From 57a712f1408383b3884cedae7464b02faedb6e56 Mon Sep 17 00:00:00 2001
From: Mark Hoekveen <mhoekveen@gmail.com>
Date: Mon, 28 Oct 2019 13:47:26 +0100
Subject: [PATCH] Adds mutation

---
 CreatureLab.gd |  3 +++
 Spatial.tscn   | 20 ++++++++++----------
 2 files changed, 13 insertions(+), 10 deletions(-)

diff --git a/CreatureLab.gd b/CreatureLab.gd
index 374844f..b9653b4 100644
--- a/CreatureLab.gd
+++ b/CreatureLab.gd
@@ -1,5 +1,6 @@
 extends Node
 export (PackedScene) var Creature
+export (float) var mutation_rate = 0.05
 
 var selected = []
 var rng = RandomNumberGenerator.new()
@@ -32,6 +33,8 @@ func combine_a_bitch():
 				new_dna.append(selected[0].dna[i])
 			else:
 				new_dna.append(selected[1].dna[i])
+			if rng.randf() <= mutation_rate:
+				new_dna.append(!new_dna.pop_back())
 		var new_child = spawn_a_bitch()
 		new_child.dna = new_dna
 		deselect_all()
diff --git a/Spatial.tscn b/Spatial.tscn
index a68a40b..835c09d 100644
--- a/Spatial.tscn
+++ b/Spatial.tscn
@@ -30,7 +30,7 @@ background_sky = SubResource( 5 )
 [sub_resource type="World" id=7]
 environment = SubResource( 6 )
 
-[sub_resource type="ProceduralSky" id=10]
+[sub_resource type="ProceduralSky" id=8]
 sky_top_color = Color( 0, 0, 0, 1 )
 sky_horizon_color = Color( 0, 0, 0, 1 )
 ground_bottom_color = Color( 0, 0, 0, 1 )
@@ -38,14 +38,14 @@ ground_horizon_color = Color( 0, 0, 0, 1 )
 sun_latitude = 137.19
 sun_energy = 14.21
 
-[sub_resource type="Environment" id=11]
+[sub_resource type="Environment" id=9]
 background_mode = 2
-background_sky = SubResource( 10 )
+background_sky = SubResource( 8 )
 
-[sub_resource type="World" id=12]
-environment = SubResource( 11 )
+[sub_resource type="World" id=10]
+environment = SubResource( 9 )
 
-[sub_resource type="ProceduralSky" id=8]
+[sub_resource type="ProceduralSky" id=11]
 sky_top_color = Color( 0, 0, 0, 1 )
 sky_horizon_color = Color( 0, 0, 0, 1 )
 sky_curve = 1.44
@@ -57,9 +57,9 @@ sun_color = Color( 0.835294, 0.462745, 0.462745, 1 )
 sun_latitude = 11.29
 sun_energy = 20.16
 
-[sub_resource type="Environment" id=9]
+[sub_resource type="Environment" id=12]
 background_mode = 2
-background_sky = SubResource( 8 )
+background_sky = SubResource( 11 )
 background_color = Color( 0.803922, 0.54902, 0.333333, 0.196078 )
 tonemap_mode = 2
 auto_exposure_speed = 3.15
@@ -161,7 +161,7 @@ rect_scale = Vector2( 0.5, 0.5 )
 
 [node name="Viewport" type="Viewport" parent="GUI/Preview1"]
 size = Vector2( 640, 480 )
-world = SubResource( 12 )
+world = SubResource( 10 )
 handle_input_locally = false
 render_target_update_mode = 3
 gui_disable_input = true
@@ -181,7 +181,7 @@ script = ExtResource( 3 )
 Creature = ExtResource( 2 )
 
 [node name="WorldEnvironment" type="WorldEnvironment" parent="."]
-environment = SubResource( 9 )
+environment = SubResource( 12 )
 [connection signal="pressed" from="GUI/Spawn" to="CreatureLab" method="spawn_a_bitch"]
 [connection signal="pressed" from="GUI/Kill" to="CreatureLab" method="kill_a_bitch"]
 [connection signal="pressed" from="GUI/Button" to="CreatureLab" method="combine_a_bitch"]