Yet more script rearranging

Data/Scripts/011_Battle/004_AI/001_PokeBattle_AI.rb

@@ -0,0 +1,69 @@
+# AI skill levels:
+#     0:     Wild Pokémon
+#     1-31:  Basic trainer (young/inexperienced)
+#     32-47: Some skill
+#     48-99: High skill
+#     100+:  Best trainers (Gym Leaders, Elite Four, Champion)
+# NOTE: A trainer's skill value can range from 0-255, but by default only four
+#       distinct skill levels exist. The skill value is typically the same as
+#       the trainer's base money value.
+module PBTrainerAI
+  # Minimum skill level to be in each AI category.
+  def self.minimumSkill; return 1;   end
+  def self.mediumSkill;  return 32;  end
+  def self.highSkill;    return 48;  end
+  def self.bestSkill;    return 100; end
+end
+
+
+
+class PokeBattle_AI
+  def initialize(battle)
+    @battle = battle
+  end
+
+  def pbAIRandom(x); return rand(x); end
+
+  def pbStdDev(choices)
+    sum = 0
+    n   = 0
+    choices.each do |c|
+      sum += c[1]
+      n   += 1
+    end
+    return 0 if n<2
+    mean = sum.to_f/n.to_f
+    varianceTimesN = 0
+    choices.each do |c|
+      next if c[1]<=0
+      deviation = c[1].to_f-mean
+      varianceTimesN += deviation*deviation
+    end
+    # Using population standard deviation
+    # [(n-1) makes it a sample std dev, would be 0 with only 1 sample]
+    return Math.sqrt(varianceTimesN/n)
+  end
+
+  #=============================================================================
+  # Decide whether the opponent should Mega Evolve their Pokémon
+  #=============================================================================
+  def pbEnemyShouldMegaEvolve?(idxBattler)
+    battler = @battle.battlers[idxBattler]
+    if @battle.pbCanMegaEvolve?(idxBattler)   # Simple "always should if possible"
+      PBDebug.log("[AI] #{battler.pbThis} (#{idxBattler}) will Mega Evolve")
+      return true
+    end
+    return false
+  end
+
+  #=============================================================================
+  # Choose an action
+  #=============================================================================
+  def pbDefaultChooseEnemyCommand(idxBattler)
+    return if pbEnemyShouldUseItem?(idxBattler)
+    return if pbEnemyShouldWithdraw?(idxBattler)
+    return if @battle.pbAutoFightMenu(idxBattler)
+    @battle.pbRegisterMegaEvolution(idxBattler) if pbEnemyShouldMegaEvolve?(idxBattler)
+    pbChooseMoves(idxBattler)
+  end
+end