Game Logic in XML Files

<dialogue id="101" condition="!npc.carsFixed">
  <message>Man, fix my car!</message>
  <choices>
    <choice condition="hero.carFixingSkill > 5" priority="7" id="Sure!">
      <command>hero.carFixingSkills += 1</command>
      <command>npc.carFixed = true</command>
      <command>hero.playSmokeAnimation()</command>
      <command>nextDialogue = 104</command>
    </choice>
    <choice condition="hero.carFixingSkill <= 5" id="I can't...">
      <command>nextDialogue = 105</command>
    </choice>
    <choice id="Fix it yourself">
      <command>npc.likesHero -= 1</command>
    </choice>
  </choices>
</dialogue>

def dialogue101
  if !npc.carsFixed
    showMessage("Man, fix my car!")
    choices = []
    if hero.carFixingSkill > 5
      choices.push(Choice.new("Sure!", 7))
    else
      choices.push(Choice.new("I can't"))
    end
    choices.push(Choice.new("Fix it yourself"))
    choices = selectTopPriority(choices) if choices.size > 4
    result = showChoices(choices)
    case result
    when "Sure"
      hero.carFixingSkills += 1
      npc.carFixed = true
      hero.playSmokeAnimation
      dialogue104
    when "I can't"
      dialogue105
    when "Fix it yourself"
      npc.likesHero -= 1
    end
  end
end

<category>
<pattern>WHAT ARE YOU</pattern>
<template>
    <think><set name="topic">Me</set></think>
    I am the latest result in artificial intelligence,
    which can reproduce the capabilities of the human brain
    with greater speed and accuracy.
</template>