Environmental hazards

Smoke checks top-point sphere on timer>2s unless tolerated. Lava heat depends on proximity mask, height, obstacles/riding and equipment heat resistance; day heat in Ashlands caps at first-damage threshold. Fire tolerance clears heat. Tick damage chooses full/first lava or ocean threshold and uses raw damage. Rain wetness, shield/roof, shelter/fire and resolved frost resistance determine cold/freezing/resting branches.