From 225574d2acf8130a8a68b96c7579a4574d2a8d09 Mon Sep 17 00:00:00 2001
From: Brevven <brevingame@gmail.com>
Date: Wed, 10 Mar 2021 22:50:29 -0800
Subject: [PATCH] reduce distant lead

---
 changelog.txt |  5 +++++
 info.json     |  2 +-
 lead-ore.lua  | 20 +++++++++++++++++---
 3 files changed, 23 insertions(+), 4 deletions(-)

diff --git a/changelog.txt b/changelog.txt
index e800c88..679b3b5 100644
--- a/changelog.txt
+++ b/changelog.txt
@@ -1,5 +1,10 @@
 ---------------------------------------------------------------------------------------------------
 Version: 0.3.1
+Date: 2021-03-10
+  Changes:
+    - Slightly increase starting area lead, greatly reduce distant lead.
+---------------------------------------------------------------------------------------------------
+Version: 0.3.1
 Date: 2021-03-09
   Features:
     - SimpleCompress support
diff --git a/info.json b/info.json
index 3c0e907..2ef79b3 100644
--- a/info.json
+++ b/info.json
@@ -1,6 +1,6 @@
 {
     "name": "bzlead",
-    "version": "0.3.1",
+    "version": "0.3.2",
     "factorio_version": "1.1",
     "title": "Lead",
     "author": "Brevven",
diff --git a/lead-ore.lua b/lead-ore.lua
index 0daf74b..257ec94 100644
--- a/lead-ore.lua
+++ b/lead-ore.lua
@@ -1,4 +1,5 @@
 local resource_autoplace = require('resource-autoplace');
+local noise = require('noise');
 
 local util = require("__bzlead__.util");
 
@@ -35,10 +36,11 @@ data:extend({
     autoplace = resource_autoplace.resource_autoplace_settings{
       name = "lead-ore",
       order = "b-z",
-      base_density = 5,
+      base_density = 6,
+      base_spots_per_km2 = 1,
       has_starting_area_placement = true,
-      regular_rq_factor_multiplier = 1.3,
-      starting_rq_factor_multiplier = 1.7
+      regular_rq_factor_multiplier = 1.2,
+      starting_rq_factor_multiplier = 1.7,
     },
 
     stage_counts = {15000, 9500, 5500, 2900, 1300, 400, 150, 80},
@@ -80,3 +82,15 @@ data:extend({
   },
 })
 
+local richness = data.raw.resource["lead-ore"].autoplace.richness_expression  
+
+-- Modify lead autoplace richness: 
+-- Up to 200 tiles it's standard
+-- From 200 to 700 tiles, richness scales linearly down, until
+-- From 700 tiles onward, it's about 1/6th the richness.
+data.raw.resource["lead-ore"].autoplace.richness_expression = 
+  richness * noise.if_else_chain(
+      noise.less_than(noise.distance_from(noise.var("x"), noise.var("y"), noise.var("starting_positions")), noise.to_noise_expression(200)), 1,
+      noise.less_than(noise.distance_from(noise.var("x"), noise.var("y"), noise.var("starting_positions")), noise.to_noise_expression(700)), 
+        100 / (noise.distance_from(noise.var("x"), noise.var("y"), noise.var("starting_positions")) - 100),
+      0.17)