fix: Fix repeated config file saving on game startup

build.gradle

@@ -52,6 +52,9 @@ dependencies {
 
     // Distant Horizons
     modImplementation "blank:DistantHorizons-2.0.2-a-dev-1.20.1"
+
+    // Apache Commons Math
+    implementation include("org.apache.commons:commons-math3:${project.apache_commons_math_version}")
 }
 
 processResources {

gradle.properties

@@ -18,3 +18,4 @@ fabric_version=0.86.1+1.20.1
 modmenu_version=7.2.1
 sodium_version=mc1.20.1-0.5.2
 iris_shaders_version=1.6.8+1.20.1
+apache_commons_math_version=3.6.1

src/main/java/io/github/steveplays28/blendium/client/compat/distanthorizons/BlendiumAfterDhInitEventHandler.java

@@ -4,6 +4,7 @@
 import com.seibel.distanthorizons.api.methods.events.abstractEvents.DhApiAfterDhInitEvent;
 import com.seibel.distanthorizons.api.methods.events.sharedParameterObjects.DhApiEventParam;
 import io.github.steveplays28.blendium.client.compat.iris.BlendiumDhShaderpackPresets;
+import org.apache.commons.math3.util.Precision;
 
 import static io.github.steveplays28.blendium.client.BlendiumClient.*;
 
@@ -17,6 +18,16 @@ public void afterDistantHorizonsInit(DhApiEventParam<Void> input) {
 
 	private void onBrightnessMultiplierChanged(Double brightnessMultiplier) {
 		DhApi.Delayed.configs.graphics().brightnessMultiplier().setValue(null);
+
+		// Check if the changed value is the same as the currently stored value, and discard the save attempt if true
+		// This avoids resaving the config file multiple times (e.x. during game loading)
+		if (Precision.equals(
+				brightnessMultiplier,
+				config.shaderpackBrightnessMultipliers.getOrDefault(BlendiumDhShaderpackPresets.getShaderpackName(), brightnessMultiplier)
+		)) {
+			return;
+		}
+
 		config.shaderpackBrightnessMultipliers.put(BlendiumDhShaderpackPresets.getShaderpackName(), brightnessMultiplier);
 		saveConfig();
 
@@ -27,6 +38,16 @@ private void onBrightnessMultiplierChanged(Double brightnessMultiplier) {
 
 	private void onSaturationMultiplierChanged(Double saturationMultiplier) {
 		DhApi.Delayed.configs.graphics().saturationMultiplier().setValue(null);
+
+		// Check if the changed value is the same as the currently stored value, and discard the save attempt if true
+		// This avoids resaving the config file multiple times (e.x. during game loading)
+		if (Precision.equals(
+				saturationMultiplier,
+				config.shaderpackSaturationMultipliers.getOrDefault(BlendiumDhShaderpackPresets.getShaderpackName(), saturationMultiplier)
+		)) {
+			return;
+		}
+
 		config.shaderpackSaturationMultipliers.put(BlendiumDhShaderpackPresets.getShaderpackName(), saturationMultiplier);
 		saveConfig();