adopting Java 9/Kotlin 1.2

src/net/torvald/terrarum/gameactors/ai/SmarterSlimes.kt

@@ -1,7 +1,51 @@
 package net.torvald.terrarum.gameactors.ai
 
+import net.torvald.terrarum.Terrarum
+import net.torvald.terrarum.gameactors.HumanoidNPC
+import net.torvald.terrarum.gameactors.Second
+
 /**
+ * Slime's stupid AI but can adjust his jump power to smack you as fast as possible
+ * by achieving "allostasis".
+ *
  * Created by minjaesong on 2017-12-10.
  */
-class SmarterSlimes {
+class SmarterSlimes : ActorAI {
+
+    val memoryCells = IntArray(12, { 0 })
+    // index 0: most recent memory
+    // intentionally making it stupid by using less precise INT
+    // also we're not discrimination different enemies, making it further dumb
+    // stores "overshoot" amount (learn target) of x position
+
+    var maxJumpDist: Double = -1.0
+
+    var cooltime: Second = 5f
+
+    override fun update(actor: HumanoidNPC, delta: Float) {
+        // sensor: compare(my X pos, nearest enemy's X pos)
+        maxJumpDist = actor.avSpeedCap * actor.jumpAirTime // speed * air_time
+        // (to be precise, we need simulation just like jumpAirTime, but oh well; we like it LINEAR)
+
+
+        // TEST: just target player
+        val playerXPos = Terrarum.ingame!!.player.centrePosPoint.x
+        val thisXPos = actor.centrePosPoint.x
+        val xDiff = thisXPos - playerXPos
+
+
+
+        // extrapolate from memories:
+        // otherwise linear extp. except the slope is d of 0th and 2nd point
+
+
+
+        if (xDiff > 0) {
+            actor.moveLeft()
+        }
+    }
+
+
+
+
 }