58 lines
2.6 KiB
C#
58 lines
2.6 KiB
C#
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//#define MB_DEBUG
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using UnityEngine;
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using static MenteBacata.ScivoloCharacterController.Internal.GeometryCasts;
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namespace MenteBacata.ScivoloCharacterController.Internal
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{
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public static class StepDetectionUtils
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{
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/// <summary>
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/// Checks if there is floor above a certain point by casting down a sphere from above the specified point.
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/// </summary>
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public static bool CheckFloorAbovePoint(Vector3 point, float capsuleRadius, float minFloorUp, Vector3 upDirection,
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LayerMask collisionMask, Collider colliderToIgnore, out RaycastHit floorHit)
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{
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const float probeRadiusOverCapsuleRadius = 0.25f;
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const float verticalOffsetOverCapsuleRadius = 0.6f;
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float verticalOffset = verticalOffsetOverCapsuleRadius * capsuleRadius;
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float probeRadius = probeRadiusOverCapsuleRadius * capsuleRadius;
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float centerToPointDistance = verticalOffset + probeRadius;
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Vector3 center = point + centerToPointDistance * upDirection;
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if (SphereCast(center, probeRadius, -upDirection, centerToPointDistance, collisionMask, colliderToIgnore, out floorHit, out bool hasInitialOverlap))
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{
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return !hasInitialOverlap && Math.Dot(floorHit.normal, upDirection) > minFloorUp;
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}
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return false;
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}
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/// <summary>
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/// Checks if there is enough space above a point for the capsule to partially fit.
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/// </summary>
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public static bool CheckSpaceAbovePoint(Vector3 point, float capsuleRadius, float capsuleHeight, Vector3 upDirection,
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LayerMask collisionMask, Collider colliderToIgnore)
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{
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const float probeRadiusOverCapsuleRadius = 0.8f;
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const float verticalOffsetOverCapsuleRadius = 0.4f;
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float verticalOffset = verticalOffsetOverCapsuleRadius * capsuleRadius;
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float probeRadius = probeRadiusOverCapsuleRadius * capsuleRadius;
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float probeHeight = capsuleHeight - verticalOffset;
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// Not needed if 2 * probe radius + vertical offset <= 2 * capsule radius.
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/*if (probeHeight < 2f * probeRadius)
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probeHeight = 2f * probeRadius;*/
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float centerToPointDistance = verticalOffset + probeRadius;
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Vector3 lowerCenter = point + centerToPointDistance * upDirection;
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Vector3 upperCenter = lowerCenter + (probeHeight - 2f * probeRadius) * upDirection;
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return !OverlapUtils.CheckCapsuleOverlap(lowerCenter, upperCenter, probeRadius, collisionMask, colliderToIgnore);
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}
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}
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}
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