seeding! hooray!

godot/world/StateApi.gd

@@ -3,6 +3,7 @@ extends Node
 export var xsize = 64
 export var ysize = 64
 export var zsize = 8
+export var cityname = "cool city"
 
 func _ready():
-	StateServer.generate_world(xsize, ysize, zsize)
+	StateServer.generate_world(xsize, ysize, zsize, cityname)

routes-native/Cargo.toml

@@ -13,6 +13,7 @@ gdnative = {version = "0.10", features = ["async"]}
 strum = { version = "0.24", features = ["derive"] }
 strum_macros = "0.24"
 derive_builder = "0.11.2"
+rand_seeder = "0.2.3"
 rand = "0.8.5"
 toml = "0.5.9"
 

routes-native/src/stateserver.rs

@@ -14,7 +14,7 @@ pub struct StateServer {
 impl StateServer {
     fn new(_owner: &Node) -> Self {
         StateServer {
-            world: world::World::new(0, 0, 0),
+            world: world::World::new(0, 0, 0, "seed".to_string()),
         }
     }
 
@@ -32,8 +32,8 @@ impl StateServer {
     fn _ready(&self, _owner: &Node) {}
 
     #[export]
-    fn generate_world(&mut self, _owner: &Node, xsize: usize, ysize: usize, zsize: usize) {
+    fn generate_world(&mut self, _owner: &Node, xsize: usize, ysize: usize, zsize: usize, seed: String) {
-        self.world = world::World::new(xsize, ysize, zsize);
+        self.world = world::World::new(xsize, ysize, zsize, seed);
         let w = self.world.generate();
         _owner.emit_signal("request_init", &[]);
         _owner.emit_signal("changed_tiletypes", &[Variant::new(&w)]);

routes-native/src/stateserver/world.rs

@@ -1,7 +1,10 @@
 use gdnative::prelude::*;
+use rand::{prelude::StdRng, SeedableRng};
 use rand::prelude::*;
+use rand_seeder::Seeder;
 use strum::{EnumCount, IntoEnumIterator};
 
+
 mod tiles;
 
 pub struct World {
@@ -9,6 +12,7 @@ pub struct World {
     pub ysize: usize,
     pub zsize: usize,
     tiles: Vec<Vec<Vec<tiles::Tiletypes>>>,
+    seed: String,
 }
 
 impl World {
@@ -29,7 +33,7 @@ impl World {
     }
 
     pub fn generate(&mut self) -> Vector3Array {
-        let mut rng = thread_rng();
+        let mut rng: StdRng = Seeder::from(self.seed.to_owned()).make_rng();
         self.tiles = get_vec3(self.xsize, self.ysize, self.zsize);
         let mut ret: Vector3Array = Vector3Array::new();
         for x in 0..self.xsize {
@@ -45,12 +49,18 @@ impl World {
         }
         ret
     }
-    pub fn new(xsize: usize, ysize: usize, zsize: usize) -> World {
+
+    fn tile_at(&self, x: usize, y: usize, z:usize) -> tiles::Tiletypes {
+        tiles::Tiletypes::Air
+    }
+
+    pub fn new(xsize: usize, ysize: usize, zsize: usize, seed: String) -> World {
         World {
             xsize,
             ysize,
             zsize,
             tiles: get_vec3(xsize, ysize, zsize),
+            seed,
         }
     }
 }