entity spawning. great success

src/runtime/state.rs

@@ -1,6 +1,11 @@
+use std::collections::HashMap;
+use std::fs;
+use std::path::PathBuf;
 use std::time::Instant;
 
 use cgmath::{Euler, Quaternion};
+use config::Config;
+use config::File;
 use legion::world::SubWorld;
 use legion::IntoQuery;
 use legion::*;
@@ -8,15 +13,66 @@ use nalgebra::Quaternion as naQuaternion;
 use rapier3d::dynamics::{IntegrationParameters, JointSet, RigidBodySet};
 use rapier3d::geometry::{BroadPhase, ColliderSet, NarrowPhase};
 use rapier3d::pipeline::PhysicsPipeline;
+
 use crate::camera::{Camera, CameraController};
 use crate::components::{Collider, LoopState, Mesh, Physics, Position};
+use crate::geometry::{load_obj, RawMesh};
 
+pub struct EntityMeta {
+    pub name: String,
+    pub ent_type: String,
+    pub mesh: String,
+}
 
 pub struct RuntimeState {
-
+    config_db: Config,
+    mesh_cache: HashMap<String, RawMesh>,
 }
 
 impl RuntimeState {
-    pub fn build() {
+    pub fn new() -> RuntimeState {
+        let mut settings = Config::default();
+        settings
+            // File::with_name(..) is shorthand for File::from(Path::new(..))
+            .merge(File::with_name("conf/entity_spawns.toml"))
+            .unwrap();
+
+        RuntimeState {
+            config_db: settings,
+            mesh_cache: Default::default(),
+        }
+    }
+
+    pub fn get_mesh(&mut self, mesh: &str) -> Option<&RawMesh> {
+        self.mesh_cache.get(mesh)
+    }
+
+    pub fn get_configured_entities(&mut self) -> Vec<EntityMeta> {
+        let mut out = Vec::new();
+        for entity in self.config_db.get_array("entities").unwrap() {
+            let table = entity.into_table().unwrap();
+            out.push(EntityMeta {
+                name: table.get("name").unwrap().kind.to_string(),
+                ent_type: table.get("type").unwrap().kind.to_string(),
+                mesh: table.get("mesh").unwrap().kind.to_string(),
+            });
+        }
+        out
+    }
+
+    pub fn preload_meshes(&mut self, resources_path: PathBuf) {
+        log::info!("Preloading meshes...");
+
+        let paths = fs::read_dir(resources_path).unwrap();
+        for file in paths {
+            let file = file.unwrap();
+            let filepath = file.path().clone();
+            let filename = String::from(file.file_name().to_str().unwrap());
+
+            if filename.ends_with(".obj") {
+                let mesh = load_obj(filepath.to_str().unwrap()).unwrap();
+                self.mesh_cache.insert(filename, mesh);
+            }
+        }
     }
 }