From 37ab56115fd07c3fc7350179123ac1afc7a37a74 Mon Sep 17 00:00:00 2001
From: griffi-gh <prasol258@gmail.com>
Date: Wed, 18 Jan 2023 03:51:11 +0100
Subject: [PATCH] experimenting a bit more

---
 src/game/world/thread/world_gen.rs | 22 +++++++++++++++++++++-
 1 file changed, 21 insertions(+), 1 deletion(-)

diff --git a/src/game/world/thread/world_gen.rs b/src/game/world/thread/world_gen.rs
index 34a403f..e32d129 100644
--- a/src/game/world/thread/world_gen.rs
+++ b/src/game/world/thread/world_gen.rs
@@ -6,6 +6,9 @@ use crate::game::{
 };
 
 const HEIGHTMAP_SCALE: f64 = 0.004;
+const MOUNTAINESS_SCALE: f64 = 0.0001;
+const MNT_RAMP_1: f64 = 0.5;
+const MNT_RAMP_2: f64 = 0.6;
 const TERRAIN_HEIGHT_MIN: f64 = 64.;
 const TERRAIN_HEIGHT_MAX: f64 = 80.;
 
@@ -17,14 +20,31 @@ pub fn generate_chunk(position: IVec2, seed: u32) -> ChunkData {
   let mut terrain_base_fbm: Fbm<Perlin> = Fbm::new(seed);
   terrain_base_fbm.octaves = 6;
   
+  let mut mountainess_base_fbm: Fbm<Perlin> = Fbm::new(seed);
+  mountainess_base_fbm.octaves = 4;
+
   //put everything together
   for x in 0..CHUNK_SIZE {
     for z in 0..CHUNK_SIZE {
       let point = world_xz.as_dvec2() + DVec2::from_array([x as f64, z as f64]);
 
       let heightmap = (terrain_base_fbm.get((point * HEIGHTMAP_SCALE).to_array()) + 1.) / 2.;
+      let mountainess = (mountainess_base_fbm.get((point * MOUNTAINESS_SCALE).to_array()) + 1.) / 2.;
+
       //generate basic terrain
-      let terain_height = (TERRAIN_HEIGHT_MIN + (heightmap * TERRAIN_HEIGHT_MAX)).floor() as usize;
+      let terain_height = 
+        (
+          TERRAIN_HEIGHT_MIN + 
+          (heightmap * TERRAIN_HEIGHT_MAX * (1. + if mountainess < MNT_RAMP_1 {
+            0.
+          } else {
+            if mountainess > MNT_RAMP_2 {
+              1.
+            } else {
+              mountainess - MNT_RAMP_1
+            }
+          }))
+        ).floor() as usize;
       for y in 0..terain_height {
         chunk[x][y][z] = Block::Dirt;
       }