fixes

src/main/java/dev/zprestige/prestige/inject/hooks/KeyboardHooks.java

@@ -0,0 +1,24 @@
+package dev.zprestige.prestige.inject.hooks;
+
+import dev.zprestige.prestige.ui.mc.Overlay;
+import net.lenni0451.classtransform.InjectionCallback;
+import net.lenni0451.classtransform.annotations.CTarget;
+import net.lenni0451.classtransform.annotations.CTransformer;
+import net.lenni0451.classtransform.annotations.injection.CInject;
+import net.minecraft.client.Keyboard;
+import net.minecraft.client.input.CharInput;
+import net.minecraft.client.input.KeyInput;
+
+/** Injection-mode twin of ui.mixin.KeyboardHandlerMixin: swallows keyboard input while the overlay is visible. */
+@CTransformer({Keyboard.class})
+public class KeyboardHooks {
+    @CInject(method = {"onKey"}, target = {@CTarget("HEAD")}, cancellable = true)
+    private void key(long window, int action, KeyInput ev, InjectionCallback ci) {
+        if (Overlay.onKey(ev.key(), action)) ci.cancel();
+    }
+
+    @CInject(method = {"onChar"}, target = {@CTarget("HEAD")}, cancellable = true)
+    private void character(long window, CharInput ev, InjectionCallback ci) {
+        if (Overlay.onChar(ev.codepoint())) ci.cancel();
+    }
+}

src/main/java/dev/zprestige/prestige/inject/hooks/MouseHooks.java

@@ -0,0 +1,28 @@
+package dev.zprestige.prestige.inject.hooks;
+
+import dev.zprestige.prestige.ui.mc.Overlay;
+import net.lenni0451.classtransform.InjectionCallback;
+import net.lenni0451.classtransform.annotations.CTarget;
+import net.lenni0451.classtransform.annotations.CTransformer;
+import net.lenni0451.classtransform.annotations.injection.CInject;
+import net.minecraft.client.Mouse;
+import net.minecraft.client.input.MouseInput;
+
+/** Injection-mode twin of ui.mixin.MouseHandlerMixin: swallows mouse input while the overlay is visible. */
+@CTransformer({Mouse.class})
+public class MouseHooks {
+    @CInject(method = {"onMouseButton"}, target = {@CTarget("HEAD")}, cancellable = true)
+    private void button(long window, MouseInput info, int action, InjectionCallback ci) {
+        if (Overlay.onMouseButton(info.button(), action)) ci.cancel();
+    }
+
+    @CInject(method = {"onMouseScroll"}, target = {@CTarget("HEAD")}, cancellable = true)
+    private void scroll(long window, double x, double y, InjectionCallback ci) {
+        if (Overlay.onScroll(y)) ci.cancel();
+    }
+
+    @CInject(method = {"onCursorPos"}, target = {@CTarget("HEAD")}, cancellable = true)
+    private void move(long window, double x, double y, InjectionCallback ci) {
+        if (Overlay.onMouseMove()) ci.cancel();
+    }
+}

src/main/java/dev/zprestige/prestige/inject/hooks/RenderSystemHooks.java

@@ -0,0 +1,16 @@
+package dev.zprestige.prestige.inject.hooks;
+
+import dev.zprestige.prestige.ui.mc.Overlay;
+import net.lenni0451.classtransform.InjectionCallback;
+import net.lenni0451.classtransform.annotations.CTarget;
+import net.lenni0451.classtransform.annotations.CTransformer;
+import net.lenni0451.classtransform.annotations.injection.CInject;
+
+/** Injection-mode twin of ui.mixin.RenderSystemMixin: draws the overlay at the head of RenderSystem.flipFrame (Mojang-named, never remapped). */
+@CTransformer(name = "com.mojang.blaze3d.systems.RenderSystem")
+public class RenderSystemHooks {
+    @CInject(method = {"flipFrame"}, target = {@CTarget("HEAD")})
+    private static void overlay(InjectionCallback ci) {
+        Overlay.render();
+    }
+}