add tram entity, works badly

1 files changed, 95 insertions, 0 deletions

diff --git a/server/src/entity/tram.rs b/server/src/entity/tram.rs
new file mode 100644
index 00000000..27c3bcbb
--- /dev/null
+++ b/server/src/entity/tram.rs
@@ -0,0 +1,95 @@
+/*
+    Hurry Curry! - a game about cooking
+    Copyright 2025 metamuffin
+
+    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 super::{Entity, EntityContext};
+use anyhow::Result;
+use hurrycurry_protocol::{glam::Vec2, PacketS, PlayerClass, PlayerID};
+use rand::random;
+
+pub struct Tram {
+    length: usize,
+    character: i32,
+    ids: Vec<PlayerID>,
+    points: Vec<Vec2>,
+    index: usize,
+}
+
+impl Tram {
+    pub fn new(character: i32, length: usize, points: Vec<Vec2>) -> Self {
+        Self {
+            character,
+            ids: Vec::new(),
+            length,
+            points,
+            index: 0,
+        }
+    }
+}
+impl Entity for Tram {
+    fn finished(&self) -> bool {
+        false
+    }
+    fn tick(&mut self, c: EntityContext<'_>) -> Result<()> {
+        if self.ids.is_empty() {
+            for i in 0..self.length {
+                let id = PlayerID(random());
+                c.packet_in.push_back(PacketS::Join {
+                    name: format!("Tram {i}"),
+                    character: self.character,
+                    class: PlayerClass::Bot,
+                    id: Some(id),
+                });
+                self.ids.push(id);
+            }
+        }
+
+        let mut ppos = None;
+        for id in &self.ids {
+            if let Some(p) = c.game.players.get(id) {
+                let target = if let Some(pos) = ppos {
+                    pos
+                } else {
+                    let tar = self.points[self.index];
+                    if p.movement.position.distance(tar) < 2. {
+                        self.index += 1;
+                        self.index %= self.points.len();
+                    }
+                    tar
+                };
+                ppos = Some(p.movement.position);
+                let dir = if p.movement.position.distance(target) > 2. {
+                    target - p.movement.position
+                } else {
+                    Vec2::ZERO
+                };
+                c.packet_in.push_back(PacketS::Movement {
+                    player: *id,
+                    dir,
+                    boost: false,
+                    pos: None,
+                });
+            }
+        }
+
+        Ok(())
+    }
+    fn destructor(&mut self, c: EntityContext<'_>) {
+        for id in self.ids.drain(..) {
+            c.packet_in.push_back(PacketS::Leave { player: id })
+        }
+    }
+}