From 66119b059c2dd0dc998e01e2bd77f81959a7e548 Mon Sep 17 00:00:00 2001
From: dragoncommands <35853220+dragonflame86@users.noreply.github.com>
Date: Thu, 30 Nov 2023 21:59:55 -0500
Subject: [PATCH] MeasurementUtils Added: - method to assist in measurement of
 distance render-side - added function to determine gradient for height
 relative to sea level.

---
 .../mixin/client/BackgroundRendererMixin.java | 56 +++++++++++--------
 .../aquatic/utils/MeasurementUtils.java       | 13 +++++
 2 files changed, 47 insertions(+), 22 deletions(-)
 create mode 100644 src/main/java/dev/hybridlabs/aquatic/utils/MeasurementUtils.java

diff --git a/src/client/java/dev/hybridlabs/aquatic/mixin/client/BackgroundRendererMixin.java b/src/client/java/dev/hybridlabs/aquatic/mixin/client/BackgroundRendererMixin.java
index 792a131dc..a1ef11b2f 100644
--- a/src/client/java/dev/hybridlabs/aquatic/mixin/client/BackgroundRendererMixin.java
+++ b/src/client/java/dev/hybridlabs/aquatic/mixin/client/BackgroundRendererMixin.java
@@ -19,6 +19,7 @@
 import org.jetbrains.annotations.NotNull;
 import org.spongepowered.asm.mixin.Mixin;
 import org.spongepowered.asm.mixin.Shadow;
+import org.spongepowered.asm.mixin.Unique;
 import org.spongepowered.asm.mixin.injection.At;
 import org.spongepowered.asm.mixin.injection.Inject;
 import org.spongepowered.asm.mixin.injection.ModifyVariable;
@@ -69,44 +70,55 @@ public class BackgroundRendererMixin {
     @Inject(method = "applyFog", at=@At(value = "INVOKE", target = "Lcom/mojang/blaze3d/systems/RenderSystem;setShaderFogStart(F)V"), locals = LocalCapture.CAPTURE_FAILHARD)
     private static void hybrid$renderFog(Camera camera, BackgroundRenderer.FogType fogType, float viewDistance, boolean thickFog, float tickDelta, CallbackInfo ci, CameraSubmersionType cameraSubmersionType, Entity entity, BackgroundRenderer.FogData fogData) {
 
-        World world = entity.getWorld();
+        if (entity instanceof ClientPlayerEntity clientPlayerEntity) {
 
+            World world = clientPlayerEntity.getWorld();
 
-        switch (cameraSubmersionType) {
+            switch (cameraSubmersionType) {
 
-            case LAVA, POWDER_SNOW -> {
-                // Empty cause no real need.
-            }
-            case WATER -> {
-                fogData.fogStart = -8.0F;
+                case LAVA, POWDER_SNOW -> {
+                    // Empty cause no real need.
+                }
+                case WATER -> {
+                    fogData.fogStart = -8.0F;
 
-                int topY = world.getSeaLevel();
-                float fogStep = (float) (topY - camera.getPos().y) / 32.0f; // as usual modify this end variable for when water fog should reach maximum darkness
-                // arg after start is the default fog starting point
-                // arg after that one is where the fog ends distance wise
-                fogData.fogEnd = MathHelper.lerp(fogStep, 80.0f, 12.0f);
-                if (entity instanceof ClientPlayerEntity clientPlayerEntity) {
+                    int topY = world.getSeaLevel();
+                    float fogStep = (float) (topY - camera.getPos().y) / 32.0f; // as usual modify this end variable for when water fog should reach maximum darkness
+                    // arg after start is the default fog starting point
+                    // arg after that one is where the fog ends distance wise
+                    fogData.fogEnd = MathHelper.lerp(fogStep, 80.0f, 12.0f);
                     fogData.fogEnd *= Math.max(0.25F, clientPlayerEntity.getUnderwaterVisibility());
                     RegistryEntry<Biome> registryEntry = world.getBiome(clientPlayerEntity.getBlockPos());
                     if (registryEntry.isIn(BiomeTags.HAS_CLOSER_WATER_FOG)) {
                         fogData.fogEnd *= 1.0F;
                     }
-                }
 
-                if (fogData.fogEnd > viewDistance) {
-                    fogData.fogEnd = viewDistance;
-                    fogData.fogShape = FogShape.CYLINDER;
+                    if (fogData.fogEnd > viewDistance) {
+                        fogData.fogEnd = viewDistance;
+                        fogData.fogShape = FogShape.CYLINDER;
+                    }
+                    fogData.fogEnd = Math.max(fogData.fogEnd, 12.0f);
                 }
-                fogData.fogEnd = Math.max(fogData.fogEnd, 12.0f);
-            }
-            case NONE -> {
+                case NONE -> {
 
-                RegistryEntry<Biome> biomeEntry = world.getBiome(entity.getBlockPos());
+                    RegistryEntry<Biome> biomeEntry = world.getBiome(entity.getBlockPos());
 
-                if(entity instanceof ClientPlayerEntity player && biomeEntry.isIn(BiomeTags.IS_OCEAN)) {
+                    if (biomeEntry.isIn(BiomeTags.IS_OCEAN)) {
 
+                    }
                 }
             }
         }
     }
+
+    /**
+     *
+     * @param height
+     * @param gradientBegin
+     * @param gradientEnd
+     * @return
+     */
+    @Unique private float getSeaLevelGradient(float height, float gradientBegin, float gradientEnd) {
+        return 1.0f;
+    }
 }
diff --git a/src/main/java/dev/hybridlabs/aquatic/utils/MeasurementUtils.java b/src/main/java/dev/hybridlabs/aquatic/utils/MeasurementUtils.java
new file mode 100644
index 000000000..ff78094e5
--- /dev/null
+++ b/src/main/java/dev/hybridlabs/aquatic/utils/MeasurementUtils.java
@@ -0,0 +1,13 @@
+package dev.hybridlabs.aquatic.utils;
+
+public class MeasurementUtils {
+
+    /**
+     * Gets blocks in render-distance scale of measurement
+     * @param distance the distance you want.
+     * @return distances * 4 which turns into real-world block measurements
+     */
+    public static float Block(float distance) {
+        return distance * 4;
+    }
+}