Implement Simple Difficulty altitude modifier tweak

README.md

@@ -400,6 +400,7 @@ All changes are toggleable via config files.
     * **Early Register CT Chickens:** Improves load time by registering ContentTweaker chickens early for Roost to detect them
 * **Simple Difficulty**
     * **Iron Canteen Interaction Fix:** Fixes the interaction of iron canteens with rain collectors
+    * **Altitude Modifier:** Sets additional variables for altitude modifier calculations
 * **Simply Jetpacks**
     * **Memory Leak Fix:** Fixes a client-side memory leak associated with EntityPlayer
 * **Spice Of Life**

src/main/java/mod/acgaming/universaltweaks/config/UTConfigMods.java

@@ -854,6 +854,21 @@ public static class SimpleDifficultyCategory
         @Config.Name("Iron Canteen Interaction Fix")
         @Config.Comment("Fixes the interaction of iron canteens with rain collectors")
         public boolean utRainCollectorCanteenToggle = true;
+
+        @Config.RequiresMcRestart
+        @Config.Name("Altitude Modifier: Sea Level")
+        @Config.Comment("Sets the sea level for altitude modifier calculations")
+        public int utAltitudeSeaLevel = 64;
+
+        @Config.RequiresMcRestart
+        @Config.Name("Altitude Modifier: Above Sea Level Multiplier")
+        @Config.Comment("Sets the multiplier above sea level for altitude modifier calculations")
+        public double utAltitudeMultiplierAboveSeaLevel = 1.0D;
+
+        @Config.RequiresMcRestart
+        @Config.Name("Altitude Modifier: Below Sea Level Multiplier")
+        @Config.Comment("Sets the multiplier below sea level for altitude modifier calculations")
+        public double utAltitudeMultiplierBelowSeaLevel = 1.0D;
     }
 
     public static class SimplyJetpacksCategory

src/main/java/mod/acgaming/universaltweaks/mods/simpledifficulty/mixin/UTModifierAltitudeMixin.java

@@ -0,0 +1,27 @@
+package mod.acgaming.universaltweaks.mods.simpledifficulty.mixin;
+
+import net.minecraft.util.math.BlockPos;
+import net.minecraft.world.World;
+
+import com.charles445.simpledifficulty.config.ModConfig;
+import com.charles445.simpledifficulty.temperature.ModifierAltitude;
+import mod.acgaming.universaltweaks.config.UTConfigMods;
+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(value = ModifierAltitude.class, remap = false)
+public class UTModifierAltitudeMixin
+{
+    @Inject(method = "getWorldInfluence", at = @At(value = "RETURN"), cancellable = true)
+    public void utModifierAltitude(World world, BlockPos pos, CallbackInfoReturnable<Float> cir)
+    {
+        if (!world.provider.isSurfaceWorld()) cir.setReturnValue(0.0F);
+
+        float seaLevel = UTConfigMods.SIMPLE_DIFFICULTY.utAltitudeSeaLevel;
+        float multiplier = pos.getY() > seaLevel ? (float) UTConfigMods.SIMPLE_DIFFICULTY.utAltitudeMultiplierAboveSeaLevel : (float) UTConfigMods.SIMPLE_DIFFICULTY.utAltitudeMultiplierBelowSeaLevel;
+
+        cir.setReturnValue(-1.0F * (Math.abs(((seaLevel - pos.getY()) / seaLevel * ModConfig.server.temperature.altitudeMultiplier * multiplier) + 1.0F)));
+    }
+}

src/main/resources/mixins.mods.simpledifficulty.json

@@ -3,5 +3,5 @@
   "refmap": "universaltweaks.refmap.json",
   "minVersion": "0.8",
   "compatibilityLevel": "JAVA_8",
-  "mixins": ["UTRainCollectorCanteenMixin"]
+  "mixins": ["UTModifierAltitudeMixin", "UTRainCollectorCanteenMixin"]
 }