53 lines
2.2 KiB
Java
53 lines
2.2 KiB
Java
package us.myles.ViaVersion.velocity.providers;
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import us.myles.ViaVersion.VelocityPlugin;
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import us.myles.ViaVersion.api.Via;
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import us.myles.ViaVersion.api.data.UserConnection;
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import us.myles.ViaVersion.api.protocol.ProtocolVersion;
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import us.myles.ViaVersion.protocols.base.VersionProvider;
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import us.myles.ViaVersion.velocity.platform.VelocityViaInjector;
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import java.util.Arrays;
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import java.util.stream.IntStream;
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public class VelocityVersionProvider extends VersionProvider {
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@Override
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public int getServerProtocol(UserConnection user) throws Exception {
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int playerVersion = user.getProtocolInfo().getProtocolVersion();
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IntStream versions = com.velocitypowered.api.network.ProtocolVersion.SUPPORTED_VERSIONS.stream()
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.mapToInt(com.velocitypowered.api.network.ProtocolVersion::getProtocol);
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// Modern forwarding mode needs 1.13 Login plugin message
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if (VelocityViaInjector.getPlayerInfoForwardingMode != null
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&& ((Enum<?>) VelocityViaInjector.getPlayerInfoForwardingMode.invoke(VelocityPlugin.PROXY.getConfiguration()))
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.name().equals("MODERN")) {
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versions = versions.filter(ver -> ver >= ProtocolVersion.v1_13.getId());
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}
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int[] compatibleProtocols = versions.toArray();
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// Bungee supports it
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if (Arrays.binarySearch(compatibleProtocols, playerVersion) >= 0)
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return playerVersion;
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// Older than bungee supports, get the lowest version
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if (playerVersion < compatibleProtocols[0]) {
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return compatibleProtocols[0];
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}
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// Loop through all protocols to get the closest protocol id that bungee supports (and that viaversion does too)
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// TODO: This needs a better fix, i.e checking ProtocolRegistry to see if it would work.
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// This is more of a workaround for snapshot support by bungee.
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for (int i = compatibleProtocols.length - 1; i >= 0; i--) {
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int protocol = compatibleProtocols[i];
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if (playerVersion > protocol && ProtocolVersion.isRegistered(protocol))
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return protocol;
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}
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Via.getPlatform().getLogger().severe("Panic, no protocol id found for " + playerVersion);
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return playerVersion;
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}
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}
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