finally added simplex noise, but broke everything else

src/map_nextgen.lua

@@ -0,0 +1,76 @@
+-- NOTE the API of this file should probably change?
+
+local simplex = require "lib.simplex"
+
+local generate = function()
+  simplex.Seed(math.random())
+
+  local map = {}
+  map.size = 500
+  map.tile_size = 1 -- TODO tile_size really shouldn't be the responsibility of the map generator - it's a rendering detail, not a map feature
+  map.altitude = {} -- TEMP only one noise map
+
+  local scale = 0.005
+  local min, max = math.huge, -math.huge
+  for x = 1, map.size do
+    map.altitude[x] = {}
+    for y = 1, map.size do
+      local value = simplex.Noise2D(x * scale, y * scale)
+      if value > max then max = value end
+      if value < min then min = value end
+      map.altitude[x][y] = value
+    end
+  end
+  print("Altitude", "Min:", min, "Max:", max)
+
+  -- TEMP hacked in copy to fix the issue so I can make sure everything is correct aaa
+  local function min(t)
+    local r = t[1][1]
+    for i=1,#t do
+      for j=1,#t[1] do
+        if r > t[i][j] then r = t[i][j] end
+      end
+    end
+    return r
+  end
+  local function max(t)
+    local r = t[1][1]
+    for i=1,#t do
+      for j=1,#t[1] do
+        if r < t[i][j] then r = t[i][j] end
+      end
+    end
+    return r
+  end
+  local function normalize(map, new_min, new_max)
+    local minimum = min(map)
+    local initialRange = max(map) - minimum
+    local finalRange = new_max - new_min
+    for i = 1, #map do
+      for j = 1, #map[1] do
+        map[i][j] = (map[i][j] - minimum) / initialRange * finalRange + new_min
+      end
+    end
+    map.min = min(map)
+    map.max = max(map)
+    return map -- superfluous
+  end
+  normalize(map.altitude, 0, 1)
+
+  map.terrain = {}
+  for x = 1, map.size do
+    map.terrain[x] = {}
+    for y = 1, map.size do
+      local value = map.altitude[x][y]
+      map.terrain[x][y] = {value, value, value, 1}
+    end
+  end
+
+  -- NOTE this is missing the radius modifier, so it's a square map
+
+  return map
+end
+
+return {
+  generate = generate,
+}