Move use-direct-adapters to system property

bootstrap/spigot/src/main/java/org/geysermc/platform/spigot/GeyserSpigotPlugin.java

@@ -183,7 +183,7 @@ public class GeyserSpigotPlugin extends JavaPlugin implements GeyserBootstrap {
         this.geyserInjector = new GeyserSpigotInjector(isViaVersion);
         this.geyserInjector.initializeLocalChannel(this);
 
-        if (connector.getConfig().isUseAdapters()) {
+        if (Boolean.parseBoolean(System.getProperty("Geyser.UseDirectAdapters", "true"))) {
             try {
                 String name = Bukkit.getServer().getClass().getPackage().getName();
                 String nmsVersion = name.substring(name.lastIndexOf('.') + 1);
@@ -208,7 +208,7 @@ public class GeyserSpigotPlugin extends JavaPlugin implements GeyserBootstrap {
                 }
             }
         } else {
-            geyserLogger.debug("Not using NMS adapter as it is disabled in the config.");
+            geyserLogger.debug("Not using NMS adapter as it is disabled via system property.");
         }
         if (this.geyserWorldManager == null) {
             // No NMS adapter

connector/src/main/java/org/geysermc/connector/configuration/GeyserConfiguration.java

@@ -171,8 +171,6 @@ public interface GeyserConfiguration {
 
     int getMtu();
 
-    boolean isUseAdapters();
-
     boolean isUseDirectConnection();
 
     int getConfigVersion();

connector/src/main/java/org/geysermc/connector/configuration/GeyserJacksonConfiguration.java

@@ -247,9 +247,6 @@ public abstract class GeyserJacksonConfiguration implements GeyserConfiguration
     @JsonProperty("mtu")
     private int mtu = 1400;
 
-    @JsonProperty("use-adapters")
-    private boolean useAdapters = true;
-
     @JsonProperty("use-direct-connection")
     private boolean useDirectConnection = true;
 

connector/src/main/resources/config.yml

@@ -195,10 +195,6 @@ enable-proxy-connections: false
 # 1400 is the default.
 # mtu: 1400
 
-# Whether to use direct server methods to retrieve information such as block states.
-# Turning this off for Spigot will stop NMS from being used but will have a performance impact.
-use-adapters: true
-
 # Whether to connect directly into the Java server without creating a TCP connection.
 # This should only be disabled if a plugin that interfaces with packets or the network does not work correctly with Geyser.
 # If enabled on plugin versions, the remote address and port sections are ignored