Add convenience config options

Add option to send all flowerparts for 1.13+ as stems if a block is above
Add option to send 1-layer snow as 2-layers for 1.13+ to fix collision

bukkit/src/main/java/us/myles/ViaVersion/bukkit/platform/BukkitViaConfig.java

@@ -234,4 +234,14 @@ public class BukkitViaConfig extends Config implements ViaVersionConfig {
     public boolean isReduceBlockStorageMemory() {
         return getBoolean("reduce-blockstorage-memory", false);
     }
+
+    @Override
+    public boolean isStemWhenBlockAbove() {
+        return getBoolean("flowerstem-when-block-above", false);
+    }
+
+    @Override
+    public boolean isSnowCollisionFix() {
+        return getBoolean("fix-low-snow-collision", false);
+    }
 }

bungee/src/main/java/us/myles/ViaVersion/bungee/platform/BungeeViaConfig.java

@@ -287,4 +287,14 @@ public class BungeeViaConfig extends Config implements ViaVersionConfig {
     public boolean isReduceBlockStorageMemory() {
         return getBoolean("reduce-blockstorage-memory", false);
     }
+
+    @Override
+    public boolean isStemWhenBlockAbove() {
+        return getBoolean("flowerstem-when-block-above", false);
+    }
+
+    @Override
+    public boolean isSnowCollisionFix() {
+        return getBoolean("fix-low-snow-collision", false);
+    }
 }

common/src/main/java/us/myles/ViaVersion/api/ViaVersionConfig.java

@@ -287,4 +287,19 @@ public interface ViaVersionConfig {
      * @return True if enabled
      */
     boolean isReduceBlockStorageMemory();
+
+    /**
+     * When activated with serverside-blockconnections, flower parts with blocks above will be sent as stems.
+     * Useful for lobbyservers where users can't build and those stems are used decoratively.
+     *
+     * @return True if enabled
+     */
+    boolean isStemWhenBlockAbove();
+
+    /**
+     * When activated, the 1-layer snow will be sent as 2-layer snow to 1.13+ clients to have collision.
+     *
+     * @return True if enabled
+     */
+    boolean isSnowCollisionFix();
 }

common/src/main/java/us/myles/ViaVersion/protocols/protocol1_13to1_12_2/blockconnections/FlowerConnectionHandler.java

@@ -1,5 +1,6 @@
 package us.myles.ViaVersion.protocols.protocol1_13to1_12_2.blockconnections;
 
+import us.myles.ViaVersion.api.Via;
 import us.myles.ViaVersion.api.data.UserConnection;
 import us.myles.ViaVersion.api.minecraft.BlockFace;
 import us.myles.ViaVersion.api.minecraft.Position;
@@ -11,10 +12,10 @@ import java.util.Set;
 
 
 public class FlowerConnectionHandler extends ConnectionHandler {
-    private static Set<String> baseFlower = new HashSet<>();
     private static Map<Integer, Integer> flowers = new HashMap<>();
 
     static void init() {
+        Set<String> baseFlower = new HashSet<>();
         baseFlower.add("minecraft:rose_bush");
         baseFlower.add("minecraft:sunflower");
         baseFlower.add("minecraft:peony");
@@ -22,9 +23,7 @@ public class FlowerConnectionHandler extends ConnectionHandler {
         baseFlower.add("minecraft:large_fern");
         baseFlower.add("minecraft:lilac");
 
-
         FlowerConnectionHandler handler = new FlowerConnectionHandler();
-
         for (Map.Entry<String, Integer> blockState : ConnectionData.keyToId.entrySet()) {
             WrappedBlockData data = WrappedBlockData.fromString(blockState.getKey());
             if (baseFlower.contains(data.getMinecraftKey())) {
@@ -40,9 +39,16 @@ public class FlowerConnectionHandler extends ConnectionHandler {
     @Override
     public int connect(UserConnection user, Position position, int blockState) {
         int blockBelowId = getBlockData(user, position.getRelative(BlockFace.BOTTOM));
-        if (flowers.containsKey(blockBelowId) && !flowers.containsKey(getBlockData(user, position.getRelative(BlockFace.TOP)))) {
+        if (flowers.containsKey(blockBelowId)) {
+            int blockAboveId = getBlockData(user, position.getRelative(BlockFace.TOP));
+            if (Via.getConfig().isStemWhenBlockAbove()) {
+                if (blockAboveId == 0) {
                     return flowers.get(blockBelowId);
                 }
+            } else if (!flowers.containsKey(blockAboveId)) {
+                return flowers.get(blockBelowId);
+            }
+        }
         return blockState;
     }
 }

common/src/main/java/us/myles/ViaVersion/protocols/protocol1_13to1_12_2/data/MappingData.java

@@ -195,6 +195,10 @@ public class MappingData {
         private BlockMappingsShortArray(JsonObject mapping1_12, JsonObject mapping1_13) {
             Arrays.fill(oldToNew, (short) -1);
             mapIdentifiers(oldToNew, mapping1_12, mapping1_13);
+            // Map minecraft:snow[layers=1] of 1.12 to minecraft:snow[layers=2] in 1.13
+            if (Via.getConfig().isSnowCollisionFix()) {
+                oldToNew[1248] = 3416;
+            }
         }
 
         @Override

common/src/main/resources/assets/viaversion/config.yml

@@ -114,9 +114,21 @@ team-colour-fix: true
 suppress-1_13-conversion-errors: false
 # 1.13 introduced new auto complete which can trigger "Kicked for spamming" for servers older than 1.13, the following option will disable it completely.
 disable-1_13-auto-complete: false
+# For 1.13 clients the smallest (1 layer) snow doesn't have collision, this will send these as 2 snowlayers for 1.13+ clients to prevent them bugging through them
+fix-low-snow-collision: false
+#
+# Enable serverside block-connections for 1.13+ clients
+serverside-blockconnections: false
+# Sets the method for the block connections (world for world-level or packet for packet-level)
+blockconnection-method: world
+# When activated, only the most important blocks are stored in the blockstorage. (fences, glass panes etc. won't connect to solid blocks)
+reduce-blockstorage-memory: false
+# When activated with serverside-blockconnections, flower parts with blocks above will be sent as stems
+# Useful for lobbyservers where users can't build and those stems are used decoratively
+flowerstem-when-block-above: false
 #
 #----------------------------------------------------------#
-#         1.9 & 1.10 CLIENTS ON 1.8 SERVERS OPTIONS        #
+#             1.9+ CLIENTS ON 1.8 SERVERS OPTIONS          #
 #----------------------------------------------------------#
 #
 # No collide options, these allow you to configure how collision works.
@@ -126,7 +138,7 @@ prevent-collision: true
 auto-team: true
 # When enabled if certain metadata can't be read we won't tell you about it
 suppress-metadata-errors: false
-# When enabled 1.9 & 1.10 will be able to block by using shields
+# When enabled 1.9+ will be able to block by using shields
 shield-blocking: true
 # Enable player tick simulation, this fixes eating, drinking, nether portals.
 simulate-pt: true
@@ -134,15 +146,15 @@ simulate-pt: true
 nms-player-ticking: true
 # Should we patch boss bars so they work? (Default: true, disable if you're having issues)
 bossbar-patch: true
-# If your boss bar flickers on 1.9 & 1.10, set this to 'true'. It will keep all boss bars on 100% (not recommended)
+# If your boss bar flickers on 1.9+, set this to 'true'. It will keep all boss bars on 100% (not recommended)
 bossbar-anti-flicker: false
-# This will show the new effect indicator in the top-right corner for 1.9 & 1.10 players.
+# This will show the new effect indicator in the top-right corner for 1.9+ players.
 use-new-effect-indicator: true
-# Show the new death messages for 1.9 & 1.10 on the death screen
+# Show the new death messages for 1.9+ on the death screen
 use-new-deathmessages: true
 # Should we cache our items, this will prevent server from being lagged out, however the cost is a constant task caching items
 item-cache: true
-# Patch the Anti xray to work on 1.9 & 1.10 (If your server is 1.8) This can cost more performance, so disable it if you don't use it.
+# Patch the anti xray to work on 1.9+ (If your server is 1.8) This can cost more performance, so disable it if you don't use it.
 anti-xray-patch: true
 # Should we replace extended pistons to fix 1.10.1 (Only on chunk load)
 replace-pistons: false
@@ -152,9 +164,3 @@ replacement-piston-id: 0
 force-json-transform: false
 # Minimize the cooldown animation in 1.8 servers
 minimize-cooldown: true
-# Enable serverside block-connections for 1.13+ clients
-serverside-blockconnections: false
-# Sets the method for the block connections (world for world-level or packet for packet-level)
-blockconnection-method: world
-# When activated, only the most important blocks are stored in the blockstorage. (fences, glass panes etc. won't connect to solid blocks)
-reduce-blockstorage-memory: false

sponge/src/main/java/us/myles/ViaVersion/sponge/platform/SpongeViaConfig.java

@@ -240,4 +240,14 @@ public class SpongeViaConfig extends Config implements ViaVersionConfig {
     public boolean isReduceBlockStorageMemory() {
         return getBoolean("reduce-blockstorage-memory", false);
     }
+
+    @Override
+    public boolean isStemWhenBlockAbove() {
+        return getBoolean("flowerstem-when-block-above", false);
+    }
+
+    @Override
+    public boolean isSnowCollisionFix() {
+        return getBoolean("fix-low-snow-collision", false);
+    }
 }

velocity/src/main/java/us/myles/ViaVersion/velocity/platform/VelocityViaConfig.java

@@ -292,4 +292,14 @@ public class VelocityViaConfig extends Config implements ViaVersionConfig {
     public boolean isReduceBlockStorageMemory() {
         return getBoolean("reduce-blockstorage-memory", false);
     }
+
+    @Override
+    public boolean isStemWhenBlockAbove() {
+        return getBoolean("flowerstem-when-block-above", false);
+    }
+
+    @Override
+    public boolean isSnowCollisionFix() {
+        return getBoolean("fix-low-snow-collision", false);
+    }
 }