math.randomseed(os.time())

local map_generator = require "final_map"
local lovebird = require "lib.lovebird"
local lume = require "lib.lume"
local running_average = require "lib.running_average"
local simplex_map = require "lib.simplex_map"

local map

love.load = function()
  map = map_generator.generate()
  print("Min Temperature", map.temperature.min, "Average", running_average.track("minT", map.temperature.min))
  print("Max Temperature", map.temperature.max, "Average", running_average.track("maxT", map.temperature.max))

  -- if true then return end

  -- lower temperature by half height
  -- NOTE ruins "normalization" but that's fine once we have "real" numbers to work with
  -- for x = 0, map.temperature.w do
  --   for y = 0, map.temperature.h do
  --     map.temperature[x][y] = math.max(0, map.temperature[x][y] - map.altitude[x][y] / 2)
  --   end
  -- end
  -- heightmap.normalize(map.temperature, -89.2, 56.7)

  -- modify temperature by latitude
  -- TODO would be more efficient to calculate Y in outer loop, since X does not change the distance
  -- NOTE only subtracts temperature, which further "ruins normalization" and makes everything too cold:
  -- local center_y = map.size / 2
  -- for x = 0, map.temperature.w do
  --   for y = 0, map.temperature.h do
  --     local distance = math.abs(y - center_y)
  --     map.temperature[x][y] = lume.clamp(map.temperature[x][y] - distance / map.size, 0, 1)
  --   end
  -- end
  -- heightmap.normalize(map.temperature, -89.2, 56.7)

  -- increase humidity by half temperature
  -- for x = 0, map.humidity.w do
  --   for y = 0, map.humidity.h do
  --     map.humidity[x][y] = math.min(1, map.humidity[x][y] + map.temperature[x][y] / 2)
  --   end
  -- end
  -- heightmap.normalize(map.humidity, 18, 3240)
end

local camera = {
  x = 0, y = 0,
  speed = 500,
}
love.update = function(dt)
  lovebird.update()

  if love.keyboard.isDown("w") then
    camera.y = camera.y - camera.speed * dt
  end
  if love.keyboard.isDown("s") then
    camera.y = camera.y + camera.speed * dt
  end
  if love.keyboard.isDown("a") then
    camera.x = camera.x - camera.speed * dt
  end
  if love.keyboard.isDown("d") then
    camera.x = camera.x + camera.speed * dt
  end
end

local window_width, window_height = love.graphics.getDimensions()
love.draw = function()
  love.graphics.translate(window_width / 2 - (map.size * map.tile_size) / 2 - camera.x, window_height / 2 - (map.size * map.tile_size) / 2 - camera.y)

  for x = 1, map.size do
    for y = 1, map.size do
      local value = map.biome[x][y]
      -- local value = map.temperature[x][y]
      if value then
        love.graphics.setColor(value)
        -- 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
  end
end

love.keypressed = function(key)
  if key == "escape" then
    love.event.quit()
  elseif key == "r" then
    love.load()
  elseif key == "t" then
    print(running_average.count("minT"))
  elseif key == "=" then
    map.tile_size = map.tile_size * 2
  elseif key == "-" then
    map.tile_size = map.tile_size / 2
  end
end