Version bump, preparation for the layer subsystem implementation

NEXT_RELEASE_DRAFT.md

@@ -1,33 +1,22 @@
-## Features targeted for 22.1.0.0-alpha.0
-* `[PlutoGUI]` Initial implementation of the new font renderer
-    * Full rewrite
-    * High quality font rendering
-        * Subpixel rendering support [?]
-    * Possibly a new system for bitmap fonts
-* Improve upon the support of thread-local Pluto instances
-    * The long term goal is to allow an unlimited amount of Pluto applications at any given time
-
 ## Features targeted for 22.2.0.0-alpha.0
-* The stage subsystem
+* The layer subsystem
-    * A "stage", in this context, is a set of assets bound together
+    * A "layer", in this context, is a set of assets bound together
-      by programming logic, not necessarily a game level.
+      by programming logic.
-      Stage switching and asset management are handled by the engine.
+      Layer switching and asset management are handled by the engine.
-    * Upon stage switch
+    * Layers can be stacked on top of each other and run sequentially
+      from bottom to top
+    * Upon layer switch
         1. Unload unused assets
         2. Load new assets
-    * Provide multiple means of stage switching
+    * Provide multiple means of layer switching
-        * Three modes with the initial release
+        * Two modes with the initial release, asynchronous switching will come at a later date
             1. Instant switch
                 * Assets will be loaded and unloaded synchronously
-                * The stage switch will happen in one frame
+                * The layer switch will happen in one frame
             2. Deferred switch
-                * The stage will continue running until all assets load
+                * The layer will continue running until all assets load
                 * Assets will load synchronously, but at a slower pace
                   to avoid frame stutter
-            3. Asynchronous switch
-                * Assets will be loaded in asynchronously, where applicable
-                * Falls back to deferred switching for synchronous loading,
-                  such as OpenGL texture upload
     * Automated asset loading
         * All asset management will eventually be handled by `PlutoCore`
             * This includes audio clips, textures, sprites
@@ -39,3 +28,23 @@
       instances
     * Allow stages to be inherited from, creating a stack-like structure
 * `[PlutoAudio]` Integrate the Audio API with the Stage API
+
+## Features targeted for an unspecified future release
+* `[PlutoSpritesheet]` Expanded capabilities 
+  * Support for 9-slice rendering
+  * Support for animated sprite rendering
+  * Support for multidirectional sprite rendering
+  * A spritesheet skeleton editor
+
+* `[PlutoRuntime]`
+  * Asynchronous switch
+    * Assets will be loaded in asynchronously, where applicable
+    * Falls back to deferred switching for synchronous loading,
+    such as OpenGL texture upload
+  
+* `[PlutoGUI]` A fully-fledged GUI engine
+    * Improve font-rendering capabilities
+        * Subpixel rendering support [?]
+    * Reimplement support for bitmap fonts
+* Improve upon the support of thread-local Pluto instances
+    * The long term goal is to allow an unlimited amount of Pluto applications at any given time

README.md

@@ -50,7 +50,6 @@ See `NEXT_RELEASE_DRAFT.md` for details.
 ### Very high priority
 [ *Implemented in the current release.* ]
  * Improve image loading capabilities, possibly rewrite PlutoLib#TPL
- * The stage system and automated asset loading
 
 ### High priority
 [ *Implemented in the next release.* ]

UPDATE_NOTES.md

@@ -1,3 +1,15 @@
+## 22.2.0.0-alpha.0
+* `[PlutoRuntime,PlutoCore]` **Initial implementation of the layer system (formerly known as "stage")**
+* `[PlutoComponent]` **Added support for dependencies and strengtened type checks**
+* `[PlutoComponent]` *Removed* `IComponent` as it was redundant to `AbstractComponent`
+* `[Pluto*]` *Removed* JSR 305 annotations in favor of JetBrains annotations
+* `[Pluto*]` *Removed* the `ConstantExpression` annotation in favor of `Contract`
+* `[PlutoRuntime]` *Moved* `ThreadSensitive` to `org.plutoengine.address`
+* `[PlutoAudio]` Transformed into a PlutoLocalComponent
+* `[PlutoAudio]` `IAudioStream` is now `AutoCloseable`
+* `[PlutoCore]` `InputBus` now tied to a specific `Display` instead of searching for one in the Local 
+* `[PlutoCore]` Separated `Mouse` and `Keyboard` from `InputBus` into child components
+
 ## 22.1.0.0-alpha.1
 * `plutoengine-demos/basic-application` Made the gradient in the fragment font shader rotatable
 

buildSrc/src/main/kotlin/org/plutoengine/Versions.kt

@@ -17,13 +17,13 @@ object Versions {
     const val steamworks4jServerVersion = "1.8.0"
 
     const val versionYear = 22
-    const val versionMajor = 1
+    const val versionMajor = 2
     const val versionMinor = 0
     const val versionPatch = 0
 
     const val isPrerelease = true
     const val prereleaseName = "alpha"
-    const val prerealeaseUpdate = 1
+    const val prerealeaseUpdate = 0
 
     val versionFull =
         if (isPrerelease)

engine-core/plutoaudio/src/main/java/org/plutoengine/audio/AudioLoader.java

@@ -4,6 +4,9 @@ import org.lwjgl.stb.STBVorbis;
 import org.lwjgl.stb.STBVorbisInfo;
 import org.lwjgl.system.MemoryStack;
 import org.lwjgl.system.MemoryUtil;
+import org.plutoengine.buffer.BufferHelper;
+import org.plutoengine.logger.Logger;
+import org.plutoengine.logger.SmartSeverity;
 
 import java.io.IOException;
 import java.nio.ByteBuffer;
@@ -12,10 +15,6 @@ import java.nio.ShortBuffer;
 import java.nio.file.Files;
 import java.nio.file.Path;
 
-import org.plutoengine.buffer.BufferHelper;
-import org.plutoengine.logger.Logger;
-import org.plutoengine.logger.SmartSeverity;
-
 public class AudioLoader
 {
     /**

engine-core/plutoaudio/src/main/java/org/plutoengine/audio/IAudioStream.java

@@ -2,7 +2,7 @@ package org.plutoengine.audio;
 
 import java.nio.ShortBuffer;
 
-public interface IAudioStream
+public interface IAudioStream extends AutoCloseable
 {
     int getSamples(ShortBuffer pcm);
 

engine-core/plutoaudio/src/main/java/org/plutoengine/audio/al/AudioEngine.java

@@ -4,10 +4,11 @@ import org.joml.Vector3f;
 import org.lwjgl.openal.*;
 import org.lwjgl.system.MemoryUtil;
 import org.plutoengine.Pluto;
+import org.plutoengine.component.ComponentToken;
+import org.plutoengine.component.PlutoLocalComponent;
 import org.plutoengine.logger.Logger;
 import org.plutoengine.logger.SmartSeverity;
 
-import javax.annotation.concurrent.ThreadSafe;
 import java.nio.ByteBuffer;
 import java.nio.IntBuffer;
 
@@ -15,16 +16,21 @@ import java.nio.IntBuffer;
  * @author 493msi
  *
  */
-@ThreadSafe
+public class AudioEngine extends PlutoLocalComponent
-public class AudioEngine
 {
-    private static final ThreadLocal<Long> device = ThreadLocal.withInitial(() -> MemoryUtil.NULL);
+    private long device = MemoryUtil.NULL;
+    private long context = MemoryUtil.NULL;
+    private ALCapabilities capabilities;
 
-    private static final ThreadLocal<Long> context = ThreadLocal.withInitial(() -> MemoryUtil.NULL);
+    public static final ComponentToken<AudioEngine> TOKEN = ComponentToken.create(AudioEngine::new);
 
-    private static final ThreadLocal<ALCapabilities> capabilities = new ThreadLocal<>();
+    private AudioEngine()
+    {
 
-    public static void initialize()
+    }
+
+    @Override
+    protected void onMount(ComponentDependencyManager manager)
     {
         var devicePtr = ALC10.alcOpenDevice((ByteBuffer) null);
         if (devicePtr == MemoryUtil.NULL)
@@ -35,7 +41,7 @@ public class AudioEngine
             return;
         }
 
-        device.set(devicePtr);
+        this.device = devicePtr;
 
         var contextPtr = ALC10.alcCreateContext(devicePtr, (IntBuffer) null);
         if (contextPtr == MemoryUtil.NULL)
@@ -48,7 +54,7 @@ public class AudioEngine
             return;
         }
 
-        context.set(contextPtr);
+        this.context = contextPtr;
 
         EXTThreadLocalContext.alcSetThreadContext(contextPtr);
 
@@ -61,25 +67,27 @@ public class AudioEngine
             Logger.logf(SmartSeverity.AUDIO, "OpenAL11: %b\n", alCapabilities.OpenAL11);
         }
 
-        capabilities.set(alCapabilities);
+        this.capabilities = alCapabilities;
+
+        Logger.log(SmartSeverity.AUDIO_PLUS, "Audio engine started.");
     }
 
-    public static void setSpeed(Vector3f speed)
+    public void setSpeed(Vector3f speed)
     {
         AL10.alListener3f(AL10.AL_VELOCITY, speed.x, speed.y, speed.z);
     }
 
-    public static void setPosition(Vector3f position)
+    public void setPosition(Vector3f position)
     {
         AL10.alListener3f(AL10.AL_POSITION, position.x, position.y, position.z);
     }
 
-    public static void setVolume(float volume)
+    public void setVolume(float volume)
     {
         AL10.alListenerf(AL10.AL_GAIN, volume);
     }
 
-    public static void setOrientation(Vector3f at, Vector3f up)
+    public void setOrientation(Vector3f at, Vector3f up)
     {
         float[] data = new float[6];
         data[0] = at.x;
@@ -91,18 +99,29 @@ public class AudioEngine
         AL10.alListenerfv(AL10.AL_ORIENTATION, data);
     }
 
-    public static boolean isReady()
+    public boolean isReady()
     {
-        return capabilities.get() != null;
+        return this.capabilities != null;
     }
 
-    public static void exit()
+    @Override
+    protected void onUnmount()
     {
-        EXTThreadLocalContext.alcSetThreadContext(MemoryUtil.NULL);
+        Logger.log(SmartSeverity.AUDIO_MINUS, "Shutting down the audio engine.");
-        ALC10.alcDestroyContext(context.get());
-        ALC10.alcCloseDevice(device.get());
 
-        context.remove();
+        EXTThreadLocalContext.alcSetThreadContext(MemoryUtil.NULL);
-        device.remove();
+
+        ALC10.alcDestroyContext(this.context);
+        ALC10.alcCloseDevice(this.device);
+
+        this.context = MemoryUtil.NULL;
+        this.device = MemoryUtil.NULL;
+        this.capabilities = null;
+    }
+
+    @Override
+    public boolean isUnique()
+    {
+        return true;
     }
 }

engine-core/plutoaudio/src/main/java/org/plutoengine/audio/al/AudioTrack.java

@@ -3,12 +3,11 @@ package org.plutoengine.audio.al;
 import org.lwjgl.openal.AL10;
 import org.lwjgl.openal.SOFTDirectChannels;
 import org.lwjgl.system.MemoryUtil;
+import org.plutoengine.audio.IAudioStream;
+import org.plutoengine.audio.ISeekableAudioTrack;
 
 import java.nio.ShortBuffer;
 
-import org.plutoengine.audio.ISeekableAudioTrack;
-import org.plutoengine.audio.IAudioStream;
-
 public class AudioTrack extends AudioSource
 {
     private static final int BUFFER_SIZE_PER_CHANNEL = 16384;
@@ -56,10 +55,8 @@ public class AudioTrack extends AudioSource
 
     public boolean play()
     {
-        if (this.track instanceof ISeekableAudioTrack)
+        if (this.track instanceof ISeekableAudioTrack seekableAudioTrack)
-        {
+            seekableAudioTrack.rewind();
-            ((ISeekableAudioTrack) this.track).rewind();
-        }
 
         for (int buf : this.buffers)
         {
@@ -82,9 +79,7 @@ public class AudioTrack extends AudioSource
         int samplesPerChannel = this.track.getSamples(this.pcm);
 
         if (samplesPerChannel == 0)
-        {
             return;
-        }
 
         var samples = samplesPerChannel * this.track.getChannels();
         this.pcm.limit(samples);

engine-core/plutocomponent/build.gradle.kts

@@ -6,8 +6,9 @@ plugins {
 description = "A module acting as glue for all PlutoEngine components."
 
 dependencies {
-    api("org.apache.commons:commons-lang3:3.12.0")
+    api("org.jetbrains", "annotations", "23.0.0")
-    api("org.apache.commons:commons-collections4:4.4")
+
+    implementation("org.apache.commons", "commons-lang3", "3.12.0")
+    implementation("org.apache.commons", "commons-collections4", "4.4")
 
-    api("com.google.code.findbugs:jsr305:3.0.2")
 }

engine-core/plutocomponent/src/main/java/org/plutoengine/component/AbstractComponent.java

@@ -1,33 +1,61 @@
 package org.plutoengine.component;
 
+import java.util.ArrayDeque;
+import java.util.Deque;
 import java.util.Objects;
 import java.util.concurrent.atomic.AtomicLong;
 
-public abstract class AbstractComponent implements IComponent
+public abstract class AbstractComponent<T extends AbstractComponent<? super T>>
 {
     private static final AtomicLong ID_SOURCE = new AtomicLong();
 
     private final long id;
 
+    private ComponentDependencyManager manager;
+
     protected AbstractComponent()
     {
         this.id = ID_SOURCE.getAndIncrement();
     }
 
-    @Override
     public long getID()
     {
         return this.id;
     }
 
-    @Override
+    /**
-    public void onMount() throws Exception
+     * Denotes whether this component should be unique.
+     * Unique components can only exist once per instance
+     * in a given {@link ComponentManager}.
+     *
+     * @return whether this component should be unique
+     */
+    public abstract boolean isUnique();
+
+    void initialize(ComponentManager<? super T> manager) throws Exception
+    {
+        this.manager = this.new ComponentDependencyManager(manager);
+
+        onMount(this.manager);
+    }
+
+    protected void onMount(ComponentDependencyManager manager) throws Exception
     {
 
     }
 
-    @Override
+    void destroy(ComponentManager<? super T> manager) throws Exception
-    public void onUnmount() throws Exception
+    {
+        if (this.manager.dependencies != null)
+        {
+            this.manager.dependencies.forEach(manager::removeComponent);
+            this.manager.dependencies.clear();
+        }
+
+        this.onUnmount();
+    }
+
+    protected void onUnmount() throws Exception
     {
 
     }
@@ -37,7 +65,7 @@ public abstract class AbstractComponent implements IComponent
     {
         if (this == o) return true;
         if (o == null || this.getClass() != o.getClass()) return false;
-        AbstractComponent that = (AbstractComponent) o;
+        AbstractComponent<?> that = (AbstractComponent<?>) o;
         return this.id == that.id;
     }
 
@@ -46,4 +74,27 @@ public abstract class AbstractComponent implements IComponent
     {
         return Objects.hash(this.id);
     }
+
+    public class ComponentDependencyManager
+    {
+        private final ComponentManager<? super T> manager;
+        private Deque<T> dependencies;
+
+        private ComponentDependencyManager(ComponentManager<? super T> componentManager)
+        {
+            this.manager = componentManager;
+        }
+
+        public <R extends T> R declareDependency(ComponentToken<R> token)
+        {
+            if (this.dependencies == null)
+                this.dependencies = new ArrayDeque<>();
+
+            var dependency = this.manager.addComponent(token);
+
+            this.dependencies.push(dependency);
+
+            return dependency;
+        }
+    }
 }

engine-core/plutocomponent/src/main/java/org/plutoengine/component/ComponentManager.java

@@ -4,21 +4,21 @@ import org.apache.commons.collections4.MultiValuedMap;
 import org.apache.commons.collections4.multimap.ArrayListValuedHashMap;
 import org.apache.commons.collections4.multimap.HashSetValuedHashMap;
 import org.apache.commons.lang3.ClassUtils;
+import org.jetbrains.annotations.NotNull;
 
-import javax.annotation.Nonnull;
 import java.util.*;
 import java.util.stream.Stream;
 
-public class ComponentManager<R extends AbstractComponent>
+public class ComponentManager<R extends AbstractComponent<R>>
 {
     private final Class<R> base;
 
-    protected final MultiValuedMap<ComponentToken<? extends R>, R> components;
+    protected final MultiValuedMap<ComponentToken<?>, R> components;
-    protected final Map<R, ComponentToken<? extends R>> tokens;
+    protected final Map<R, ComponentToken<?>> tokens;
     protected final MultiValuedMap<Class<?>, R> implementationProviders;
     protected final MultiValuedMap<R, Class<?>> implementationReceivers;
 
-    public ComponentManager(@Nonnull Class<R> base)
+    public ComponentManager(@NotNull Class<R> base)
     {
         this.base = base;
         this.components = new HashSetValuedHashMap<>();
@@ -27,7 +27,7 @@ public class ComponentManager<R extends AbstractComponent>
         this.implementationReceivers = new ArrayListValuedHashMap<>();
     }
 
-    public <T extends R> T addComponent(@Nonnull ComponentToken<T> token)
+    public <T extends R> T addComponent(@NotNull ComponentToken<T> token)
     {
         T component = token.createInstance();
         var clazz = component.getClass();
@@ -52,7 +52,7 @@ public class ComponentManager<R extends AbstractComponent>
 
         try
         {
-            component.onMount();
+            component.initialize(this);
         }
         catch (Exception e)
         {
@@ -67,33 +67,33 @@ public class ComponentManager<R extends AbstractComponent>
         return this.base;
     }
 
-    public <T extends R> Stream<T> streamComponents(@Nonnull Class<T> componentClazz)
+    public <T extends R> Stream<T> streamComponents(@NotNull Class<T> componentClazz)
     {
         var providers = this.implementationProviders.get(componentClazz);
 
         return providers.stream().map(componentClazz::cast);
     }
 
-    public <T extends R> T getComponent(@Nonnull Class<T> componentClazz) throws NoSuchElementException
+    public <T extends R> T getComponent(@NotNull Class<T> componentClazz) throws NoSuchElementException
     {
         return this.streamComponents(componentClazz)
             .findAny()
             .orElseThrow();
     }
 
-    public <T extends R> T getComponent(@Nonnull Class<T> componentClazz, @Nonnull Comparator<T> heuristic) throws NoSuchElementException
+    public <T extends R> T getComponent(@NotNull Class<T> componentClazz, @NotNull Comparator<T> heuristic) throws NoSuchElementException
     {
         return this.streamComponents(componentClazz)
             .max(heuristic)
             .orElseThrow();
     }
 
-    public <T extends R> List<T> getComponents(@Nonnull Class<T> componentClazz)
+    public <T extends R> List<T> getComponents(@NotNull Class<T> componentClazz)
     {
         return this.streamComponents(componentClazz).toList();
     }
 
-    public void removeComponent(@Nonnull R component) throws IllegalArgumentException
+    public void removeComponent(@NotNull R component) throws IllegalArgumentException
     {
         var token = this.tokens.remove(component);
 
@@ -108,7 +108,7 @@ public class ComponentManager<R extends AbstractComponent>
 
         try
         {
-            component.onUnmount();
+            component.destroy(this);
         }
         catch (Exception e)
         {
@@ -116,7 +116,7 @@ public class ComponentManager<R extends AbstractComponent>
         }
     }
 
-    public <T extends R> void removeComponents(@Nonnull ComponentToken<T> componentToken)
+    public <T extends R> void removeComponents(@NotNull ComponentToken<T> componentToken)
     {
         var activeComponents = this.components.remove(componentToken);
 

engine-core/plutocomponent/src/main/java/org/plutoengine/component/ComponentToken.java

@@ -1,11 +1,12 @@
 package org.plutoengine.component;
 
-import javax.annotation.Nonnull;
+import org.jetbrains.annotations.NotNull;
+
 import java.util.Objects;
 import java.util.concurrent.atomic.AtomicLong;
 import java.util.function.Supplier;
 
-public final class ComponentToken<T extends IComponent>
+public final class ComponentToken<T extends AbstractComponent<? super T>>
 {
     private static final AtomicLong ID_SOURCE = new AtomicLong();
 
@@ -18,7 +19,7 @@ public final class ComponentToken<T extends IComponent>
         this.supplier = valueSupplier;
     }
 
-    public static <T extends IComponent> ComponentToken<T> create(@Nonnull Supplier<T> valueSupplier)
+    public static <G extends AbstractComponent<? super G>> ComponentToken<G> create(@NotNull Supplier<G> valueSupplier)
     {
         return new ComponentToken<>(valueSupplier);
     }

engine-core/plutocomponent/src/main/java/org/plutoengine/component/IComponent.java

@@ -1,22 +0,0 @@
-package org.plutoengine.component;
-
-public interface IComponent
-{
-    /**
-     * Denotes whether this component should be unique.
-     * Unique components can only exist once per instance
-     * in a given {@link ComponentManager}.
-     *
-     * @return whether this component should be unique
-     *
-     * @author 493msi
-     * @since 20.2.0.0-alpha.3
-     */
-    boolean isUnique();
-
-    long getID();
-
-    void onMount() throws Exception;
-
-    void onUnmount() throws Exception;
-}

engine-core/plutocore/src/main/java/org/plutoengine/PlutoApplication.java

@@ -243,9 +243,8 @@ public abstract class PlutoApplication
 
         this.display.createOpenGLCapabilities();
 
-        components.addComponent(InputBus.TOKEN);
+        var inputBus = components.addComponent(InputBus.fromDisplay(this.display));
-
+        var audioEngine = components.addComponent(AudioEngine.TOKEN);
-        AudioEngine.initialize();
 
         var modLoader = components.addComponent(ModLoader.TOKEN);
 
@@ -259,7 +258,6 @@ public abstract class PlutoApplication
             this.display.setIcons(icons);
         }
 
-
         while (!this.display.isClosing())
         {
             GL33.glViewport(0, 0, this.display.getWidth(), this.display.getHeight());
@@ -270,20 +268,19 @@ public abstract class PlutoApplication
 
             this.display.swapBuffers();
 
-            InputBus.resetStates();
+            inputBus.resetStates();
 
             this.display.pollEvents();
         }
 
-        AudioEngine.exit();
+        components.removeComponent(audioEngine);
 
         modLoader.unload();
 
         GL.destroy();
 
         components.removeComponent(modLoader);
-
+        components.removeComponent(inputBus);
-        components.removeComponents(InputBus.TOKEN);
 
         this.display.destroy();
 

engine-core/plutocore/src/main/java/org/plutoengine/input/InputBus.java

@@ -1,100 +1,37 @@
 package org.plutoengine.input;
 
-import org.lwjgl.glfw.GLFW;
-
-import org.plutoengine.PlutoLocal;
-import org.plutoengine.address.ThreadSensitive;
 import org.plutoengine.component.ComponentToken;
 import org.plutoengine.component.PlutoLocalComponent;
 import org.plutoengine.display.Display;
 
-@ThreadSensitive(localContexts = true)
 public class InputBus extends PlutoLocalComponent
 {
-    public static final ComponentToken<InputBus> TOKEN = ComponentToken.create(InputBus::new);
+    public static ComponentToken<InputBus> fromDisplay(Display display)
-
-    private final KeyboardInputCallback keyboard = new KeyboardInputCallback();
-    private final MouseButtonCallback mouseButton = new MouseButtonCallback();
-    private final CursorPositionCallback cursorPosition = new CursorPositionCallback();
-    private final ScrollInputCallback scroll = new ScrollInputCallback();
-    private final KeyboardCharInput charInput = new KeyboardCharInput();
-
-    private long windowPointer;
-
-    private InputBus()
     {
-
+        return ComponentToken.create(() -> new InputBus(display));
     }
 
-    private static InputBus instance()
+    private final Display display;
+
+    private Keyboard keyboard;
+    private Mouse mouse;
+
+    private InputBus(Display display)
     {
-        return PlutoLocal.components().getComponent(InputBus.class);
+        this.display = display;
     }
 
     @Override
-    public void onMount()
+    protected void onMount(ComponentDependencyManager manager)
     {
-        var display = PlutoLocal.components().getComponent(Display.class);
+        this.keyboard = manager.declareDependency(ComponentToken.create(() -> new Keyboard(this.display.getWindowPointer())));
-        this.windowPointer = display.getWindowPointer();
+        this.mouse = manager.declareDependency(ComponentToken.create(() -> new Mouse(this.display.getWindowPointer())));
-
-        GLFW.glfwSetKeyCallback(this.windowPointer, this.keyboard);
-        GLFW.glfwSetMouseButtonCallback(this.windowPointer, this.mouseButton);
-        GLFW.glfwSetCursorPosCallback(this.windowPointer, this.cursorPosition);
-        GLFW.glfwSetScrollCallback(this.windowPointer, this.scroll);
-        GLFW.glfwSetCharCallback(this.windowPointer, this.charInput);
     }
 
-
+    public void resetStates()
-    @Override
-    public void onUnmount()
     {
-        GLFW.glfwSetKeyCallback(this.windowPointer, null);
+        this.keyboard.resetStates();
-        GLFW.glfwSetMouseButtonCallback(this.windowPointer, null);
+        this.mouse.resetStates();
-        GLFW.glfwSetCursorPosCallback(this.windowPointer, null);
-        GLFW.glfwSetScrollCallback(this.windowPointer, null);
-        GLFW.glfwSetCharCallback(this.windowPointer, null);
-
-        this.scroll.free();
-        this.mouseButton.free();
-        this.keyboard.free();
-        this.cursorPosition.free();
-        this.charInput.free();
-    }
-
-    public static KeyboardInputCallback keyboard()
-    {
-        return instance().keyboard;
-    }
-
-    public static MouseButtonCallback mouseButtons()
-    {
-        return instance().mouseButton;
-    }
-
-    public static ScrollInputCallback scroll()
-    {
-        return instance().scroll;
-    }
-
-    public static CursorPositionCallback cursorPosition()
-    {
-        return instance().cursorPosition;
-    }
-
-    public static KeyboardCharInput charInput()
-    {
-        return instance().charInput;
-    }
-
-    public static void resetStates()
-    {
-        var instance = instance();
-
-        instance.keyboard.resetPressed();
-        instance.mouseButton.reset();
-        instance.scroll.reset();
-        instance.cursorPosition.reset();
-        instance.charInput.reset();
     }
 
     @Override
@@ -103,81 +40,4 @@ public class InputBus extends PlutoLocalComponent
         return true;
     }
 
-    @ThreadSensitive(localContexts = true)
-    public static class Mouse
-    {
-        public static boolean clicked(int button)
-        {
-            return instance().mouseButton.buttonClicked[button];
-        }
-
-        public static boolean released(int button)
-        {
-            return instance().mouseButton.buttonReleased[button];
-        }
-
-        public static boolean isButtonDown(int button)
-        {
-            return instance().mouseButton.buttonDown[button];
-        }
-
-        public static double getX()
-        {
-            return instance().cursorPosition.getX();
-        }
-
-        public static double getY()
-        {
-            return instance().cursorPosition.getY();
-        }
-
-        public static boolean isInside(int x1, int y1, int x2, int y2)
-        {
-            return instance().cursorPosition.isInside(x1, y1, x2, y2);
-        }
-
-        public static double getDX()
-        {
-            return instance().cursorPosition.getDeltaX();
-        }
-
-        public static double getDY()
-        {
-            return instance().cursorPosition.getDeltaY();
-        }
-
-        public static double getScrollX()
-        {
-            return instance().scroll.getXScroll();
-        }
-
-        public static double getScrollY()
-        {
-            return instance().scroll.getYScroll();
-        }
-    }
-
-    @ThreadSensitive(localContexts = true)
-    public static class Keyboard
-    {
-        public static boolean pressed(int key)
-        {
-            return instance().keyboard.hasBeenPressed(key);
-        }
-
-        public static boolean released(int key)
-        {
-            return instance().keyboard.hasBeenReleased(key);
-        }
-
-        public static boolean isKeyDown(int key)
-        {
-            return instance().keyboard.isKeyDown(key);
-        }
-
-        public static String getTypedText()
-        {
-            return instance().charInput.getTypedText();
-        }
-    }
 }

engine-core/plutocore/src/main/java/org/plutoengine/input/Keyboard.java

@@ -0,0 +1,78 @@
+package org.plutoengine.input;
+
+import org.lwjgl.glfw.GLFW;
+import org.plutoengine.component.PlutoLocalComponent;
+import org.plutoengine.input.callback.KeyboardCharInput;
+import org.plutoengine.input.callback.KeyboardInputCallback;
+
+public class Keyboard extends PlutoLocalComponent
+{
+    private final KeyboardInputCallback keyboard = new KeyboardInputCallback();
+    private final KeyboardCharInput charInput = new KeyboardCharInput();
+
+    private final long windowPointer;
+
+    Keyboard(long windowPointer)
+    {
+        this.windowPointer = windowPointer;
+    }
+
+    public KeyboardInputCallback keyboard()
+    {
+        return this.keyboard;
+    }
+
+    public KeyboardCharInput charInput()
+    {
+        return this.charInput;
+    }
+
+    void resetStates()
+    {
+        this.keyboard.resetPressed();
+        this.charInput.reset();
+    }
+
+    @Override
+    protected void onMount(ComponentDependencyManager manager)
+    {
+        GLFW.glfwSetKeyCallback(this.windowPointer, this.keyboard);
+        GLFW.glfwSetCharCallback(this.windowPointer, this.charInput);
+    }
+
+    @Override
+    protected void onUnmount() throws Exception
+    {
+        GLFW.glfwSetKeyCallback(this.windowPointer, null);
+        GLFW.glfwSetCharCallback(this.windowPointer, null);
+
+        this.keyboard.free();
+        this.charInput.free();
+    }
+
+    public boolean pressed(int key)
+    {
+        return this.keyboard.hasBeenPressed(key);
+    }
+
+    public boolean released(int key)
+    {
+        return this.keyboard.hasBeenReleased(key);
+    }
+
+    public boolean isKeyDown(int key)
+    {
+        return this.keyboard.isKeyDown(key);
+    }
+
+    public String getTypedText()
+    {
+        return this.charInput.getTypedText();
+    }
+
+    @Override
+    public boolean isUnique()
+    {
+        return false;
+    }
+}

engine-core/plutocore/src/main/java/org/plutoengine/input/Mouse.java

@@ -0,0 +1,119 @@
+package org.plutoengine.input;
+
+import org.lwjgl.glfw.GLFW;
+import org.plutoengine.component.PlutoLocalComponent;
+import org.plutoengine.input.callback.CursorPositionCallback;
+import org.plutoengine.input.callback.MouseButtonCallback;
+import org.plutoengine.input.callback.ScrollInputCallback;
+
+public class Mouse extends PlutoLocalComponent
+{
+    private final MouseButtonCallback mouseButton = new MouseButtonCallback();
+    private final CursorPositionCallback cursorPosition = new CursorPositionCallback();
+    private final ScrollInputCallback scroll = new ScrollInputCallback();
+
+    private final long windowPointer;
+
+    Mouse(long windowPointer)
+    {
+        this.windowPointer = windowPointer;
+    }
+
+    public MouseButtonCallback mouseButtons()
+    {
+        return this.mouseButton;
+    }
+
+    public ScrollInputCallback scroll()
+    {
+        return this.scroll;
+    }
+
+    public CursorPositionCallback cursorPosition()
+    {
+        return this.cursorPosition;
+    }
+
+    void resetStates()
+    {
+        this.mouseButton.reset();
+        this.scroll.reset();
+        this.cursorPosition.reset();
+    }
+
+    @Override
+    protected void onMount(ComponentDependencyManager manager)
+    {
+        GLFW.glfwSetMouseButtonCallback(this.windowPointer, this.mouseButton);
+        GLFW.glfwSetCursorPosCallback(this.windowPointer, this.cursorPosition);
+        GLFW.glfwSetScrollCallback(this.windowPointer, this.scroll);
+    }
+
+    @Override
+    protected void onUnmount() throws Exception
+    {
+        GLFW.glfwSetMouseButtonCallback(this.windowPointer, null);
+        GLFW.glfwSetCursorPosCallback(this.windowPointer, null);
+        GLFW.glfwSetScrollCallback(this.windowPointer, null);
+
+        this.mouseButton.free();
+        this.cursorPosition.free();
+        this.scroll.free();
+    }
+
+    public boolean clicked(int button)
+    {
+        return this.mouseButton.buttonClicked[button];
+    }
+
+    public boolean released(int button)
+    {
+        return this.mouseButton.buttonReleased[button];
+    }
+
+    public boolean isButtonDown(int button)
+    {
+        return this.mouseButton.buttonDown[button];
+    }
+
+    public double getX()
+    {
+        return this.cursorPosition.getX();
+    }
+
+    public double getY()
+    {
+        return this.cursorPosition.getY();
+    }
+
+    public boolean isInside(int x1, int y1, int x2, int y2)
+    {
+        return this.cursorPosition.isInside(x1, y1, x2, y2);
+    }
+
+    public double getDX()
+    {
+        return this.cursorPosition.getDeltaX();
+    }
+
+    public double getDY()
+    {
+        return this.cursorPosition.getDeltaY();
+    }
+
+    public double getScrollX()
+    {
+        return this.scroll.getXScroll();
+    }
+
+    public double getScrollY()
+    {
+        return this.scroll.getYScroll();
+    }
+
+    @Override
+    public boolean isUnique()
+    {
+        return false;
+    }
+}

engine-core/plutocore/src/main/java/org/plutoengine/input/callback/CursorPositionCallback.java

@@ -1,4 +1,4 @@
-package org.plutoengine.input;
+package org.plutoengine.input.callback;
 
 import org.lwjgl.glfw.GLFWCursorPosCallback;
 

engine-core/plutocore/src/main/java/org/plutoengine/input/callback/KeyboardCharInput.java

@@ -1,4 +1,4 @@
-package org.plutoengine.input;
+package org.plutoengine.input.callback;
 
 import org.lwjgl.glfw.GLFWCharCallback;
 

engine-core/plutocore/src/main/java/org/plutoengine/input/callback/KeyboardInputCallback.java

@@ -1,4 +1,4 @@
-package org.plutoengine.input;
+package org.plutoengine.input.callback;
 
 import org.lwjgl.glfw.GLFWKeyCallback;
 

engine-core/plutocore/src/main/java/org/plutoengine/input/callback/MouseButtonCallback.java

@@ -1,4 +1,4 @@
-package org.plutoengine.input;
+package org.plutoengine.input.callback;
 
 import org.lwjgl.glfw.GLFW;
 import org.lwjgl.glfw.GLFWMouseButtonCallback;

engine-core/plutocore/src/main/java/org/plutoengine/input/callback/ScrollInputCallback.java

@@ -1,4 +1,4 @@
-package org.plutoengine.input;
+package org.plutoengine.input.callback;
 
 import org.lwjgl.glfw.GLFWScrollCallback;
 

engine-core/plutodisplay/src/main/java/org/plutoengine/display/Display.java

@@ -5,7 +5,7 @@ import org.lwjgl.opengl.*;
 import org.lwjgl.system.MemoryUtil;
 
 import org.plutoengine.Pluto;
-import org.plutoengine.address.ThreadSensitive;
+import org.plutoengine.annotation.ThreadSensitive;
 import org.plutoengine.component.PlutoLocalComponent;
 import org.plutoengine.gl.GLDebugInfo;
 import org.plutoengine.logger.Logger;

engine-core/plutoruntime/src/main/java/org/plutoengine/PlutoLocal.java

@@ -1,6 +1,6 @@
 package org.plutoengine;
 
-import org.plutoengine.address.ThreadSensitive;
+import org.plutoengine.annotation.ThreadSensitive;
 import org.plutoengine.component.PlutoLocalComponent;
 import org.plutoengine.component.ComponentManager;
 

engine-core/plutoruntime/src/main/java/org/plutoengine/PlutoVersion.java

@@ -1,8 +1,7 @@
 package org.plutoengine;
 
-import org.plutoengine.address.ConstantExpression;
+import org.jetbrains.annotations.NotNull;
 
-import javax.annotation.Nonnull;
 import java.util.Objects;
 
 public final class PlutoVersion implements IVersion<PlutoVersion>
@@ -75,12 +74,11 @@ public final class PlutoVersion implements IVersion<PlutoVersion>
         return this.prereleaseNumber;
     }
 
-    @ConstantExpression
+    public static PlutoVersion of(@NotNull String str)
-    public static PlutoVersion of(@Nonnull String str)
     {
         assert !str.isBlank();
 
-        assert str.matches("[0-9]+\\.[0-9]+\\.[0-9]+\\.[0-9]+([+\\-][a-zA-Z0-9]+(\\.[0-9]+)?)?");
+        assert str.matches("\\d+\\.\\d+\\.\\d+\\.\\d+([+\\-][a-zA-Z\\d]+(\\.\\d+)?)?");
 
         var parts = str.split("[+\\-]");
 
@@ -141,7 +139,7 @@ public final class PlutoVersion implements IVersion<PlutoVersion>
     }
 
     @Override
-    public int compareTo(@Nonnull PlutoVersion o)
+    public int compareTo(@NotNull PlutoVersion o)
     {
         int yearDiff = this.year - o.year;
         if (yearDiff != 0)

engine-core/plutoruntime/src/main/java/org/plutoengine/address/ConstantExpression.java

@@ -1,22 +0,0 @@
-package org.plutoengine.address;
-
-import javax.annotation.meta.TypeQualifier;
-import java.lang.annotation.*;
-
-/**
- * Denotes that the target field or method should be a constant expression - it is final, has no state
- * and always yields the same deterministic result for given input. Generally, annotated methods
- * should be thread-safe, however this is not required.
- *
- * @author 493msi
- *
- * @since 20.2.0.0-alpha.3
- * */
-@TypeQualifier
-@Documented
-@Retention(RetentionPolicy.CLASS)
-@Target({ ElementType.METHOD, ElementType.FIELD })
-public @interface ConstantExpression
-{
-
-}

engine-core/plutoruntime/src/main/java/org/plutoengine/annotation/ThreadSensitive.java

@@ -1,9 +1,6 @@
-package org.plutoengine.address;
+package org.plutoengine.annotation;
 
-import java.lang.annotation.ElementType;
+import java.lang.annotation.*;
-import java.lang.annotation.Retention;
-import java.lang.annotation.RetentionPolicy;
-import java.lang.annotation.Target;
 
 /**
  * <p>
@@ -22,6 +19,7 @@ import java.lang.annotation.Target;
  */
 @Target(ElementType.TYPE)
 @Retention(RetentionPolicy.SOURCE)
+@Inherited
 public @interface ThreadSensitive
 {
     /**

engine-core/plutoruntime/src/main/java/org/plutoengine/component/PlutoGlobalComponent.java

@@ -1,5 +1,5 @@
 package org.plutoengine.component;
 
-public abstract class PlutoGlobalComponent extends AbstractComponent
+public abstract class PlutoGlobalComponent extends AbstractComponent<PlutoGlobalComponent>
 {
 }

engine-core/plutoruntime/src/main/java/org/plutoengine/component/PlutoLocalComponent.java

@@ -1,6 +1,9 @@
 package org.plutoengine.component;
 
-public abstract class PlutoLocalComponent extends AbstractComponent
+import org.plutoengine.annotation.ThreadSensitive;
+
+@ThreadSensitive(localContexts = true)
+public abstract class PlutoLocalComponent extends AbstractComponent<PlutoLocalComponent>
 {
 
 }

engine-core/plutoruntime/src/main/java/org/plutoengine/logger/Logger.java

@@ -1,14 +1,14 @@
 package org.plutoengine.logger;
 
+import org.plutoengine.component.ComponentToken;
+import org.plutoengine.component.PlutoGlobalComponent;
+import org.plutoengine.resource.filesystem.ResourceManager;
+
 import java.io.OutputStream;
 import java.io.PrintStream;
 import java.nio.file.Files;
 import java.time.LocalDateTime;
 
-import org.plutoengine.component.ComponentToken;
-import org.plutoengine.component.PlutoGlobalComponent;
-import org.plutoengine.resource.filesystem.ResourceManager;
-
 /**
  * <p>
  * A simple static logger writing to both standard output and a log file.
@@ -48,7 +48,7 @@ public class Logger extends PlutoGlobalComponent
      * @since pre-alpha
      * */
     @Override
-    public void onMount() throws Exception
+    protected void onMount(ComponentDependencyManager manager) throws Exception
     {
         this.onUnmount();
 
@@ -93,7 +93,7 @@ public class Logger extends PlutoGlobalComponent
      * @since pre-alpha
      * */
     @Override
-    public void onUnmount() throws Exception
+    protected void onUnmount() throws Exception
     {
         if (fileLog != null)
             fileLog.close();

engine-core/plutoruntime/src/main/java/org/plutoengine/logger/OutputSplitStream.java

@@ -1,6 +1,7 @@
 package org.plutoengine.logger;
 
-import javax.annotation.Nonnull;
+import org.jetbrains.annotations.NotNull;
+
 import java.io.IOException;
 import java.io.OutputStream;
 
@@ -37,14 +38,14 @@ public class OutputSplitStream extends OutputStream
     }
 
     @Override
-    public void write(@Nonnull byte[] b) throws IOException
+    public void write(byte @NotNull [] b) throws IOException
     {
         this.outputStreamA.write(b);
         this.outputStreamB.write(b);
     }
 
     @Override
-    public void write(@Nonnull byte[] b, int off, int len) throws IOException
+    public void write(byte @NotNull [] b, int off, int len) throws IOException
     {
         this.outputStreamA.write(b, off, len);
         this.outputStreamB.write(b, off, len);

engine-core/plutoruntime/src/main/java/org/plutoengine/resource/filesystem/ResourceManager.java

@@ -3,19 +3,15 @@ package org.plutoengine.resource.filesystem;
 import org.plutoengine.address.VirtualAddress;
 import org.plutoengine.mod.Mod;
 
-import javax.annotation.concurrent.ThreadSafe;
 import java.io.Closeable;
 import java.io.IOException;
-import java.nio.file.FileSystems;
 import java.nio.file.Path;
 import java.nio.file.ProviderNotFoundException;
 import java.nio.file.spi.FileSystemProvider;
 import java.util.HashMap;
 import java.util.Map;
 import java.util.ServiceConfigurationError;
-import java.util.ServiceLoader;
 
-@ThreadSafe
 public class ResourceManager implements Closeable
 {
     public static final Path GLOBAL_ROOT = Path.of("");

engine-core/plutoruntime/src/main/java/org/plutoengine/tpl/ImageLoader.java

@@ -1,18 +1,20 @@
 package org.plutoengine.tpl;
 
-import javax.annotation.Nullable;
+import org.jetbrains.annotations.Nullable;
-import javax.imageio.ImageIO;
-import java.awt.*;
-import java.awt.image.*;
-import java.nio.ByteBuffer;
-import java.nio.ByteOrder;
-import java.nio.file.Files;
-import java.nio.file.Path;
-
 import org.lwjgl.BufferUtils;
 import org.plutoengine.logger.Logger;
 import org.plutoengine.logger.SmartSeverity;
 
+import javax.imageio.ImageIO;
+import java.awt.*;
+import java.awt.image.BufferedImage;
+import java.awt.image.DataBuffer;
+import java.awt.image.DataBufferByte;
+import java.awt.image.Raster;
+import java.nio.ByteBuffer;
+import java.nio.file.Files;
+import java.nio.file.Path;
+
 /**
  * Quick ABGR (8-bit per channel, 32 bits per pixel) and grayscale image loader for OpenGL textures.
  * Color component swizzling may be needed.

engine-demo/basic-application/src/main/java/org/plutoengine/demo/Main.java

@@ -12,7 +12,7 @@ import org.plutoengine.graphics.ImmediateFontRenderer;
 import org.plutoengine.graphics.PlutoGUIMod;
 import org.plutoengine.graphics.RectangleRenderer2D;
 import org.plutoengine.graphics.gui.FontShader;
-import org.plutoengine.input.InputBus;
+import org.plutoengine.input.Keyboard;
 import org.plutoengine.libra.paint.LiGradientPaint;
 import org.plutoengine.libra.paint.LiPaint;
 import org.plutoengine.libra.text.shaping.TextStyleOptions;
@@ -92,7 +92,7 @@ public class Main extends PlutoApplication
         welcomeStyle.setPaint(LiPaint.horizontaLinearGradient(stops));
         ImmediateFontRenderer.drawString(0, 100, "Welcome to PlutoEngine v. %s!".formatted(Pluto.VERSION), BasicApplicationDemoMod.font, welcomeStyle);
 
-        if (InputBus.Keyboard.pressed(GLFW.GLFW_KEY_R))
+        if (PlutoLocal.components().getComponent(Keyboard.class).pressed(GLFW.GLFW_KEY_R))
         {
             var shader = PlutoGUIMod.fontShader;