Prevent elevation-based entity filtering

VoxelMap considers elevation in a distance calculation which filters out far-away entities from being rendered on the minimap. This has been fixed by pretending the entity's Y-level is the same as the player's.

Author: Protonull

src/main/java/uk/protonull/civvoxelmap/mixins/elevation/RadarPreventElevationFilteringMixin.java

@@ -0,0 +1,25 @@
+package uk.protonull.civvoxelmap.mixins.elevation;
+
+import com.mamiyaotaru.voxelmap.Radar;
+import com.mamiyaotaru.voxelmap.util.GameVariableAccessShim;
+import net.minecraft.world.phys.Vec3;
+import org.jetbrains.annotations.NotNull;
+import org.spongepowered.asm.mixin.Mixin;
+import org.spongepowered.asm.mixin.injection.At;
+import org.spongepowered.asm.mixin.injection.Redirect;
+
+@Mixin(Radar.class)
+public abstract class RadarPreventElevationFilteringMixin {
+    @Redirect(
+        method = "calculateMobs",
+        at = @At(
+            value = "INVOKE",
+            target = "Lnet/minecraft/world/phys/Vec3;y()D"
+        )
+    )
+    protected double civvoxelmap$useSameElevationAsPlayer(
+        final @NotNull Vec3 instance
+    ) {
+        return GameVariableAccessShim.yCoord();
+    }
+}

src/main/java/uk/protonull/civvoxelmap/mixins/elevation/RadarSimplePreventElevationFilteringMixin.java

@@ -0,0 +1,25 @@
+package uk.protonull.civvoxelmap.mixins.elevation;
+
+import com.mamiyaotaru.voxelmap.RadarSimple;
+import com.mamiyaotaru.voxelmap.util.GameVariableAccessShim;
+import net.minecraft.world.phys.Vec3;
+import org.jetbrains.annotations.NotNull;
+import org.spongepowered.asm.mixin.Mixin;
+import org.spongepowered.asm.mixin.injection.At;
+import org.spongepowered.asm.mixin.injection.Redirect;
+
+@Mixin(RadarSimple.class)
+public abstract class RadarSimplePreventElevationFilteringMixin {
+    @Redirect(
+        method = "calculateMobs",
+        at = @At(
+            value = "INVOKE",
+            target = "Lnet/minecraft/world/phys/Vec3;y()D"
+        )
+    )
+    protected double civvoxelmap$useSameElevationAsPlayer(
+        final @NotNull Vec3 instance
+    ) {
+        return GameVariableAccessShim.yCoord();
+    }
+}

src/main/resources/civvoxelmap.mixins.json

@@ -12,6 +12,8 @@
         "commands.DisableVoxelMapCommands",
         "commands.ReplaceVoxelMapCommands",
         "elevation.ObscureElevationMixin",
+        "elevation.RadarPreventElevationFilteringMixin",
+        "elevation.RadarSimplePreventElevationFilteringMixin",
         "radar.RadarMixin",
         "radar.RadarSimpleMixin",
         "settings.GuiMinimapOptionsMixin",