' 2D Vewctor Object desinger.
' Looks a bit odd as ripped from another in-game designer.
'
' Copyright 2005 Ian Cowburn
'
' $Id$
'
Strict

Import noddybox.vectorgfx
Import noddybox.bitmapfont
Import noddybox.simplegui

' Included binaries
'
Incbin "font.bmf"
Incbin "pointer.png"


' Initialise
'
SeedRnd(MilliSecs())

SetGraphicsDriver GLMax2DDriver()
Graphics 800,600
HideMouse

SetBlend(ALPHABLEND)
SetAlpha(1.0)

' Globals
'
Global font:TBitmapFont=TBitmapFont.Load("incbin::font.bmf",0)
Global pointer:TImage=LoadImage("incbin::pointer.png",0)
TGUIFont.font=font

Global quit:Int=False
Global filename:String="default.vec2d"
Global scale:Double=1.0

' **** Main
'
If AppArgs.length>1
	DoDesigner(AppArgs[1])
Else
	DoDesigner(Null)
EndIf
EndGraphics
End


' **** Types
'
Type TDesObj Abstract
	Field selsize:Int
	
	Function LoadFromObject:TDesObj(o:Object) Abstract
	Method CreateForObject:Object() Abstract
	Method Draw(normals:Int) Abstract
	Method DrawSelect() Abstract
	Method MouseOver:Int(x:Int, y:Int) Abstract
	Method Drag(x:Int, y:Int, show:Int) Abstract
	Method Edit() Abstract
	Method SetInfo(w:TLabel) Abstract
	Method Snap() Abstract

	Method DrawSelBox(x:Double, y:Double)
		Local x1:Int=x*scale-selsize
		Local y1:Int=y*scale-selsize
		Local x2:Int=x*scale+selsize
		Local y2:Int=y*scale+selsize
		
		SetColor(255,255,255)
		DrawLine(x1,y1,x2,y1)
		DrawLine(x2,y1,x2,y2)
		DrawLine(x2,y2,x1,y2)
		DrawLine(x1,y2,x1,y1)
	End Method
	
	Method InSelBox(px:Double, py:Double, x:Double, y:Double)
		Local x1:Int=x*scale-selsize
		Local y1:Int=y*scale-selsize
		Local x2:Int=x*scale+selsize
		Local y2:Int=y*scale+selsize

		Return px>=x1 And px<=x2 And py>=y1 And py<=y2
	End Method
	
	Method DrawCoord(x:Int, y:Int)
		font.Draw(x+","+y,0,0)
	End Method

	Method DrawCoords(x1:Int, y1:Int, x2:Int, y2:Int)
		font.Draw(x1+","+y1+" -> "+x2+","+y2,0,0)
	End Method

	Method DoubleString:String(v:Double)
		Local s:String=v
		
		If s.Find(".")<>-1
			While s.length>1 And s[s.length-1]=Asc("0")
				s=s[..s.length-1]
			Wend
			
			While s.length>1 And s[s.length-1]=Asc(".")
				s=s[..s.length-1]
			Wend
		EndIf
		
		Return s
	End Method

	Method BoolString:String(b:Int)
		If b
			Return "Yes"
		Else
			Return "No "
		EndIf
	End Method
	
	Method CalcSnap:Int(p:Int)
		Return (p+(Designer.GRID/2*Sgn(p)))/Designer.GRID*Designer.GRID
	End Method
End Type

Type TDesLine Extends TDesObj
	Field p1:TDesPoint
	Field p2:TDesPoint
	Field r:Int
	Field g:Int
	Field b:Int
	Field id:Int
	
	Function Create:TDesLine(p1:TDesPoint,p2:TDesPoint)
		Local o:TDesLine=New TDesLine
		
		o.p1=p1
		o.p2=p2
		o.r=255
		o.g=255
		o.b=255
		o.selsize=3
		
		Return o
	End Function
	
	Function LoadFromObject:TDesObj(o:Object)
		Local lp:TVectorGfxLine=TVectorGfxLine(o)
		Local no:TDesLine=New TDesLine
		
		no.p1=FindPoint(lp.i1)
		no.p2=FindPoint(lp.i2)
		no.r=lp.r
		no.g=lp.g
		no.b=lp.b
		no.id=lp.id
		no.selsize=3
		
		Return no
	End Function
	
	Method CreateForObject:Object()
		Return TVectorGfxLine.Create(FindPointIndex(p1),FindPointIndex(p2),r,g,b,id)
	End Method
	
	Method CX:Double()
		Return p1.x+(p2.x-p1.x)/2.0
	End Method
	
	Method CY:Double()
		Return p1.y+(p2.y-p1.y)/2.0
	End Method
	
	Method Draw(normals:Int)
		If normals
			Local v:TVector=TVector.Create(p2.y-p1.y,p1.x-p2.x)
			v.Normalise()
			SetColor(r/2,g/2,b/2)
			DrawLine(CX()*scale,CY()*scale,CX()*scale+v.x*10,CY()*scale+v.y*10)
		EndIf

		SetColor(r,g,b)
		DrawLine(p1.lx()*scale,p1.ly()*scale,p2.lx()*scale,p2.ly()*scale)
	End Method
	
	Method DrawSelect()
		DrawSelBox(CX(),CY())
	End Method
	
	Method MouseOver:Int(x:Int, y:Int)
		Return InSelBox(x,y,CX(),CY())
	End Method
	
	Method Drag(x:Int, y:Int, show:Int)
		x:-CX()
		y:-CY()
		
		p1.x:+x
		p2.x:+x
		p1.y:+y
		p2.y:+y

		If show
			DrawCoords(p1.x,p1.y,p2.x,p2.y)
		EndIf
	End Method
	
	Method Edit()
		Designer.ld_red.text = r
		Designer.ld_green.text = g
		Designer.ld_blue.text = b
		Designer.ld_id.text = id

		If GUIDialog(Designer.ldialog,Designer.ld_ok,Designer.ld_cancel,pointer)
			r = Min(255,Designer.ld_red.text.ToInt())
			g = Min(255,Designer.ld_green.text.ToInt())
			b = Min(255,Designer.ld_blue.text.ToInt())
			id = Designer.ld_id.text.ToInt()
		EndIf
	End Method

	Method SetInfo(w:TLabel)
		w.text=p1.x+","+p1.y+" -> "+p2.x+","+p2.y+"  ID:"+id
	EndMethod

	Method Snap()
		p1.x=CalcSnap(p1.x)
		p1.y=CalcSnap(p1.y)
		p2.x=CalcSnap(p2.x)
		p2.y=CalcSnap(p2.y)
	End Method

	Method FlipNormal()
		Local t:TDesPoint=p1
		p1=p2
		p2=t
	End Method
End Type

Type TDesPoint Extends TDesObj
	Field x:Int
	Field y:Int
	Field dx:Double
	Field dy:Double
	
	Function Create:TDesObj(x:Int, y:Int)
		Local o:TDesPoint=New TDesPoint
		
		o.x=x
		o.y=y

		o.selsize=3
		
		Return o
	End Function
	
	Function LoadFromObject:TDesObj(o:Object)
		Local lp:TVectorGfxPoint=TVectorGfxPoint(o)
		Local no:TDesPoint=New TDesPoint
		
		no.x=lp.x
		no.y=lp.y
		no.selsize=3
		
		Return no
	End Function
	
	Method CreateForObject:Object()
		Return TVectorGfxPoint.Create(x,y)
	End Method
	
	Method Draw(normals:Int)
		SetColor(255,255,255)
		DrawRect(lx()*scale-1,ly()*scale-1,3,3)
	End Method
	
	Method DrawSelect()
		DrawSelBox(lx(),ly())
	End Method
	
	Method MouseOver:Int(x:Int, y:Int)
		Return InSelBox(x,y,self.x,self.y)
	End Method
	
	Method Drag(x:Int, y:Int, show:Int)
		self.x=x
		self.y=y
		If show
			DrawCoord(x,y)
		EndIf
	End Method
	
	Method DragDelta(x:Double, y:Double)
		dx=x
		dy=y
	End Method

	Method CompleteDragDelta()
		x=lx()
		y=ly()
		dx=0
		dy=0
	End Method

	Method Edit()
	End Method

	Method SetInfo(w:TLabel)
		w.text=x+","+y
	EndMethod

	Method Snap()
		x=CalcSnap(x)
		y=CalcSnap(y)
	End Method
	
	Method lx:Int()
		Return x+dx
	End Method
	
	Method ly:Int()
		Return y+dy
	End Method
End Type

' **** Globals
'
' This type acts as a namespace for global variables
'
Type Designer
	Global GRID:Int=5

	Global init:Int=False
	
	Global obj:TList
	
	Global gfx:TVectorGfxObject
	Global done:Int
	
	Global gui:TGUIHandler
	
	Global fname_txt:TLabel
	Global fname_load:TButton
	Global fname_save:TButton
	Global fname_new:TButton
	
	Global scale_number:TNumberInt
	Global grid_number:TNumberInt
	Global info:TLabel
	
	Global grid_check:TCheckbox
	Global normal_check:TCheckbox
	
	Global quitbut:TButton
	
	Global ldialog:TGUIHandler
	Global ld_red:TText
	Global ld_green:TText
	Global ld_blue:TText
	Global ld_id:TText
	Global ld_ok:TButton
	Global ld_cancel:TButton

	Function Initialise()
		If Not init
			Local l:TLabel
			Local p:TPanel
			
			obj =				CreateList()
			gfx =				New TVectorGfxObject
			gui =				TGUIHandler.Create()
			
			
			fname_txt =			TLabel.Create(gui,0,0,filename)
			fname_load =			TButton.Create(gui,0,15,50,17,"Load",LoadCallback)
			fname_save =			TButton.Create(gui,fname_load.x+fname_load.w+10,15,50,fname_load.h,"Save",SaveCallback)
			fname_new =			TButton.Create(gui,fname_save.x+fname_save.w+10,15,50,fname_load.h,"New",NewCallback)
			
			TLabel.Create(gui,0,40,"Scale")
			scale_number =		TNumberInt.Create(gui,70,40,ScaleCallback)
			scale_number.value=scale
			scale_number.minval=1
			scale_number.maxval=10
			scale_number.change=1
			
			TLabel.Create(gui,150,40,"Grid size")
			grid_number =			TNumberInt.Create(gui,220,40,GridSizeCallback)
			grid_number.value=GRID
			grid_number.minval=2
			grid_number.maxval=10
			grid_number.change=1
			
			info =				TLabel.Create(gui,0,50,"")
			
			grid_check =			TCheckbox.Create(gui,740,0,"Grid")
			normal_check =		TCheckbox.Create(gui,740,15,"Normals")
			grid_check.checked=	True
			
			quitbut =				TButton.Create(gui,750,570,49,29,"Quit",QuitCallback)

			ldialog =				TGUIHandler.Create()
			p =					TPanel.Create(ldialog,-1,-1,400,150)
			l =					TLabel.Create(ldialog,p.x+5,p.y+10,"Red:")
			ld_red =				TText.Create(ldialog,l.x+l.w+10,l.y,"",3,TText.NUMERIC|TText.INTEGER|TText.POSITIVE)
			l =					TLabel.Create(ldialog,p.x+5,p.y+30,"Green:")
			ld_green =			TText.Create(ldialog,l.x+l.w+10,l.y,"",3,TText.NUMERIC|TText.INTEGER|TText.POSITIVE)
			l =					TLabel.Create(ldialog,p.x+5,p.y+50,"Blue:")
			ld_blue =				TText.Create(ldialog,l.x+l.w+10,l.y,"",3,TText.NUMERIC|TText.INTEGER|TText.POSITIVE)
			l =					TLabel.Create(ldialog,p.x+5,p.y+70,"Collision ID:")
			ld_id =				TText.Create(ldialog,l.x+l.w+10,l.y,"",30,TText.NUMERIC|TText.INTEGER|TText.POSITIVE)
			ld_ok =				TButton.Create(ldialog,p.x+5,p.y+p.h-25,p.w/2-10,20,"OK",Null)
			ld_cancel =			TButton.Create(ldialog,p.x+p.w/2+5,p.y+p.h-25,p.w/2-10,20,"Cancel",Null)

			init=True
		EndIf
		
		done = False
		LoadObject()
	End Function
	
	Function SaveObject()
		Local lines:TList=CreateList()
		Local points:TList=CreateList()

		For Local d:TDesObj=EachIn obj
			If IsPoint(d)
				points.AddLast(d.CreateForObject())
			Else
				lines.AddLast(d.CreateForObject())
			EndIf
		Next

		gfx.SetPoints(points.ToArray())
		gfx.SetLines(lines.ToArray())
	End Function
	
	Function LoadObject()
		obj.Clear()
		For Local p:TVectorGfxPoint=EachIn gfx.points
			obj.AddLast(TDesPoint.LoadFromObject(p))
		Next
		For Local l:TVectorGfxLine=EachIn gfx.lines
			obj.AddLast(TDesLine.LoadFromObject(l))
		Next
	End Function
End Type


' **** Main Loop
'
Function DoDesigner(loadfile:String)
	Designer.Initialise()
	
	If loadfile
		Local o:TVectorGfxObject=TVectorGfxObject.Load(loadfile)
		
		If o<>Null
			filename=loadfile
			Designer.fname_txt.text=filename
			Designer.gfx=o
			Designer.gfx.x=0
			Designer.gfx.y=0
			Designer.gfx.ang=0
			Designer.LoadObject()
		Else
			GUINotify("Failed to load '" + Designer.fname_txt.text + "'",pointer)
		EndIf
	EndIf
	
	Designer.done=False
	
	Const NORMAL_MODE:Int=0
	Const LINE_MODE:Int=1
	Const DOT_TO_DOT_MODE:Int=2
	Const DOT_TO_DOT_SNAP_MODE:Int=3
	Const LINE_TO_LINE_MODE:Int=4
	
	Const DRAG_NONE:Int=0
	Const DRAG_SINGLE:Int=1
	Const DRAG_MULTI:Int=2
	
	Local sel:TDesObj=Null
	Local line_sel:TDesPoint=Null
	Local drag:Int=DRAG_NONE
	Local sellist:TList=CreateList()
	Local mode:Int=NORMAL_MODE
	
	Local dragx:Double
	Local dragy:Double
	
	While Not Designer.done
		Cls
		
		' **** START CENTRED
		'
		SetOrigin(GraphicsWidth()/2,GraphicsHeight()/2)
		
		If Designer.grid_check.checked
			SetAlpha(0.7)
			Local x:Int=0
			While x>-400
				x:-Designer.GRID
			Wend
			While x<=400
				If x=0
					SetColor(50,50,255)
				Else
					SetColor(50,50,128)
				EndIf
				DrawLine(x*scale,-300,x*scale,300)
				x:+Designer.GRID
			Wend
			Local y:Int=0
			While y>-300
				y:-Designer.GRID
			Wend
			While y<=300
				If y=0
					SetColor(50,50,255)
				Else
					SetColor(50,50,128)
				EndIf
				DrawLine(-400,y*scale,400,y*scale)
				y:+Designer.GRID
			Wend
			SetAlpha(1)
		EndIf
		
		Local x:Int=(MouseX()-GraphicsWidth()/2)
		Local y:Int=(MouseY()-GraphicsHeight()/2)
		
		If drag=DRAG_NONE
			sel=Null
		EndIf

		For Local o:TDesObj=EachIn Designer.obj
			o.Draw(Designer.normal_check.checked)
			
			If sel=Null And o.MouseOver(x,y)
				sel=o
			EndIf
		Next
		
		If sel<>Null
			sel.SetInfo(Designer.info)
			
			Select mode
				Case LINE_MODE
					sellist.Clear()
					sellist.AddLast(sel)
					If IsPoint(sel)
						If line_sel=Null
							line_sel=TDesPoint(sel)
						Else
							If sel<>line_sel
								mode=NORMAL_MODE
								Designer.obj.AddLast(TDesLine.Create(line_sel,TDesPoint(sel)))
							EndIf
						EndIf
					EndIf
				Case LINE_TO_LINE_MODE
					sellist.Clear()
					sellist.AddLast(sel)
					If IsPoint(sel)
						If line_sel=Null
							line_sel=TDesPoint(sel)
						Else
							If sel<>line_sel
								Designer.obj.AddLast(TDesLine.Create(line_sel,TDesPoint(sel)))
								line_sel=TDesPoint(sel)
							EndIf
						EndIf
					EndIf
				Case NORMAL_MODE
					If KeyDown(KEY_LSHIFT) Or KeyDown(KEY_RSHIFT)
						If IsPoint(sel) And Not sellist.Contains(sel)
							sellist.AddLast(sel)
						EndIf
					Else
						sellist.Clear()
						sellist.AddLast(sel)
					EndIf
			End Select
		Else
			If mode<>NORMAL_MODE Or (Not KeyDown(KEY_LSHIFT) And Not KeyDown(KEY_RSHIFT))
				sellist.Clear()
			EndIf
		EndIf
		
					
		For Local o:TDesObj=EachIn sellist
			o.DrawSelect()
		Next
		
		If drag=DRAG_SINGLE
			sel.Drag(x/scale,y/scale,True)
		ElseIf drag=DRAG_MULTI
			For Local o:TDesPoint=EachIn sellist
				o.DragDelta((x-dragx)/scale,(y-dragy)/scale)
			Next
		EndIf
		
		SetOrigin(0,0)
		'
		' **** END CENTRED
		
		If drag=DRAG_NONE And mode=NORMAL_MODE
			Designer.gui.EventLoop()
		EndIf
		
		If mode=NORMAL_MODE And KeyHit(KEY_MOUSERIGHT)
			If sellist.Count()>1
				Select GUIMenu("Point Menu",["Snap to grid","Delete"],MouseX(),MouseY(),pointer)
					Case 0
						For Local o:TDesPoint=EachIn sellist
							o.Snap()
						Next
						sellist.Clear()
					Case 1
						For Local o:TDesPoint=EachIn sellist
							Designer.obj.Remove(o)
							
							For Local d:TDesLine=EachIn Designer.obj
								If d<>Null And (d.p1=o Or d.p2=o)
									Designer.obj.Remove(d)
								EndIf
							Next
						Next
						sellist.Clear()
				EndSelect
			ElseIf sel<>Null
				If IsPoint(sel)
					Select GUIMenu("Point Menu",["Snap to grid","Delete"],MouseX(),MouseY(),pointer)
						Case 0
							sel.Snap()
						Case 1
							Designer.obj.Remove(sel)
							
							For Local d:TDesLine=EachIn Designer.obj
								If d<>Null And (d.p1=sel Or d.p2=sel)
									Designer.obj.Remove(d)
								EndIf
							Next
					End Select
				Else
					Local l:TDesLine=TDesLine(sel)
					Select GUIMenu("Line Menu",["Edit","Snap to grid","Flip","Delete"],MouseX(),MouseY(),pointer)
						Case 0
							l.Edit()
						Case 1
							l.Snap()
						Case 2
							l.FlipNormal()
						Case 3
							Designer.obj.Remove(l)
					End Select
				EndIf
			Else
				Select GUIMenu("Create Menu",["Create Point","Create Line","Create Points","Create Points (Snapped)","Create Lines"],MouseX(),MouseY(),pointer)
					Case 0
						Designer.obj.AddLast(TDesPoint.Create(x/scale,y/scale))
					Case 1
						sellist.Clear()
						sel=Null
						line_sel=Null
						mode=LINE_MODE
					Case 2
						sellist.Clear()
						sel=Null
						mode=DOT_TO_DOT_MODE
					Case 3
						sellist.Clear()
						sel=Null
						mode=DOT_TO_DOT_SNAP_MODE
					Case 4
						sellist.Clear()
						sel=Null
						line_sel=Null
						mode=LINE_TO_LINE_MODE
				End Select
			EndIf				
			sel=Null
		EndIf

		SetColor(255,255,255)
		
		Select mode
			Case NORMAL_MODE
				If drag=DRAG_NONE
					If KeyDown(KEY_MOUSELEFT)
						If sel<>Null And Not KeyDown(KEY_LSHIFT) And Not KeyDown(KEY_RSHIFT)
							drag=DRAG_SINGLE
						ElseIf (KeyDown(KEY_LSHIFT) Or KeyDown(KEY_RSHIFT)) And sellist.Count()>0
							drag=DRAG_MULTI
							dragx=x
							dragy=y
						EndIf
					EndIf
				Else
					If Not KeyDown(KEY_MOUSELEFT)
						If drag=DRAG_MULTI
							For Local o:TDesPoint=EachIn sellist
								o.CompleteDragDelta()
							Next
						EndIf

						drag=DRAG_NONE
					EndIf
				EndIf
				
			Case LINE_MODE
				If line_sel=Null
					Tip("Move to first point")
				Else
					Tip("Move to second point")
				EndIf
		
			Case DOT_TO_DOT_MODE
				Tip("Press Button to place")
				If KeyHit(KEY_MOUSELEFT)
					Local p:TDesPoint=TDesPoint(TDesPoint.Create(x/scale,y/scale))
					Designer.obj.AddLast(p)
				EndIf
				
			Case DOT_TO_DOT_SNAP_MODE
				Tip("Press Button to place")
				If KeyHit(KEY_MOUSELEFT)
					Local p:TDesPoint=TDesPoint(TDesPoint.Create(x/scale,y/scale))
					p.Snap()
					Designer.obj.AddLast(p)
				EndIf

			Case LINE_TO_LINE_MODE
				If line_sel=Null
					Tip("Move to first point")
				Else
					Tip("Move to next point")
				EndIf

		End Select
				
		If KeyHit(KEY_ESCAPE)
			mode=NORMAL_MODE
			FlushKeys()
		EndIf
			
		DrawImage(pointer,MouseX(),MouseY())
		
		Flip
		FlushMem
	Wend
End Function

Function Tip(s:String)
	font.Draw(s+" [ESC to cancel]",MouseX()+12,MouseY()+12)
End Function

Function IsLine:Int(o:Object)
	Local p:TDesLine=TDesLine(o)
	Return p<>Null
End Function

Function IsPoint:Int(o:Object)
	Local p:TDesPoint=TDesPoint(o)
	Return p<>Null
End Function

Function FindPoint:TDesPoint(i:Int)
	For Local o:Object=EachIn Designer.obj
		If IsPoint(o)
			If i=0
				Return TDesPoint(o)
			EndIf
			i:-1
		EndIf
	Next
	Return Null
End Function

Function FindPointIndex:Int(p:TDesPoint)
	Local i:Int=0

	For Local o:Object=EachIn Designer.obj
		If IsPoint(o)
			If o=p
				Return i
			EndIf
			i:+1
		EndIf
	Next
	
	Return 0
End Function


' **** Callbacks
'
Function QuitCallback(w:TWidget)
	Designer.done=GUIYesNo("Quit?",pointer)
End Function

Function LoadCallback(w:TWidget)
	Local fn:String=GUIFileSelect("Select object to load",filename,False,pointer)
	
	If fn<>Null
		Local o:TVectorGfxObject=TVectorGfxObject.Load(fn)
		
		If o<>Null
			filename=fn
			Designer.fname_txt.text=filename
			Designer.gfx=o
			Designer.gfx.x=0
			Designer.gfx.y=0
			Designer.gfx.ang=0
			Designer.LoadObject()
		Else
			GUINotify("Failed to load '" + Designer.fname_txt.text + "'",pointer)
		EndIf
	EndIf
End Function

Function SaveCallback(w:TWidget)
	Local fn:String=GUIFileSelect("Select object to save",filename,True,pointer)
	
	If fn<>Null
		filename=fn
		Designer.fname_txt.text=filename
		Designer.SaveObject()
		Designer.gfx.Save(filename)
	EndIf
End Function

Function NewCallback(w:TWidget)
	If GUIYesNo("Lose current object?",pointer)
		Designer.gfx=New TVectorGfxObject
		Designer.LoadObject()
	EndIf
End Function

Function ScaleCallback(w:TWidget)
	Local c:TNumberInt=TNumberInt(w)
	scale=c.value
End Function

Function GridSizeCallback(w:TWidget)
	Local c:TNumberInt=TNumberInt(w)
	Designer.GRID=c.value
End Function