Searches Noita's terrain generation wang tiles for a specific pixel color. These trigger pixels are often used to spawn items, entities, etc. By default this script will look for pixels which are linked to SpawnApparition(), which can spawn the Kummitus (player ghost) entity

SearchWangTiles.ps1

Add-Type -AssemblyName System.Drawing

function Get-WangTileSpawnTriggers {
    [CmdletBinding()]
    param(
        [Parameter()]
        [string]
        # Path to your unpacked Nolla_Games_Noita\data directory
        $Path = "$env:USERPROFILE\AppData\LocalLow\Nolla_Games_Noita\data",
        

        [Parameter()]
        [System.Drawing.Color]
        # Defaults to 00FF5A, the pixel spawn trigger for Kummitus / the player ghost.
        # Supply a replacement in a similar format if you want to search for other spawn triggers
        $TargetColor = [System.Drawing.Color]::FromArgb(0, 0xff, 0x5a)
    )

    function Measure-SpawnTrigger {
        [CmdletBinding()]
        param(
            [Parameter(Mandatory)]
            [string]
            $Path,

            [Parameter(Mandatory)]
            [System.Drawing.Color]
            $Color
        )

        $triggers = 0
        $bitmap = [System.Drawing.Bitmap]::FromFile($Path)
        try {
            for ($x = 0; $x -lt $bitmap.Width; $x++) {
                for ($y = 0; $y -lt $bitmap.Height; $y++) {
                    $pixel = $bitmap.GetPixel($x, $y)
                    
                    if ($pixel.ToArgb() -eq $Color.ToArgb()) {
                        $triggers++
                    }
                }
            }
        }
        finally {
            $bitmap.Dispose()
        }

        $triggers
    }

    Join-Path $Path -ChildPath 'wang_tiles' |
        Get-ChildItem -Filter *.png -File |
        ForEach-Object {
            [PSCustomObject]@{
                Biome                    = $_.Name
                ApparitionSpawnLocations = Measure-SpawnTrigger -Path $_.FullName -Color $TargetColor
            }
        }
}

Get-WangTileSpawnTriggers | Sort-Object -Property ApparitionSpawnLocations -Descending