implement beardification on Bukkit (closes #370)

platforms/bukkit/common/src/main/java/com/dfsek/terra/bukkit/BukkitAddon.java

@@ -5,8 +5,10 @@ import ca.solostudios.strata.version.Version;
 
 import com.dfsek.terra.api.addon.BaseAddon;
 import com.dfsek.terra.api.event.events.config.ConfigurationLoadEvent;
+import com.dfsek.terra.api.event.events.config.pack.ConfigPackPreLoadEvent;
 import com.dfsek.terra.api.event.functional.FunctionalEventHandler;
 import com.dfsek.terra.api.world.biome.Biome;
+import com.dfsek.terra.bukkit.config.PreLoadCompatibilityOptions;
 import com.dfsek.terra.bukkit.config.VanillaBiomeProperties;
 
 
@@ -21,6 +23,12 @@ public class BukkitAddon implements BaseAddon {
     
     @Override
     public void initialize() {
+        terraBukkitPlugin.getEventManager()
+                   .getHandler(FunctionalEventHandler.class)
+                   .register(this, ConfigPackPreLoadEvent.class)
+                   .then(event -> event.getPack().getContext().put(event.loadTemplate(new PreLoadCompatibilityOptions())))
+                   .global();
+        
         terraBukkitPlugin.getEventManager()
                          .getHandler(FunctionalEventHandler.class)
                          .register(this, ConfigurationLoadEvent.class)

platforms/bukkit/common/src/main/java/com/dfsek/terra/bukkit/config/PreLoadCompatibilityOptions.java

@@ -0,0 +1,60 @@
+/*
+ * This file is part of Terra.
+ *
+ * Terra is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * Terra is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with Terra.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package com.dfsek.terra.bukkit.config;
+
+import com.dfsek.tectonic.api.config.template.ConfigTemplate;
+import com.dfsek.tectonic.api.config.template.annotations.Default;
+import com.dfsek.tectonic.api.config.template.annotations.Value;
+
+import com.dfsek.terra.api.properties.Properties;
+
+
+@SuppressWarnings("FieldMayBeFinal")
+public class PreLoadCompatibilityOptions implements ConfigTemplate, Properties {
+    @Value("minecraft.use-vanilla-biomes")
+    @Default
+    private boolean vanillaBiomes = false;
+    
+    @Value("minecraft.beard.enable")
+    @Default
+    private boolean beard = true;
+    
+    @Value("minecraft.beard.threshold")
+    @Default
+    private double beardThreshold = 0.5;
+    
+    @Value("minecraft.beard.air-threshold")
+    @Default
+    private double airThreshold = -0.5;
+    
+    public boolean useVanillaBiomes() {
+        return vanillaBiomes;
+    }
+    
+    public boolean isBeard() {
+        return beard;
+    }
+    
+    public double getBeardThreshold() {
+        return beardThreshold;
+    }
+    
+    public double getAirThreshold() {
+        return airThreshold;
+    }
+}