veloren/common/src/comp/projectile.rs
2021-12-23 13:04:24 +01:00

472 lines
16 KiB
Rust

use crate::{
combat::{
Attack, AttackDamage, AttackEffect, CombatBuff, CombatBuffStrength, CombatEffect,
CombatRequirement, Damage, DamageKind, DamageSource, GroupTarget, Knockback, KnockbackDir,
},
comp::{buff::BuffKind, item::Reagent},
uid::Uid,
Explosion, RadiusEffect,
};
use serde::{Deserialize, Serialize};
use specs::Component;
use specs_idvs::IdvStorage;
use std::time::Duration;
#[derive(Clone, Debug, Serialize, Deserialize)]
pub enum Effect {
Attack(Attack),
Explode(Explosion),
Vanish,
Stick,
Possess,
Bonk, // Knock/dislodge/change objects on hit
}
#[derive(Clone, Debug, Serialize, Deserialize)]
pub struct Projectile {
// TODO: use SmallVec for these effects
pub hit_solid: Vec<Effect>,
pub hit_entity: Vec<Effect>,
/// Time left until the projectile will despawn
pub time_left: Duration,
pub owner: Option<Uid>,
/// Whether projectile collides with entities in the same group as its
/// owner
pub ignore_group: bool,
/// Whether the projectile is sticky
pub is_sticky: bool,
/// Whether the projectile should use a point collider
pub is_point: bool,
}
impl Component for Projectile {
type Storage = IdvStorage<Self>;
}
#[derive(Clone, Copy, Debug, PartialEq, Serialize, Deserialize)]
pub enum ProjectileConstructor {
Arrow {
damage: f32,
knockback: f32,
energy_regen: f32,
},
Fireball {
damage: f32,
radius: f32,
energy_regen: f32,
min_falloff: f32,
},
Frostball {
damage: f32,
radius: f32,
min_falloff: f32,
},
NecroticSphere {
damage: f32,
radius: f32,
min_falloff: f32,
},
Possess,
ClayRocket {
damage: f32,
radius: f32,
knockback: f32,
min_falloff: f32,
},
Snowball {
damage: f32,
radius: f32,
min_falloff: f32,
},
ExplodingPumpkin {
damage: f32,
radius: f32,
knockback: f32,
min_falloff: f32,
},
}
impl ProjectileConstructor {
pub fn create_projectile(
self,
owner: Option<Uid>,
crit_chance: f32,
crit_mult: f32,
buff_strength: f32,
) -> Projectile {
use ProjectileConstructor::*;
match self {
Arrow {
damage,
knockback,
energy_regen,
} => {
let knockback = AttackEffect::new(
Some(GroupTarget::OutOfGroup),
CombatEffect::Knockback(Knockback {
strength: knockback,
direction: KnockbackDir::Away,
}),
)
.with_requirement(CombatRequirement::AnyDamage);
let energy = AttackEffect::new(None, CombatEffect::EnergyReward(energy_regen))
.with_requirement(CombatRequirement::AnyDamage);
let buff = CombatEffect::Buff(CombatBuff {
kind: BuffKind::Bleeding,
dur_secs: 10.0,
strength: CombatBuffStrength::DamageFraction(0.1 * buff_strength),
chance: 0.1,
});
let damage = AttackDamage::new(
Damage {
source: DamageSource::Projectile,
kind: DamageKind::Piercing,
value: damage,
},
Some(GroupTarget::OutOfGroup),
)
.with_effect(buff);
let attack = Attack::default()
.with_damage(damage)
.with_crit(crit_chance, crit_mult)
.with_effect(energy)
.with_effect(knockback)
.with_combo_increment();
Projectile {
hit_solid: vec![Effect::Stick, Effect::Bonk],
hit_entity: vec![Effect::Attack(attack), Effect::Vanish],
time_left: Duration::from_secs(15),
owner,
ignore_group: true,
is_sticky: true,
is_point: true,
}
},
Fireball {
damage,
radius,
energy_regen,
min_falloff,
} => {
let energy = AttackEffect::new(None, CombatEffect::EnergyReward(energy_regen))
.with_requirement(CombatRequirement::AnyDamage);
let buff = CombatEffect::Buff(CombatBuff {
kind: BuffKind::Burning,
dur_secs: 5.0,
strength: CombatBuffStrength::DamageFraction(0.1 * buff_strength),
chance: 0.1,
});
let damage = AttackDamage::new(
Damage {
source: DamageSource::Explosion,
kind: DamageKind::Energy,
value: damage,
},
Some(GroupTarget::OutOfGroup),
)
.with_effect(buff);
let attack = Attack::default()
.with_damage(damage)
.with_crit(crit_chance, crit_mult)
.with_effect(energy)
.with_combo_increment();
let explosion = Explosion {
effects: vec![
RadiusEffect::Attack(attack),
RadiusEffect::TerrainDestruction(2.0),
],
radius,
reagent: Some(Reagent::Red),
min_falloff,
};
Projectile {
hit_solid: vec![Effect::Explode(explosion.clone()), Effect::Vanish],
hit_entity: vec![Effect::Explode(explosion), Effect::Vanish],
time_left: Duration::from_secs(10),
owner,
ignore_group: true,
is_sticky: true,
is_point: true,
}
},
Frostball {
damage,
radius,
min_falloff,
} => {
let damage = AttackDamage::new(
Damage {
source: DamageSource::Explosion,
kind: DamageKind::Energy,
value: damage,
},
Some(GroupTarget::OutOfGroup),
);
let attack = Attack::default()
.with_damage(damage)
.with_crit(crit_chance, crit_mult)
.with_combo_increment();
let explosion = Explosion {
effects: vec![RadiusEffect::Attack(attack)],
radius,
reagent: Some(Reagent::White),
min_falloff,
};
Projectile {
hit_solid: vec![Effect::Explode(explosion.clone()), Effect::Vanish],
hit_entity: vec![Effect::Explode(explosion), Effect::Vanish],
time_left: Duration::from_secs(10),
owner,
ignore_group: true,
is_sticky: true,
is_point: true,
}
},
NecroticSphere {
damage,
radius,
min_falloff,
} => {
let damage = AttackDamage::new(
Damage {
source: DamageSource::Explosion,
kind: DamageKind::Energy,
value: damage,
},
Some(GroupTarget::OutOfGroup),
);
let attack = Attack::default()
.with_damage(damage)
.with_crit(crit_chance, crit_mult)
.with_combo_increment();
let explosion = Explosion {
effects: vec![RadiusEffect::Attack(attack)],
radius,
reagent: Some(Reagent::Purple),
min_falloff,
};
Projectile {
hit_solid: vec![Effect::Explode(explosion.clone()), Effect::Vanish],
hit_entity: vec![Effect::Explode(explosion), Effect::Vanish],
time_left: Duration::from_secs(10),
owner,
ignore_group: true,
is_sticky: true,
is_point: true,
}
},
Possess => Projectile {
hit_solid: vec![Effect::Stick],
hit_entity: vec![Effect::Stick, Effect::Possess],
time_left: Duration::from_secs(10),
owner,
ignore_group: false,
is_sticky: true,
is_point: true,
},
ClayRocket {
damage,
radius,
knockback,
min_falloff,
} => {
let knockback = AttackEffect::new(
Some(GroupTarget::OutOfGroup),
CombatEffect::Knockback(Knockback {
strength: knockback,
direction: KnockbackDir::Away,
}),
)
.with_requirement(CombatRequirement::AnyDamage);
let damage = AttackDamage::new(
Damage {
source: DamageSource::Explosion,
kind: DamageKind::Energy,
value: damage,
},
Some(GroupTarget::OutOfGroup),
);
let attack = Attack::default()
.with_damage(damage)
.with_crit(crit_chance, crit_mult)
.with_effect(knockback);
let explosion = Explosion {
effects: vec![
RadiusEffect::Attack(attack),
RadiusEffect::TerrainDestruction(5.0),
],
radius,
reagent: Some(Reagent::Red),
min_falloff,
};
Projectile {
hit_solid: vec![Effect::Explode(explosion.clone()), Effect::Vanish],
hit_entity: vec![Effect::Explode(explosion), Effect::Vanish],
time_left: Duration::from_secs(10),
owner,
ignore_group: true,
is_sticky: true,
is_point: true,
}
},
Snowball {
damage,
radius,
min_falloff,
} => {
let damage = AttackDamage::new(
Damage {
source: DamageSource::Explosion,
kind: DamageKind::Energy,
value: damage,
},
Some(GroupTarget::OutOfGroup),
);
let attack = Attack::default()
.with_damage(damage)
.with_crit(crit_chance, crit_mult);
let explosion = Explosion {
effects: vec![RadiusEffect::Attack(attack)],
radius,
reagent: Some(Reagent::White),
min_falloff,
};
Projectile {
hit_solid: vec![],
hit_entity: vec![Effect::Explode(explosion), Effect::Vanish],
time_left: Duration::from_secs(120),
owner,
ignore_group: true,
is_sticky: false,
is_point: false,
}
},
ExplodingPumpkin {
damage,
radius,
knockback,
min_falloff,
} => {
let knockback = AttackEffect::new(
Some(GroupTarget::OutOfGroup),
CombatEffect::Knockback(Knockback {
strength: knockback,
direction: KnockbackDir::Away,
}),
)
.with_requirement(CombatRequirement::AnyDamage);
let buff = AttackEffect::new(
Some(GroupTarget::OutOfGroup),
CombatEffect::Buff(CombatBuff {
kind: BuffKind::Burning,
dur_secs: 5.0,
strength: CombatBuffStrength::DamageFraction(0.2 * buff_strength),
chance: 1.0,
}),
)
.with_requirement(CombatRequirement::AnyDamage);
let damage = AttackDamage::new(
Damage {
source: DamageSource::Explosion,
kind: DamageKind::Energy,
value: damage,
},
Some(GroupTarget::OutOfGroup),
);
let attack = Attack::default()
.with_damage(damage)
.with_crit(crit_chance, crit_mult)
.with_effect(knockback)
.with_effect(buff);
let explosion = Explosion {
effects: vec![
RadiusEffect::Attack(attack),
RadiusEffect::TerrainDestruction(5.0),
],
radius,
reagent: Some(Reagent::Red),
min_falloff,
};
Projectile {
hit_solid: vec![Effect::Explode(explosion.clone()), Effect::Vanish],
hit_entity: vec![Effect::Explode(explosion), Effect::Vanish],
time_left: Duration::from_secs(10),
owner,
ignore_group: true,
is_sticky: true,
is_point: true,
}
},
}
}
// TODO: split this to three methods per stat
#[must_use]
pub fn modified_projectile(mut self, power: f32, regen: f32, range: f32) -> Self {
use ProjectileConstructor::*;
match self {
Arrow {
ref mut damage,
ref mut energy_regen,
..
} => {
*damage *= power;
*energy_regen *= regen;
},
Fireball {
ref mut damage,
ref mut energy_regen,
ref mut radius,
..
} => {
*damage *= power;
*energy_regen *= regen;
*radius *= range;
},
Frostball {
ref mut damage,
ref mut radius,
..
} => {
*damage *= power;
*radius *= range;
},
NecroticSphere {
ref mut damage,
ref mut radius,
..
} => {
*damage *= power;
*radius *= range;
},
Possess => {},
ClayRocket {
ref mut damage,
ref mut radius,
..
} => {
*damage *= power;
*radius *= range;
},
Snowball {
ref mut damage,
ref mut radius,
..
} => {
*damage *= power;
*radius *= range;
},
ExplodingPumpkin {
ref mut damage,
ref mut radius,
..
} => {
*damage *= power;
*radius *= range;
},
}
self
}
}