a more reasonable temperature range to START from

src/main.lua

@@ -3,11 +3,14 @@ math.randomseed(os.time())
 local map_generator = require "map_nextgen"
 local lovebird = require "lib.lovebird"
 local lume = require "lib.lume"
+local simplex_map = require "lib.simplex_map"
 
 local map
 
 love.load = function()
   map = map_generator.generate()
+  map.temperature.min = simplex_map.min(map.temperature)
+  map.temperature.max = simplex_map.max(map.temperature)
   print("Temperature Range", map.temperature.min, map.temperature.max)
 
   -- if true then return end
@@ -73,7 +76,7 @@ love.draw = function()
       local value = map.temperature[x][y]
       if value then
         -- love.graphics.setColor(value)
-        love.graphics.setColor( (value + 89.2) / (89.2 + 56.7) , 0, 0, 1)
+        love.graphics.setColor( (value + map.temperature.max) / (map.temperature.max + math.abs(map.temperature.min)) , 0, 0, 1)
         love.graphics.rectangle("fill", x * map.tile_size, y * map.tile_size, map.tile_size, map.tile_size)
       end
     end