feat(all): start using an ECS

1 files changed, 56 insertions, 0 deletions

diff --git a/stockton-types/src/session.rs b/stockton-types/src/session.rs
new file mode 100644
index 0000000..8e48b59
--- /dev/null
+++ b/stockton-types/src/session.rs
@@ -0,0 +1,56 @@
+/*
+ * Copyright (C) Oscar Shrimpton 2020
+ *
+ * This program is free software: you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the Free
+ * Software Foundation, either version 3 of the License, or (at your option)
+ * any later version.
+ *
+ * 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 General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+//! The thing you play on and all the associated state.
+
+use legion::systems::Builder;
+use legion::*;
+
+/// A loaded world.
+pub struct Session {
+    world: World,
+    resources: Resources,
+    schedule: Schedule,
+}
+
+impl Session {
+    /// Create a new world from a level.
+    /// The level can be any format, as long as it has the required features of a bsp.
+    pub fn new<R: FnOnce(&mut Resources), S: FnOnce(&mut Builder)>(
+        add_resources: R,
+        add_systems: S,
+    ) -> Session {
+        let world = World::default();
+
+        let mut resources = Resources::default();
+        add_resources(&mut resources);
+
+        let mut schedule = Schedule::builder();
+        add_systems(&mut schedule);
+        let schedule = schedule.build();
+
+        Session {
+            world,
+            resources,
+            schedule,
+        }
+    }
+
+    pub fn do_update(&mut self) {
+        self.schedule.execute(&mut self.world, &mut self.resources);
+    }
+}