[1.20.x] [All] [Feature]: Skybox and fog colors (#60)

Co-authored-by: Edouard127 <46357922+Edouard127@users.noreply.github.com>
Co-authored-by: Constructor <fractalminds@protonmail.com>

Author: 3 people

common/src/main/java/com/lambda/mixin/render/BackgroundRendererMixin.java

@@ -0,0 +1,26 @@
+package com.lambda.mixin.render;
+
+import com.lambda.module.modules.render.WorldColors;
+import net.minecraft.client.render.BackgroundRenderer;
+import net.minecraft.util.math.Vec3d;
+import org.spongepowered.asm.mixin.Mixin;
+import org.spongepowered.asm.mixin.injection.At;
+import org.spongepowered.asm.mixin.injection.Redirect;
+
+@Mixin(BackgroundRenderer.class)
+public class BackgroundRendererMixin {
+    @Redirect(method = "render", at = @At(value = "INVOKE", target = "Lnet/minecraft/util/math/Vec3d;getX()D"))
+    private static double redirectRed(Vec3d baseColor) {
+        return WorldColors.backgroundColor(baseColor).getX();
+    }
+
+    @Redirect(method = "render", at = @At(value = "INVOKE", target = "Lnet/minecraft/util/math/Vec3d;getY()D"))
+    private static double redirectGreen(Vec3d baseColor) {
+        return WorldColors.backgroundColor(baseColor).getY();
+    }
+
+    @Redirect(method = "render", at = @At(value = "INVOKE", target = "Lnet/minecraft/util/math/Vec3d;getZ()D"))
+    private static double redirectBlue(Vec3d baseColor) {
+        return WorldColors.backgroundColor(baseColor).getZ();
+    }
+}

common/src/main/java/com/lambda/mixin/render/RenderSystemMixin.java

@@ -0,0 +1,26 @@
+package com.lambda.mixin.render;
+
+import com.lambda.module.modules.render.WorldColors;
+import com.mojang.blaze3d.systems.RenderSystem;
+import org.spongepowered.asm.mixin.Final;
+import org.spongepowered.asm.mixin.Mixin;
+import org.spongepowered.asm.mixin.Shadow;
+import org.spongepowered.asm.mixin.injection.At;
+import org.spongepowered.asm.mixin.injection.Inject;
+import org.spongepowered.asm.mixin.injection.callback.CallbackInfo;
+
+@Mixin(RenderSystem.class)
+public class RenderSystemMixin {
+    @Shadow @Final private static float[] shaderFogColor;
+
+    @Inject(method = "_setShaderFogColor", at = @At(value ="HEAD"), cancellable = true)
+    private static void onSetShaderFogColor(float red, float green, float blue, float alpha, CallbackInfo ci){
+        if (WorldColors.INSTANCE.isEnabled() && WorldColors.getCustomFog()){
+            ci.cancel();
+            shaderFogColor[0] = WorldColors.getFogColor().getRed() / 255f;
+            shaderFogColor[1] = WorldColors.getFogColor().getGreen() / 255f;
+            shaderFogColor[2] = WorldColors.getFogColor().getBlue() / 255f;
+            shaderFogColor[3] = WorldColors.getFogColor().getAlpha() / 255f;
+        }
+    }
+}

common/src/main/java/com/lambda/mixin/world/ClientWorldMixin.java

@@ -2,14 +2,18 @@
 
 import com.lambda.event.EventFlow;
 import com.lambda.event.events.WorldEvent;
+import com.lambda.module.modules.render.WorldColors;
+import com.lambda.util.math.ColorUtils;
 import net.minecraft.block.BlockState;
 import net.minecraft.client.world.ClientWorld;
 import net.minecraft.entity.Entity;
 import net.minecraft.util.math.BlockPos;
+import net.minecraft.util.math.Vec3d;
 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.CallbackInfo;
+import org.spongepowered.asm.mixin.injection.callback.CallbackInfoReturnable;
 
 @Mixin(ClientWorld.class)
 public class ClientWorldMixin {
@@ -24,4 +28,18 @@ private void handleBlockUpdateInject(BlockPos pos, BlockState state, int flags,
     private void addEntity(Entity entity, CallbackInfo ci) {
         if (EventFlow.post(new WorldEvent.EntitySpawn(entity)).isCanceled()) ci.cancel();
     }
+
+    @Inject(method = "getCloudsColor", at = @At("HEAD"), cancellable = true)
+    private void getCloudsColorInject(float tickDelta, CallbackInfoReturnable<Vec3d> cir) {
+        if (WorldColors.INSTANCE.isEnabled() && WorldColors.getCustomClouds()) {
+            cir.setReturnValue(ColorUtils.getVec3d(WorldColors.getCloudColor()));
+        }
+    }
+
+    @Inject(method = "getSkyColor", at = @At("HEAD"), cancellable = true)
+    private void getSkyColorInject(Vec3d cameraPos, float tickDelta, CallbackInfoReturnable<Vec3d> cir) {
+        if (WorldColors.INSTANCE.isEnabled() && WorldColors.getCustomSky()) {
+            cir.setReturnValue(ColorUtils.getVec3d(WorldColors.getSkyColor()));
+        }
+    }
 }

common/src/main/kotlin/com/lambda/module/modules/render/WorldColors.kt

@@ -0,0 +1,30 @@
+package com.lambda.module.modules.render
+
+import com.lambda.module.Module
+import com.lambda.module.tag.ModuleTag
+import com.lambda.util.math.ColorUtils.vec3d
+import net.minecraft.util.math.Vec3d
+import java.awt.Color
+
+object WorldColors : Module(
+    name = "World Colors",
+    description = "Changes the color of the sky",
+    defaultTags = setOf(ModuleTag.RENDER)
+){
+    @JvmStatic
+    val customSky by setting("Custom Sky", true)
+    @JvmStatic
+    val skyColor by setting("Sky Color", Color(255, 24, 75), "The color of your sky") { customSky }
+    @JvmStatic
+    val customFog by setting("Custom Fog",false)
+    @JvmStatic
+    val fogColor by setting("Fog Color", Color(255, 24, 75, 255), "The color of your fog") { customFog }
+    @JvmStatic
+    val customClouds by setting("Custom Clouds", false)
+    @JvmStatic
+    val cloudColor by setting("Cloud Color", Color(255, 24, 75)) { customClouds }
+
+    @JvmStatic
+    fun backgroundColor(base: Vec3d) =
+        if (customFog && isEnabled) fogColor.vec3d else base
+}

common/src/main/kotlin/com/lambda/util/math/ColorUtils.kt

@@ -1,5 +1,6 @@
 package com.lambda.util.math
 
+import net.minecraft.util.math.Vec3d
 import java.awt.Color
 
 object ColorUtils {
@@ -13,4 +14,7 @@ object ColorUtils {
     val Color.g get() = green.toDouble() / 255.0
     val Color.b get() = blue.toDouble() / 255.0
     val Color.a get() = alpha.toDouble() / 255.0
+
+    @JvmStatic
+    val Color.vec3d get() = Vec3d(r, g, b)
 }

common/src/main/resources/lambda.mixins.common.json

@@ -22,6 +22,7 @@
     "network.HandshakeC2SPacketMixin",
     "network.LoginHelloC2SPacketMixin",
     "network.LoginKeyC2SPacketMixin",
+    "render.BackgroundRendererMixin",
     "render.BlockRenderManagerMixin",
     "render.CameraMixin",
     "render.ChatInputSuggestorMixin",
@@ -34,6 +35,7 @@
     "render.LightmapTextureManagerMixin",
     "render.LivingEntityRendererMixin",
     "render.RenderLayersMixin",
+    "render.RenderSystemMixin",
     "render.RenderTickCounterMixin",
     "render.ScreenHandlerMixin",
     "render.VertexBufferMixin",