#35 Weapon ranges

[Nigel Phillips]

All weapons seem to exhibit problems with range.
Specifically:
1. homing missiles are often fired at targets well out
of range.
2. Other weapons are sometimes not fired at the closest
enemy.
3. Rarely, a beam will be fired at an enemy a long way
away.

Homing missiles have been broken for a long while but
the other two may not have been seen before the 411639
branch.

[Nigel Phillips]

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Okay, isInRange wasn't being called for weapons on
quickmounts. But bugs remain (sigh).

[Nigel Phillips]

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Was doing homing missile range->fuel calc on wrong data.
Fixed in top-of-tree.

[Nigel Phillips]

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1 is fixed.(?)
2 and 3 hard to reproduce.

[Nigel Phillips]

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Fixed another prob where homing missiles would chase fast
units apparently well beyond where their fuel was supposed
to run out. (range->fuel calc done with wrong value for
speed!)

[Nigel Phillips]

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Just seen something that may be related to this: an
AI-controlled unit kept shooting himself with homing
missiles, at least it looked like that.