starlit  Diff

Differences From Artifact [818384c4da]:

• File mods/vtlib/math.lua — part of check-in [e905f495dc] at 2024-05-07 23:16:29 on branch trunk — fix some bugs, start work on actually using the tier system, add usage docs (user: lexi, size: 4564) [annotate] [blame] [check-ins using]

To Artifact [3e36361725]:

• File mods/vtlib/math.lua — part of check-in [2e501ef0db] at 2024-05-15 20:37:58 on branch trunk — add chem radiator, add dummy radiator props to underfloor heater, complete (?) unfinished radiator API, fix longstanding LED offset buggery & crash, fix asset filename issue for LEDs, fix broken vector func (user: lexi, size: 4562) [annotate] [blame] [check-ins using]

     4      4   fn.vsep = function(vec) -- separate a vector into a direction + magnitude
     5      5   	return vec:normalize(), vec:length()
     6      6   end
     7      7   
     8      8   -- minetest now only provides the version of this function that sqrts the result
     9      9   -- which is pointlessly wasteful much of the time
    10     10   fn.vdsq = function(a,b)
    11         -	local d = vector.subtract(v1,v2)
           11  +	local d = vector.subtract(a,b)
    12     12   	return (d.x ^ 2) + (d.y ^ 2) + (d.z ^ 2)
    13     13   end
    14     14   
    15     15   fn.vdcomp = function(dist,v1,v2) -- compare the distance between two points
    16     16   	-- (cheaper than calculating distance outright)
    17     17   	local d if v2
    18     18   		then d = vector.subtract(v1,v2)