Add demand sink entity (close #532)

1 files changed, 46 insertions, 0 deletions

diff --git a/server/src/entity/demand_sink.rs b/server/src/entity/demand_sink.rs
new file mode 100644
index 00000000..a653fe3e
--- /dev/null
+++ b/server/src/entity/demand_sink.rs
@@ -0,0 +1,46 @@
+/*
+    Hurry Curry! - a game about cooking
+    Copyright (C) 2025 Hurry Curry! Contributors
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU Affero General Public License as published by
+    the Free Software Foundation, version 3 of the License only.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU Affero General Public License for more details.
+
+    You should have received a copy of the GNU Affero General Public License
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+*/
+
+use crate::entity::{Entity, EntityContext};
+use anyhow::Result;
+use hurrycurry_locale::TrError;
+use hurrycurry_protocol::glam::IVec2;
+
+pub struct DemandSink {
+    pub pos: IVec2,
+}
+impl Entity for DemandSink {
+    fn tick(&mut self, c: EntityContext<'_>) -> Result<(), TrError> {
+        let Some(tile) = c.game.tiles.get(&self.pos) else {
+            return Ok(());
+        };
+        let Some(item) = &tile.item else {
+            return Ok(());
+        };
+        if let Some(demand) = c.game.data.demands.iter().find(|d| d.input == item.kind) {
+            c.game.score.demands_completed += 1;
+            c.game.score.points += demand.points;
+            *c.score_changed = true
+            // TODO satisfied effect
+        } else {
+            // No effect
+        }
+        c.game.set_item(self.pos, None);
+        Ok(())
+    }
+}