Magical gene / lines and strokes

Brindlelace

A dark reticulated net rather than solid patching - short dashes and closed loops with the coat showing through between them, densest at the neck and shoulder and closing to solid below the knee.

What it can come out as

Outcome	Carrying
Brindlelace	`Bnl/Bnl` · `Bnl/n`
Wild type	`n/n`

How each one is actually drawn - region by region, and the layers it is built from - is on the coding tab.

Crossing two of them

Finding one

About 1 in 1,250 wild horses is born showing this. That is the whole of the supply: catch one, or make one with the carrot below. Breeds set their own pools and a breed built around this gene will carry it far more often than the wild population does.

Wild pair	Shows as	How often
`Bnl/Bnl`	Brindlelace	0.004% — 1 in 25,000
`Bnl/n`	Brindlelace	0.076% — 1 in 1,316
`n/n`	Wild type	99.92%

Its gene carrot

The file

common/src/main/resources/horsegenetics/genes/brindlelace.json — a data-driven gene, not a Java class. It is listed in the index.json beside it and registered by Genes' class initialiser at startup.

Key	`horsegenetics.brindlelace`
Phase	magical — it adds signed colour in phase 3, after the pigment has resolved
Priority	368 — where it sits in the one `(priority, key)` paint order
Alleles	`Bnl` · `n`
Varies per horse	2 values drawn once off the expressing allele copy, so a foal that inherits the copy inherits the look
Built from	AXIS, PARTS, STROKES, TOWARD

What it paints

Each outcome, described the way the gene file describes it, and then the layers that draw it in the order they are painted. The prose is the part a reader checks a bake against; the list underneath is what the engine actually did.

Brindlelace

Half the horse is dark, but as a net: short dashes and irregular closed loops with soft edges, enclosing cells of base coat. The grain shifts zone to zone - near-vertical down the neck, oblique across the shoulder, along the rib arcs on the barrel, radiating from the point of hip. Density falls off backward and downward, so the belly and flank open right up, and closes the other way on the legs until the knee and hock are solid. Ears solid; mane and tail solid, full length.

the net over the body, thinning backward and down — STROKES × AXIS × AXIS, painted with TOWARD
the net closing to solid below the knee and hock — PARTS × STROKES × AXIS × PARTS, painted with TOWARD
solid ears, mane and tail — PARTS, painted with TOWARD

Wild type

No lace.

Paints nothing.