void SetColours(PRNG rand, Material material)
{
var colChance = new Chance(rand);
var primaryA_HSV = Vector3.zero;
var secondaryA_HSV = Vector3.zero;
var primaryB_HSV = Vector3.zero;
var secondaryB_HSV = Vector3.zero;
// One light grey, one dark grey
if (colChance.Percent(25))
{
primaryA_HSV = new Vector3(0, 0, Mathf.Lerp(0.55f, 1, rand.ValueBiasUpper(.4f)));
secondaryA_HSV = primaryA_HSV + new Vector3(0, 0, rand.SignedValueBiasCentre(0.4f));
primaryB_HSV = new Vector3(0, 0, Mathf.Lerp(0f, 0.45f, rand.ValueBiasLower(.4f)));
secondaryB_HSV = primaryB_HSV + new Vector3(0, 0, rand.SignedValueBiasCentre(0.4f));
}
// One colour, one grey
else if (colChance.Percent(25))
{
// Pick grey, tending towards either very dark or very light
float greyValue = rand.ValueBiasExtremes(0.8f);
primaryA_HSV = new Vector3(0, 0, greyValue);
secondaryA_HSV = new Vector3(0, 0, greyValue + rand.SignedValueBiasCentre(0.5f) * .3f);
// If grey is dark, use bright colour, otherwise dark colour
float colourValue = (greyValue < 0.5f) ? rand.ValueBiasUpper(0.7f) : rand.ValueBiasLower(0.7f);
primaryB_HSV = new Vector3(rand.Value(), rand.Range(0.2f, 0.9f), Mathf.Lerp(0.1f, 0.9f, colourValue));
secondaryB_HSV = primaryB_HSV + rand.JiggleVector3(0.1f, 0.2f, 0.4f);
}
// Two similar colours
else if (colChance.Percent(25))
{
primaryA_HSV = new Vector3(rand.Range(0, 1), rand.Range(0.1f, 0.8f), rand.Range(0.2f, 0.8f));
secondaryA_HSV = primaryA_HSV + rand.JiggleVector3(0.1f, 0.2f, 0.3f);
primaryB_HSV = new Vector3(primaryA_HSV.x + rand.Range(0.05f, 0.1f), rand.Range(0.1f, 0.8f), rand.Range(0.2f, 0.8f));
secondaryB_HSV = primaryB_HSV + rand.JiggleVector3(0.1f, 0.2f, 0.3f);
}
// Two distinct colours
else if (colChance.Percent(25))
{
primaryA_HSV = new Vector3(rand.Value(), rand.Range(0.2f, 0.9f), rand.Range(0.1f, 0.9f));
secondaryA_HSV = primaryA_HSV + rand.JiggleVector3(0.1f, 0.2f, 0.3f);
primaryB_HSV = new Vector3((primaryA_HSV.x + rand.Range(0.2f, 0.8f)) % 1, rand.Range(0.2f, 0.9f), rand.Range(0.1f, 0.9f));
secondaryB_HSV = primaryB_HSV + rand.JiggleVector3(0.1f, 0.2f, 0.3f);
}
material.SetColor("_PrimaryColA", HSVToRGB(primaryA_HSV));
material.SetColor("_SecondaryColA", HSVToRGB(secondaryA_HSV));
material.SetColor("_PrimaryColB", HSVToRGB(primaryB_HSV));
material.SetColor("_SecondaryColB", HSVToRGB(secondaryB_HSV));
}
