in-game input and start of keybind system

src/main/java/dev/isxander/controlify/ingame/ControllerPlayerMovement.java

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+package dev.isxander.controlify.ingame;
+
+import dev.isxander.controlify.controller.Controller;
+import net.minecraft.client.player.Input;
+
+public class ControllerPlayerMovement extends Input {
+    private final Controller controller;
+
+    public ControllerPlayerMovement(Controller controller) {
+        this.controller = controller;
+    }
+
+    @Override
+    public void tick(boolean slowDown, float f) {
+        var axes = controller.state().axes();
+
+        this.up = axes.leftStickY() < 0;
+        this.down = axes.leftStickY() > 0;
+        this.left = axes.leftStickX() < 0;
+        this.right = axes.leftStickX() > 0;
+        this.leftImpulse = -axes.leftStickX();
+        this.forwardImpulse = -axes.leftStickY();
+
+        if (slowDown) {
+            this.leftImpulse *= f;
+            this.forwardImpulse *= f;
+        }
+
+        var bindings = controller.bindings();
+
+        this.jumping = bindings.JUMP.held();
+        if (bindings.SNEAK.justPressed()) {
+            this.shiftKeyDown = !this.shiftKeyDown;
+        }
+    }
+}

src/main/java/dev/isxander/controlify/ingame/InGameInputHandler.java

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+package dev.isxander.controlify.ingame;
+
+import com.mojang.blaze3d.Blaze3D;
+import dev.isxander.controlify.InputMode;
+import dev.isxander.controlify.controller.Controller;
+import dev.isxander.controlify.event.ControlifyEvents;
+import net.minecraft.client.Minecraft;
+import net.minecraft.client.player.KeyboardInput;
+
+public class InGameInputHandler {
+    private final Controller controller;
+    private final Minecraft minecraft;
+
+    private double accumulatedDX, accumulatedDY;
+    private double deltaTime;
+
+    public InGameInputHandler(Controller controller) {
+        this.controller = controller;
+        this.minecraft = Minecraft.getInstance();
+
+        ControlifyEvents.INPUT_MODE_CHANGED.register(mode -> {
+            if (minecraft.player != null) {
+                minecraft.player.input = mode == InputMode.CONTROLLER
+                        ? new ControllerPlayerMovement(controller)
+                        : new KeyboardInput(minecraft.options);
+            }
+        });
+    }
+
+    public void inputTick() {
+        var axes = controller.state().axes();
+        if (minecraft.mouseHandler.isMouseGrabbed() && minecraft.isWindowActive()) {
+            accumulatedDX += axes.rightStickX();
+            accumulatedDY += axes.rightStickY();
+        }
+
+        processPlayerLook();
+    }
+
+    public void processPlayerLook() {
+        var time = Blaze3D.getTime();
+        var delta = time - deltaTime;
+        deltaTime = time;
+
+        var sensitivity = 1f * 8f + 2f;
+        var sensCubed = sensitivity * sensitivity * sensitivity;
+
+        var dx = accumulatedDX * delta;
+        var dy = accumulatedDY * delta;
+        accumulatedDX -= dx * 20; // 20 is how quickly the camera will slow down
+        accumulatedDY -= dy * 20;
+
+        if (minecraft.player != null)
+            minecraft.player.turn(dx * sensCubed, dy * sensCubed);
+    }
+}