Fix skeleton legs from being jammed into their pelvis (#1747)

src/main/java/com/gtnewhorizons/angelica/mixins/Mixins.java

@@ -38,6 +38,7 @@ public enum Mixins implements IMixins {
             , "angelica.MixinMinecraftServer"
             , "angelica.bugfixes.MixinItemRenderer_EdgeDepth"
             , "angelica.bugfixes.MixinModelCreeper_AuraBodyInflate"
+            , "angelica.bugfixes.MixinModelSkeleton_LegPelvisZFight"
             , "angelica.bugfixes.MixinModelWither_ArmorCentering"
             , "angelica.bugfixes.MixinRenderBlocks_CrossedSquaresNormal"
             , "angelica.bugfixes.MixinRenderCreeper_AuraDepth"

src/mixin/java/com/gtnewhorizons/angelica/mixins/early/angelica/bugfixes/MixinModelSkeleton_LegPelvisZFight.java

@@ -0,0 +1,31 @@
+package com.gtnewhorizons.angelica.mixins.early.angelica.bugfixes;
+
+import net.minecraft.client.model.ModelSkeleton;
+import net.minecraft.entity.Entity;
+import org.spongepowered.asm.mixin.Mixin;
+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.callback.CallbackInfo;
+
+/**
+ * Prevents z-fighting between the skeleton's leg tops and the pelvis (bipedBody) bottom face.
+ */
+@Mixin(ModelSkeleton.class)
+public class MixinModelSkeleton_LegPelvisZFight {
+
+    @Unique
+    private static final float LEG_PIVOT_Y = Float.intBitsToFloat(Float.floatToIntBits(12.0F) + 128);
+
+    @Inject(
+        method = "setRotationAngles(FFFFFFLnet/minecraft/entity/Entity;)V",
+        at = @At("TAIL")
+    )
+    private void angelica$nudgeLegsBelowPelvis(float swing, float swingAmount, float ticks,
+                                               float headYaw, float headPitch, float scale,
+                                               Entity entity, CallbackInfo ci) {
+        final ModelSkeleton self = (ModelSkeleton) (Object) this;
+        self.bipedRightLeg.rotationPointY = LEG_PIVOT_Y;
+        self.bipedLeftLeg.rotationPointY = LEG_PIVOT_Y;
+    }
+}