113 lines
4.6 KiB
C#
113 lines
4.6 KiB
C#
using System.Collections.Generic;
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using UnityEngine;
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namespace AibisDream
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{
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/// <summary>
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/// 放置验证器实现
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/// 负责验证形状是否可以放置在指定位置
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/// </summary>
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public class PlacementValidator : IPlacementValidator
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{
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/// <summary>
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/// 检查形状是否可以放置在指定位置
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/// </summary>
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/// <param name="grid">网格系统</param>
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/// <param name="shape">要放置的形状</param>
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/// <param name="gridX">网格X坐标（形状左下角位置）</param>
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/// <param name="gridY">网格Y坐标（形状左下角位置）</param>
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/// <returns>放置验证结果</returns>
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public PlacementResult CanPlace(IBlockPuzzleGrid grid, IBlockShape shape, int gridX, int gridY)
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{
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if (grid == null || shape == null)
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{
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return PlacementResult.InvalidPosition;
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}
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// 获取形状的所有格子位置（相对坐标，基于形状的本地坐标系）
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Vector2Int[] blockPositions = shape.GetBlockPositions();
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if (blockPositions == null || blockPositions.Length == 0)
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{
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return PlacementResult.InvalidPosition;
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}
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// 形状的坐标系统：
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// - GetBlockPositions() 返回的坐标中，(0, 0) 是形状的左上角（在pattern数组中）
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// - pattern[i, j] 中，i 是 x（从左到右），j 是 y（从上到下，j=0 是顶部）
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// - gridX, gridY 是形状左下角在网格中的位置
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// - 需要将形状的相对坐标转换为网格坐标
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foreach (var blockPos in blockPositions)
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{
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// 将形状的相对坐标转换为网格坐标
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// 形状的 (0, 0) 对应网格的 (gridX, gridY + shape.Height - 1)
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// 形状的 (i, j) 对应网格的 (gridX + i, gridY + shape.Height - 1 - j)
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int gridCellX = gridX + blockPos.x;
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int gridCellY = gridY + shape.Height - 1 - blockPos.y;
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// 检查是否超出边界
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if (!grid.IsValidPosition(gridCellX, gridCellY))
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{
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return PlacementResult.OutOfBounds;
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}
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// 检查是否与已有块重叠
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if (!grid.IsCellEmpty(gridCellX, gridCellY))
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{
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return PlacementResult.Overlap;
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}
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}
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return PlacementResult.Success;
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}
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/// <summary>
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/// 检查形状是否可以放置在指定位置（详细版本）
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/// </summary>
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/// <param name="grid">网格系统</param>
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/// <param name="shape">要放置的形状</param>
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/// <param name="gridX">网格X坐标（形状左下角位置）</param>
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/// <param name="gridY">网格Y坐标（形状左下角位置）</param>
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/// <param name="failureReason">失败原因（如果返回false）</param>
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/// <returns>是否可以放置</returns>
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public bool CanPlaceDetailed(IBlockPuzzleGrid grid, IBlockShape shape, int gridX, int gridY, out PlacementResult failureReason)
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{
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failureReason = CanPlace(grid, shape, gridX, gridY);
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return failureReason == PlacementResult.Success;
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}
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/// <summary>
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/// 获取形状在指定位置的所有占用格子坐标
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/// </summary>
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/// <param name="shape">形状</param>
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/// <param name="gridX">网格X坐标（形状左下角位置）</param>
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/// <param name="gridY">网格Y坐标（形状左下角位置）</param>
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/// <returns>占用格子的网格坐标数组</returns>
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public (int x, int y)[] GetOccupiedCells(IBlockShape shape, int gridX, int gridY)
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{
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if (shape == null)
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{
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return new (int x, int y)[0];
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}
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Vector2Int[] blockPositions = shape.GetBlockPositions();
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if (blockPositions == null || blockPositions.Length == 0)
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{
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return new (int x, int y)[0];
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}
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List<(int x, int y)> occupiedCells = new List<(int x, int y)>();
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foreach (var blockPos in blockPositions)
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{
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// 将形状的相对坐标转换为网格坐标（左下角为基准）
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int gridCellX = gridX + blockPos.x;
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int gridCellY = gridY + shape.Height - 1 - blockPos.y;
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occupiedCells.Add((gridCellX, gridCellY));
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}
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return occupiedCells.ToArray();
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}
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}
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}
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