using System.Collections;
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using System.Collections.Generic;
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using System.Linq;
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using UnityEngine;
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using UnityEngine.Tilemaps;
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using static UnityEngine.RuleTile.TilingRuleOutput;
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[CreateAssetMenu(fileName = "CustomRuleTile", menuName = "2D/Tiles/Custom Rule Tile")]
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public class CustomRuleTile : RuleTile<CustomRuleTile.Neighbor>
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{
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public List<TileBase> siblings = new List<TileBase>();
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private Dictionary<int, bool> ruleMatchCache = new Dictionary<int, bool>();
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public class Neighbor : RuleTile.TilingRule.Neighbor
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{
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public const int Sibling = 3;
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}
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public override bool RuleMatch(int neighbor, TileBase tile)
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{
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// Create a unique key for caching based on neighbor and tile
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int cacheKey = neighbor;
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if (tile != null)
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{
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cacheKey = cacheKey * 23 + tile.GetInstanceID(); // Use prime number to reduce collisions
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}
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// Check if we have a cached result
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if (ruleMatchCache.TryGetValue(cacheKey, out bool cachedResult))
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{
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return cachedResult;
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}
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// If not cached, compute the result
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bool result;
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// Handle null tiles
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if (tile == null)
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{
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result = neighbor == RuleTile.TilingRule.Neighbor.NotThis;
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}
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// Always allow connections to siblings or self
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else if (tile == this || siblings.Contains(tile))
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{
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result = neighbor == RuleTile.TilingRule.Neighbor.This;
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}
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// For Sibling type explicitly
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else if (neighbor == Neighbor.Sibling)
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{
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result = siblings.Contains(tile);
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}
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// For any other case, use base behavior
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else
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{
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result = base.RuleMatch(neighbor, tile);
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}
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// Cache the result
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ruleMatchCache[cacheKey] = result;
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return result;
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}
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// Add method to clear cache when needed (e.g., when rules change or on chunk unload)
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public void ClearRuleCache()
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{
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ruleMatchCache.Clear();
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}
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// Override RefreshTile to clear cache for that specific tile position
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public override void RefreshTile(Vector3Int position, ITilemap tilemap)
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{
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ClearRuleCache(); // Clear cache before refresh to ensure proper updates
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base.RefreshTile(position, tilemap);
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}
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}
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