Adding UI for city editing

conf.lua

@@ -12,7 +12,7 @@ function love.conf(t)
 
     t.window.title = "dcEarth"          -- The window title (string)
     t.window.icon = "icons/favicon.png" -- Filepath to an image to use as the window's icon (string)
-    t.window.width = 1000               -- The window width (number)
+    t.window.width = 1024               -- The window width (number)
     t.window.height = 640               -- The window height (number)
     t.window.borderless = false         -- Remove all border visuals from the window (boolean)
     t.window.resizable = true           -- Let the window be user-resizable (boolean)

main.lua

@@ -58,10 +58,7 @@ end
 function love.mousepressed( x, y, mouseButton, istouch, presses )
   local wx, wy = Camera.GetWorldCoordinate( x, y )
 
-  if button.selected and button.selected:contains( x, y ) then
-    button.callback( button.selected )
-    return button.selected:callback()
-  end
+  return button.mousepressed( x, y )
 end
 
 function love.mousemoved( x, y, dx, dy, istouch )
@@ -89,9 +86,6 @@ function love.keypressed(key, code, isRepeat)
   end
 end
 
-
-
-do
+function love.textinput()
   
 end
-

map/cities.lua

@@ -53,6 +53,48 @@ function city:formatDisplayInfo()
   CAPITAL:   %s]]):format( self.name, self.country, self.x, self.y, self.pop, tostring(self.capital) )
 end
 
+function city:delete()
+  
+end
+
+function city:add()
+  local n = #cities + 1
+  cities[ n ] = self
+  self.n = n
+  
+  local idxPoints = #points + 1
+  self.points = idxPoints
+  points[ idxPoints ], points[ idxPoints + 1 ] = self.x, self.y
+
+end
+
+function city:moveTo(x, y)
+  self.x, self.y = x, y
+  if self.points then
+    points[ self.points ] = x
+    points[ self.points + 1 ] = y
+  end
+  if self.capital then
+    caps[ self.caps ] = x
+    caps[ self.caps + 1 ] = y
+  end
+end
+
+function city:toggleCapital()
+  self.capital = not( self.capital )
+end
+
+function t.newCity( tbl )
+  return setmetatable({
+        name = "",
+        country = "",
+        x = 0,
+        y = 0,
+        pop = 0,
+        capital = false,
+      }, citymt )
+end
+
 function t.load( filename )
   
   print( "=== LOADING CITIES. ===" )
@@ -72,7 +114,8 @@ function t.load( filename )
       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
+        x = x, y = y, pop = pop, capital = capital, 
+        n = n, points = idxPts, caps = capital and idxCaps
       }, citymt )
       cities[n]  = city
       n = n + 1

ui/button.lua

@@ -4,12 +4,13 @@ local t = {
   name = "",
   tooltip = "",
   icon = false,
+  lit = false,
   x = 8,
   y = 250,
-  w = 176,
+  w = 13 * 28 - 4,
   h = 24,
-  group = "",
-  visible = true,
+  group = false,
+  visible = false,
   callback = function( self ) return print( "clicked button: ", self.name, self.x, self.y, self.w, self.h, self.visible ) end
 }
 t.selected, t.next, t.prev = t, t, t
@@ -52,7 +53,7 @@ function t.draw( b )
         0,
         b.h / h )
     end
-    if t.selected == b then
+    if b.lit or t.selected == b then
       b:highlight()
     end
   end
@@ -92,15 +93,27 @@ function t.selectPrevInGroup()
   repeat t.selectPrev() until group == t.selected.group
 end
 
-function t.displayGroup( group, show )
+--show/hide all buttons in a group
+--passing hide=true will hide the group, hide=false or nil will show the group
+--solo=true will hide all buttons outside the group
+function t.displayGroup( group, hide, solo )
   local b = t
   repeat 
     b = b.next
-    b.visible = ( b.group == group )
+    local inGroup = (group == b.group)
+    if solo or inGroup then
+      b.visible = not(hide) and inGroup
+    end
   until b == t
   t.visible = true
 end
 
+function t.mousepressed( x, y )
+  if t.selected and t.selected:contains( x, y ) then
+    return t.selected:callback()
+  end
+end
+
 function t.deselect( b )
   t.selected = t
 end

ui/loadmodal.lua

@@ -8,7 +8,7 @@ local loadLocation = false
 local folder = love.graphics.newImage( "icons/load.png" )
 folder:setFilter( "nearest", "nearest" )
 local loadButton = button.new{   
-  group = "loadModal",
+  group = t,
   name = "load",
   callback = function()
     if not loadLocation then return end
@@ -25,7 +25,7 @@ local loadButton = button.new{
 local xIcon = love.graphics.newImage( "icons/x.png" )
 xIcon:setFilter( "nearest", "nearest" )
 local cancelButton = button.new{
-  group = "loadModal",
+  group = t,
   name = "cancel load",
   visible = false,
   icon = xIcon,
@@ -41,7 +41,7 @@ function t.start()
   loadLocation = loadLocation or map.path
   button.selected = loadButton
   loadButton.name = "save to "..loadLocation
-  button.displayGroup( "loadModal", true )
+  button.displayGroup( t, true )
 end
 
 function t.draw()

ui/menu/cities.lua

@@ -1 +1,231 @@
+
+local love = assert( love )
+local lg = assert( love ).graphics
+local utf8 = require 'utf8'
+
+local button = require 'ui.button'
 local textinput = require 'ui.textinput'
+local modal = require 'ui.modal'
+local map = require 'map.map'
+local camera = require 'ui.camera'
+
+local t = {}
+local city
+
+
+local function keypressed( key, code, isRepeat )
+  if code == 'escape' then return modal.current:stop() end
+  if modal.previous then return modal.previous.keypressed( key, code, isRepeat ) end
+end
+
+--select modal: as normal, but clicking a city will proceed to the previously selected mode,
+--and clicking escape will clear the previously selected mode
+local selectModal = modal.new{}
+local textModal = modal.new{}
+local numberModal = modal.new{ cursor = 1 }
+local editModal = modal.new{ mousepressed = button.mousepressed, keypressed = keypressed, }
+local moveModal = modal.new{ mousepressed = button.mousepressed, keypressed = keypressed, mousemoved = button.selectIn }
+local deleteModal = modal.new{ mousepressed = button.mousepressed, keypressed = keypressed }
+local currentMode
+
+button.new{ name = "NEW CITY",
+  group = t,
+  icon = lg.newImage("icons/layer-cities.png"),
+  x = 615,
+  y = 0,
+  callback = function()
+    city = map.cities.newCity()
+    return editModal:start()
+  end
+}
+
+moveModal.button = button.new{ name = "MOVE CITY",
+  group = t,
+  x = 615,
+  y = 28,
+  callback = function( self )
+    self.lit = true
+    selectModal.mode = moveModal
+    return selectModal:start()
+  end,
+}
+
+editModal.button = button.new{ name = "EDIT CITY",
+  group = t,
+  x = 615,
+  y = 28 * 2,
+  callback = function( self ) 
+    self.lit = true
+    selectModal.mode = editModal
+    return selectModal:start()
+  end,
+}
+
+deleteModal.button = button.new{ name = "DELETE CITY",
+  group = t,
+  x = 615,
+  y = 28 * 3,
+  icon = lg.newImage("icons/x.png"),
+  callback = function( self ) 
+    self.lit = true
+    selectModal.mode = deleteModal
+    return selectModal:start()
+  end,
+}
+
+--editButtons
+local function editText( self )
+  print( "editing: ", self.field, city.name )
+  return textModal:start( self.field )
+end
+
+local function editNumber( self )
+  local field  = self.field
+end
+
+local editButtons = {
+
+  save = button.new{
+    icon = lg.newImage( "icons/save.png" ),
+    callback = function() print( "stop editing city" ) return editModal:stop() end,},
+
+
+  name = button.new{ callback = editText },
+  country = button.new{ callback = editText },
+  x = button.new{ callback = editNumber },
+  y = button.new{ callback = editNumber },
+  capital = button.new{ callback = function() if city then return city:toggleCapital() end end },
+}
+
+do
+  local i = 0
+  for key, b in pairs( editButtons ) do
+    b.field = key
+    b.name = key
+    b.group = editModal
+    b.x = 0
+    b.y = 28 * i
+    i = i + 1
+  end
+end
+
+function editModal:start()
+  modal.start( self )
+  button.displayGroup( self, false, true )
+  for k, b in pairs( editButtons ) do
+    b.name = city[k] or b.name
+  end
+end
+
+function editModal.draw()
+  return button:draw()
+end
+
+function moveModal.update( dt )
+  local x, y = love.mouse.getPosition()
+  if y > 200 and love.mouse.isDown( 1 ) then
+    local wx, wy = camera.GetWorldCoordinate( x, y )
+    city:moveTo( wx, wy )
+  end
+end
+
+function moveModal.mousemoved( x, y, dx, dy, istouch )
+  return button.selectIn( x, y )
+end
+
+function moveModal.mousepressed( x, y, mouseButton, istouch, presses )
+  if y < 200 then
+    moveModal:stop()
+    return button.mousepressed( x, y, mouseButton, istouch, presses )
+  end
+  if map.selected and mouseButton == 2 then
+    city = map.selected
+  end
+end
+
+function numberModal:start( field )
+  self.field = field
+  return modal.start( self )
+end
+
+function numberModal.keypressed( key, code, isrepeat )
+  if code == 'backspace' then end
+  if code == 'escape' then return numberModal:stop() end
+end
+
+function numberModal.textinput( char )
+  local str = tostring( city[ numberModal.field ] )
+  local plus = str..char
+  if tonumber( plus ) then
+    city[ numberModal.field ] = plus
+    editButtons[ numberModal.field ].name = plus
+  end
+end
+
+function textModal.textinput( char )
+  print( "text input: ", char )
+  city[textModal.field] = city[textModal.field] .. char
+  editButtons[textModal.field].name = city[textModal.field]
+end
+
+function textModal.mousepressed()
+end
+
+function textModal:stop()
+  self.field = nil
+  return modal.stop( self )
+end
+
+function textModal:start( field )
+  self.field = field
+  return modal.start( self )
+end
+
+
+function textModal.keypressed( key, code, isRepeat )
+  if code == "backspace" then
+    local text = city[textModal.field]
+    -- get the byte offset to the last UTF-8 character in the string.
+    local byteoffset = utf8.offset(text, -1)
+    print( "textmodal: backspace", byteoffset )
+
+    if byteoffset then
+      -- remove the last UTF-8 character.
+      -- string.sub operates on bytes rather than UTF-8 characters, so we couldn't do string.sub(text, 1, -2).
+      city[textModal.field] = text:sub( 1, byteoffset - 1)
+      editButtons[textModal.field].name = city[textModal.field]
+    end
+  end
+  if code == "escape" then
+    return textModal:stop()
+  end
+end
+
+function selectModal.keypressed( key, code, isRepeat )
+  if code == 'escape' then return selectModal:stop() end
+  if modal.previous then return modal.previous.keypressed( key, code, isRepeat ) end
+end
+
+function selectModal:stop()
+  local mode = selectModal.mode
+  if mode then
+    mode.button.lit = false
+  end
+  return modal.stop( self )
+end
+
+function selectModal.mousepressed( x, y, mouseButton, istouch, presses )
+  if y < 200 then
+    selectModal:stop()
+    return button.mousepressed( x, y, mouseButton, istouch, presses )
+  end
+
+  if map.selected then
+    city = map.selected
+    return selectModal.mode:start()
+  end
+end
+
+
+
+return t

ui/menu/mainmenu.lua

@@ -5,6 +5,7 @@ local savemodal = require 'ui.savemodal'
 local loadmodal = require 'ui.loadmodal'
 local Camera = require 'ui.camera'
 local map = require 'map.map'
+local t = {}
 
 local loadImg = love.graphics.newImage
 local layers = {
@@ -25,20 +26,23 @@ local layers = {
 
 button.new{
   name = "LOAD", x = 250, y = 0,
-  w = 28 * 13,
+  group = t,
   callback = loadmodal.start,
   icon = love.graphics.newImage( "icons/load.png" )}
 button.new{
   name = "SAVE", x = 250, y = 28,
-  w = 28 * 13,
+  group = t,
   callback = savemodal.start,
   icon = love.graphics.newImage( "icons/save.png" )}
 button.new{
   name = "UNDO", x = 250, y = 2 * 28,
-  w = 28 * 13,
+  group = t,
   callback = map.undo,
   icon = love.graphics.newImage( "icons/undo.bmp" ) }
 
+
+local editButtons = {}
+local layerButtons = {}
 local showButtons = {}
 local visibilityIcon = love.graphics.newImage( "icons/eye.bmp" )
 local function updateVisibilityIcons()
@@ -57,9 +61,17 @@ end
 
 local activeLayerButton
 local function back( self )
-  self.visible = false
-  map.setEditLayer()
+  activeLayerButton.lit = false
   activeLayerButton = nil
+  map.setEditLayer()
+  button.displayGroup( t, false, true )
+  for i, b in ipairs( editButtons ) do
+    b.visible = true
+  end
+  for i, b in ipairs( showButtons ) do
+    b.visible = true
+  end
+  self.visible = false
   return updateVisibilityIcons()
 end
 
@@ -68,13 +80,18 @@ local backButton = button.new{
   visible = false,
   y = 5 * 28,
   x = 250,
+  group = false,
   icon = love.graphics.newImage( "icons/up.bmp" ),
   callback = back,
 }
 
 local function editLayer( self )
+  self.lit = true
   map.setEditLayer( self.layer )
   activeLayerButton = self
+  if self.menu then
+    button.displayGroup( self.menu )
+  end
   backButton.visible = true
   return updateVisibilityIcons()
 end
@@ -86,11 +103,7 @@ local function copy( i, target )
   return target
 end
 
-
-local layerButtons = {}
 local x = 250
-local soloButtons = {}
-local editButtons = {}
 for i = 1, #layers do
   
   editButtons[i] = button.new( copy( i, { 
@@ -98,7 +111,7 @@ for i = 1, #layers do
         x = x + (button.h + 4) * ( i - 1 ),
         w = 24,
         callback = editLayer,
-        group = "edit",
+        group = editButtons,
         tooltip = "edit "..layers[i].layer
       }))
   layerButtons[ 2 * i - 2 ] = editButtons[i]
@@ -110,14 +123,13 @@ for i = 1, #layers do
         name = "",
         callback = toggleVisibleLayer,
         icon = visibilityIcon,
-        group = "show",
+        group = showButtons,
         tooltip = "show "..layers[i].layer
       }))
   layerButtons[ 2 * i - 1 ] = showButtons[i]
   
 end
 
-local t = {}
 
 function t.draw()
     --Status bar.
@@ -144,16 +156,22 @@ function t.draw()
   if map.selected then love.graphics.print( map.selected:formatDisplayInfo(), 0, 80 ) end
   if map.selectionLocked then end
 
-  love.graphics.setScissor( 0, 0, love.graphics.getWidth(), 200 )
+  love.graphics.setScissor( 250, 0, love.graphics.getWidth() - 250, 200 )
   love.graphics.rectangle( "line", 0, 0  , 250, 200 )
   love.graphics.rectangle( "line", 250, 0, love.graphics.getWidth() - 250, 200 )
+  love.graphics.rectangle( "line", 250, 0, button.w, 200 )
   
   
   love.graphics.setColor( 1, 1, 1, 0.8 )
   button:draw()
-  
   love.graphics.setColor( 1, 0, 0, 0.4 )
-  if activeLayerButton then activeLayerButton:highlight() end
+end
+
+do --button visibility
+  button.displayGroup( t, false, true )
+  button.displayGroup( editButtons, false, false )
+  button.displayGroup( layerButtons, false, false )
+  button.displayGroup( showButtons, false, false )
 end
 
 return t

ui/modal.lua

@@ -5,14 +5,17 @@ t.__index = t
 
 local i = 0
 function t.start( self )
+  print( "starting modal:", i + 1)
   love.graphics.setScissor(
     self.x or 0,
     self.y or 0,
     self.w or love.graphics.getWidth(),
-    self.h or love.graphics.getDimensions())
+    self.h or love.graphics.getHeight())
   
   i = i + 1
-  t[i] = t[i] or {}
+  t[i] = { modal = self }
+  t.previous = t[i]
+  t.current = self
   
   --store callbacks
   for name in pairs( self ) do
@@ -31,10 +34,11 @@ function t.start( self )
 end
 
 function t.stop( self )
+  print( "stopping modal:", i )
   --restore callbacks
   for name in pairs( self ) do
     if love[name] then
-      love[name] = t[i][name]
+      love[name] = t[i][name] or love[name]
     end
   end
   
@@ -43,12 +47,16 @@ function t.stop( self )
   button.deselect()
   repeat 
     b = b.next
-    b.visible = t[i][b] or false --accessing a button's nil field is an error, so make sure that b.visible is a boolean
+    b.visible = t[i][b] or false
   until b == button
   
+  
+  t.current = t[i].modal
   t[i] = nil
   i = i - 1
+  t.previous = t[i - 1]
   
+    love.graphics.setScissor(0, 0, love.graphics.getDimensions())
 end
 
 function t.new( modal )

ui/savemodal.lua

@@ -8,7 +8,7 @@ local saveLocation = false
 local floppy = love.graphics.newImage( "icons/save.png" )
 floppy:setFilter( "nearest", "nearest" )
 local saveButton = button.new{   
-  group = "saveModal",
+  group = t,
   name = "save",
   callback = function() map.save(); return t:stop() end,
   visible = false,
@@ -22,7 +22,7 @@ local saveButton = button.new{
 local xIcon = love.graphics.newImage( "icons/x.png" )
 xIcon:setFilter( "nearest", "nearest" )
 local cancelButton = button.new{
-  group = "saveModal",
+  group = t,
   name = "cancel",
   visible = false,
   icon = xIcon,
@@ -38,7 +38,7 @@ function t.start()
   saveLocation = saveLocation or map.path
   button.selected = saveButton
   saveButton.name = "save to "..saveLocation
-  button.displayGroup( "saveModal", true )
+  button.displayGroup( t, false, true )
 end
 
 function t.draw()

ui/textinput.lua

@@ -54,7 +54,7 @@ function t.keypressed(key, code, isRepeat)
     if byteoffset then
       -- remove the last UTF-8 character.
       -- string.sub operates on bytes rather than UTF-8 characters, so we couldn't do string.sub(text, 1, -2).
-      text = string.sub(text, 1, byteoffset - 1)
+      t.currentModal.currentField = text:sub( 1, byteoffset - 1)
     end
   end
   if code == "escape" then