1 files changed, 54 insertions, 0 deletions
diff --git a/server/src/entity/conveyor.rs b/server/src/entity/conveyor.rs
new file mode 100644
index 00000000..b74c03ef
--- /dev/null
+++ b/server/src/entity/conveyor.rs
@@ -0,0 +1,54 @@
+use super::Entity;
+use crate::{
+    data::Gamedata,
+    game::{interact_effect, Tile},
+    protocol::{ItemLocation, PacketC},
+};
+use anyhow::{anyhow, Result};
+use glam::IVec2;
+use std::collections::{HashMap, VecDeque};
+
+#[derive(Debug, Default)]
+pub struct Conveyor {
+    pub(super) from: IVec2,
+    pub(super) to: IVec2,
+    pub(super) cooldown: f32,
+    pub(super) max_cooldown: f32,
+}
+
+impl Entity for Conveyor {
+    fn tick(
+        &mut self,
+        data: &Gamedata,
+        points: &mut i64,
+        packet_out: &mut VecDeque<PacketC>,
+        tiles: &mut HashMap<IVec2, Tile>,
+        dt: f32,
+    ) -> Result<()> {
+        let [from, to] = tiles
+            .get_many_mut([&self.from, &self.to])
+            .ok_or(anyhow!("conveyor does ends in itself"))?;
+
+        if from.item.is_some() {
+            self.cooldown += dt;
+            if self.cooldown < self.max_cooldown {
+                return Ok(());
+            }
+            self.cooldown = 0.;
+
+            interact_effect(
+                data,
+                true,
+                &mut to.item,
+                ItemLocation::Tile(self.to),
+                &mut from.item,
+                ItemLocation::Tile(self.from),
+                Some(to.kind),
+                packet_out,
+                points,
+            );
+        }
+
+        Ok(())
+    }
+}