65 lines
1.6 KiB
Rust
65 lines
1.6 KiB
Rust
use std::error::Error;
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use crate::core::app::context::WindowContext;
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use super::Scene;
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pub struct SceneManager {
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scenes: Vec<Box<dyn Scene>>,
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current_scene_index: Option<usize>,
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}
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impl SceneManager {
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pub fn new() -> Self {
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Self {
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scenes: Vec::new(),
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current_scene_index: None,
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}
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}
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pub fn load_scene(&mut self, scene: Box<dyn Scene>) {
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self.scenes.push(scene);
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self.current_scene_index = Some(self.scenes.len() - 1);
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}
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pub fn replace_current_scene(&mut self, scene: Box<dyn Scene>) {
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if let Some(index) = self.current_scene_index {
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if index < self.scenes.len() {
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self.scenes[index].unload();
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self.scenes[index] = scene;
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}
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} else {
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self.load_scene(scene);
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}
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}
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pub fn current_scene(&self) -> Option<&Box<dyn Scene>> {
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if let Some(index) = self.current_scene_index {
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self.scenes.get(index)
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} else {
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None
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}
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}
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pub fn current_scene_mut(&mut self) -> Option<&mut Box<dyn Scene>> {
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if let Some(index) = self.current_scene_index {
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self.scenes.get_mut(index)
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} else {
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None
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}
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}
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pub fn load_scene_if_not_loaded(
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&mut self,
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app_context: &mut WindowContext,
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) -> Result<(), Box<dyn Error>> {
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if let Some(scene) = self.current_scene_mut() {
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if !scene.loaded() {
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scene.load(app_context)?;
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}
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} else {
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tracing::warn!("No scene found in SceneManager!");
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}
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Ok(())
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}
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}
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