better night vision

src/main/java/club/sk1er/patcher/config/PatcherConfig.java

@@ -162,6 +162,20 @@ public class PatcherConfig extends Config {
     )
     public static boolean smartFullbright = true;
 
+    @Switch(
+        name = "Disable Night Vision",
+        description = "Completely disables the effects of night vision.",
+        category = "Miscellaneous", subcategory = "Overlays"
+    )
+    public static boolean disableNightVision = false;
+
+    @Switch(
+        name = "Cleaner Night Vision",
+        description = "Makes the night vision effect fade out instead of a flashing effect.",
+        category = "Miscellaneous", subcategory = "Overlays"
+    )
+    public static boolean cleanerNightVision = false;
+
     @Switch(
         name = "Nausea Effect",
         description = "Remove the nether portal effect appearing when clearing nausea.",
@@ -1417,6 +1431,7 @@ public PatcherConfig() {
 
         try {
             addDependency("smartFullbright", "fullbright");
+            addDependency("cleanerNightVision", "disableNightVision", () -> !disableNightVision);
             addDependency("unfocusedFPSAmount", "unfocusedFPS");
             addDependency("instantFullscreen", "windowedFullscreen");
             addDependency("consecutiveCompactChat", "compactChat");

src/main/java/club/sk1er/patcher/mixins/features/EntityRendererMixin_NightVisionEffect.java

@@ -0,0 +1,22 @@
+package club.sk1er.patcher.mixins.features;
+
+import club.sk1er.patcher.config.PatcherConfig;
+import net.minecraft.client.renderer.EntityRenderer;
+import net.minecraft.entity.EntityLivingBase;
+import net.minecraft.potion.Potion;
+import org.spongepowered.asm.mixin.Mixin;
+import org.spongepowered.asm.mixin.injection.At;
+import org.spongepowered.asm.mixin.injection.Inject;
+import org.spongepowered.asm.mixin.injection.callback.CallbackInfoReturnable;
+
+@Mixin(EntityRenderer.class)
+public class EntityRendererMixin_NightVisionEffect {
+    @Inject(method = "getNightVisionBrightness", at = @At("HEAD"), cancellable = true)
+    private void cleanerNightVision(EntityLivingBase entitylivingbaseIn, float partialTicks, CallbackInfoReturnable<Float> cir) {
+        if (PatcherConfig.disableNightVision) {
+            cir.setReturnValue(0F);
+            return; // let's avoid checking for cleaner night vision if we're going to disable night vision anyway
+        }
+        if (PatcherConfig.cleanerNightVision) cir.setReturnValue(!(entitylivingbaseIn.getActivePotionEffect(Potion.nightVision).getDuration() < 200) ? 1.0F : (float) entitylivingbaseIn.getActivePotionEffect(Potion.nightVision).getDuration() / 200F);
+    }
+}

src/main/resources/mixins.patcher.json

@@ -126,6 +126,7 @@
     "features.EntityPlayerSPMixin_NauseaEffect",
     "features.EntityRendererMixin_CameraPerspective",
     "features.EntityRendererMixin_NametagBackground",
+    "features.EntityRendererMixin_NightVisionEffect",
     "features.EntityRendererMixin_ParallaxFix",
     "features.EntityRendererMixin_ShadowedNametags",
     "features.EntityRendererMixin_ViewBobbing",