[crossfire] Unbalanced spell types

[Andreas Kirschbaum]

5FJust committed the changes. I only fixed area affecting spells; bolt
spells are still broken.


Mark Wedel wrote:
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      Andreas Kirschbaum wrote:
     
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      > I think the damage should be scaled down by the monster size
     
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      > (measured in tiles it occupies). This would mean a spell deals full
     
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      > damage only if it hits the whole monster (i.e. the spell covers all
     
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      > monster tiles).
     
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      Do note you need to cover rounding issues. In the case of the greater
     
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      demon (42 spaces), that could be a considerable amount of damage.
     
     
I added this by simulating a float effect by randomly giving an
additional damage point. Now on average it should do correct
(fractional) damage.


>
     
      And ideally, this should be handled after damage (or maybe as part of)
     
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      damage reduction from protections is taken into account, since that also
     
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      has rounding errors (but I think those might have been fixed by randomly
     
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      determing if the remainder does damage).
     
     
I added the damage reduction code after all other damage calculations
are done, just before the "hp -= dam" statement. Therefore no rounding
issues should be present.