From e251d719710a951954e2dd9f93544afc601a6600 Mon Sep 17 00:00:00 2001
From: Akshay Nair <phenax5@gmail.com>
Date: Sat, 24 Oct 2026 12:09:08 +0530
Subject: Add blood reaction diffusion

---
 src/main/kotlin/blood/BloodConfigs.kt | 106 ++++++++++++++++++++++++++++++++++
 1 file changed, 106 insertions(+)
 create mode 100644 src/main/kotlin/blood/BloodConfigs.kt

(limited to 'src/main/kotlin/blood/BloodConfigs.kt')

diff --git a/src/main/kotlin/blood/BloodConfigs.kt b/src/main/kotlin/blood/BloodConfigs.kt
new file mode 100644
index 0000000..d6630e6
--- /dev/null
+++ b/src/main/kotlin/blood/BloodConfigs.kt
@@ -0,0 +1,106 @@
+package blood
+
+import kotlin.random.Random
+import org.openrndr.math.IntVector2
+import org.openrndr.math.Vector2
+
+typealias Cells = Array<Array<Vector2>>
+
+class BloodConfigs {
+  abstract class Base {
+    abstract val feedRate: Double
+    abstract val killRate: Double
+    open val iterationsPerFrame: Int = 40
+    open val diffusion: Vector2 = Vector2(1.0, 0.5)
+    open val random: Random = Random(100)
+    open val initialSize: IntVector2 = IntVector2(20, 20)
+    open val noiseProbability: Double = 1.0
+
+    open fun initializeState(cells: Cells) {
+      val x = cells[0].size / 2 - initialSize.x / 2
+      val y = cells.size / 2 - initialSize.y / 2
+      for (i in y until (y + initialSize.y)) {
+        for (j in x until (x + initialSize.x)) {
+          val v = random.nextDouble(1.0) <= noiseProbability
+          cells[i][j] = if (v) Vector2(0.0, 1.0) else Vector2(1.0, 0.0)
+        }
+      }
+    }
+  }
+
+  class mitosis : Base() {
+    override val feedRate = 0.0367
+    override val killRate = 0.0649
+    override val noiseProbability = 0.1
+    override val random = Random(0)
+  }
+
+  class coral : Base() {
+    override val feedRate = 0.055
+    override val killRate = 0.062
+  }
+
+  class holey : Base() {
+    override val feedRate = 0.043
+    override val killRate = 0.059
+  }
+
+  class pulseSettled1 : Base() {
+    override val feedRate = 0.037
+    override val killRate = 0.059
+  }
+
+  class pulseSettled2 : Base() {
+    override val feedRate = 0.029
+    override val killRate = 0.057
+  }
+
+  class bubbles : Base() {
+    override val feedRate = 0.014
+    override val killRate = 0.054
+    override val noiseProbability = 0.2
+  }
+
+  class worms : Base() {
+    override val feedRate = 0.078
+    override val killRate = 0.061
+    override val random = Random(200)
+    override val noiseProbability = 0.1
+    override val initialSize = IntVector2(200, 50)
+  }
+
+  class fingies : Base() {
+    override val feedRate = 0.046
+    override val killRate = 0.063
+  }
+
+  class maze : Base() {
+    override val feedRate = 0.029
+    override val killRate = 0.057
+    override val noiseProbability = 0.2
+  }
+
+  class explosions : Base() {
+    override val feedRate = 0.018
+    override val killRate = 0.051
+    override val noiseProbability = 0.2
+    override val iterationsPerFrame = 18
+  }
+
+  class waves : Base() {
+    override val feedRate = 0.014
+    override val killRate = 0.045
+    override val iterationsPerFrame = 18
+  }
+}
+
+fun getConfig(name: String): BloodConfigs.Base {
+  val cls = BloodConfigs::class.nestedClasses.first { it.simpleName == name }
+  val ctor = cls.constructors.first()
+  val inst = ctor.call() as BloodConfigs.Base
+  return inst
+}
+
+fun getConfig(): BloodConfigs.Base {
+  return getConfig(System.getenv("PHENAX_FILE_SUFFIX") ?: "pulseSettled2")
+}
-- 
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