dcearth/map.lua

local lg = love.graphics
local AI = require 'ai'
local Cities = require 'cities'
local Lines = require 'lines'
local Nodes = require 'nodes'
local Bitmap = require 'bmp'
local Camera = require 'camera'
local Territory = require 'territory'

local map = {
  coastlines = false,
  coastlinesLow = false,
  international = false,
  territory = {
    africa = false,
    europe = false,
    northamerica = false,
    russia = false,
    southamerica = false,
    southasia = false
  },
  travelnodes = false,
  sailable = false,
  aimarkers = false,
  cities = false
}

function map.load()
  map.cities = Cities.load( "data/earth/cities.dat" )
  map.coastlines = Lines.load( "data/earth/coastlines.dat" )
  map.coastlinesLow = Lines.load( "data/earth/coastlines-low.dat" )
  map.international = Lines.load( "data/earth/international.dat" )  
  map.sailable = Territory.load( "data/earth/sailable.bmp", "sailable" )
  map.travelnodes = Nodes.load( "data/earth/travel_nodes.bmp", map.sailable.isSailable ) --travel node adjacency matrix depends on sailable bitmap
  map.ainodes = AI.load( "data/earth/ai_markers.bmp" )
  for k, v in pairs(map.territory) do
    map.territory[k] = Territory.load( "data/earth/"..k..".bmp", k )
  end
end

function map.draw()
  lg.clear( 0, 0, 0, 1 )

  do --territory
    lg.setColor( 1,1,1,1)
    lg.setLineJoin( "none" )
    lg.replaceTransform( Camera.tfTerritory )
    lg.setBlendMode( "add" )
    for k, v in pairs(map.territory) do
      if v.visible then 
        v:draw()
        lg.setLineWidth( 1 / Camera.zoom )
        v:drawBorder( "land" )
        lg.setLineWidth( 3 / Camera.zoom )
        v:drawBorder( "sea" )
      end
    end
    if map.sailable.visible then map.sailable:draw() end
    lg.setBlendMode( "alpha" )
    
    lg.setColor( 1, 1, 1, 1 )
  end
  
  do --borders
    lg.setLineJoin( "none" )
    lg.setLineWidth( 1 / Camera.zoom )
    
    lg.setColor( 1, 1, 1, 0.5)
    map.sailable:drawBorder( "sailable" )
    
    lg.setLineWidth( 3 / Camera.zoom )
    map.sailable:drawBorder( "placeable" )
  end


  do --all this stuff is drawn in world coordinates, ( -180, 180 ) x ( -100, 100 )
    
    lg.replaceTransform( Camera.tf )

    do --points

      lg.setColor( 1, 0, 0, 0.5 )
      lg.setPointSize( 0.5 * Camera.zoom )
      map.cities.draw()

      lg.setColor( 1, 1, 1.0, 0.5 )
      lg.setPointSize( 1.0 * Camera.zoom )
      map.cities.drawCapitals()

      lg.setColor( 1, 1, 1, 0.5 )
      map.cities.drawSelected( 15.0 / Camera.zoom )
      
      map.ainodes:draw()
    end

    do  --line stuff
      lg.setColor(1, 1, 1, 0.2 )

      lg.setLineJoin( "miter" )
      lg.setLineWidth( 0.2 / Camera.zoom )
      map.international:draw()

      lg.setColor(1, 1, 1, 0.5 )
      map.coastlines:draw()
      map.coastlinesLow:draw()

      --International Date Line
      lg.line( -180, -100, -180, 100 )
      lg.line( 180, -100, 180, 100 )
      lg.line( -180, 90, 180, 90 )
      lg.line( -180, -90, 180, -90 )
      lg.line( -180, 100, 180, 100 )
      lg.line( -180, -100, 180, -100 )
    end
    
    do --travel nodes
      lg.replaceTransform( Camera.tfNodes )
      map.travelnodes:draw()
    end

  end

end

function map.save()
  map.cities.save()
  map.coastlines.save()
  map.coastlinesLow.save()
  map.international.save()
  map.sailable.save()
  map.travelnodes.save()
  map.ainodes.save()
  for k, v in pairs(map.territory) do
    map.territory[k].save()
  end
end

function map.hover(x, y)

end

return map