fixed the camera so its motion is no longer tied to framerate

limited minimum and maximum zoom on camera
changed point scaling so that cities get smaller when zooming in
changed selection cursor to hollow circle
changed capital cities to orange squares
included data/earth/ directory so that files are loaded from there when they're not available in the mod folder
when cities are hidden, hovering over travel nodes will display the travel node location (broken for now)
when cities and travel nodes are hidden, hovering over ai markers will display their details
made the information boxes more opaque
changed border-calculating code so that it works with higher resolutions

.gitignore

@@ -0,0 +1 @@
+build/

ai.lua

@@ -1,13 +1,27 @@
 --Manage the AI nodes used by DEFCON.
-local t = {}
 local bmp = require 'bmp'
 local lg = assert( love.graphics )
+local locationQuery = require 'locationQuery'
+
+local t = setmetatable( {}, {__index = locationQuery } )
 local print = print
 
+local aiNode = {}
+local mtAiNode = { __index = aiNode }
+
+function aiNode:formatDisplayInfo()
+  return ([[AI NODE: %d
+    LONGITUDE: %3.2f
+    LATITUDE: %3.2f
+    ATTACKING: %s
+    ]]):format( self.idx, self.x, self.y, tostring(self.attacking) )
+end
+
 function t.load( filename )
   local img, imgd = bmp.load( filename )
   local nodes = { 
     visible = true,
+    all = {},
     att = {},
     ptsAtt = {},
     def = {},
@@ -16,15 +30,19 @@ function t.load( filename )
     imgd = imgd }
 
   print( "=== Loading AI Markers: ===" )
+  local idx = 1
   for x = 0, 511 do
     for y = 0, 284 do
       local r, g = imgd:getPixel( x, 284 - y )
       if r > 0.5 or g > 0.5 then
         local long = x * (360 / imgd:getWidth()) - 180
         local lat = y * (200 / img:getHeight()) - 100
-        local set = (r > 0.5) and nodes.att or nodes.def
-        set[#set + 1] = {x = long, y = lat}
-        print( #set, long, lat )
+        local attacking = (r > 0.5)
+        local set = attacking and nodes.att or nodes.def
+        local node = setmetatable( {x = long, y = lat, attacking = attacking, idx = idx}, mtAiNode )
+        nodes.all[ idx ] = node
+        set[#set + 1] = node
+        idx = idx + 1
       end
     end
   end
@@ -43,7 +61,13 @@ function t.load( filename )
     end
   end
   
-return setmetatable( nodes, {__index = t } )
+  nodes.all = locationQuery.New( nodes.all )
+  setmetatable( nodes, {__index = t } )
+  return nodes
+end
+
+function t.selectNearest( nodes, x, y )
+  return (nodes.all):getClosestPoint( x, y )
 end
 
 function t.draw( nodes )

camera.lua

@@ -20,12 +20,12 @@ function Camera.GetNodeCoordinate( x, y )
   return tfNodes:inverseTransformPoint( x, y )
 end
 
-function Camera.Zoom( out )
-  local scale = out and 1.1 or 0.9  
-  tf:scale( scale, scale )
-  local x = Camera.x
-  local y = Camera.y
-  return Camera.Set( x, y, Camera.w * scale, Camera.h * scale )
+function Camera.Zoom( delta )
+  local scale = 1.0 + delta
+  if Camera.zoom < 25.0 and delta > 0 or   --zooming in
+     Camera.zoom > 0.5 and delta < 0 then --zooming out
+    return Camera.Set( Camera.x , Camera.y, Camera.w * scale, Camera.h * scale )
+  end
 end
 
 function Camera.Translate( x, y )
@@ -36,9 +36,8 @@ end
 
 --In world coordinates: top left corner at x, y, extent of w, h.
 function Camera.Set( x, y, w, h )
-  print( ("CAMERA: %3.2f %3.2f %3.2f %3.2f"):format(x, y, w, h) )
   Camera.x, Camera.y, Camera.w, Camera.h = x, y, w, h
-  Camera.zoom = w / 360
+  Camera.zoom = w / 800
   tf:reset()
   tf:scale( w / 360, -h / 200 )
   tf:translate( 180 - x, -y - 100 )

cities.lua

@@ -23,26 +23,40 @@ function t.unlockSelection()
 end
 
 function t.draw()
-  if cities.visible then lg.points( points ) end
+  return lg.points( points )
 end
 
-function t.drawSelected( r )
-  if not cities.visible then return end
+function t.drawSelected( )
   local c  = t.selected
   if not c then return end
-  lg.circle( "fill", c.x, c.y, r )
+  lg.circle( "line", c.x, c.y, 1.0 )
 end
 
 function t.drawCapitals()
   if cities.visible then lg.points( caps ) end
 end
 
-function t.selectNearestCity(x, y)
-  if not t.selectionLocked then t.selected = cities:getClosestPoint(x, y) end
+function t.selectNearest( cities, x, y )
+  return cities:getClosestPoint(x, y)  --defer to locationQuery
+end
+
+local city = {}
+local citymt = {__index = city}
+function city:formatDisplayInfo()
+  return (
+    [[
+    NAME:    %s
+    COUNTRY:   %s
+    LONGITUDE: %3.2f
+    LATITUDE:  %3.2f
+    POP:       %d
+    CAPITAL:   %s]]):format( self.name, self.country, self.x, self.y, self.pop, tostring(self.capital) )
 end
 
 function t.load( filename )
   
+  print( "=== LOADING CITIES. ===" )
+
   cities = { visible = true, active = false }
   local n = 1
   local idxPts = 1
@@ -51,12 +65,13 @@ function t.load( filename )
   for line in assert( lfs.lines( filename ), "Error: could not open cities.dat" ) do
 
     local _, _, x, y, pop, capital = line:sub( 83 ):find( "(%g+)%s+(%g+)%s+(%g+)%s+(%g+)" )
+    if capital then --check against empty or malformed line
       x, y, pop, capital = tonumber( x ), tonumber( y ), tonumber( pop ), ( tonumber( capital ) > 0)
-    local city = {
+      local city = setmetatable({
         name = line:sub( 1, 39 ):gsub("%s+$",""),
         country = line:sub( 42, 82 ):gsub("%s+$",""),
         x = x, y = y, pop = pop, capital = capital
-    }
+      }, citymt )
       cities[n]  = city
       n = n + 1
 
@@ -67,13 +82,16 @@ function t.load( filename )
         caps[idxCaps], caps[idxCaps + 1] = x, y
         idxCaps = idxCaps + 2
       end
+    else
+      print( "CITIES: malformed line:", line )
+    end
   end
 
   --Multiple inheritance.
   cities = locationQuery.New( cities )
   setmetatable( getmetatable( cities ).__index, {__index = t } )
 
-  print( "LOADED", filename, n )
+  print( "=== CITIES LOADED:", filename, n, "===" )
   return cities
 end
 

conf.lua

@@ -11,7 +11,7 @@ function love.conf(t)
     t.audio.mixwithsystem = true        -- Keep background music playing when opening LOVE (boolean, iOS and Android only)
 
     t.window.title = "dcEarth"          -- The window title (string)
-    t.window.icon = "favicon.png"       -- Filepath to an image to use as the window's icon (string)
+    t.window.icon = "icons/favicon.png" -- Filepath to an image to use as the window's icon (string)
     t.window.width = 800                -- The window width (number)
     t.window.height = 600               -- The window height (number)
     t.window.borderless = false         -- Remove all border visuals from the window (boolean)
@@ -44,7 +44,7 @@ function love.conf(t)
     t.modules.sound = false             -- Enable the sound module (boolean)
     t.modules.system = true             -- Enable the system module (boolean)
     t.modules.thread = false            -- Enable the thread module (boolean)
-    t.modules.timer = false             -- Enable the timer module (boolean), Disabling it will result 0 delta time in love.update
+    t.modules.timer = true             -- Enable the timer module (boolean), Disabling it will result 0 delta time in love.update
     t.modules.touch = false             -- Enable the touch module (boolean)
     t.modules.video = false             -- Enable the video module (boolean)
     t.modules.window = true             -- Enable the window module (boolean)

lines.lua

@@ -9,18 +9,27 @@ function t.load( filename )
   local n = 0
   local k = 1
   for line in assert( lfs.lines( filename ) ) do
-    if line == "b" then
+    if line:find "b" then
       k = 1
-      n = n + 1
+      if #poly > 2 then n = n + 1 end
       poly = {}
       polys[n] = poly
     else
       local _, _, x, y = line:find( "(%g+)%s+(%g+)" )
-      x, y = assert( tonumber( x ) ), assert( tonumber( y ) )
+      x, y = tonumber( x ), tonumber( y )
+      if x and y then 
         poly[k], poly[ k + 1 ] = x, y
         k = k + 2
+      else
+        print( "LINES: malformed line:", filename, line )
       end
     end
+  end
+  
+  if not polys[n] or (#(polys[n]) < 3) then
+    polys[n] = nil
+    n = n - 1
+  end
 
   print( "LOADED", filename, n )
   return setmetatable( polys, {__index = t } )

locationQuery.lua

@@ -1,7 +1,6 @@
 --Shitty acceleration structure: get closest point in set.
 --Assumed to be in world coordinates: ( -180, 180 ) x ( -100, 100 )
 local t = {}
-local hashes = {}
 local math = math
 
 local hash = function( x, y, debug )
@@ -9,9 +8,18 @@ local hash = function( x, y, debug )
   return s
 end
 
+function t.getHashes( points )
+  return assert( points.hashes )
+end
+
 function t.getClosestPoint( points, x, y )
+  local hashes = t.getHashes( points )
   local closePoints = hashes[hash( x, y )]
-  if not closePoints then return end
+  
+  if not closePoints then
+    return
+  end
+  
   local distance = math.huge
   local px, py, point
   for k, v in pairs(closePoints) do
@@ -29,6 +37,7 @@ function t.getClosestPoint( points, x, y )
 end
 
 function t.Edit( points, point, x, y )
+  local hashes = t.getHashes( points )
   local h = hashes[hash( point.x, point.y )]
   if h then
     for i, p in pairs(h) do
@@ -50,13 +59,21 @@ function t.Add( points, x, y )
 end
 
 function t.New( points )
+  local hashes = {}
   for i = 1, #points do
     local x, y = points[i].x, points[i].y
     local h = hash( x, y )
     hashes[h] = hashes[h] or {}
     hashes[h][#hashes[h] + 1] = points[i]
   end
-  return setmetatable( points, {__index = t } )
+  points.hashes = hashes
+  
+  do
+    local count = 0
+    for k, v in pairs(hashes) do count = count + 1 end
+    print( "LOCATION QUERY. Points:", count )
+  end
+  return setmetatable( points, {__index = t} )
 end
 
 return t

main.lua

@@ -1,4 +1,5 @@
 local love = assert( love, "This tool requires LOVE: love2d.org" )
+--assert( require('mobdebug') ).start() --remote debugger
 local map = require 'map'
 local button = require 'button'
 local SAVEDIRECTORY = "out/"
@@ -11,21 +12,25 @@ function love.load()
   lfs.setIdentity( "dcearth", false )
   assert( lfs.createDirectory( SAVEDIRECTORY.."data/earth" ))
   assert( lfs.createDirectory( SAVEDIRECTORY.."data/graphics" ))
-  map.load()
 
 
   love.graphics.setNewFont( 12, "mono" )
 end
 
+function love.directorydropped( path )
+  love.filesystem.mount( path, "" )
+  return map.load( path )
+end
+
 function love.update( dt )
   local tx, ty = 0, 0
   local moveCamera = false
-  if love.keyboard.isScancodeDown( "w" ) then moveCamera = true; ty = ty + 1 end
-  if love.keyboard.isScancodeDown( "a" ) then moveCamera = true; tx = tx - 1 end
-  if love.keyboard.isScancodeDown( "s" ) then moveCamera = true; ty = ty - 1 end
-  if love.keyboard.isScancodeDown( "d" ) then moveCamera = true; tx = tx + 1 end
-  if love.keyboard.isScancodeDown( "q" ) then Camera.Zoom( true ) end
-  if love.keyboard.isScancodeDown( "e" ) then Camera.Zoom( false ) end
+  if love.keyboard.isScancodeDown( "w" ) then moveCamera = true; ty = ty + 30 * dt end
+  if love.keyboard.isScancodeDown( "a" ) then moveCamera = true; tx = tx - 30 * dt end
+  if love.keyboard.isScancodeDown( "s" ) then moveCamera = true; ty = ty - 30 * dt end
+  if love.keyboard.isScancodeDown( "d" ) then moveCamera = true; tx = tx + 30 * dt end
+  if love.keyboard.isScancodeDown( "q" ) then Camera.Zoom( dt ) end
+  if love.keyboard.isScancodeDown( "e" ) then Camera.Zoom( -dt ) end
   if moveCamera then Camera.Translate( tx, ty ) end
 
 
@@ -57,6 +62,10 @@ local layerButtons = {
 
 
 function love.draw()
+  if not map.loaded then
+    return love.graphics.print( "Drag and drop folder to begin.")
+  end
+
   love.graphics.push( "all" )
   map.draw()
   love.graphics.pop()
@@ -76,7 +85,7 @@ function love.draw()
   local wx, wy = Camera.GetWorldCoordinate( x, y )
   local bx, by = Camera.GetBitmapCoordinate( x, y )
   local h = love.graphics.getHeight() - 30
-  love.graphics.setColor( 0.2, 0.1, 0.1, 0.5 )
+  love.graphics.setColor( 0.2, 0.1, 0.1, 1.0 )
   love.graphics.rectangle( "fill", 0, h, love.graphics.getWidth() / 2, 30 )
   love.graphics.setColor( 1, 1, 1, 1 )
   love.graphics.rectangle( "line", 0, h, love.graphics.getWidth() / 2, 30 )
@@ -85,30 +94,13 @@ function love.draw()
 
   --Edit box.
   love.graphics.rectangle( "line", love.graphics.getWidth() / 2, h, love.graphics.getWidth() / 2, 30 )
-  if map.cities.selected then
-    local c = map.cities.selected
-    love.graphics.setColor( 0.2, 0.1, 0.1, 0.5 )
+  if map.selected then
+    love.graphics.setColor( 0.2, 0.1, 0.1, 1.0 )
     love.graphics.rectangle( "fill", 0, 0, 150 ,100 )    
     love.graphics.setColor( 1, 1, 1, 1 )
     love.graphics.rectangle( "line", 0, 0, 150 ,100 )   
     love.graphics.setColor( 1.2, 1.1, 1.1, 1.5 )
-    love.graphics.print( ("NAME: %s\nX: %3.2f\nY: %3.2f\nPOP: %d\nCAPITAL: %s\nCOUNTRY: %s"):format(c.name, c.x, c.y, c.pop, tostring(c.capital), c.country), 0, 0 )
-  elseif map.travelnodes.selected then
-    local c = map.travelnodes.selected
-    love.graphics.setColor( 0.2, 0.1, 0.1, 0.5 )
-    love.graphics.rectangle( "fill", 0, 0, 150 ,100 )    
-    love.graphics.setColor( 1, 1, 1, 1 )
-    love.graphics.rectangle( "line", 0, 0, 150 ,100 )   
-    love.graphics.setColor( 1.2, 1.1, 1.1, 1.5 )
-    love.graphics.print( ("Node: %d\nX: %3.2f\nY: %3.2f\n"):format(c.number, c.x, c.y) )
-  elseif map.ainodes.selectedNode then
-    local c = map.ainodes.selected
-    love.graphics.setColor( 0.2, 0.1, 0.1, 0.5 )
-    love.graphics.rectangle( "fill", 0, 0, 150 ,100 )    
-    love.graphics.setColor( 1, 1, 1, 1 )
-    love.graphics.rectangle( "line", 0, 0, 150 ,100 )   
-    love.graphics.setColor( 1.2, 1.1, 1.1, 1.5 )
-    love.graphics.print( ("Node: %d\nX: %3.2f\nY: %3.2f\noffensive: %s"):format(c.number, c.x, c.y, c.attack) )
+    love.graphics.print( map.selected:formatDisplayInfo(), 0, 0 )
   end
 end
 
@@ -117,21 +109,29 @@ function love.resize(w, h)
 end
 
 function love.wheelmoved(x, y)
-  Camera.Zoom( (y > 0) and true or false )
+  Camera.Zoom( (y > 0) and 0.5 or -0.5 )
 end
 
 function love.mousepressed( x, y, button, istouch, presses )
   local wx, wy = Camera.GetWorldCoordinate( x, y )
+  if map.loaded then
     if button == 1 then
       map.cities.lockSelection()
     else
       map.cities.unlockSelection()
     end
+  end
   print( ("MOUSE\tx %f\ty %f\twx %f\twy %f"):format(x, y, wx, wy) )
 end
 
 function love.mousemoved( x, y, dx, dy, istouch )
-  map.cities.selectNearestCity( Camera.GetWorldCoordinate( x, y ) )
+  local wx, wy = Camera.GetWorldCoordinate( x, y )
+  if map.loaded then 
+    if map.cities.visible then map.selected = map.cities:selectNearest( wx, wy )
+    elseif map.travelnodes.visible then map.selected = map.travelnodes:selectNearest( wx, wy )
+    elseif map.ainodes.visible then map.selected = map.ainodes:selectNearest( wx, wy )
+    end
+  end
 end
 
 local function ToggleVisibility( layer )
@@ -155,7 +155,9 @@ local layerVisibilityKeybinds = {
   ["8"] = "coastlines",
   ["9"] = "coastlinesLow",
   ["0"] = "international",
-  ["-"] = "cities"
+  ["-"] = "cities",
+  ["="] = "travelnodes",
+  ["backspace"] = "ainodes",
 }
 
 function love.keypressed(key)

map.lua

@@ -2,12 +2,12 @@ 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 Nodes = require 'travelNodes'
 local Camera = require 'camera'
 local Territory = require 'territory'
 
 local map = {  
+  loaded = false,
   coastlines = false,
   coastlinesLow = false,
   international = false,
@@ -21,11 +21,11 @@ local map = {
   },
   travelnodes = false,
   sailable = false,
-  aimarkers = false,
+  ainodes = false,
   cities = false
 }
 
-function map.load()
+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" )
@@ -36,10 +36,12 @@ function map.load()
   for k, v in pairs(map.territory) do
     map.territory[k] = Territory.load( "data/earth/"..k..".bmp", k )
   end
+  map.loaded = true
 end
 
 function map.draw()
   lg.clear( 0, 0, 0, 1 )
+  if not map.loaded then return end
 
   do --territory
     lg.setColor( 1,1,1,1)
@@ -55,13 +57,9 @@ function map.draw()
         v:drawBorder( "sea" )
       end
     end
-    if map.sailable.visible then map.sailable:draw() end
-    lg.setBlendMode( "alpha" )
+    if map.sailable.visible then 
+      map.sailable:draw()
 
-    lg.setColor( 1, 1, 1, 1 )
-  end
-  
-  do --borders
       lg.setLineJoin( "none" )
       lg.setLineWidth( 1 / Camera.zoom )
 
@@ -71,25 +69,35 @@ function map.draw()
       lg.setLineWidth( 3 / Camera.zoom )
       map.sailable:drawBorder( "placeable" )
     end
+    lg.setBlendMode( "alpha" )
 
+    lg.setColor( 1, 1, 1, 1 )
+  end
 
   do --all this stuff is drawn in world coordinates, ( -180, 180 ) x ( -100, 100 )
 
     lg.replaceTransform( Camera.tf )
     
-    do --points
+    if map.selected then
+      lg.setColor( 1.0, 0.5, 0.5, 0.9 )
+      lg.setLineJoin( "miter" )
+      lg.setLineWidth( 1.0 / Camera.zoom )
+      lg.circle( "line", map.selected.x, map.selected.y, 0.2 + 1.0 / Camera.zoom )
+    end
+
+    if map.cities.visible then --points
 
       lg.setColor( 1, 0, 0, 0.5 )
-      lg.setPointSize( 0.5 * Camera.zoom )
+      lg.setPointSize( 5.0 )
       map.cities.draw()
 
-      lg.setColor( 1, 1, 1.0, 0.5 )
-      lg.setPointSize( 1.0 * Camera.zoom )
+      lg.setColor( 1, 1, 0.0, 0.5 )
       map.cities.drawCapitals()
       
-      lg.setColor( 1, 1, 1, 0.5 )
-      map.cities.drawSelected( 15.0 / Camera.zoom )
+    end
 
+    if map.ainodes.visible then
+      lg.setPointSize( 5.0 )
       map.ainodes:draw()
     end
 
@@ -115,8 +123,11 @@ function map.draw()
 
     do --travel nodes
       lg.replaceTransform( Camera.tfNodes )
+      if map.travelnodes.visible then
         map.travelnodes:draw()
       end
+    end
+    
 
   end
 

territory.lua

@@ -109,8 +109,9 @@ function t.computeBorder( territory, threshold, key )
   local border = territory[key]
   local n = 1
 
-  for x = 0, 511 do
-    for y = 0, 284 do
+  local w, h = territory.imgd:getWidth() - 1, territory.imgd:getHeight() - 1
+  for x = 0, w do
+    for y = 0, h do
       --Bottom left, bottom right, and top right of pixel in image coordinates:
       local blx, bly = x, y + 1
       local brx, bry = x + 1, y + 1

travelNodes.lua

@@ -1,10 +1,13 @@
 --Manage the pathfinding nodes used by DEFCON.
 --This is important for a mapping tool because the DEFCON client will not load a map unless
 --the pathfinding nodes form a connected graph.
-local t = {}
+
 local bmp = require 'bmp'
+local locationQuery = require 'locationQuery'
 local lg = assert( love.graphics )
 
+
+local t = setmetatable({}, {__index = locationQuery})
 local isSailable
 
 local function isConnected( startNode, endNode )
@@ -25,15 +28,17 @@ local function isConnected( startNode, endNode )
   return true
 end
 
-function t.getClosest( nodes, x, y )
-  local d = math.huge
-  local closestNode
-  for _, node in pairs( nodes.nodes ) do
-    local nx, ny = node.x, node.y
-    local nd = (nx - x) * (nx - x) + (ny - y) * (ny - y)
-    if nd < d then d = nd; closestNode = node end
-  end
-  return closestNode
+function t.selectNearest( nodes, x, y )
+  return (nodes.nodes):getClosestPoint( x, y )
+end
+
+local travelNode = {}
+local mtTravelNode = { __index = travelNode }
+
+function travelNode:formatDisplayInfo()
+  return ([[  TRAVEL NODE: %d
+  LONGITUDE: %3.2f
+  LATITUDE: %3.2f]]):format( self.idx, self.x, self.y )
 end
 
 function t.load( filename, sailable )
@@ -49,10 +54,10 @@ function t.load( filename, sailable )
       if imgd:getPixel( x, 399 - y ) > 0 then
         local long = 360 * ( x - 800 ) / 800 - 360 / 2 + 360
         local lat = 360 * ( 600 / 800 ) * ( 600 - y ) / 600 - 180
-        nodes.nodes[n] = {x = long, y = lat}
+        nodes.nodes[n] = setmetatable({x = long, y = lat, idx = n}, mtTravelNode )
+        print( nodes.nodes[n]:formatDisplayInfo() )
         nodes.points[ 2 * n - 1 ] = long
         nodes.points[ 2 * n ] = lat
-        print( n, long, lat )
         n = n + 1
       end
     end
@@ -69,7 +74,9 @@ function t.load( filename, sailable )
   end
   
   print( "=== Nodes Loaded ===" )
-  return setmetatable( nodes, {__index = t } )
+  nodes.nodes = locationQuery.New( nodes.nodes )
+  setmetatable( nodes, {__index = t} )
+  return nodes
 end
 
 --Determine if graph has more than one connected component.
@@ -78,9 +85,13 @@ function t.isConnected( nodes )
 end
 
 function t.draw( nodes )
-  lg.setPointSize( 10 )
+  lg.setPointSize( 8 )
   lg.setColor( 1, 1, 1, 0.5 )
   lg.points( nodes.points )
+  return t.drawConnections( nodes )
+end
+
+function t.drawConnections( nodes )
   
   for i, connection in pairs( nodes.connections ) do
     for j in pairs( connection ) do
@@ -88,9 +99,6 @@ function t.draw( nodes )
       lg.line( ix, iy, fx, fy )
     end
   end
-end
-
-function t.drawConnections( nodes )
   
 end