Set up basic deterministic lockstep

server/tests/LocationGameStateTests.cpp

@@ -8,7 +8,7 @@ namespace {
 
 int fail(const char* message)
 {
-	std::cerr << message << '\n';
+	std::cout << "LocationGameStateTests: " << message << std::endl;
 	return EXIT_FAILURE;
 }
 
@@ -78,6 +78,13 @@ int main()
 		multiplayerBattleZoneConfig->startStatePath) {
 		return fail("Battle Zone modes do not share their initial state");
 	}
+	if (multiplayerBattleZoneConfig->networkPlayerSlots.size() != 2 ||
+		multiplayerBattleZoneConfig->networkPlayerSlots[0] != "player" ||
+		multiplayerBattleZoneConfig->networkPlayerSlots[1] !=
+			"player2" ||
+		multiplayerBattleZoneConfig->networkCompatibility.empty()) {
+		return fail("Multiplayer player slots were not loaded");
+	}
 
 	FRG::LocationDefinition definition;
 	definition.config.id = "test_location";
@@ -135,7 +142,7 @@ int main()
 	FRG::InternalGameServer server;
 	server.startCampaign(battleZone, {}, false, true);
 	const auto snapshot = server.snapshot();
-	const auto bot = snapshot->players.find("battle_zone_test_bot");
+	const auto bot = snapshot->players.find("player2");
 	if (bot == snapshot->players.end())
 		return fail("Battle Zone test bot was not created");
 	const auto stand = static_cast<std::size_t>(FRG::AnimationState::STAND);
@@ -148,14 +155,37 @@ int main()
 	FRG::InternalGameServer networkServer;
 	FRG::CampaignConfig multiplayerBattleZone = battleZone;
 	multiplayerBattleZone.id = "battle_zone_multiplayer";
+	multiplayerBattleZone.networkPlayerSlots = {
+		"player", "player2"};
 	networkServer.startCampaign(multiplayerBattleZone, {}, true, false);
 	const auto networkSnapshot = networkServer.snapshot();
 	if (networkSnapshot->campaignId != "battle_zone_multiplayer")
 		return fail("Network campaign ID was not retained");
 	if (networkSnapshot->players.count("player") != 1)
 		return fail("Network campaign shared player was not created");
-	if (networkSnapshot->players.count("battle_zone_test_bot") != 0)
+	if (networkSnapshot->players.count("player2") != 0)
 		return fail("Network campaign unexpectedly created the test bot");
 
+	nlohmann::json loadedNetworkState;
+	networkServer.save(loadedNetworkState);
+	loadedNetworkState["players"]["player2"] =
+		loadedNetworkState["players"]["player"];
+	loadedNetworkState["players"]["player2"]["position"] =
+		{4.f, 0.f, 5.f};
+	networkServer.load(loadedNetworkState);
+	const auto loadedNetworkSnapshot = networkServer.snapshot();
+	const auto loadedNetworkBot =
+		loadedNetworkSnapshot->players.find("player2");
+	if (loadedNetworkBot == loadedNetworkSnapshot->players.end() ||
+		loadedNetworkBot->second.state.animationFrameCounts[stand] <= 1 ||
+		loadedNetworkBot->second.state.animationFrameCounts[walk] <= 1) {
+		return fail(
+			"Loaded multiplayer slot did not restore animation metadata");
+	}
+	if (!loadedNetworkBot->second.state.position.isApprox(
+			Eigen::Vector3f(4.f, 0.f, 5.f))) {
+		return fail("Loaded multiplayer slot position was overwritten");
+	}
+
 	return EXIT_SUCCESS;
 }