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|
use std::{
collections::HashMap,
io::{self, Cursor, Write},
};
use azalea_buf::{AzBuf, BufReadError};
use azalea_core::{attribute_modifier_operation::AttributeModifierOperation, bitset::FixedBitSet};
use azalea_inventory::components::AttributeModifier;
use azalea_registry::{
builtin::{Attribute, MobEffect},
identifier::Identifier,
};
/// Data about an active mob effect.
#[derive(AzBuf, Clone, Debug, Default, PartialEq)]
pub struct MobEffectData {
/// The effect's amplifier level, starting at 0 if present.
#[var]
pub amplifier: i32,
/// The effect's duration in ticks.
#[var]
pub duration: i32,
pub flags: MobEffectFlags,
}
#[derive(Clone, Debug, Default, PartialEq)]
pub struct MobEffectFlags {
pub ambient: bool,
pub show_particles: bool,
pub show_icon: bool,
pub blend: bool,
}
impl AzBuf for MobEffectFlags {
fn azalea_read(buf: &mut Cursor<&[u8]>) -> Result<Self, BufReadError> {
let bitset = FixedBitSet::<8>::azalea_read(buf)?;
let ambient = bitset.index(0);
let show_particles = bitset.index(1);
let show_icon = bitset.index(2);
let blend = bitset.index(3);
Ok(Self {
ambient,
show_particles,
show_icon,
blend,
})
}
fn azalea_write(&self, buf: &mut impl Write) -> io::Result<()> {
let mut bitset = FixedBitSet::<8>::new();
if self.ambient {
bitset.set(0);
}
if self.show_particles {
bitset.set(1);
}
if self.show_icon {
bitset.set(2);
}
if self.blend {
bitset.set(3);
}
bitset.azalea_write(buf)
}
}
/// The active mob effects on an entity.
#[cfg_attr(feature = "bevy_ecs", derive(bevy_ecs::component::Component))]
#[derive(Clone, Debug, Default)]
pub struct ActiveEffects(pub HashMap<MobEffect, MobEffectData>);
impl ActiveEffects {
pub fn insert(&mut self, effect: MobEffect, data: MobEffectData) -> Option<MobEffectData> {
self.0.insert(effect, data)
}
pub fn remove(&mut self, effect: MobEffect) -> Option<MobEffectData> {
self.0.remove(&effect)
}
/// Get the amplifier level for the effect, starting at 0.
pub fn get_level(&self, effect: MobEffect) -> Option<i32> {
self.0.get(&effect).map(|data| data.amplifier)
}
pub fn get(&self, effect: MobEffect) -> Option<&MobEffectData> {
self.0.get(&effect)
}
/// Returns the amplifier for dig speed (haste / conduit power), if present.
pub fn get_dig_speed_amplifier(&self) -> Option<i32> {
let haste_level = self
.get_level(MobEffect::Haste)
.map(|level| level + 1)
.unwrap_or_default();
let conduit_power_level = self
.get_level(MobEffect::ConduitPower)
.map(|level| level + 1)
.unwrap_or_default();
let effect_plus_one = i32::max(haste_level, conduit_power_level);
if effect_plus_one > 0 {
Some(effect_plus_one - 1)
} else {
None
}
}
}
pub fn attribute_modifier_for_effect(id: MobEffect) -> Option<(Attribute, AttributeTemplate)> {
Some(match id {
MobEffect::Speed => (
Attribute::MovementSpeed,
AttributeTemplate::new(
"effect.speed",
0.2f32 as f64,
AttributeModifierOperation::AddMultipliedTotal,
),
),
MobEffect::Slowness => (
Attribute::MovementSpeed,
AttributeTemplate::new(
"effect.slowness",
-0.15f32 as f64,
AttributeModifierOperation::AddMultipliedTotal,
),
),
MobEffect::Haste => (
Attribute::AttackSpeed,
AttributeTemplate::new(
"effect.haste",
0.1f32 as f64,
AttributeModifierOperation::AddMultipliedTotal,
),
),
MobEffect::MiningFatigue => (
Attribute::AttackSpeed,
AttributeTemplate::new(
"effect.mining_fatigue",
-0.1f32 as f64,
AttributeModifierOperation::AddMultipliedTotal,
),
),
MobEffect::Strength => (
Attribute::AttackDamage,
AttributeTemplate::new("effect.strength", 3.0, AttributeModifierOperation::AddValue),
),
MobEffect::JumpBoost => (
Attribute::SafeFallDistance,
AttributeTemplate::new(
"effect.jump_boost",
1.0,
AttributeModifierOperation::AddValue,
),
),
MobEffect::Invisibility => (
Attribute::WaypointTransmitRange,
AttributeTemplate::new(
"effect.waypoint_transmit_range_hide",
-1.0,
AttributeModifierOperation::AddMultipliedTotal,
),
),
MobEffect::Weakness => (
Attribute::AttackDamage,
AttributeTemplate::new(
"effect.weakness",
-4.0,
AttributeModifierOperation::AddValue,
),
),
MobEffect::HealthBoost => (
Attribute::MaxHealth,
AttributeTemplate::new(
"effect.health_boost",
4.0,
AttributeModifierOperation::AddValue,
),
),
MobEffect::Absorption => (
Attribute::MaxAbsorption,
AttributeTemplate::new(
"effect.absorption",
4.0,
AttributeModifierOperation::AddValue,
),
),
MobEffect::Luck => (
Attribute::Luck,
AttributeTemplate::new("effect.luck", 1.0, AttributeModifierOperation::AddValue),
),
MobEffect::Unluck => (
Attribute::Luck,
AttributeTemplate::new("effect.unluck", -1.0, AttributeModifierOperation::AddValue),
),
_ => return None,
})
}
pub struct AttributeTemplate(AttributeModifier);
impl AttributeTemplate {
pub fn new(id: &str, amount: f64, operation: AttributeModifierOperation) -> Self {
Self(AttributeModifier {
id: Identifier::from(id),
amount,
operation,
})
}
pub fn create(self, amplifier: i32) -> AttributeModifier {
AttributeModifier {
id: self.0.id,
amount: self.0.amount * (amplifier + 1) as f64,
operation: self.0.operation,
}
}
}
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