Question:
I have an integer that is initially 0 and, after calculations, often ends up between 0 - 99. The problem is that since early on in the game, it calculates out to 0 or 1 often, it gets assigned as a TrueClass or FalseClass instead of a numerical value, which messes up a future x > 0 comparison. Is there a built-in Ruby way to force the variable into being a Fixnum/Integer type or will I have to monkeypatch it?
Here is the code it applies to:
Step 10: Compute the Target's Magic Defense Multiplier
mdef_multi = self.mdef_multi # Step 11: Modify the Magic Defense Multiplier # If Toad mdef_multi = 0 if user.states.include?(11) # If Charging mdef_multi = 0 if user.states.include?(30) # If cast on self or PC onto PC # 0 if PC targetting PC mdef_multi = self.is_a?(Game_Actor) and user.is_a?(Game_Actor) ? 0 : mdef_multi # 99 MDef Multi if max MDef mdef_multi = self.is_a?(Game_Enemy) and mdef == 255 ? 99 : mdef_multi # If Solo Multiplier is enabled mdef_multi = obj.element_set.include?(26) ? 1 : mdef_multi # Step 12: Modify the Spell Multiplier hits = 0, missed = 0, evaded = 0 while spl_multi > 0 spl_multi -= 1 if rand(99) <= hit if mdef_multi > 0 The last line is where I run into the variable-type issue. It's technically RGSS2 from RPG Maker VX. And please excuse my horrid commenting and coding style.
Solution:1
First of all, Ruby doesn't auto-convert things, so your integer isn't getting converted to a boolean because it's 0 or 1.
Instead, what's happening is the line
mdef_multi = self.is_a?(Game_Actor) and user.is_a?(Game_Actor) ? 0 : mdef_multi is being parsed as
( mdef_multi = self.is_a?(Game_Actor) ) and user.is_a?(Game_Actor) ? 0 : mdef_multi because of the way and works. Basically = has higher precendence than and, so the variable is only being set to the result before the and, which is a true/false value. && has a higher precedence than = though, so using && here should work. For this reason, some Ruby programmers recommend only using &&, never and. See http://blog.jayfields.com/2007/08/ruby-operator-precedence-of-and-which.html for more explanation.
If you use && instead of and on this line and the next one, it should fix the problem.
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