random roam around AI

Former-commit-id: 5edf7e848f519d440ecb915b7d6e27e9ead8dd6f
Former-commit-id: e89bfcd8b443c77e88d5ec7090f836b77ae5f02b

src/net/torvald/terrarum/gameactors/ai/scripts/PokemonNPCAI.kt

@@ -8,13 +8,49 @@ package net.torvald.terrarum.gameactors.ai.scripts
 object PokemonNPCAI {
     operator fun invoke(): String = """
 
-counter = 1
+timeCounter = 0
+countMax = 0
+moveMode = math.random() >= 0.5 and "left" or "right"
+currentMode = "turn"
+
+function generateTurn()
+    return 4600 + 1250 * math.random()
+end
+
+function generateWalk()
+    return 568 + 342 * math.random()
+end
+
+
+
+countMax = generateTurn()
 
 function update(delta)
-    ai.moveRight()
-    print("delta", delta)
-    counter = counter + delta
-    print("testcounter", counter)
+    timeCounter = timeCounter + delta
+
+    if currentMode == "turn" then
+        -- wait
+        -- reset counter
+        if timeCounter >= countMax then
+            timeCounter = 0
+            currentMode = "move"
+            countMax = generateWalk()
+            moveMode = (moveMode == "left") and "right" or "left"
+        end
+    elseif currentMode == "move" then
+        -- move
+        if moveMode == "left" then
+            ai.moveLeft()
+        elseif moveMode == "right" then
+            ai.moveRight()
+        end
+        -- reset counter
+        if timeCounter >= countMax then
+            timeCounter = 0
+            currentMode = "turn"
+            countMax = generateTurn()
+        end
+    end
 end
 """
 }