cleanup

src/main/java/org/violetmoon/quark/content/management/module/HotbarChangerModule.java

@@ -58,7 +58,6 @@ public void onKeyInput(ZInput.Key event) {
 			acceptInput(event.getKey());
 		}
 
-		//fixme Needs splitting up
 		@PlayEvent
 		public void hudHeathPre(ZRenderGuiOverlay.PlayerHealth.Pre event) {
 			float shift = -getRealHeight(event.getPartialTick()) + 22;

src/main/java/org/violetmoon/zeta/event/bus/helpers/LivingGetter.java

@@ -2,7 +2,6 @@
 
 import net.minecraft.world.entity.LivingEntity;
 
-//fixme Move this into a lifelong home & make other interfaces use this more
 public interface LivingGetter {
     LivingEntity getEntity();
 }

src/main/java/org/violetmoon/zeta/event/bus/helpers/PlayerGetter.java

@@ -3,7 +3,6 @@
 import net.minecraft.world.entity.LivingEntity;
 import net.minecraft.world.entity.player.Player;
 
-//fixme Move this into a lifelong home & make other interfaces use this more
 public interface PlayerGetter extends LivingGetter {
 	default Player getPlayer() {
 		LivingEntity living = getEntity();

src/main/java/org/violetmoon/zeta/temp/EnvType.java

@@ -0,0 +1,31 @@
+package org.violetmoon.zeta.temp;
+
+/**
+ * Represents a type of environment.
+ *
+ * <p>A type of environment is a jar file in a <i>Minecraft</i> version's json file's {@code download}
+ * subsection, including the {@code client.jar} and the {@code server.jar}.</p>
+ *
+ * @see Environment
+ */
+public enum EnvType {
+    /**
+     * Represents the client environment type, in which the {@code client.jar} for a
+     * <i>Minecraft</i> version is the main game jar.
+     *
+     * <p>A client environment type has all client logic (client rendering and integrated
+     * server logic), the data generator logic, and dedicated server logic. It encompasses
+     * everything that is available on the {@linkplain #SERVER server environment type}.</p>
+     */
+    CLIENT,
+    /**
+     * Represents the server environment type, in which the {@code server.jar} for a
+     * <i>Minecraft</i> version is the main game jar.
+     *
+     * <p>A server environment type has the dedicated server logic and data generator
+     * logic, which are all included in the {@linkplain #CLIENT client environment type}.
+     * However, the server environment type has its libraries embedded compared to the
+     * client.</p>
+     */
+    SERVER
+}

src/main/java/org/violetmoon/zeta/temp/Environment.java

@@ -0,0 +1,27 @@
+package org.violetmoon.zeta.temp;
+
+import java.lang.annotation.*;
+
+/**
+ * Applied to declare that the annotated element is present only in the specified environment.
+ *
+ * <p>Use with caution, as Fabric-loader will remove the annotated element in a mismatched environment!</p>
+ *
+ * <p>When the annotated element is removed, bytecode associated with the element will not be removed.
+ * For example, if a field is removed, its initializer code will not, and will cause an error on execution.</p>
+ *
+ * <p>If an overriding method has this annotation and its overridden method doesn't,
+ * unexpected behavior may happen. If an overridden method has this annotation
+ * while the overriding method doesn't, it is safe, but the method can be used from
+ * the overridden class only in the specified environment.</p>
+ */
+@Retention(RetentionPolicy.CLASS)
+@Target({ElementType.TYPE, ElementType.METHOD, ElementType.FIELD, ElementType.CONSTRUCTOR, ElementType.PACKAGE})
+@Documented
+public @interface Environment {
+    /**
+     * Returns the environment type that the annotated element is only present in.
+     */
+    EnvType value();
+}
+