From 8ff232f21b5a15d3d45b7db71f75f56f58716e6c Mon Sep 17 00:00:00 2001
From: hheik <4469778+hheik@users.noreply.github.com>
Date: Wed, 4 Jan 2023 22:33:04 +0200
Subject: [PATCH] feat: maximum density after disperse (experimental)

---
 src/game.rs      |  2 +-
 src/terrain2d.rs | 14 ++++++++++++--
 2 files changed, 13 insertions(+), 3 deletions(-)

diff --git a/src/game.rs b/src/game.rs
index 1fa1671..61456d3 100644
--- a/src/game.rs
+++ b/src/game.rs
@@ -32,7 +32,7 @@ pub fn init() {
 
 fn setup_window(mut windows: ResMut<Windows>) {
     if let Some(window) = windows.get_primary_mut() {
-        window.set_resolution(900.0, 450.0);
+        window.set_resolution(1280.0, 720.0);
         window.set_title("Kuilu".to_string());
     }
 }
diff --git a/src/terrain2d.rs b/src/terrain2d.rs
index 99629a5..e07bf64 100644
--- a/src/terrain2d.rs
+++ b/src/terrain2d.rs
@@ -226,7 +226,7 @@ fn disperse_gas(
             .sum::<u32>();
 
     // Stop if the gas is already close to a stable state
-    const STABLE_TRESHOLD: u8 = 10;
+    const STABLE_TRESHOLD: u8 = 3;
     if total_densities.iter().all(|(_, _, min, max)| {
         if u8::abs_diff(*min, *max) > STABLE_TRESHOLD {
             return false;
@@ -572,7 +572,17 @@ impl Terrain2D {
         let from = self.get_texel(from_global).unwrap_or_default();
         let to = self.get_texel(to_global).unwrap_or_default();
         let max_transfer = gravity.abs();
-        let transfer = (u8::MAX - to.density).min(max_transfer).min(from.density);
+
+        // DEBUG: Test this out, another property?
+        const MAX_TARGET_DENSITY: u8 = 25;
+        let transfer = (u8::MAX - to.density)
+            .min(max_transfer)
+            .min(from.density)
+            .min(MAX_TARGET_DENSITY.max(to.density) - to.density);
+        if transfer == 0 {
+            return;
+        }
+
         if from.density - transfer == 0 {
             self.set_texel(&from_global, Texel2D::default(), simulation_frame);
         } else {