[WIP] Implement Effects

Cargo.toml

@@ -9,6 +9,7 @@ members = [
     "libcraft/particles",
     "libcraft/text",
     "libcraft/inventory",
+    "libcraft/effects",
 
     # Quill
     "quill/sys-macros",

feather/server/Cargo.toml

@@ -51,6 +51,7 @@ uuid = "0.8"
 slab = "0.4"
 libcraft-core = { path = "../../libcraft/core" }
 libcraft-items = { path = "../../libcraft/items" }
+libcraft-effects = { path = "../../libcraft/effects" }
 worldgen = { path = "../worldgen", package = "feather-worldgen" }
 
 [features]

feather/server/src/client.rs

@@ -20,7 +20,8 @@ use common::{
 use libcraft_items::InventorySlot;
 use packets::server::{Particle, SetSlot, SpawnLivingEntity, UpdateLight, WindowConfirmation};
 use protocol::packets::server::{
-    EntityPosition, EntityPositionAndRotation, EntityTeleport, HeldItemChange, PlayerAbilities,
+    EntityEffect, EntityPosition, EntityPositionAndRotation, EntityTeleport, HeldItemChange,
+    PlayerAbilities, RemoveEntityEffect,
 };
 use protocol::{
     packets::{
@@ -42,6 +43,7 @@ use crate::{
     network_id_registry::NetworkId,
     Options,
 };
+use quill_common::components_effects::EffectFlags;
 use slab::Slab;
 
 /// Max number of chunks to send to a client per tick.
@@ -602,6 +604,40 @@ impl Client {
         self.send_packet(HeldItemChange { slot });
     }
 
+    pub fn send_entity_effect(
+        &self,
+        network_id: NetworkId,
+        effect_id: u8,
+        amplifier: i8,
+        duration: i32,
+        flags: EffectFlags,
+    ) {
+        let mut flags_bit = 0;
+        if flags.ambient {
+            flags_bit |= 1 << 0;
+        }
+        if flags.particle {
+            flags_bit |= 1 << 1;
+        }
+        if flags.icon {
+            flags_bit |= 1 << 2;
+        }
+        self.send_packet(EntityEffect {
+            entity_id: network_id.0,
+            effect_id,
+            amplifier,
+            duration,
+            flags: flags_bit,
+        })
+    }
+
+    pub fn send_remove_entity_effect(&self, network_id: NetworkId, effect_id: u8) {
+        self.send_packet(RemoveEntityEffect {
+            entity_id: network_id.0,
+            effect_id,
+        })
+    }
+
     fn register_entity(&self, network_id: NetworkId) {
         self.sent_entities.borrow_mut().insert(network_id);
     }

feather/server/src/packet_handlers.rs

@@ -20,6 +20,7 @@ mod entity_action;
 mod interaction;
 pub mod inventory;
 mod movement;
+mod use_item;
 
 /// Handles a packet received from a client.
 pub fn handle_packet(
@@ -77,6 +78,10 @@ pub fn handle_packet(
             entity_action::handle_entity_action(game, player_id, packet)
         }
 
+        ClientPlayPacket::UseItem(packet) => {
+            use_item::handle_use_item(game, server, packet, player_id)
+        }
+
         ClientPlayPacket::TeleportConfirm(_)
         | ClientPlayPacket::QueryBlockNbt(_)
         | ClientPlayPacket::SetDifficulty(_)
@@ -108,8 +113,7 @@ pub fn handle_packet(
         | ClientPlayPacket::UpdateJigsawBlock(_)
         | ClientPlayPacket::UpdateStructureBlock(_)
         | ClientPlayPacket::UpdateSign(_)
-        | ClientPlayPacket::Spectate(_)
-        | ClientPlayPacket::UseItem(_) => Ok(()),
+        | ClientPlayPacket::Spectate(_) => Ok(()),
     }
 }
 

feather/server/src/packet_handlers/use_item.rs

@@ -0,0 +1,40 @@
+use crate::Server;
+use base::TPS;
+use common::Game;
+use ecs::{Entity, SysResult};
+use protocol::packets::client::UseItem;
+use quill_common::components_effects::*;
+
+pub fn handle_use_item(
+    game: &mut Game,
+    _server: &mut Server,
+    _packet: UseItem,
+    player: Entity,
+) -> SysResult {
+    // example for effect system
+    let mut speed = SpeedEffect::default();
+    speed.add_effect(EffectApplication {
+        amplifier: 0,
+        duration: 20 * TPS,
+        flags: EffectFlags {
+            particle: true,
+            ambient: false,
+            icon: true,
+        },
+        start_tick: 0,
+    });
+
+    speed.add_effect(EffectApplication {
+        amplifier: 1,
+        duration: 10 * TPS,
+        flags: EffectFlags {
+            particle: true,
+            ambient: false,
+            icon: true,
+        },
+        start_tick: 0,
+    });
+
+    game.ecs.insert(player, speed)?;
+    Ok(())
+}

feather/server/src/systems.rs

@@ -2,6 +2,7 @@
 
 mod block;
 mod chat;
+mod effects;
 mod entity;
 mod particle;
 mod player_join;
@@ -36,6 +37,7 @@ pub fn register(server: Server, game: &mut Game, systems: &mut SystemExecutor<Ga
     chat::register(game, systems);
     particle::register(systems);
     plugin_message::register(systems);
+    effects::register(game, systems);
 
     systems.group::<Server>().add_system(tick_clients);
 }