initial commit

1 files changed, 43 insertions, 0 deletions

diff --git a/src/scene.rs b/src/scene.rs
new file mode 100644
index 0000000..143eb0b
--- /dev/null
+++ b/src/scene.rs
@@ -0,0 +1,43 @@
+use rustc_hash::FxHashSet;
+use serde::{Deserialize, Serialize};
+
+use crate::script::{ScriptContext, ScriptManager};
+
+#[derive(Debug, Clone, Serialize, Deserialize)]
+pub struct Scene {
+	pub name: Box<str>,
+	pub scripts: ResourceRequirements,
+}
+
+#[derive(Debug, Clone, Default, Serialize, Deserialize)]
+pub struct ResourceRequirements {
+	pub required: Box<[usize]>,
+	pub preload: Box<[usize]>,
+}
+
+pub fn scene_id_by_name(scenes: &[Scene], name: &str) -> Option<usize> {
+	for (i, scene) in scenes.iter().enumerate() {
+		if &*scene.name == name {
+			return Some(i);
+		}
+	}
+
+	None
+}
+
+pub fn switch_scenes(
+	scenes: &[Scene],
+	scripts: &mut ScriptManager,
+	context: &mut ScriptContext<'_>,
+	new: usize,
+) {
+	let active_scripts = FxHashSet::from_iter(scripts.active_scripts.iter().cloned());
+	let scripts_to_load = &scenes[new].scripts.required;
+	for script in scripts_to_load {
+		if !active_scripts.contains(script) {
+			scripts.activate_script(*script, context);
+		} else {
+			scripts.reset_script(*script, context);
+		}
+	}
+}