VulCode

Unity LayerMask

Tick layers and get the bitmask for Physics.Raycast plus a line of C#.

SCP:SL, Steam and Unity tools
Category
SCP:SL, Steam and Unity
Price
free

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Everything is calculated in your browser. Nothing you type is sent to our server.

How to use it in three steps

The tool as a schematic with this page's example. Each step's number stands where you take it: in the fields, at the result or outside the tool.

Unity LayerMask
What you enter
Layers 0 (Default), 8 (Player) and 9 (Enemy)

  1. Tick the layers the raycast should see.

What you get
LayerMask mask = LayerMask.GetMask("Default", "Player", "Enemy"); 769 = 0x00000301

  1. Read the mask number.

  2. Copy the C# line with the LayerMask.

Six sets of layers and their mask

Physics.Raycast takes a mask, not a layer number: layer n is 1 << n. Layer 31 is the sign bit, which is why an int with it comes out negative, and a full mask is -1.

LayersExpected maskWhat the tool returnsResult
Layers0, 8, 9the example from the tool's description
Expected mask(1 << 0) | (1 << 8) | (1 << 9) = 769
What the tool returns769 (0x00000301), GetMask with 3 names
As expected
Layers2Ignore Raycast only
Expected mask(1 << 2) = 4
What the tool returns4 (0x00000004), GetMask with 1 name
As expected
Layersall but 2everything but Ignore Raycast, the Invert button
Expected mask~(1 << 2) = -5
What the tool returns-5 (0xFFFFFFFB), GetMask with 31 names
As expected
Layers31the last layer is the sign bit
Expected mask(1 << 31) = -2147483648
What the tool returns-2147483648 (0x80000000), GetMask with 1 name
As expected
Layers0-31all 32 layers
Expected mask~0 = -1
What the tool returns-1 (0xFFFFFFFF), GetMask with 32 names
As expected
Layers-nothing ticked
Expected mask0 = 0
What the tool returns0 (0x00000000)
As expected

6 of 6 cases as expected

Questions

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