Add config for snow on blue ice

Author: BillyGalbreath

patches/server/0241-Add-config-for-snow-on-blue-ice.patch

@@ -0,0 +1,10 @@
+--- a/net/minecraft/world/level/block/SnowLayerBlock.java
++++ b/net/minecraft/world/level/block/SnowLayerBlock.java
+@@ -96,6 +_,7 @@
+     @Override
+     protected boolean canSurvive(BlockState state, LevelReader level, BlockPos pos) {
+         BlockState blockState = level.getBlockState(pos.below());
++        if (blockState.is(Blocks.BLUE_ICE) && !level.getWorldBorder().world.purpurConfig.snowOnBlueIce) return false; // Purpur - Add config for snow on blue ice
+         return !blockState.is(BlockTags.SNOW_LAYER_CANNOT_SURVIVE_ON)
+             && (
+                 blockState.is(BlockTags.SNOW_LAYER_CAN_SURVIVE_ON)

purpur-server/minecraft-patches/sources/net/minecraft/world/level/block/SnowLayerBlock.java.patch

@@ -974,9 +974,11 @@ private void furnaceSettings() {
 
     public boolean mobsSpawnOnPackedIce = true;
     public boolean mobsSpawnOnBlueIce = true;
+    public boolean snowOnBlueIce = true;
     private void iceSettings() {
         mobsSpawnOnPackedIce = getBoolean("blocks.packed_ice.allow-mob-spawns", mobsSpawnOnPackedIce);
         mobsSpawnOnBlueIce = getBoolean("blocks.blue_ice.allow-mob-spawns", mobsSpawnOnBlueIce);
+        snowOnBlueIce = getBoolean("blocks.blue_ice.allow-snow-formation", snowOnBlueIce);
     }
 
     public int lavaInfiniteRequiredSources = 2;