func vpSpawn(size int, start int, mt int, parent VisualPredator, conditions ConditionParams, timestamp string) []VisualPredator {
pop := []VisualPredator{}
for i := 0; i < size; i++ {
agent := parent
agent.uuid = uuid()
agent.description = AgentDescription{AgentType: "vp", AgentNum: start + i, ParentUUID: parent.uuid, CreatedMT: mt, CreatedAT: timestamp}
agent.pos = parent.pos
if conditions.VpAgeing {
if conditions.RandomAges {
agent.lifespan = calc.RandIntIn(int(float64(conditions.VpLifespan)*0.7), int(float64(conditions.VpLifespan)*1.3))
} else {
agent.lifespan = conditions.VpLifespan
}
} else {
agent.lifespan = 99999
}
agent.movS = parent.movS
agent.movA = parent.movA
agent.𝚯 = rand.Float64() * (2 * math.Pi)
agent.dir = parent.dir
agent.tr = parent.tr
agent.vsr = parent.vsr
agent.hunger = conditions.VpSexualRequirement + 1
agent.fertility = 1
agent.gravid = false
agent.τ = colour.RandRGBClamped(parent.τ, 0.5) // random offset (up to 50%) deviation from parent's target colour
agent.ετ = conditions.VpVbε
pop = append(pop, agent)
}
return pop
}
// For now, mutation only affects colouration, but could be extended to affect any other parameter.
func (c *ColourPolymorphicPrey) mutation(Mf float64) {
c.colouration = colour.RandRGBClamped(c.colouration, Mf)
}