Sensing heat

[cardillan]

My attempt at implementing Anuken/Mindustry-Suggestions#6353.

As there isn't a heat field common to all blocks, I've added the ability to sense @heat to blocks that define the field, returning the value of the field as-is. Apparently, different blocks use different ranges for heat, so maybe adding a @heatCapacity or @maxHeat property might be useful, but I didn't want to go there as I don't understand the mechanism all that much. It should still be useful for map authors using world processors as it is.

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[EggleEgg]

how does this interact with nuclear reactor heat? it is primordial it does not reach values >1 to not break serpulo logic

[cardillan]

how does this interact with nuclear reactor heat? it is primordial it does not reach values >1 to not break serpulo logic

It doesn't change the heat values at all anywhere, I've only added the ability to sense them.

[EggleEgg]

I see now, HeatBlock is unchanged (nuclear reactor implements it) so sensing is (or should be) exactly the same. My concern was sensor heat returning values >1, as heatFrac()/heatOutput can reach up to 15. This would ve broken quite a lot of basic serpulo logic