如何控制技能能否使用？

雪流星

try this:
in Game_Battler line 588 change

1. return skill.battle_ok?

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to

1. 
   
2. if skill.id == n # n is the id of the skill
   
3.     if @hp*1.0/@maxhp < 0.2
   
4.       return true
   
5.     else
   
6.       return false
   
7.     end
   
8. else
   
9.     return skill.battle_ok?
   
10. end
    

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try it , i cannot test it right now, dont have VX by my side

forgot about float{/hx}