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102 lines
3.5 KiB
102 lines
3.5 KiB
using System.Collections;
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using System.Collections.Generic;
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using UnityEngine;
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using System.Linq;
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/// <summary>
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/// Class which defines blocks around the level
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/// </summary>
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[RequireComponent(typeof(BoxCollider))]
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public class Block : MonoBehaviour
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{
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#region Inspector Fields
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[SerializeField]
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[Tooltip("Offset from the top of the block from which a character should stand")]
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private Vector3 VisualOffset = Vector3.zero;
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[SerializeField]
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[Tooltip("Can this type of block be walked on")]
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private bool _isWalkable = true;
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#endregion InspectorFields
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#region ReadOnly Properties
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/// <summary>
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/// Blocks position in global space
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/// </summary>
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public Vector3 position { get { return transform.position; } }
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/// <summary>
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/// Position character should stand in global space
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/// </summary>
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public Vector3 VisualPosition { get { return position + VisualOffset + Vector3.up * 0.5f; } }
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#endregion ReadOnly Properties
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#region Public Functions
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/// <summary>
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/// Is a block valid to walk on
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/// </summary>
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/// <param name="layerMask">Layers to check for when checking for blocks above</param>
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/// <returns></returns>
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public bool isWalkable(LayerMask layerMask)
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{
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//checks if there is no block above this one and that this is tagged as walkable
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return (_isWalkable && !isBlockAtPosition(position + Vector3.up, 1, layerMask));
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}
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#endregion Public Functions
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#region Static Functions
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/// <summary>
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/// Checks if there is a block at supplied position
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/// </summary>
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/// <param name="position">position to check at</param>
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/// <param name="Scale">Scale of block. (should be 1)</param>
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/// <param name="layerMask">Layers to check on</param>
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/// <param name="hit">Block hit</param>
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/// <returns>if a block is at position</returns>
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public static bool isBlockAtPosition(Vector3 position, float Scale, LayerMask layerMask, out Block hit)
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{
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//Turn scale into halfextent and shrink a bit so it doesn't hit bordering blocks
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Vector3 halfExtent = Vector3.one * ((Scale - 0.1f) / 2);
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//Get every collider which is at position
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Collider[] cols = Physics.OverlapBox(position, halfExtent, Quaternion.identity, layerMask);
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//Filter colliders for only GameObjects with an Block component
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Block[] blocks = cols.Where(p => p.GetComponent<Block>() != null).Select(p => p.GetComponent<Block>()).ToArray();
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//Draw cube, for visuals
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DebugExtensions.DrawCube(position, halfExtent, Color.cyan, 1, false);
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//if didn't hit anyblocks return false
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if (blocks.Length == 0)
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{
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hit = null;
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return false;
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}
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else
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{
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//else get the closest block to disered position, (in case we hit mulitple blocks)
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hit = Utility.minBy(blocks, p => Vector3.Distance(p.transform.position, position));
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return true;
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}
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}
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/// <summary>
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/// Checks if there is a block at supplied position
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/// </summary>
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/// <param name="position">position to check at</param>
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/// <param name="Scale">Scale of block. (should be 1)</param>
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/// <param name="layerMask">Layers to check on</param>
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/// <returns>if a block is at position</returns>
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public static bool isBlockAtPosition(Vector3 position, float scale, LayerMask layerMask)
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{
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//Return Overloaded function above
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Block hit;
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return (isBlockAtPosition(position, scale, layerMask, out hit));
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}
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#endregion
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}
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