10% of bow hits cause bleed debuff

common/src/comp/inventory/item/tool.rs

@@ -2,7 +2,11 @@
 // version in voxygen\src\meta.rs in order to reset save files to being empty
 
 use crate::{
-    comp::{body::object, projectile, Body, CharacterAbility, Gravity, LightEmitter, Projectile},
+    comp::{
+        body::object,
+        buff::{Buff, BuffCategory, BuffData, BuffKind, BuffSource},
+        projectile, Body, CharacterAbility, Gravity, LightEmitter, Projectile,
+    },
     states::combo_melee,
     Damage, Damages, Explosion, Knockback,
 };
@@ -305,6 +309,18 @@ impl Tool {
                             projectile::Effect::Knockback(Knockback::Away(10.0)),
                             projectile::Effect::RewardEnergy(50),
                             projectile::Effect::Vanish,
+                            projectile::Effect::Buff {
+                                buff: Buff::new(
+                                    BuffKind::Bleeding,
+                                    BuffData {
+                                        strength: 20.0 * self.base_power(),
+                                        duration: Some(Duration::from_secs(5)),
+                                    },
+                                    vec![BuffCategory::Physical],
+                                    BuffSource::Unknown,
+                                ),
+                                chance: Some(0.10),
+                            },
                         ],
                         time_left: Duration::from_secs(15),
                         owner: None,
@@ -347,6 +363,18 @@ impl Tool {
                             )),
                             projectile::Effect::Knockback(Knockback::Away(10.0)),
                             projectile::Effect::Vanish,
+                            projectile::Effect::Buff {
+                                buff: Buff::new(
+                                    BuffKind::Bleeding,
+                                    BuffData {
+                                        strength: 20.0 * self.base_power(),
+                                        duration: Some(Duration::from_secs(5)),
+                                    },
+                                    vec![BuffCategory::Physical],
+                                    BuffSource::Unknown,
+                                ),
+                                chance: Some(0.10),
+                            },
                         ],
                         time_left: Duration::from_secs(15),
                         owner: None,

common/src/comp/projectile.rs

@@ -1,4 +1,4 @@
-use crate::{sync::Uid, Damages, Explosion, Knockback};
+use crate::{comp::Buff, sync::Uid, Damages, Explosion, Knockback};
 use serde::{Deserialize, Serialize};
 use specs::{Component, FlaggedStorage};
 use specs_idvs::IdvStorage;
@@ -13,6 +13,7 @@ pub enum Effect {
     Vanish,
     Stick,
     Possess,
+    Buff { buff: Buff, chance: Option<f32> },
 }
 
 #[derive(Clone, Debug, PartialEq, Serialize, Deserialize)]

common/src/states/charged_ranged.rs

@@ -1,5 +1,6 @@
 use crate::{
     comp::{
+        buff::{Buff, BuffCategory, BuffData, BuffKind, BuffSource},
         projectile, Body, CharacterState, EnergySource, Gravity, LightEmitter, Projectile,
         StateUpdate,
     },
@@ -101,6 +102,18 @@ impl CharacterBehavior for Data {
                             )),
                             projectile::Effect::Knockback(Knockback::Away(knockback)),
                             projectile::Effect::Vanish,
+                            projectile::Effect::Buff {
+                                buff: Buff::new(
+                                    BuffKind::Bleeding,
+                                    BuffData {
+                                        strength: damage / 5.0,
+                                        duration: Some(Duration::from_secs(5)),
+                                    },
+                                    vec![BuffCategory::Physical],
+                                    BuffSource::Unknown,
+                                ),
+                                chance: Some(0.10),
+                            },
                         ],
                         time_left: Duration::from_secs(15),
                         owner: None,

common/src/sys/projectile.rs

@@ -1,5 +1,6 @@
 use crate::{
     comp::{
+        buff::{BuffChange, BuffSource},
         projectile, Energy, EnergySource, Group, HealthSource, Loadout, Ori, PhysicsState, Pos,
         Projectile, Vel,
     },
@@ -9,6 +10,7 @@ use crate::{
     state::DeltaTime,
     sync::UidAllocator,
 };
+use rand::{thread_rng, Rng};
 use specs::{
     saveload::MarkerAllocator, Entities, Join, Read, ReadExpect, ReadStorage, System, WriteStorage,
 };
@@ -155,6 +157,22 @@ impl<'a> System<'a> for Sys {
                                 }
                             }
                         },
+                        projectile::Effect::Buff { buff, chance } => {
+                            if let Some(entity) =
+                                uid_allocator.retrieve_entity_internal(other.into())
+                            {
+                                if chance.map_or(true, |c| thread_rng().gen::<f32>() < c) {
+                                    let mut buff = buff.clone();
+                                    if let Some(uid) = projectile.owner {
+                                        buff.source = BuffSource::Character { by: uid };
+                                    }
+                                    server_emitter.emit(ServerEvent::Buff {
+                                        entity,
+                                        buff_change: BuffChange::Add(buff),
+                                    });
+                                }
+                            }
+                        },
                         _ => {},
                     }
                 }