WithStrangeAeons.Dialog

--[[
	Author: Raúl Roa
	Date  : 4/16/2013
]]

--[[ GLOBALS ]]

--[[ Time Management ]]
timeSteps	 		   = 0

--[[ Filesystem Settings ]]
dialogsDir 			   = "dialogs/"

--[[ UI Options ]]

--[[ Style ]]
backgroundImage        = nil
backgroundImageOffsetX = 0
backgroundImageOffsetY = 0
rgbR				   = 1
rgbG				   = 1
rgbB				   = 1

--[[ Primary Dialog ]]
dialogText            = nil
useTextFile           = false
textFileName 		  = nil

--[[ Alternate Dialog ]]
alternateDialogText   = nil
useAlternateTextFile  = false
altTextFileName		  = nil

--[[ Settings ]]
--General
dialogTime	 		   = 3

-- Style
fontType     		   = "arial"
fontSize 			   = 18

-- Multiple contacts
displayMax			   = 1
displayAfterNContacts  = 0
totalDisplays		   = 0
displayOnFirstContact  = false

ui = {   
		displayMax             = { order = 1,    type = "number", label = "Max Amount Of Displays" },
		dialogTime	 		   = { order = 2,    type = "number", label = "Time (secs) to be displayed" },
		dialogText	    	   = { order = 3,    type = "string", label = "Dialog Text" },
		useTextFile			   = { order = 4,    type = "bool",   label = "Use Text File?" },
		textFileName 		   = { order = 5,    type = "string", label = "Dialog File Name" },				
		displayAfterNContacts  = { order = 6,  	 type = "number", label = "Display Alternate Text after # contacts" },
		alternateDialogText	   = { order = 7,    type = "string", label = "Alternate Dialog Text" },	
		useAlternateTextFile   = { order = 8,  	 type = "bool",   label = "Use Alternate Text File?" },
		altTextFileName        = { order = 9,  	 type = "string", label = "Alternate Dialog File Name" },
		displayOnFirstContact  = { order = 10,   type = "bool",   label = "Display On First Contact?" },
		fontType     		   = { order = 11,   type = "string",  label = "Text Font Type" },
		fontSize			   = { order = 12,   type = "number", label = "Text Font Size" },
		backgroundImage        = { order = 13,   type = "string", label = "Background Image" },
		backgroundImageOffsetX = { order = 14,   type = "number", label = "Background Offset X" },
		backgroundImageOffsetY = { order = 15,   type = "number", label = "Background Offset Y" },
		rgbR				   = { order = 16,   type = "number", label = "Red" },
        rgbG				   = { order = 17,   type = "number", label = "Green" },
        rgbB				   = { order = 18,   type = "number", label = "Blue" },
	}

--[[ LOCALS ]]
local thisFont 		 = nil
local active         = false
local destroy		 = false
local playedOnce     = false
local dialogContacts = 0
local lastHitTime    = 0   
local renderText	 = true
 
-- #
function init()
	-- RR: Initializing the font
	if( fontType == nil ) then
		fontType = "arial"
	end
	thisFont = Font( fontType, fontSize )

	--RR: Loading the main text from the file
	if( useTextFile ) then		
		if( textFileName ~= nil and textFileName ~= "" ) then
			dialogText = loadText( textFileName )
		end
	end

	--RR: Loading the alt text from the file
	if( useAlternateTextFile ) then
		if( altTextFileName ~= nil and altTextFileName ~= "" ) then
			alternateDialogText = loadText( altTextFileName )
		end
	end

	--RR: Loading background image
	if( ( backgroundImage ~= nil ) and ( backgroundImage ~= "" ) ) then
		thisBackground = Image( backgroundImage )
	end

	--RR: Setting the dialog time
	timeSteps = dialogTime
end

function beginContact( collidedWith )
	if( collidedWith:isType( "Player" ) and not destroy ) then
		if( g.activeDialog ~= this.id ) then
			--RR: Only account for hits if there's certain time difference between them. 2 secs will be ok			
			if( g.os.clock() - lastHitTime > 2 ) then
				lastHitTime	   = g.os.clock()
				dialogContacts = dialogContacts + 1
			end	
			--RR: Setting the alternate text		
			if( ( displayAfterNContacts > 0 ) and ( dialogContacts > 0 ) and ( dialogContacts % displayAfterNContacts == 0 ) ) then
				renderText = true
				if( alternateDialogText ~= nil and alternateDialogText ~= "" ) then
					dialogText = alternateDialogText
				end
			elseif( ( displayAfterNContacts > 0 ) and ( displayOnFirstContact ) ) then			
				--RR: First contact now turn off. I don't want to come here again
				displayOnFirstContact = false
				renderText = true

				dialogText = alternateDialogText
			elseif ( displayAfterNContacts > 0 ) then
				renderText = false
			end

			--RR: Can I render?
			if( renderText ) then
				--RR: Setup			
				g.activeDialog = this.id
				playedOnce	   = true
				timeSteps 	   = dialogTime
				active 	  	   = true
				totalDisplays  = totalDisplays + 1
			end			
		end	
	end
end

-- #1
function update( dt )
	if( ( g.activeDialog ~= this.id ) or ( g.paused ) ) then
		timeSteps  = 0
		active 	   = false
	end

	--RR:Symphony of Destruction!
	if( destroy ) then		
		this:destroy()
	end
end

-- #2
function render( dt )
	if( active ) then
		local x = ( width()  / 2 ) - ( g.player.iconW )
		local y = ( height() / 2 ) - ( g.player.iconH )

		--RR: if there's a background image then render it
		if( thisBackground ~= nil ) then
			thisBackground:draw( x - backgroundImageOffsetX, y - backgroundImageOffsetY, 0, Image_COORDS_SCREEN_TOPLEFT )
		end

		--RR: This will set the text color
		drawLine( 0, 0, 0, 0, rgbR, rgbG, rgbB )
		thisFont:draw( x, y, dialogText )
	end
end

-- #3
function postUpdate( dt )
	if( timeSteps <= 0 ) then
		active = false

		-- RR: Globally saying this dialog is no longer active
		if( g.activeDialog == this.id ) then
			g.activeDialog = nil			
		end		

		--RR: The lifecycle of this actor is over. Remove it.
		if( ( playedOnce ) and ( displayMax > 0 ) and ( totalDisplays >= displayMax ) ) then
			destroy = true
		end			
	end

	--RR: Only reduce the time when active
	if( active ) then
		timeSteps = timeSteps - dt
	end
end

--EXTRA TOOLS
function loadText( path )
	if( path ~= nil ) and ( dialogsDir ~= nil ) then
		local filepath = dialogsDir .. path

		--RR: Using custom function to load file contents		
		return openTextfile( filepath )
	end
	return nil
end