updates

src/main/java/com/gmail/s154095g/dp_snake/SnakeMod.java

@@ -7,17 +7,22 @@
 import net.fabricmc.fabric.api.command.v2.CommandRegistrationCallback;
 import net.fabricmc.fabric.api.event.lifecycle.v1.ServerLifecycleEvents;
 import net.fabricmc.fabric.api.event.lifecycle.v1.ServerTickEvents;
+import net.fabricmc.fabric.api.event.player.UseBlockCallback;
+import net.fabricmc.fabric.api.event.player.UseEntityCallback;
 import net.fabricmc.fabric.api.networking.v1.ServerPlayConnectionEvents;
+import net.minecraft.entity.player.PlayerEntity;
 import net.minecraft.item.Item;
 import net.minecraft.registry.Registries;
 import net.minecraft.registry.Registry;
 import net.minecraft.server.network.ServerPlayerEntity;
+import net.minecraft.util.ActionResult;
 import net.minecraft.util.math.BlockPos;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
 import java.util.HashMap;
 import java.util.Objects;
+import java.util.UUID;
 
 public class SnakeMod implements ModInitializer {
 	public static final String MOD_ID = "dp_snake";
@@ -29,7 +34,7 @@ public class SnakeMod implements ModInitializer {
 	public static final Item SNAKE_SOUTH = Registry.register(Registries.ITEM, Utils.identifier("snake_south"), new SnakeController(0, 1));
 	public static final Item SNAKE_WEST = Registry.register(Registries.ITEM, Utils.identifier("snake_west"), new SnakeController(-1, 0));
 
-	public static final HashMap<ServerPlayerEntity, SnakeGame> activeGames = new HashMap<>();
+	public static final HashMap<UUID, SnakeGame> activeGames = new HashMap<>();
 
 	@Override
 	public void onInitialize() {
@@ -52,25 +57,35 @@ public void onInitialize() {
 			activeGames.clear();
 		});
 
+		UseBlockCallback.EVENT.register((player, world, hand, hitResult) -> PreventInteractions(player));
+		UseEntityCallback.EVENT.register((player, world, hand, entity, hitResult) -> PreventInteractions(player));
+
 		LOGGER.info("Successfully set up dp_snake mod!");
 	}
 
+	public ActionResult PreventInteractions(PlayerEntity player){
+		if (activeGames.containsKey(player.getUuid())) {
+			return ActionResult.FAIL;
+		}
+		return ActionResult.PASS;
+	}
+
 	public static void addGame(ServerPlayerEntity player, BlockPos corner1, BlockPos corner2){
 		Objects.requireNonNull(player, "Missing player!");
 		Objects.requireNonNull(corner1, "Missing corner 1!");
 		Objects.requireNonNull(corner2, "Missing corner 2!");
 
-		if (activeGames.containsKey(player)){
-			activeGames.get(player).stop();
+		if (activeGames.containsKey(player.getUuid())){
+			activeGames.get(player.getUuid()).stop();
 		}
 
-		activeGames.put(player, new SnakeGame(player, corner1, corner2));
+		activeGames.put(player.getUuid(), new SnakeGame(player, corner1, corner2));
 	}
 
 	public static boolean removeGame(ServerPlayerEntity player){
 		if (player == null) return false;
-		if (activeGames.containsKey(player))
-			activeGames.get(player).stop();
-		return activeGames.remove(player) != null;
+		if (activeGames.containsKey(player.getUuid()))
+			activeGames.get(player.getUuid()).stop();
+		return activeGames.remove(player.getUuid()) != null;
 	}
 }

src/main/resources/fabric.mod.json

@@ -1,7 +1,7 @@
 {
   "schemaVersion": 1,
   "id": "dp_snake",
-  "version": "1.0.0",
+  "version": "1.0.1",
 
   "name": "Snake",
   "description": "Allows you to play snake in Minecraft!",