructureVariableChildNumber.setNumber(144);
const p1GlobalStructureVariableChildBoolean = new gdjs.Variable();
p1GlobalStructureVariableChildBoolean.setBoolean(true);
p1GlobalStructureVariable.addChild(
'first',
p1GlobalStructureVariableChildString
);
p1GlobalStructureVariable.addChild(
'second',
p1GlobalStructureVariableChildNumber
);
p1GlobalStructureVariable.addChild(
'third',
p1GlobalStructureVariableChildBoolean
);
p1RuntimeScene
.getGame()
.getVariables()
.add('MyGlobalStringVariable', p1GlobalStringVariable);
p1RuntimeScene
.getGame()
.getVariables()
.add('MyGlobalNumberVariable', p1GlobalNumberVariable);
p1RuntimeScene
.getGame()
.getVariables()
.add('MyGlobalBooleanVariable', p1GlobalBooleanVariable);
p1RuntimeScene
.getGame()
.getVariables()
.add('MyGlobalArrayVariable', p1GlobalArrayVariable);
p1RuntimeScene
.getGame()
.getVariables()
.add('MyGlobalStructureVariable', p1GlobalStructureVariable);
p1RuntimeScene.renderAndStep(1000 / 60);
switchToPeer({
playerNumber: 2,
allConnectedPlayers,
});
p2RuntimeScene.renderAndStep(1000 / 60);
markAllPeerMessagesAsProcessed();
expect(
p2RuntimeScene.getGame().getVariables().has('MyGlobalStringVariable')
).to.be(true);
expect(
p2RuntimeScene.getGame().getVariables().has('MyGlobalNumberVariable')
).to.be(true);
expect(
p2RuntimeScene.getGame().getVariables().has('MyGlobalBooleanVariable')
).to.be(true);
expect(
p2RuntimeScene.getGame().getVariables().has('MyGlobalArrayVariable')
).to.be(true);
expect(
p2RuntimeScene.getGame().getVariables().has('MyGlobalStructureVariable')
).to.be(true);
expect(
p2RuntimeScene
.getGame()
.getVariables()
.get('MyGlobalStringVariable')
.getAsString()
).to.be('Hello from remote global world');
expect(
p2RuntimeScene
.getGame()
.getVariables()
.get('MyGlobalNumberVariable')
.getAsNumber()
).to.be(142);
expect(
p2RuntimeScene
.getGame()
.getVariables()
.get('MyGlobalBooleanVariable')
.getAsBoolean()
).to.be(false);
const p2GlobalArrayVariable = p2RuntimeScene
.getGame()
.getVariables()
.get('MyGlobalArrayVariable')
.getAllChildrenArray();
expect(p2GlobalArrayVariable.length).to.be(3);
expect(p2GlobalArrayVariable[0].getAsString()).to.be(
'Hello from remote global array'
);
expect(p2GlobalArrayVariable[1].getAsNumber()).to.be(143);
expect(p2GlobalArrayVariable[2].getAsBoolean()).to.be(true);
const p2GlobalStructureVariable = p2RuntimeScene
.getGame()
.getVariables()
.get('MyGlobalStructureVariable');
expect(p2GlobalStructureVariable.hasChild('first')).to.be(true);
expect(p2GlobalStructureVariable.hasChild('second')).to.be(true);
expect(p2GlobalStructureVariable.hasChild('third')).to.be(true);
expect(p2GlobalStructureVariable.getChild('first').getAsString()).to.be(
'Hello from remote global structure'
);
expect(p2GlobalStructureVariable.getChild('second').getAsNumber()).to.be(
144
);
expect(p2GlobalStructureVariable.getChild('third').getAsBoolean()).to.be(
true
);
});
it('overrides a scene/global variable, modified by a player, when synchronized by the host', () => {
const {
switchToPeer,
markAllPeerMessagesAsProcessed,
expectNoMessagesToBeProcessed,
initiateGameWithPlayers,
} = createMultiplayerManagersMock();
const allConnectedPlayers = [
{ playerNumber: 1, peerId: 'player-1', isHost: true },
{ playerNumber: 2, peerId: 'player-2' },
];
initiateGameWithPlayers(allConnectedPlayers);
switchToPeer({
playerNumber: 1,
allConnectedPlayers,
});
const p1RuntimeScene = makeTestRuntimeSceneWithNetworkId();
const p1Variable = new gdjs.Variable();
p1Variable.setString('Hello from remote world');
p1RuntimeScene.getVariables().add('MyVariable', p1Variable);
p1RuntimeScene.renderAndStep(1000 / 60);
switchToPeer({
playerNumber: 2,
allConnectedPlayers,
});
// Verify player 2 can create variables, but the one from the host will override any value set for it
// by player 2.
const p2RuntimeScene = makeTestRuntimeSceneWithNetworkId();
{
const variable = new gdjs.Variable();
variable.setString('This will be overriden');
p2RuntimeScene.getVariables().add('MyVariable', variable);
}
{
const variable = new gdjs.Variable();
variable.setString('Something else');
p2RuntimeScene.getVariables().add('MyOtherVariable', variable);
}
p2RuntimeScene.renderAndStep(1000 / 60);
markAllPeerMessagesAsProcessed();
expect(
p2RuntimeScene.getVariables().get('MyVariable').getAsString()
).to.be('Hello from remote world');
expect(
p2RuntimeScene.getVariables().get('MyOtherVariable').getAsString()
).to.be('Something else');
expectNoMessagesToBeProcessed();
// Check the host sends again the variable, even if not changed, for reliability
// (allows to work around a dropped message, without using a real acknowledgement).
switchToPeer({
playerNumber: 1,
allConnectedPlayers,
});
p1RuntimeScene.renderAndStep(1000 / 60);
// Check the variable on player 2 is overriden again.
switchToPeer({
playerNumber: 2,
allConnectedPlayers,
});
p2RuntimeScene
.getVariables()
.get('MyVariable')
.setString('Changed value that will be overriden again');
p2RuntimeScene.renderAndStep(1000 / 60);
expect(
p2RuntimeScene.getVariables().get('MyVariable').getAsString()
).to.be('Hello from remote world');
expect(
p2RuntimeScene.getVariables().get('MyOtherVariable').getAsString()
).to.be('Something else');
markAllPeerMessagesAsProcessed();
expectNoMessagesToBeProcessed();
});
it('synchronizes a scene/global variable from a player to the host to other players', () => {
const {
switchToPeer,
markAllPeerMessagesAsProcessed,
expectNoMessagesToBeProcessed,
initiateGameWithPlayers,
} = createMultiplayerManagersMock();
const allConnectedPlayers = [
{ playerNumber: 1, peerId: 'player-1', isHost: true },
{ playerNumber: 2, peerId: 'player-2' },
{ playerNumber: 3, peerId: 'player-3' },
];
initiateGameWithPlayers(allConnectedPlayers);
switchToPeer({
playerNumber: 1,
allConnectedPlayers,
});
const p1RuntimeScene = makeTestRuntimeSceneWithNetworkId();
const p1SceneVariable = new gdjs.Variable();
p1SceneVariable.setString('This will be overriden');
p1RuntimeScene.getVariables().add('MyVariable', p1SceneVariable);
p1SceneVariable.setPlayerOwnership(3); // Ownership is given to player 3.
const p1GlobalVariable = new gdjs.Variable();
p1GlobalVariable.setString('This will be overriden');
p1RuntimeScene
.getGame()
.getVariables()
.add('MyGlobalVariable', p1GlobalVariable);
p1GlobalVariable.setPlayerOwnership(3); // Ownership is given to player 3.
p1RuntimeScene.renderAndStep(1000 / 60);
switchToPeer({
playerNumber: 2,
allConnectedPlayers,
});
// Create the variable on player 2 too.
const p2RuntimeScene = makeTestRuntimeSceneWithNetworkId();
const p2Scenevariable = new gdjs.Variable();
p2Scenevariable.setString('This will be overriden');
p2RuntimeScene.getVariables().add('MyVariable', p2Scenevariable);
p2Scenevariable.setPlayerOwnership(3); // Ownership is given to player 3.
const p2GlobalVariable = new gdjs.Variable();
p2GlobalVariable.setString('This will be overriden');
p2RuntimeScene
.getGame()
.getVariables()
.add('MyGlobalVariable', p2GlobalVariable);
p2GlobalVariable.setPlayerOwnership(3); // Ownership is given to player 3.
p2RuntimeScene.renderAndStep(1000 / 60);
switchToPeer({
playerNumber: 3,
allConnectedPlayers,
});
// Create the variable on player 3 too, which is the owner.
const p3RuntimeScene = makeTestRuntimeSceneWithNetworkId();
const p3SceneVariable = new gdjs.Variable();
p3SceneVariable.setString('This will be overriden');
p3RuntimeScene.getVariables().add('MyVariable', p3SceneVariable);
p3SceneVariable.setPlayerOwnership(3); // Ownership is given to player 3.
const p3GlobalVariable = new gdjs.Variable();
p3GlobalVariable.setString('This will be overriden');
p3RuntimeScene
.getGame()
.getVariables()
.add('MyGlobalVariable', p3GlobalVariable);
p3GlobalVariable.setPlayerOwnership(3); // Ownership is given to player 3.
p3RuntimeScene.renderAndStep(1000 / 60);
markAllPeerMessagesAsProcessed();
expectNoMessagesToBeProcessed();
// Change the variables on player 3.
{
switchToPeer({
playerNumber: 3,
allConnectedPlayers,
});
p3RuntimeScene
.getVariables()
.get('MyVariable')
.setString('Changed by player 3');
p3RuntimeScene
.getGame()
.getVariables()
.get('MyGlobalVariable')
.setString('Changed by player 3');
p3RuntimeScene.renderAndStep(1000 / 60);
}
// Check the variables are synchronized on the host.
{
switchToPeer({
playerNumber: 1,
allConnectedPlayers,
});
p1RuntimeScene.renderAndStep(1000 / 60);
expect(
p1RuntimeScene.getVariables().get('MyVariable').getAsString()
).to.be('Changed by player 3');
expect(
p1RuntimeScene
.getGame()
.getVariables()
.get('MyGlobalVariable')
.getAsString()
).to.be('Changed by player 3');
}
// Check the variable is synchronized on the other player.
{
switchToPeer({
playerNumber: 2,
allConnectedPlayers,
});
p2RuntimeScene.renderAndStep(1000 / 60);
expect(
p2RuntimeScene.getVariables().get('MyVariable').getAsString()
).to.be('Changed by player 3');
expect(
p2RuntimeScene
.getGame()
.getVariables()
.get('MyGlobalVariable')
.getAsString()
).to.be('Changed by player 3');
}
});
it('does not synchronize a scene/global variable from players if defined as not synchronized', () => {
const {
switchToPeer,
markAllPeerMessagesAsProcessed,
expectNoMessagesToBeProcessed,
initiateGameWithPlayers,
} = createMultiplayerManagersMock();
const allConnectedPlayers = [
{ playerNumber: 1, peerId: 'player-1', isHost: true },
{ playerNumber: 2, peerId: 'player-2' },
{ playerNumber: 3, peerId: 'player-3' },
];
initiateGameWithPlayers(allConnectedPlayers);
switchToPeer({
playerNumber: 1,
allConnectedPlayers,
});
const p1RuntimeScene = makeTestRuntimeSceneWithNetworkId();
const p1SceneVariable = new gdjs.Variable();
p1SceneVariable.setString('P1 is master of this variable');
p1RuntimeScene.getVariables().add('MyVariable', p1SceneVariable);
p1SceneVariable.disableSynchronization(); // Disable synchronization.
const p1GlobalVariable = new gdjs.Variable();
p1GlobalVariable.setString('P1 is master of this variable');
p1RuntimeScene
.getGame()
.getVariables()
.add('MyGlobalVariable', p1GlobalVariable);
p1GlobalVariable.disableSynchronization(); // Disable synchronization.
p1RuntimeScene.renderAndStep(1000 / 60);
switchToPeer({
playerNumber: 2,
allConnectedPlayers,
});
// Create the variable on player 2 too.
const p2RuntimeScene = makeTestRuntimeSceneWithNetworkId();
const p2Scenevariable = new gdjs.Variable();
p2Scenevariable.setString('P2 is master of this variable');
p2RuntimeScene.getVariables().add('MyVariable', p2Scenevariable);
p2Scenevariable.disableSynchronization(); // Disable synchronization.
const p2GlobalVariable = new gdjs.Variable();
p2GlobalVariable.setString('This will be overriden');
p2RuntimeScene
.getGame()
.getVariables()
.add('MyGlobalVariable', p2GlobalVariable);
p2GlobalVariable.disableSynchronization(); // Disable synchronization.
p2RuntimeScene.renderAndStep(1000 / 60);
switchToPeer({
playerNumber: 3,
allConnectedPlayers,
});
// Create the variable on player 3 too.
const p3RuntimeScene = makeTestRuntimeSceneWithNetworkId();
const p3SceneVariable = new gdjs.Variable();
p3SceneVariable.setString('P3 is master of this variable');
p3RuntimeScene.getVariables().add('MyVariable', p3SceneVariable);
p3SceneVariable.disableSynchronization(); // Disable synchronization.
const p3GlobalVariable = new gdjs.Variable();
p3GlobalVariable.setString('P3 is master of this variable');
p3RuntimeScene
.getGame()
.getVariables()
.add('MyGlobalVariable', p3GlobalVariable);
p3GlobalVariable.disableSynchronization(); // Disable synchronization.
p3RuntimeScene.renderAndStep(1000 / 60);
markAllPeerMessagesAsProcessed();
expectNoMessagesToBeProcessed();
// Change the variables on player 3.
{
switchToPeer({
playerNumber: 3,
allConnectedPlayers,
});
p3RuntimeScene
.getVariables()
.get('MyVariable')
.setString('Changed by player 3');
p3RuntimeScene
.getGame()
.getVariables()
.get('MyGlobalVariable')
.setString('Changed by player 3');
p3RuntimeScene.renderAndStep(1000 / 60);
}
// Change the variables on player 2.
{
switchToPeer({
playerNumber: 2,
allConnectedPlayers,
});
p2RuntimeScene
.getVariables()
.get('MyVariable')
.setString('Changed by player 2');
p2RuntimeScene
.getGame()
.getVariables()
.get('MyGlobalVariable')
.setString('Changed by player 2');
p2RuntimeScene.renderAndStep(1000 / 60);
}
// Change the variables on player 1.
{
switchToPeer({
playerNumber: 1,
allConnectedPlayers,
});
p1RuntimeScene
.getVariables()
.get('MyVariable')
.setString('Changed by player 1');
p1RuntimeScene
.getGame()
.getVariables()
.get('MyGlobalVariable')
.setString('Changed by player 1');
p1RuntimeScene.renderAndStep(1000 / 60);
}
// Check the variables have not been overriden on player 2.
{
switchToPeer({
playerNumber: 2,
allConnectedPlayers,
});
p2RuntimeScene.renderAndStep(1000 / 60);
expect(
p2RuntimeScene.getVariables().get('MyVariable').getAsString()
).to.be('Changed by player 2');
expect(
p2RuntimeScene
.getGame()
.getVariables()
.get('MyGlobalVariable')
.getAsString()
).to.be('Changed by player 2');
}
// Check the variables have not been overriden on player 3.
{
switchToPeer({
playerNumber: 3,
allConnectedPlayers,
});
p3RuntimeScene.renderAndStep(1000 / 60);
expect(
p3RuntimeScene.getVariables().get('MyVariable').getAsString()
).to.be('Changed by player 3');
expect(
p3RuntimeScene
.getGame()
.getVariables()
.get('MyGlobalVariable')
.getAsString()
).to.be('Changed by player 3');
}
// Check the variables have not been overriden on the host.
{
switchToPeer({
playerNumber: 1,
allConnectedPlayers,
});
p1RuntimeScene.renderAndStep(1000 / 60);
expect(
p1RuntimeScene.getVariables().get('MyVariable').getAsString()
).to.be('Changed by player 1');
expect(
p1RuntimeScene
.getGame()
.getVariables()
.get('MyGlobalVariable')
.getAsString()
).to.be('Changed by player 1');
}
});
it('synchronizes objects from the host to other players', () => {
const {
switchToPeer,
markAllPeerMessagesAsProcessed,
initiateGameWithPlayers,
} = createMultiplayerManagersMock();
const allConnectedPlayers = [
{ playerNumber: 1, peerId: 'player-1', isHost: true },
{ playerNumber: 2, peerId: 'player-2' },
];
initiateGameWithPlayers(allConnectedPlayers);
// Create an instance on the host's game:
switchToPeer({
playerNumber: 1,
allConnectedPlayers,
});
const p1RuntimeScene = makeTestRuntimeSceneWithNetworkId();
p1RuntimeScene.createObject('MySpriteObject');
const { object: p1SpriteObjectOriginal } =
getObjectAndMultiplayerBehaviorsFromScene(
p1RuntimeScene,
'MySpriteObject'
)[0];
p1SpriteObjectOriginal.setX(142);
p1SpriteObjectOriginal.setY(143);
p1RuntimeScene.renderAndStep(1000 / 60);
// Check the object is created on the other peer.
switchToPeer({
playerNumber: 2,
allConnectedPlayers,
});
const p2RuntimeScene = makeTestRuntimeSceneWithNetworkId();
const p2Objects = p2RuntimeScene.getObjects('MySpriteObject');
if (!p2Objects) throw new Error('No objects found');
expect(p2Objects.length).to.be(0);
p2RuntimeScene.renderAndStep(1000 / 60);
markAllPeerMessagesAsProcessed();
const { object: p2SpriteObject } =
getObjectAndMultiplayerBehaviorsFromScene(
p2RuntimeScene,
'MySpriteObject'
)[0];
expect(p2SpriteObject.getX()).to.be(142);
expect(p2SpriteObject.getY()).to.be(143);
// Move the object on the host's game:
{
switchToPeer({
playerNumber: 1,
allConnectedPlayers,
});
const { object: p1SpriteObject } =
getObjectAndMultiplayerBehaviorsFromScene(
p1RuntimeScene,
'MySpriteObject'
)[0];
p1SpriteObject.setX(242);
p1SpriteObject.setY(243);
p1RuntimeScene.renderAndStep(1000 / 60);
}
// Check the object is moved on the other peer.
{
switchToPeer({
playerNumber: 2,
allConnectedPlayers,
});
p2RuntimeScene.renderAndStep(1000 / 60);
markAllPeerMessagesAsProcessed();
const { object: p2SpriteObject } =
getObjectAndMultiplayerBehaviorsFromScene(
p2RuntimeScene,
'MySpriteObject'
)[0];
expect(p2SpriteObject.getX()).to.be(242);
expect(p2SpriteObject.getY()).to.be(243);
}
// Destroy the object on the host's game:
{
switchToPeer({
playerNumber: 1,
allConnectedPlayers,
});
const { object: p1SpriteObject1 } =
getObjectAndMultiplayerBehaviorsFromScene(
p1RuntimeScene,
'MySpriteObject'
)[0];
p1SpriteObject1.deleteFromScene();
p1RuntimeScene.renderAndStep(1000 / 60);
}
// Check the object is deleted on the other peer.
{
switchToPeer({
playerNumber: 2,
allConnectedPlayers,
});
p2RuntimeScene.renderAndStep(1000 / 60);
markAllPeerMessagesAsProcessed();
const p2Objects = p2RuntimeScene.getObjects('MySpriteObject');
if (!p2Objects) throw new Error('No objects found');
expect(p2Objects.length).to.be(0);
}
});
it('synchronizes objects from a player to the host to other players', () => {
const {
switchToPeer,
markAllPeerMessagesAsProcessed,
initiateGameWithPlayers,
} = createMultiplayerManagersMock();
const allConnectedPlayers = [
{ playerNumber: 1, peerId: 'player-1', isHost: true },
{ playerNumber: 2, peerId: 'player-2' },
{ playerNumber: 3, peerId: 'player-3' },
];
initiateGameWithPlayers(allConnectedPlayers);
// Create an instance on a player:
switchToPeer({
playerNumber: 2,
allConnectedPlayers,
});
const p2RuntimeScene = makeTestRuntimeSceneWithNetworkId();
p2RuntimeScene.createObject('MySpriteObject');
const {
object: mySpriteObjectOriginal,
behavior: mySpriteObjectBehavior,
} = getObjectAndMultiplayerBehaviorsFromScene(
p2RuntimeScene,
'MySpriteObject'
)[0];
mySpriteObjectOriginal.setX(142);
mySpriteObjectOriginal.setY(143);
mySpriteObjectBehavior.setPlayerObjectOwnership(2);
p2RuntimeScene.renderAndStep(1000 / 60);
// Check the object is created on the host's game.
switchToPeer({
playerNumber: 1,
allConnectedPlayers,
});
const p1RuntimeScene = makeTestRuntimeSceneWithNetworkId();
const p1Objects = p1RuntimeScene.getObjects('MySpriteObject');
if (!p1Objects) throw new Error('No objects found');
expect(p1Objects.length).to.be(0);
p1RuntimeScene.renderAndStep(1000 / 60);
const { object: p1SpriteObject } =
getObjectAndMultiplayerBehaviorsFromScene(
p1RuntimeScene,
'MySpriteObject'
)[0];
expect(p1SpriteObject.getX()).to.be(142);
expect(p1SpriteObject.getY()).to.be(143);
// Check the object is created on the other player.
switchToPeer({
playerNumber: 3,
allConnectedPlayers,
});
const p3RuntimeScene = makeTestRuntimeSceneWithNetworkId();
const p3Objects = p3RuntimeScene.getObjects('MySpriteObject');
if (!p3Objects) throw new Error('No objects found');
expect(p3Objects.length).to.be(0);
p3RuntimeScene.renderAndStep(1000 / 60);
const { object: p3SpriteObject } =
getObjectAndMultiplayerBehaviorsFromScene(
p3RuntimeScene,
'MySpriteObject'
)[0];
expect(p3SpriteObject.getX()).to.be(142);
expect(p3SpriteObject.getY()).to.be(143);
markAllPeerMessagesAsProcessed();
// Move the object on the player:
{
switchToPeer({
playerNumber: 2,
allConnectedPlayers,
});
const { object: p2SpriteObject } =
getObjectAndMultiplayerBehaviorsFromScene(
p2RuntimeScene,
'MySpriteObject'
)[0];
p2SpriteObject.setX(242);
p2SpriteObject.setY(243);
p2RuntimeScene.renderAndStep(1000 / 60);
}
// Check the object is moved on the host's game.
{
switchToPeer({
playerNumber: 1,
allConnectedPlayers,
});
p1RuntimeScene.renderAndStep(1000 / 60);
const { object: p1SpriteObject } =
getObjectAndMultiplayerBehaviorsFromScene(
p1RuntimeScene,
'MySpriteObject'
)[0];
expect(p1SpriteObject.getX()).to.be(242);
expect(p1SpriteObject.getY()).to.be(243);
}
// Check the object is moved on the other player.
{
switchToPeer({
playerNumber: 3,
allConnectedPlayers,
});
p3RuntimeScene.renderAndStep(1000 / 60);
markAllPeerMessagesAsProcessed();
const { object: p3SpriteObject } =
getObjectAndMultiplayerBehaviorsFromScene(
p3RuntimeScene,
'MySpriteObject'
)[0];
expect(p3SpriteObject.getX()).to.be(242);
expect(p3SpriteObject.getY()).to.be(243);
}
// Destroy the object (on player 2):
{
switchToPeer({
playerNumber: 2,
allConnectedPlayers,
});
const { object: p2SpriteObject1 } =
getObjectAndMultiplayerBehaviorsFromScene(
p2RuntimeScene,
'MySpriteObject'
)[0];
p2SpriteObject1.deleteFromScene();
p2RuntimeScene.renderAndStep(1000 / 60);
}
// Check the object is deleted on the host's game.
{
switchToPeer({
playerNumber: 1,
allConnectedPlayers,
});
const p1ObjectsAndBehaviors = getObjectAndMultiplayerBehaviorsFromScene(
p1RuntimeScene,
'MySpriteObject'
);
expect(p1ObjectsAndBehaviors.length).to.be(1);
p1RuntimeScene.renderAndStep(1000 / 60);
const p1ObjectsAndBehaviorsUpdated =
getObjectAndMultiplayerBehaviorsFromScene(
p1RuntimeScene,
'MySpriteObject'
);
expect(p1ObjectsAndBehaviorsUpdated.length).to.be(0);
}
// Check the object is deleted on the other player.
{
switchToPeer({
playerNumber: 3,
allConnectedPlayers,
});
const p3ObjectsAndBehaviors = getObjectAndMultiplayerBehaviorsFromScene(
p3RuntimeScene,
'MySpriteObject'
);
expect(p3ObjectsAndBehaviors.length).to.be(1);
p3RuntimeScene.renderAndStep(1000 / 60);
const p3ObjectsAndBehaviorsUpdated =
getObjectAndMultiplayerBehaviorsFromScene(
p3RuntimeScene,
'MySpriteObject'
);
expect(p3ObjectsAndBehaviorsUpdated.length).to.be(0);
}
markAllPeerMessagesAsProcessed();
});
it('allows ownership to change from host to a player to another player', () => {
const {
switchToPeer,
markAllPeerMessagesAsProcessed,
expectNoMessagesToBeProcessed,
initiateGameWithPlayers,
} = createMultiplayerManagersMock();
const allConnectedPlayers = [
{ playerNumber: 1, peerId: 'player-1', isHost: true },
{ playerNumber: 2, peerId: 'player-2' },
{ playerNumber: 3, peerId: 'player-3' },
];
initiateGameWithPlayers(allConnectedPlayers);
// Create an instance on the host's game:
switchToPeer({
playerNumber: 1,
allConnectedPlayers,
});
const p1RuntimeScene = makeTestRuntimeSceneWithNetworkId();
p1RuntimeScene.createObject('MySpriteObject');
const { object: p1SpriteObjectOriginal } =
getObjectAndMultiplayerBehaviorsFromScene(
p1RuntimeScene,
'MySpriteObject'
)[0];
p1SpriteObjectOriginal.setX(142);
p1SpriteObjectOriginal.setY(143);
p1RuntimeScene.renderAndStep(1000 / 60);
// Check the object is created on the players.
switchToPeer({
playerNumber: 2,
allConnectedPlayers,
});
const p2RuntimeScene = makeTestRuntimeSceneWithNetworkId();
p2RuntimeScene.renderAndStep(1000 / 60);
const { object: p2SpriteObjectOriginal } =
getObjectAndMultiplayerBehaviorsFromScene(
p2RuntimeScene,
'MySpriteObject'
)[0];
expect(p2SpriteObjectOriginal.getX()).to.be(142);
expect(p2SpriteObjectOriginal.getY()).to.be(143);
switchToPeer({
playerNumber: 3,
allConnectedPlayers,
});
const p3RuntimeScene = makeTestRuntimeSceneWithNetworkId();
p3RuntimeScene.renderAndStep(1000 / 60);
const { object: p3SpriteObjectOriginal } =
getObjectAndMultiplayerBehaviorsFromScene(
p3RuntimeScene,
'MySpriteObject'
)[0];
expect(p3SpriteObjectOriginal.getX()).to.be(142);
expect(p3SpriteObjectOriginal.getY()).to.be(143);
markAllPeerMessagesAsProcessed();
expectNoMessagesToBeProcessed();
// Check player 3 can get ownership (and can directly move the instance, without waiting for the
// host to acknowledge the change).
{
switchToPeer({
playerNumber: 3,
allConnectedPlayers,
});
const {
object: p3SpriteObject,
behavior: p3MultiplayerObjectBehavior,
} = getObjectAndMultiplayerBehaviorsFromScene(
p3RuntimeScene,
'MySpriteObject'
)[0];
p3SpriteObject.setX(342);
p3SpriteObject.setY(343);
p3MultiplayerObjectBehavior.setPlayerObjectOwnership(3);
p3RuntimeScene.renderAndStep(1000 / 60);
}
// Check the host is notified of the new ownership (and the new position).
{
switchToPeer({
playerNumber: 1,
allConnectedPlayers,
});
p1RuntimeScene.renderAndStep(1000 / 60);
const {
object: p1SpriteObject,
behavior: p1MultiplayerObjectBehavior,
} = getObjectAndMultiplayerBehaviorsFromScene(
p1RuntimeScene,
'MySpriteObject'
)[0];
expect(p1MultiplayerObjectBehavior.getPlayerObjectOwnership()).to.be(3);
expect(p1SpriteObject.getX()).to.be(342);
expect(p1SpriteObject.getY()).to.be(343);
}
// Check the player 2 is notified of the new ownership (and the new position).
{
switchToPeer({
playerNumber: 2,
allConnectedPlayers,
});
p2RuntimeScene.renderAndStep(1000 / 60);
const {
object: p2SpriteObject,
behavior: p2MultiplayerObjectBehavior,
} = getObjectAndMultiplayerBehaviorsFromScene(
p2RuntimeScene,
'MySpriteObject'
)[0];
expect(p2MultiplayerObjectBehavior.getPlayerObjectOwnership()).to.be(3);
expect(p2SpriteObject.getX()).to.be(342);
expect(p2SpriteObject.getY()).to.be(343);
markAllPeerMessagesAsProcessed();
markAllPeerMessagesAsProcessed();
expectNoMessagesToBeProcessed();
}
// Check player 2 can get ownership.
// It will also communicate the new position/changes to the instance.
{
switchToPeer({
playerNumber: 2,
allConnectedPlayers,
});
const {
object: p2SpriteObject,
behavior: p2MultiplayerObjectBehavior,
} = getObjectAndMultiplayerBehaviorsFromScene(
p2RuntimeScene,
'MySpriteObject'
)[0];
p2MultiplayerObjectBehavior.setPlayerObjectOwnership(2);
p2SpriteObject.setX(242);
p2SpriteObject.setY(243);
p2RuntimeScene.renderAndStep(1000 / 60);
}
// Check the host is notified of the new ownership.
{
switchToPeer({
playerNumber: 1,
allConnectedPlayers,
});
const { behavior: p1MultiplayerObjectBehavior } =
getObjectAndMultiplayerBehaviorsFromScene(
p1RuntimeScene,
'MySpriteObject'
)[0];
expect(p1MultiplayerObjectBehavior.getPlayerObjectOwnership()).to.be(3);
p1RuntimeScene.renderAndStep(1000 / 60);
const { behavior: p1MultiplayerObjectBehaviorUpdated } =
getObjectAndMultiplayerBehaviorsFromScene(
p1RuntimeScene,
'MySpriteObject'
)[0];
expect(
p1MultiplayerObjectBehaviorUpdated.getPlayerObjectOwnership()
).to.be(2);
}
// Check the player 3 is notified of the new ownership.
{
switchToPeer({
playerNumber: 3,
allConnectedPlayers,
});
const { behavior: p3MultiplayerObjectBehavior } =
getObjectAndMultiplayerBehaviorsFromScene(
p3RuntimeScene,
'MySpriteObject'
)[0];
expect(p3MultiplayerObjectBehavior.getPlayerObjectOwnership()).to.be(3);
p3RuntimeScene.renderAndStep(1000 / 60);
const { behavior: p3MultiplayerObjectBehaviorUpdated } =
getObjectAndMultiplayerBehaviorsFromScene(
p3RuntimeScene,
'MySpriteObject'
)[0];
expect(
p3MultiplayerObjectBehaviorUpdated.getPlayerObjectOwnership()
).to.be(2);
}
markAllPeerMessagesAsProcessed();
// Check that the position given by player 2 is updated on the host and player 3.
{
switchToPeer({
playerNumber: 1,
allConnectedPlayers,
});
const { behavior: p1MultiplayerObjectBehavior } =
getObjectAndMultiplayerBehaviorsFromScene(
p1RuntimeScene,
'MySpriteObject'
)[0];
expect(p1MultiplayerObjectBehavior.getPlayerObjectOwnership()).to.be(2);
p1RuntimeScene.renderAndStep(1000 / 60);
const { object: p1SpriteObject } =
getObjectAndMultiplayerBehaviorsFromScene(
p1RuntimeScene,
'MySpriteObject'
)[0];
expect(p1SpriteObject.getX()).to.be(242);
expect(p1SpriteObject.getY()).to.be(243);
switchToPeer({
playerNumber: 3,
allConnectedPlayers,
});
const { behavior: p3MultiplayerObjectBehavior } =
getObjectAndMultiplayerBehaviorsFromScene(
p3RuntimeScene,
'MySpriteObject'
)[0];
expect(p3MultiplayerObjectBehavior.getPlayerObjectOwnership()).to.be(2);
p3RuntimeScene.renderAndStep(1000 / 60);
const { object: p3SpriteObject } =
getObjectAndMultiplayerBehaviorsFromScene(
p3RuntimeScene,
'MySpriteObject'
)[0];
expect(p3SpriteObject.getX()).to.be(242);
expect(p3SpriteObject.getY()).to.be(243);
}
markAllPeerMessagesAsProcessed();
expectNoMessagesToBeProcessed();
});
it('reconciles an instance owned by a player with a "ghost" instance created on other peers without a network ID (as not owned by them)', () => {
const {
switchToPeer,
markAllPeerMessagesAsProcessed,
initiateGameWithPlayers,
} = createMultiplayerManagersMock();
const allConnectedPlayers = [
{ playerNumber: 1, peerId: 'player-1', isHost: true },
{ playerNumber: 2, peerId: 'player-2' },
{ playerNumber: 3, peerId: 'player-3' },
];
initiateGameWithPlayers(allConnectedPlayers);
// Create an instance on a player:
switchToPeer({
playerNumber: 2,
allConnectedPlayers,
});
const p2RuntimeScene = makeTestRuntimeSceneWithNetworkId();
p2RuntimeScene.createObject('MySpriteObject');
const { object: p2SpriteObject, behavior: p2SpriteObjectBehavior } =
getObjectAndMultiplayerBehaviorsFromScene(
p2RuntimeScene,
'MySpriteObject'
)[0];
p2SpriteObject.setX(142);
p2SpriteObject.setY(143);
p2SpriteObjectBehavior.setPlayerObjectOwnership(2);
p2RuntimeScene.renderAndStep(1000 / 60);
// Check the object is created on the host's game.
switchToPeer({
playerNumber: 1,
allConnectedPlayers,
});
const p1RuntimeScene = makeTestRuntimeSceneWithNetworkId();
const p1Objects = p1RuntimeScene.getObjects('MySpriteObject');
if (!p1Objects) throw new Error('No objects found');
expect(p1Objects.length).to.be(0);
p1RuntimeScene.renderAndStep(1000 / 60);
const { object: p1SpriteObject } =
getObjectAndMultiplayerBehaviorsFromScene(
p1RuntimeScene,
'MySpriteObject'
)[0];
expect(p1SpriteObject.getX()).to.be(142);
expect(p1SpriteObject.getY()).to.be(143);
// Check the object is created on the other player.
switchToPeer({
playerNumber: 3,
allConnectedPlayers,
});
const p3RuntimeScene = makeTestRuntimeSceneWithNetworkId();
const p3Objects = p3RuntimeScene.getObjects('MySpriteObject');
if (!p3Objects) throw new Error('No objects found');
expect(p3Objects.length).to.be(0);
p3RuntimeScene.renderAndStep(1000 / 60);
const { object: p3SpriteObject } =
getObjectAndMultiplayerBehaviorsFromScene(
p3RuntimeScene,
'MySpriteObject'
)[0];
expect(p3SpriteObject.getX()).to.be(142);
expect(p3SpriteObject.getY()).to.be(143);
markAllPeerMessagesAsProcessed();
// Now, create a new instance on the host and player 3, but owned by player 2.
// We call this in this test a "ghost" instance as it would be deleted if not "reconcilied".
// We can assume it's because there is some common logic running for all players
// resulting in the creation of this instance everywhere.
{
switchToPeer({
playerNumber: 1,
allConnectedPlayers,
});
p1RuntimeScene.createObject('MySpriteObject');
const { behavior: p1MultiplayerBehavior } =
getObjectAndMultiplayerBehaviorsFromScene(
p1RuntimeScene,
'MySpriteObject'
)[1]; // The new instance
p1MultiplayerBehavior.setPlayerObjectOwnership(2);
p1RuntimeScene.renderAndStep(1000 / 60);
const p1ObjectsAndBehaviors = getObjectAndMultiplayerBehaviorsFromScene(
p1RuntimeScene,
'MySpriteObject'
);
expect(p1ObjectsAndBehaviors.length).to.be(2);
const { object: p1Object1 } = p1ObjectsAndBehaviors[0];
const { object: p1Object2 } = p1ObjectsAndBehaviors[1];
expect(p1Object1.getX()).to.be(142);
expect(p1Object1.getY()).to.be(143);
expect(p1Object2.getX()).to.be(0);
expect(p1Object2.getY()).to.be(0);
switchToPeer({
playerNumber: 3,
allConnectedPlayers,
});
p3RuntimeScene.createObject('MySpriteObject');
const { behavior: p3MultiplayerBehavior } =
getObjectAndMultiplayerBehaviorsFromScene(
p3RuntimeScene,
'MySpriteObject'
)[1]; // The new instance
p3MultiplayerBehavior.setPlayerObjectOwnership(2);
p3RuntimeScene.renderAndStep(1000 / 60);
const p3ObjectsAndBehaviors = getObjectAndMultiplayerBehaviorsFromScene(
p3RuntimeScene,
'MySpriteObject'
);
expect(p3ObjectsAndBehaviors.length).to.be(2);
const { object: p3Object1 } = p3ObjectsAndBehaviors[0];
const { object: p3Object2 } = p3ObjectsAndBehaviors[1];
expect(p3Object1.getX()).to.be(142);
expect(p3Object1.getY()).to.be(143);
expect(p3Object2.getX()).to.be(0);
expect(p3Object2.getY()).to.be(0);
}
// Create an instance on player 2, owned by player 2.
{
switchToPeer({
playerNumber: 2,
allConnectedPlayers,
});
p2RuntimeScene.createObject('MySpriteObject');
const p2ObjectsAndBehaviors = getObjectAndMultiplayerBehaviorsFromScene(
p2RuntimeScene,
'MySpriteObject'
);
expect(p2ObjectsAndBehaviors.length).to.be(2);
const { object: p2Object1 } = p2ObjectsAndBehaviors[0];
const { object: p2Object2, behavior: p2MultiplayerBehavior2 } =
p2ObjectsAndBehaviors[1];
expect(p2Object1.getX()).to.be(142);
expect(p2Object1.getY()).to.be(143);
expect(p2Object2.getX()).to.be(0);
expect(p2Object2.getY()).to.be(0);
p2Object2.setX(42);
p2Object2.setY(43);
p2MultiplayerBehavior2.setPlayerObjectOwnership(2);
p2RuntimeScene.renderAndStep(1000 / 60);
}
// Verify the host and player 3 are notified of the new instance, and that they reuse
// their "ghost" instance for it.
{
switchToPeer({
playerNumber: 1,
allConnectedPlayers,
});
p1RuntimeScene.renderAndStep(1000 / 60);
const p1ObjectsAndBehaviors = getObjectAndMultiplayerBehaviorsFromScene(
p1RuntimeScene,
'MySpriteObject'
);
expect(p1ObjectsAndBehaviors.length).to.be(2); // Initial instance + new instance overriding the ghost
const { object: p1Object1 } = p1ObjectsAndBehaviors[0];
const { object: p1Object2 } = p1ObjectsAndBehaviors[1];
expect(p1Object1.getX()).to.be(142);
expect(p1Object1.getY()).to.be(143);
expect(p1Object2.getX()).to.be(42);
expect(p1Object2.getY()).to.be(43);
switchToPeer({
playerNumber: 3,
allConnectedPlayers,
});
p3RuntimeScene.renderAndStep(1000 / 60);
const p3ObjectsAndBehaviors = getObjectAndMultiplayerBehaviorsFromScene(
p3RuntimeScene,
'MySpriteObject'
);
expect(p3ObjectsAndBehaviors.length).to.be(2); // Initial instance + new instance overriding the ghost
const { object: p3Object1 } = p3ObjectsAndBehaviors[0];
const { object: p3Object2 } = p3ObjectsAndBehaviors[1];
expect(p3Object1.getX()).to.be(142);
expect(p3Object1.getY()).to.be(143);
expect(p3Object2.getX()).to.be(42);
expect(p3Object2.getY()).to.be(43);
markAllPeerMessagesAsProcessed();
}
});
it('deletes an instance owned by another player after a bit (if not "reconciled" in the meantime)', async () => {
const { switchToPeer, initiateGameWithPlayers } =
createMultiplayerManagersMock();
const allConnectedPlayers = [
{ playerNumber: 1, peerId: 'player-1', isHost: true },
{ playerNumber: 2, peerId: 'player-2' },
{ playerNumber: 3, peerId: 'player-3' },
];
initiateGameWithPlayers(allConnectedPlayers);
// Create an instance on a player (2), owned by another player (3).
// We can assume it's because there is some common logic running for all players
// resulting in the creation of this instance everywhere.
switchToPeer({
playerNumber: 2,
allConnectedPlayers,
});
const p2RuntimeScene = makeTestRuntimeSceneWithNetworkId();
p2RuntimeScene.createObject('MySpriteObject');
const {
object: mySpriteObject1,
behavior: p2SpriteMultiplayerObjectBehavior,
} = getObjectAndMultiplayerBehaviorsFromScene(
p2RuntimeScene,
'MySpriteObject'
)[0];
mySpriteObject1.setX(142);
mySpriteObject1.setY(143);
p2SpriteMultiplayerObjectBehavior.setPlayerObjectOwnership(3);
p2RuntimeScene.renderAndStep(1000 / 60);
const p2Objects = p2RuntimeScene.getObjects('MySpriteObject');
if (!p2Objects) throw new Error('No object found');
expect(p2Objects.length).to.be(1);
await delay(20);
p2RuntimeScene.renderAndStep(1000 / 60);
const p2ObjectsUpdated = p2RuntimeScene.getObjects('MySpriteObject');
if (!p2ObjectsUpdated) throw new Error('No object found');
expect(p2ObjectsUpdated.length).to.be(1);
// After some time, the instance should be deleted as it is owned by another player
// and was never synchronized since then. Player 3 probably created an instance for a logic
// that was run too early, or never ran on the other players.
await delay(500);
p2RuntimeScene.renderAndStep(1000 / 60);
const p2ObjectsUpdated2 = p2RuntimeScene.getObjects('MySpriteObject');
if (!p2ObjectsUpdated2) throw new Error('No object found');
expect(p2ObjectsUpdated2.length).to.be(0);
});
it('deletes an instance owned by another player instantly if not belonging to an existing player', async () => {
const { switchToPeer, initiateGameWithPlayers } =
createMultiplayerManagersMock();
const allConnectedPlayers = [
{ playerNumber: 1, peerId: 'player-1', isHost: true },
{ playerNumber: 2, peerId: 'player-2' },
];
initiateGameWithPlayers(allConnectedPlayers);
// Create an instance on a player (2), owned by another player (3).
// We can assume it's because there is some common logic running for all players
// resulting in the creation of this instance everywhere.
switchToPeer({
playerNumber: 2,
allConnectedPlayers,
});
const p2RuntimeScene = makeTestRuntimeSceneWithNetworkId();
p2RuntimeScene.createObject('MySpriteObject');
const {
object: mySpriteObject1,
behavior: p2SpriteMultiplayerObjectBehavior,
} = getObjectAndMultiplayerBehaviorsFromScene(
p2RuntimeScene,
'MySpriteObject'
)[0];
mySpriteObject1.setX(142);
mySpriteObject1.setY(143);
p2SpriteMultiplayerObjectBehavior.setPlayerObjectOwnership(3);
p2RuntimeScene.renderAndStep(1000 / 60);
const p2Objects = p2RuntimeScene.getObjects('MySpriteObject');
if (!p2Objects) throw new Error('No object found');
expect(p2Objects.length).to.be(0);
});
it('gives priority to the first ownership change and revert the wrong one', async () => {
const {
switchToPeer,
markAllPeerMessagesAsProcessed,
initiateGameWithPlayers,
} = createMultiplayerManagersMock();
const allConnectedPlayers = [
{ playerNumber: 1, peerId: 'player-1', isHost: true },
{ playerNumber: 2, peerId: 'player-2' },
{ playerNumber: 3, peerId: 'player-3' },
];
initiateGameWithPlayers(allConnectedPlayers);
// Create an instance on the host's game:
switchToPeer({
playerNumber: 1,
allConnectedPlayers,
});
const p1RuntimeScene = makeTestRuntimeSceneWithNetworkId();
p1RuntimeScene.createObject('MySpriteObject');
const {
object: mySpriteObject1,
behavior: p1SpriteMultiplayerObjectBehavior,
} = getObjectAndMultiplayerBehaviorsFromScene(
p1RuntimeScene,
'MySpriteObject'
)[0];
mySpriteObject1.setX(142);
mySpriteObject1.setY(143);
// No ownership given, it's owned by the host.
expect(
p1SpriteMultiplayerObjectBehavior.getPlayerObjectOwnership()
).to.be(0);
p1RuntimeScene.renderAndStep(1000 / 60);
// Check the object is created on the other players.
switchToPeer({
playerNumber: 2,
allConnectedPlayers,
});
const p2RuntimeScene = makeTestRuntimeSceneWithNetworkId();
const p2Objects = p2RuntimeScene.getObjects('MySpriteObject');
if (!p2Objects) throw new Error('No object found');
expect(p2Objects.length).to.be(0);
p2RuntimeScene.renderAndStep(1000 / 60);
const { object: p2SpriteObject } =
getObjectAndMultiplayerBehaviorsFromScene(
p2RuntimeScene,
'MySpriteObject'
)[0];
expect(p2SpriteObject.getX()).to.be(142);
expect(p2SpriteObject.getY()).to.be(143);
switchToPeer({
playerNumber: 3,
allConnectedPlayers,
});
const p3RuntimeScene = makeTestRuntimeSceneWithNetworkId();
const p3Objects = p3RuntimeScene.getObjects('MySpriteObject');
if (!p3Objects) throw new Error('No object found');
expect(p3Objects.length).to.be(0);
p3RuntimeScene.renderAndStep(1000 / 60);
const { object: p3SpriteObject } =
getObjectAndMultiplayerBehaviorsFromScene(
p3RuntimeScene,
'MySpriteObject'
)[0];
expect(p3SpriteObject.getX()).to.be(142);
expect(p3SpriteObject.getY()).to.be(143);
markAllPeerMessagesAsProcessed();
// Now, try to change ownership to player 2 and 3 at the "same time".
{
switchToPeer({
playerNumber: 2,
allConnectedPlayers,
});
const { behavior: p2SpriteMultiplayerObjectBehavior } =
getObjectAndMultiplayerBehaviorsFromScene(
p2RuntimeScene,
'MySpriteObject'
)[0];
p2SpriteMultiplayerObjectBehavior.setPlayerObjectOwnership(2);
p2RuntimeScene.renderAndStep(1000 / 60);
switchToPeer({
playerNumber: 3,
allConnectedPlayers,
});
const { behavior: p3SpriteMultiplayerObjectBehavior } =
getObjectAndMultiplayerBehaviorsFromScene(
p3RuntimeScene,
'MySpriteObject'
)[0];
p3SpriteMultiplayerObjectBehavior.setPlayerObjectOwnership(3);
p3RuntimeScene.renderAndStep(1000 / 60);
}
// Verify the host honors the first one (ownership change from 0 to 2).
{
switchToPeer({
playerNumber: 1,
allConnectedPlayers,
});
const { behavior: p1SpriteMultiplayerObjectBehavior } =
getObjectAndMultiplayerBehaviorsFromScene(
p1RuntimeScene,
'MySpriteObject'
)[0];
expect(
p1SpriteMultiplayerObjectBehavior.getPlayerObjectOwnership()
).to.be(0);
p1RuntimeScene.renderAndStep(1000 / 60);
const { behavior: p1SpriteMultiplayerObjectBehaviorUpdated } =
getObjectAndMultiplayerBehaviorsFromScene(
p1RuntimeScene,
'MySpriteObject'
)[0];
expect(
p1SpriteMultiplayerObjectBehaviorUpdated.getPlayerObjectOwnership()
).to.be(2);
markAllPeerMessagesAsProcessed();
}
// Wait so that player 3 retries.
await delay(210);
// Try 4 times and wait for more than 200ms between each try.
{
for (let i = 0; i < 4; i++) {
switchToPeer({
playerNumber: 3,
allConnectedPlayers,
});
p3RuntimeScene.renderAndStep(1000 / 60);
const { behavior: p3SpriteMultiplayerObjectBehavior } =
getObjectAndMultiplayerBehaviorsFromScene(
p3RuntimeScene,
'MySpriteObject'
)[0];
expect(
p3SpriteMultiplayerObjectBehavior.getPlayerObjectOwnership()
).to.be(3);
markAllPeerMessagesAsProcessed();
await delay(210);
}
}
// Check ownership was reverted.
{
switchToPeer({
playerNumber: 3,
allConnectedPlayers,
});
p3RuntimeScene.renderAndStep(1000 / 60);
const { behavior: p3SpriteMultiplayerObjectBehavior } =
getObjectAndMultiplayerBehaviorsFromScene(
p3RuntimeScene,
'MySpriteObject'
)[0];
expect(
p3SpriteMultiplayerObjectBehavior.getPlayerObjectOwnership()
).to.be(0);
markAllPeerMessagesAsProcessed();
}
// Move the object on the player 2:
{
switchToPeer({
playerNumber: 2,
allConnectedPlayers,
});
const { object: p2SpriteObject } =
getObjectAndMultiplayerBehaviorsFromScene(
p2RuntimeScene,
'MySpriteObject'
)[0];
p2SpriteObject.setX(242);
p2SpriteObject.setY(243);
p2RuntimeScene.renderAndStep(1000 / 60);
}
// Check the object is moved on the host.
{
switchToPeer({
playerNumber: 1,
allConnectedPlayers,
});
p1RuntimeScene.renderAndStep(1000 / 60);
const { object: p1SpriteObject } =
getObjectAndMultiplayerBehaviorsFromScene(
p1RuntimeScene,
'MySpriteObject'
)[0];
expect(p1SpriteObject.getX()).to.be(242);
expect(p1SpriteObject.getY()).to.be(243);
}
// Check the object is moved on the other player.
{
switchToPeer({
playerNumber: 3,
allConnectedPlayers,
});
p3RuntimeScene.renderAndStep(1000 / 60);
const {
object: p3SpriteObject,
behavior: p3SpriteMultiplayerObjectBehavior,
} = getObjectAndMultiplayerBehaviorsFromScene(
p3RuntimeScene,
'MySpriteObject'
)[0];
expect(p3SpriteObject.getX()).to.be(242);
expect(p3SpriteObject.getY()).to.be(243);
expect(
p3SpriteMultiplayerObjectBehavior.getPlayerObjectOwnership()
).to.be(2);
}
markAllPeerMessagesAsProcessed();
});
it('synchronizes object behaviors from the host to other players', async () => {
const { switchToPeer, initiateGameWithPlayers } =
createMultiplayerManagersMock();
const allConnectedPlayers = [
{ playerNumber: 1, peerId: 'player-1', isHost: true },
{ playerNumber: 2, peerId: 'player-2' },
];
initiateGameWithPlayers(allConnectedPlayers);
// Create an instance on the host's game:
switchToPeer({
playerNumber: 1,
allConnectedPlayers,
});
const p1RuntimeScene = makeTestRuntimeSceneWithNetworkId();
p1RuntimeScene.createObject('MySpriteObject');
const { object: p1SpriteObjectOriginal } =
getObjectAndMultiplayerBehaviorsFromScene(
p1RuntimeScene,
'MySpriteObject'
)[0];
// Ensure dummy behavior is there.
/** @type {gdjs.DummyRuntimeBehavior | null} */
// @ts-ignore - We know this returns an DummyRuntimeBehavior
const p1DummyBehaviorOriginal =
p1SpriteObjectOriginal.getBehavior('DummyBehavior');
if (!p1DummyBehaviorOriginal) throw new Error('No dummy behavior found');
expect(p1DummyBehaviorOriginal._activated).to.be(true);
p1RuntimeScene.renderAndStep(1000 / 60);
// Check the object is created on the other peer with the behavior.
switchToPeer({
playerNumber: 2,
allConnectedPlayers,
});
const p2RuntimeScene = makeTestRuntimeSceneWithNetworkId();
p2RuntimeScene.renderAndStep(1000 / 60);
const { object: p2SpriteObjectOriginal } =
getObjectAndMultiplayerBehaviorsFromScene(
p2RuntimeScene,
'MySpriteObject'
)[0];
// Ensure dummy behavior is there.
/** @type {gdjs.DummyRuntimeBehavior | null} */
// @ts-ignore - We know this returns an DummyRuntimeBehavior
const p2DummyBehaviorOriginal =
p2SpriteObjectOriginal.getBehavior('DummyBehavior');
if (!p2DummyBehaviorOriginal) throw new Error('No dummy behavior found');
expect(p2DummyBehaviorOriginal._activated).to.be(true);
// Deactivate the behavior on the player 2
{
switchToPeer({
playerNumber: 2,
allConnectedPlayers,
});
const { object: p2SpriteObject } =
getObjectAndMultiplayerBehaviorsFromScene(
p2RuntimeScene,
'MySpriteObject'
)[0];
/** @type {gdjs.DummyRuntimeBehavior | null} */
// @ts-ignore - We know this returns an DummyRuntimeBehavior
const p2DummyBehavior = p2SpriteObject.getBehavior('DummyBehavior');
if (!p2DummyBehavior) throw new Error('No dummy behavior found');
expect(p2DummyBehavior._activated).to.be(true);
p2DummyBehavior.activate(false);
p2RuntimeScene.renderAndStep(1000 / 60);
}
// Forward time on player 1, who is host.
{
switchToPeer({
playerNumber: 1,
allConnectedPlayers,
});
// As the object is not moving, it will not be synced a lot, so we need to wait a bit.
await delay(20);
p1RuntimeScene.renderAndStep(1000 / 60);
}
// Check the behavior is activated again on player 2, as they do not own the object.
{
switchToPeer({
playerNumber: 2,
allConnectedPlayers,
});
// As the object is not moving, it will not be synced a lot, so we need to wait a bit.
await delay(20);
p2RuntimeScene.renderAndStep(1000 / 60);
const { object: p2SpriteObject } =
getObjectAndMultiplayerBehaviorsFromScene(
p2RuntimeScene,
'MySpriteObject'
)[0];
/** @type {gdjs.DummyRuntimeBehavior | null} */
// @ts-ignore - We know this returns an DummyRuntimeBehavior
const p2DummyBehavior = p2SpriteObject.getBehavior('DummyBehavior');
if (!p2DummyBehavior) throw new Error('No dummy behavior found');
expect(p2DummyBehavior._activated).to.be(true);
}
// Deactivate the behavior on the host.
{
switchToPeer({
playerNumber: 1,
allConnectedPlayers,
});
const { object: p1SpriteObject } =
getObjectAndMultiplayerBehaviorsFromScene(
p1RuntimeScene,
'MySpriteObject'
)[0];
/** @type {gdjs.DummyRuntimeBehavior | null} */
// @ts-ignore - We know this returns an DummyRuntimeBehavior
const p1DummyBehavior = p1SpriteObject.getBehavior('DummyBehavior');
if (!p1DummyBehavior) throw new Error('No dummy behavior found');
p1DummyBehavior.activate(false);
// As the object is not moving, it will not be synced a lot, so we need to wait a bit.
await delay(20);
p1RuntimeScene.renderAndStep(1000 / 60);
}
// Check the behavior is deactivated on player 2, as per the host's decision.
{
switchToPeer({
playerNumber: 2,
allConnectedPlayers,
});
// As the object is not moving, it will not be synced a lot, so we need to wait a bit.
await delay(20);
p2RuntimeScene.renderAndStep(1000 / 60);
const { object: p2SpriteObject } =
getObjectAndMultiplayerBehaviorsFromScene(
p2RuntimeScene,
'MySpriteObject'
)[0];
/** @type {gdjs.DummyRuntimeBehavior | null} */
// @ts-ignore - We know this returns an DummyRuntimeBehavior
const p2DummyBehavior = p2SpriteObject.getBehavior('DummyBehavior');
if (!p2DummyBehavior) throw new Error('No dummy behavior found');
expect(p2DummyBehavior._activated).to.be(false);
}
});
it('does not synchronize object behaviors if defined as not synchronized', async () => {
const { switchToPeer, initiateGameWithPlayers } =
createMultiplayerManagersMock();
const allConnectedPlayers = [
{ playerNumber: 1, peerId: 'player-1', isHost: true },
{ playerNumber: 2, peerId: 'player-2' },
];
initiateGameWithPlayers(allConnectedPlayers);
// Create an instance on the host's game:
switchToPeer({
playerNumber: 1,
allConnectedPlayers,
});
const p1RuntimeScene = makeTestRuntimeSceneWithNetworkId();
p1RuntimeScene.createObject('MySpriteObject');
const {
object: p1SpriteObjectOriginal,
behavior: p1SpriteMultiplayerObjectBehavior,
} = getObjectAndMultiplayerBehaviorsFromScene(
p1RuntimeScene,
'MySpriteObject'
)[0];
// Ensure dummy behavior is there.
/** @type {gdjs.DummyRuntimeBehavior | null} */
// @ts-ignore - We know this returns an DummyRuntimeBehavior
const p1DummyBehaviorOriginal =
p1SpriteObjectOriginal.getBehavior('DummyBehavior');
if (!p1DummyBehaviorOriginal) throw new Error('No dummy behavior found');
expect(p1DummyBehaviorOriginal._activated).to.be(true);
// Deactivate it and mark it as not synchronized.
p1DummyBehaviorOriginal.activate(false);
p1SpriteMultiplayerObjectBehavior.enableBehaviorSynchronization(
'DummyBehavior',
false
);
p1RuntimeScene.renderAndStep(1000 / 60);
// Check the object is created on the other peer with the behavior.
switchToPeer({
playerNumber: 2,
allConnectedPlayers,
});
const p2RuntimeScene = makeTestRuntimeSceneWithNetworkId();
p2RuntimeScene.renderAndStep(1000 / 60);
const { object: p2SpriteObjectOriginal } =
getObjectAndMultiplayerBehaviorsFromScene(
p2RuntimeScene,
'MySpriteObject'
)[0];
// Ensure dummy behavior is there.
/** @type {gdjs.DummyRuntimeBehavior | null} */
// @ts-ignore - We know this returns an DummyRuntimeBehavior
const p2DummyBehaviorOriginal =
p2SpriteObjectOriginal.getBehavior('DummyBehavior');
if (!p2DummyBehaviorOriginal) throw new Error('No dummy behavior found');
// It is activated as it is not synchronized.
expect(p2DummyBehaviorOriginal._activated).to.be(true);
});
});
describe('Multiple scene tests', () => {
/**
* @param {gdjs.RuntimeGame} runtimeGame
* @param {string} expectedSceneName
* @returns {{currentScene: gdjs.RuntimeScene}}
*/
const checkCurrentSceneIs = (runtimeGame, expectedSceneName) => {
const currentScene = runtimeGame.getSceneStack().getCurrentScene();
if (!currentScene) throw new Error('No current scene found.');
expect(currentScene.getName()).to.be(expectedSceneName);
return { currentScene };
};
it('synchronizes scenes from the host to other players', async () => {
const { switchToPeer, initiateGameWithPlayers } =
createMultiplayerManagersMock();
const allConnectedPlayers = [
{ playerNumber: 1, peerId: 'player-1', isHost: true },
{ playerNumber: 2, peerId: 'player-2' },
];
initiateGameWithPlayers(allConnectedPlayers);
const gameLayoutData = [
getFakeSceneAndExtensionData({ name: 'Scene1' }).sceneData,
getFakeSceneAndExtensionData({ name: 'Scene2' }).sceneData,
getFakeSceneAndExtensionData({ name: 'Scene3' }).sceneData,
];
// Launch two games.
const p1RuntimeGame = gdjs.getPixiRuntimeGame({
layouts: gameLayoutData,
});
await p1RuntimeGame._resourcesLoader.loadAllResources(() => {});
const p2RuntimeGame = gdjs.getPixiRuntimeGame({
layouts: gameLayoutData,
});
await p2RuntimeGame._resourcesLoader.loadAllResources(() => {});
// Launch two scenes on the host:
switchToPeer({
playerNumber: 1,
allConnectedPlayers,
});
p1RuntimeGame.getSceneStack().push('Scene1');
p1RuntimeGame.getSceneStack().push('Scene3');
checkCurrentSceneIs(p1RuntimeGame, 'Scene3');
p1RuntimeGame.getSceneStack().step(1000 / 60);
// Launch the game on a client, with just the first scene.
switchToPeer({
playerNumber: 2,
allConnectedPlayers,
});
p2RuntimeGame.getSceneStack().push('Scene1');
// Ensure the second scene (Scene3) is started.
checkCurrentSceneIs(p2RuntimeGame, 'Scene1');
p2RuntimeGame.getSceneStack().step(1000 / 60);
p2RuntimeGame.getSceneStack().step(1000 / 60);
checkCurrentSceneIs(p2RuntimeGame, 'Scene3');
p2RuntimeGame.getSceneStack().step(1000 / 60);
// Start again the same scene (Scene3) on the host's game
switchToPeer({
playerNumber: 1,
allConnectedPlayers,
});
let p1FirstScene3NetworkId;
checkCurrentSceneIs(p1RuntimeGame, 'Scene3');
{
p1RuntimeGame.getSceneStack().step(1000 / 60);
const { currentScene } = checkCurrentSceneIs(p1RuntimeGame, 'Scene3');
p1FirstScene3NetworkId = currentScene.networkId;
}
p1RuntimeGame.getSceneStack().push('Scene3');
let p1SecondScene3NetworkId;
{
p1RuntimeGame.getSceneStack().step(1000 / 60);
const { currentScene } = checkCurrentSceneIs(p1RuntimeGame, 'Scene3');
p1SecondScene3NetworkId = currentScene.networkId;
}
expect(p1FirstScene3NetworkId).not.to.be(null);
expect(p1SecondScene3NetworkId).not.to.be(null);
expect(p1FirstScene3NetworkId).not.to.be(p1SecondScene3NetworkId);
// Ensure the second Scene3 is also started on the player.
switchToPeer({
playerNumber: 2,
allConnectedPlayers,
});
{
p2RuntimeGame.getSceneStack().step(1000 / 60);
const { currentScene } = checkCurrentSceneIs(p2RuntimeGame, 'Scene3');
expect(currentScene.networkId).to.be(p1FirstScene3NetworkId);
}
{
p2RuntimeGame.getSceneStack().step(1000 / 60);
const { currentScene } = checkCurrentSceneIs(p2RuntimeGame, 'Scene3');
expect(currentScene.networkId).to.be(p1SecondScene3NetworkId);
}
// Remove the two Scene3 on the host's game.
switchToPeer({
playerNumber: 1,
allConnectedPlayers,
});
p1RuntimeGame.getSceneStack().pop();
p1RuntimeGame.getSceneStack().pop();
let p1Scene1NetworkId;
{
p1RuntimeGame.getSceneStack().step(1000 / 60);
const { currentScene } = checkCurrentSceneIs(p1RuntimeGame, 'Scene1');
p1Scene1NetworkId = currentScene.networkId;
}
// Check that the player also goes back to Scene1:
switchToPeer({
playerNumber: 2,
allConnectedPlayers,
});
checkCurrentSceneIs(p2RuntimeGame, 'Scene3');
{
p2RuntimeGame.getSceneStack().step(1000 / 60);
p2RuntimeGame.getSceneStack().step(1000 / 60);
const { currentScene } = checkCurrentSceneIs(p2RuntimeGame, 'Scene1');
expect(currentScene.networkId).to.be(p1Scene1NetworkId);
}
});
it('reconciles a scene launched both by the host and by a player', async () => {
const {
switchToPeer,
markAllPeerMessagesAsProcessed,
initiateGameWithPlayers,
} = createMultiplayerManagersMock();
const allConnectedPlayers = [
{ playerNumber: 1, peerId: 'player-1', isHost: true },
{ playerNumber: 2, peerId: 'player-2' },
];
initiateGameWithPlayers(allConnectedPlayers);
const gameLayoutData = [
getFakeSceneAndExtensionData({ name: 'Scene1' }).sceneData,
getFakeSceneAndExtensionData({ name: 'Scene2' }).sceneData,
getFakeSceneAndExtensionData({ name: 'Scene3' }).sceneData,
];
// Launch two games.
const p1RuntimeGame = gdjs.getPixiRuntimeGame({
layouts: gameLayoutData,
});
await p1RuntimeGame._resourcesLoader.loadAllResources(() => {});
const p2RuntimeGame = gdjs.getPixiRuntimeGame({
layouts: gameLayoutData,
});
await p2RuntimeGame._resourcesLoader.loadAllResources(() => {});
// Launch two scenes on the host's game:
switchToPeer({
playerNumber: 1,
allConnectedPlayers,
});
p1RuntimeGame.getSceneStack().push('Scene1');
p1RuntimeGame.getSceneStack().step(1000 / 60);
checkCurrentSceneIs(p1RuntimeGame, 'Scene1');
// Launch the game on a client, with just the first scene.
switchToPeer({
playerNumber: 2,
allConnectedPlayers,
});
p2RuntimeGame.getSceneStack().push('Scene1');
p2RuntimeGame.getSceneStack().step(1000 / 60);
checkCurrentSceneIs(p2RuntimeGame, 'Scene1');
markAllPeerMessagesAsProcessed();
p2RuntimeGame.getSceneStack().step(1000 / 60);
// Launch a second scene, first on the player:
p2RuntimeGame.getSceneStack().push('Scene2');
p2RuntimeGame.getSceneStack().step(1000 / 60);
expect(
checkCurrentSceneIs(p2RuntimeGame, 'Scene2').currentScene.networkId
).to.be(null);
// Launch a second scene, this time on the host's game:
switchToPeer({
playerNumber: 1,
allConnectedPlayers,
});
p1RuntimeGame.getSceneStack().push('Scene2');
p1RuntimeGame.getSceneStack().step(1000 / 60);
const p1Scene2NetworkId = checkCurrentSceneIs(p1RuntimeGame, 'Scene2')
.currentScene.networkId;
// Check the network id of the scene on the player is reconciled with the host.
switchToPeer({
playerNumber: 2,
allConnectedPlayers,
});
expect(
checkCurrentSceneIs(p2RuntimeGame, 'Scene2').currentScene.networkId
).to.be(null);
p2RuntimeGame.getSceneStack().step(1000 / 60);
p2RuntimeGame.getSceneStack().step(1000 / 60);
expect(
checkCurrentSceneIs(p2RuntimeGame, 'Scene2').currentScene.networkId
).to.be(p1Scene2NetworkId);
});
});
describe('Player joins and leaves', () => {
it('detects a player leaving and send it to other players', async () => {
const { switchToPeer, initiateGameWithPlayers } =
createMultiplayerManagersMock();
const allConnectedPlayers = [
{ playerNumber: 1, peerId: 'player-1', isHost: true },
{ playerNumber: 2, peerId: 'player-2' },
{ playerNumber: 3, peerId: 'player-3' },
];
initiateGameWithPlayers(allConnectedPlayers);
const runtimeScene = makeTestRuntimeSceneWithNetworkId();
// Player 2 leaves.
const newConnectedPlayers = [
{ playerNumber: 1, peerId: 'player-1', isHost: true },
{ playerNumber: 3, peerId: 'player-3' },
];
// Host sees the player 2 leaving.
switchToPeer({
playerNumber: 1,
allConnectedPlayers: newConnectedPlayers,
justDisconnectedPeers: ['player-2'],
});
runtimeScene.renderAndStep(1000 / 60);
// Player 3 sees the player 2 leaving, via the heartbeat from the host.
switchToPeer({
playerNumber: 3,
allConnectedPlayers: newConnectedPlayers,
});
runtimeScene.renderAndStep(1000 / 60);
const p2PlayersLeft =
gdjs.multiplayerMessageManager.getPlayersWhoJustLeft();
expect(p2PlayersLeft).to.be.eql([2]);
});
it('detects a player joining and send it to other players', async () => {
const { switchToPeer, initiateGameWithPlayers } =
createMultiplayerManagersMock();
const allConnectedPlayers = [
{ playerNumber: 1, peerId: 'player-1', isHost: true },
{ playerNumber: 3, peerId: 'player-3' },
];
initiateGameWithPlayers(allConnectedPlayers);
const runtimeScene = makeTestRuntimeSceneWithNetworkId();
// Heartbeats are sent every second, so wait for a bit.
await delay(1000);
// Player 2 joins.
const newConnectedPlayers = [
{ playerNumber: 1, peerId: 'player-1', isHost: true },
{ playerNumber: 2, peerId: 'player-2' },
{ playerNumber: 3, peerId: 'player-3' },
];
// Host sees the player 2 joining and send them a heartbeat.
switchToPeer({
playerNumber: 1,
allConnectedPlayers: newConnectedPlayers,
});
runtimeScene.renderAndStep(1000 / 60);
// Player 2 receives the heartbeat and respond.
switchToPeer({
playerNumber: 2,
allConnectedPlayers: newConnectedPlayers,
});
runtimeScene.renderAndStep(1000 / 60);
// Host receives player 2 response and send them back their ping.
switchToPeer({
playerNumber: 1,
allConnectedPlayers: newConnectedPlayers,
});
runtimeScene.renderAndStep(1000 / 60);
const p1PlayersJoined =
gdjs.multiplayerMessageManager.getPlayersWhoJustJoined();
expect(p1PlayersJoined).to.be.eql([2]);
// Player 3 also sees the player 2 joining.
switchToPeer({
playerNumber: 3,
allConnectedPlayers: newConnectedPlayers,
});
runtimeScene.renderAndStep(1000 / 60);
const p3PlayersJoined =
gdjs.multiplayerMessageManager.getPlayersWhoJustJoined();
expect(p3PlayersJoined).to.be.eql([2]);
});
});
});
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