🧬 Animal Genetics & Inherited Chiroptera Traits
| Trait Key | Target Attribute | Modifier Operation | Default Base | Min Bound | Max Bound | Mutation Rule |
|---|---|---|---|---|---|---|
scale | minecraft:generic.scale | ADD_VALUE | 0.0f | 0.75f | 1.30f | uniform(0.75f, 1.30f) |
movement_speed | minecraft:generic.movement_speed | ADD_MULTIPLIED_BASE | 0.0f | -0.04f | 0.08f | uniform(-0.04f, 0.08f) |
attack_damage | minecraft:generic.attack_damage | ADD_VALUE | 0.0f | 1.0f | 4.0f | uniform(1.0f, 4.0f) |
🧬 Genetics Registration via DasikLibrary
Better Bats registers custom genetic traits for EntityTypes.BAT inside BetterBatsFabric.java using EntityGeneticsRegistry.register:
java
EntityGeneticsRegistry.register(
EntityTypes.BAT,
new GeneticsConfig(
Map.of(
"scale", new TraitConfig(
"scale", "minecraft:generic.scale", "ADD_VALUE", 0.0f, 1.0f, 0.75f, 1.30f
),
"movement_speed", new TraitConfig(
"movement_speed", "minecraft:generic.movement_speed", "ADD_MULTIPLIED_BASE", 0.0f, 1.0f, -0.04f, 0.08f
),
"attack_damage", new TraitConfig(
"attack_damage", "minecraft:generic.attack_damage", "ADD_VALUE", 0.0f, 1.0f, 1.0f, 4.0f
)
),
Map.of(
"default", Map.of(
"scale", new MutationRule("uniform", 0.75f, 1.30f),
"movement_speed", new MutationRule("uniform", -0.04f, 0.08f),
"attack_damage", new MutationRule("uniform", 1.0f, 4.0f)
)
)
)
);🦇 Trait Effects & Impact
- Scale / Wingspan (
scale):- Directly scales the physical model rendering size and collision bounding box of the bat.
- Range: $0.75\times$ (dwarf micro-bat) to $1.30\times$ (giant megabat / flying fox).
- Movement Speed (
movement_speed):- Modifies base flight locomotion velocity by $-4%$ up to $+8%$.
- Attack Damage (
attack_damage):- Multiplies predatory dive-bomb damage against Silverfish and Endermites: $$\text{Pest Damage} = 10.0 \times \text{attack_damage_trait}$$
🔄 Automatic Genetics Roll & Persistence
When a bat ticks for the first time without genetics (!DasikAnimalGeneticsAPI.hasGenetics(self)), BatMixin.betterbats$onCustomServerAiStep automatically rolls its genetic profile and applies attribute modifiers:
java
if (!DasikAnimalGeneticsAPI.hasGenetics(self)) {
DasikAnimalGeneticsAPI.rollStats(self, "better-bats:bat");
GeneticsEngine.applyGeneticsModifiers(self);
}Genetics data is stored safely in vanilla entity NBT compound tags (EntityGenetics), ensuring total uninstallation safety without corrupting world saves.