Created alchemy extension

Extensions/Alchemy/build.gradle

@@ -0,0 +1,14 @@
+dependencies {
+    compileOnly 'org.spigotmc:spigot-api:1.15.2-R0.1-SNAPSHOT'
+    compileOnly project(':plugin')
+}
+
+jar{
+    archiveFileName = project.name + " Extension" + ".jar"
+}
+
+description = 'Alchemy'
+
+tasks.withType(Jar) {
+    destinationDirectory = file("$rootDir/bin/")
+}

Extensions/Alchemy/src/main/java/com/willfp/ecoenchants/alchemy/Alchemy.java

@@ -0,0 +1,46 @@
+package com.willfp.ecoenchants.alchemy;
+
+import com.willfp.ecoenchants.EcoEnchantsPlugin;
+import com.willfp.ecoenchants.enchantments.EcoEnchant;
+import com.willfp.ecoenchants.enchantments.util.EnchantChecks;
+import com.willfp.ecoenchants.enchantments.util.EnchantmentUtils;
+import org.bukkit.NamespacedKey;
+import org.bukkit.entity.LivingEntity;
+import org.bukkit.event.EventHandler;
+import org.bukkit.event.entity.EntityPotionEffectEvent;
+import org.bukkit.persistence.PersistentDataType;
+import org.bukkit.potion.PotionEffect;
+
+public class Alchemy extends EcoEnchant {
+    public Alchemy() {
+        super("alchemy", EnchantmentType.NORMAL, AlchemyMain.class);
+    }
+
+    @EventHandler
+    public void onPotionEffect(EntityPotionEffectEvent event) {
+        if(event.getNewEffect() == null) return;
+        if(!(event.getEntity() instanceof LivingEntity)) return;
+
+        LivingEntity entity = (LivingEntity) event.getEntity();
+
+        int level = EnchantChecks.getArmorPoints(entity, this);
+        if(level == 0) return;
+
+        if(!EnchantmentUtils.passedChance(this, level))
+            return;
+
+        PotionEffect effect = event.getNewEffect();
+
+        PotionEffect newEffect = new PotionEffect(
+                effect.getType(),
+                effect.getDuration(),
+                ((effect.getAmplifier() + 1) * 2) - 1,
+                effect.isAmbient(),
+                effect.hasParticles(),
+                effect.hasIcon()
+        );
+
+        entity.removePotionEffect(effect.getType());
+        entity.addPotionEffect(newEffect);
+    }
+}

Extensions/Alchemy/src/main/java/com/willfp/ecoenchants/alchemy/AlchemyMain.java

@@ -0,0 +1,15 @@
+package com.willfp.ecoenchants.alchemy;
+
+import com.willfp.ecoenchants.extensions.Extension;
+
+public class AlchemyMain extends Extension {
+    @Override
+    public void onEnable() {
+
+    }
+
+    @Override
+    public void onDisable() {
+
+    }
+}

Extensions/Alchemy/src/main/resources/enchants/normal/alchemy.yml

@@ -0,0 +1,26 @@
+#
+# Alchemy EcoEnchant
+#
+
+name: "Alchemy"
+description: Chance to double the strength of potions
+enabled: true
+
+obtaining:
+  table: true
+  villager: true
+  loot: true
+  rarity: legendary
+
+general-config:
+  targets:
+    - helmet
+    - chestplate
+    - leggings
+    - boots
+  grindstoneable: true
+  conflicts: []
+  maximum-level: 6
+
+config:
+  chance-per-level: 4

Extensions/Alchemy/src/main/resources/extension.yml

@@ -0,0 +1,3 @@
+name: Alchemy
+main: com.willfp.ecoenchants.alchemy.AlchemyMain
+version: 1.0.0

Plugin/src/main/java/com/willfp/ecoenchants/config/UpdatingYamlConfig.java

@@ -1,6 +1,7 @@
 package com.willfp.ecoenchants.config;
 
 import com.willfp.ecoenchants.EcoEnchantsPlugin;
+import com.willfp.ecoenchants.util.Logger;
 import org.bukkit.configuration.InvalidConfigurationException;
 import org.bukkit.configuration.file.YamlConfiguration;
 
@@ -43,6 +44,10 @@ public void update() {
             config.load(configFile);
 
             InputStream newIn = EcoEnchantsPlugin.getInstance().getResource(name);
+            if(newIn == null) {
+                Logger.error(name + " is null?");
+                return;
+            }
             BufferedReader reader = new BufferedReader(new InputStreamReader(newIn, StandardCharsets.UTF_8));
             YamlConfiguration newConfig = new YamlConfiguration();
             newConfig.load(reader);

settings.gradle

@@ -35,3 +35,5 @@ findProject(':Biomes').projectDir = file('Extensions/Biomes')
 include('SprintArtifacts')
 findProject(':SprintArtifacts').projectDir = file('Extensions/SprintArtifacts')
 
+include('Alchemy')
+findProject(':Alchemy').projectDir = file('Extensions/Alchemy')