From a57cb58602b323469861c0b06573c6e47db56f34 Mon Sep 17 00:00:00 2001
From: Kai Stevenson <kai@kaistevenson.com>
Date: Sat, 29 Aug 2026 21:26:41 -0700
Subject: generating wood caves

---
 src/main.rs | 32 +++++++++++++++++++++++---------
 1 file changed, 23 insertions(+), 9 deletions(-)

(limited to 'src/main.rs')

diff --git a/src/main.rs b/src/main.rs
index 9c702a8..0284aaf 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -2,6 +2,7 @@ mod camera;
 mod config;
 mod content;
 mod input;
+mod proc_gen;
 mod renderer;
 mod sim;
 mod sprite_loader;
@@ -30,6 +31,7 @@ use crate::{
         Input::{self},
         InputManager,
     },
+    proc_gen::WorldGenerator,
     renderer::RendererState,
     sim::{entity::EntityDef, rb_manager::DebugRenderMode, sim_manager::SimManager},
     vfx::VfxManager,
@@ -46,6 +48,10 @@ struct Config {
     cells_render: bool,
     debug_render: bool,
     debug_render_mode: DebugRenderMode,
+
+    // proc gen
+    proc_gen_seed: i32,
+    cave_noise_freq: f32,
 }
 
 struct Diagnostics {
@@ -63,6 +69,7 @@ struct App {
     camera: Option<Camera>,
     vfx_manager: Option<VfxManager>,
     sim_manager: Option<SimManager>,
+    world_generator: Option<WorldGenerator>,
 
     // renderer
     last_render: Instant,
@@ -123,6 +130,18 @@ impl App {
 
 impl Default for App {
     fn default() -> Self {
+        let config = Config {
+            use_threading: true,
+            brush_radius: 10.0,
+            brush_material: MaterialId::Sand,
+            dropper_material: MaterialId::Wood,
+            cells_render: true,
+            debug_render: false,
+            debug_render_mode: DebugRenderMode::default(),
+
+            proc_gen_seed: 10,
+            cave_noise_freq: 0.005,
+        };
         Self {
             window: None,
             renderer_state: None,
@@ -133,18 +152,11 @@ impl Default for App {
 
             vfx_manager: Some(VfxManager::new()),
             sim_manager: Some(SimManager::new()),
+            world_generator: Some(WorldGenerator::new(&config)),
 
             last_render: Instant::now(),
 
-            config: Config {
-                use_threading: true,
-                brush_radius: 10.0,
-                brush_material: MaterialId::Sand,
-                dropper_material: MaterialId::Wood,
-                cells_render: true,
-                debug_render: false,
-                debug_render_mode: DebugRenderMode::default(),
-            },
+            config,
             diagnostics: Diagnostics {
                 fps: 0.0,
                 frame_times: VecDeque::new(),
@@ -227,6 +239,7 @@ impl ApplicationHandler for App {
                     && let Some(sim) = &mut self.sim_manager
                     && let Some(vfx) = &mut self.vfx_manager
                     && let Some(camera) = &mut self.camera
+                    && let Some(world_generator) = &mut self.world_generator
                 {
                     renderer_state.render(
                         sim,
@@ -235,6 +248,7 @@ impl ApplicationHandler for App {
                         &mut self.config,
                         &self.diagnostics,
                         &self.input_manager,
+                        world_generator,
                     );
 
                     vfx.after_render(delta_time);
-- 
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