; ------------------------------------------------------------
;
;   PureBasic - MouseRayCast
;
;    (c) Fantaisie Software
;
; ------------------------------------------------------------
;



#CameraSpeed = 0.4
#N = 2
Enumeration
  #MainWindow
  #Editor
EndEnumeration

Define.f KeyX, KeyY, MouseX, MouseY, RatioX, RatioY

InitEngine3D()
InitSprite()
InitKeyboard()
InitMouse()

ExamineDesktops():dx=DesktopWidth(0)*0.8:dy=DesktopHeight(0)*0.8
OpenWindow(0, 0,0, DesktopUnscaledX(dx),DesktopUnscaledY(dy), " MouseRayCast - [Esc] quit",#PB_Window_ScreenCentered)
OpenWindowedScreen(WindowID(0), 0, 0, dx, dy, 0, 0, 0)

Add3DArchive(#PB_Compiler_Home + "examples/3d/Data/Textures", #PB_3DArchive_FileSystem)
Add3DArchive(#PB_Compiler_Home + "examples/3d/Data/Models", #PB_3DArchive_FileSystem)
Add3DArchive(#PB_Compiler_Home + "examples/3d/Data/Scripts", #PB_3DArchive_FileSystem)
Add3DArchive(#PB_Compiler_Home + "examples/3d/Data/GUI", #PB_3DArchive_FileSystem)
Parse3DScripts()

KeyboardMode(#PB_Keyboard_International)

WorldDebug(#PB_World_DebugEntity)

;-Materials
;
GetScriptMaterial(0, "Color/Blue")
GetScriptMaterial(1, "Color/Green")
GetScriptMaterial(2, "Color/Red")
GetScriptMaterial(3, "Color/Yellow")
CreateMaterial(4, LoadTexture(0, "Dirt.jpg"))


;-Meshes
;
CreateCube(0, 2)
CreateSphere(1, 1)
CreateCylinder(2, 1, 4)
CreatePlane(3, 20, 20, 1, 1, 1, 1)
LoadMesh(4, "PureBasic.mesh")
LoadMesh(10, "robot.mesh")
LoadMesh(11, "ninja.mesh")

;-Entities
;

CreateEntity(1, MeshID(1), MaterialID(1), -4,  1,  0)
CreateEntity(2, MeshID(2), MaterialID(0),  0,  2, -4)
CreateEntity(3, MeshID(0), MaterialID(3), 10,  1, 13)
CreateEntity(5, MeshID(4), MaterialID(2),  0,  0,  0)
CreateEntity(6, MeshID(0), MaterialID(0), 14,  1,  0)

ScaleEntity(3, 8, 1, 1)
RotateEntity(3, 0, 34, 0)
ScaleEntity(5, 0.1, 0.1, 0.1)


;-Robot
CreateEntity(10, MeshID(10), #PB_Material_None, -1, -1.5, 5)
ScaleEntity(10, 0.05, 0.05, 0.05)
StartEntityAnimation(10, "Walk")

;-Ninja
CreateEntity(11, MeshID(11), #PB_Material_None, 6, -1.5, 12)
ScaleEntity(11, 0.02, 0.02, 0.02)
RotateEntity(11,0, 70, 0)
StartEntityAnimation(11, "Walk")

;-Nodes
;
CreateNode(0, 3, 0, 0)
AttachNodeObject(0, EntityID(5))

CreateNode(1, 0, 0, 1)
AttachNodeObject(0, NodeID(1))
MoveNode(0, 0, 1, 0)

;-Camera
;
CreateCamera(0, 0, 0, 100, 100)
CameraBackColor(0, RGB(40, 30, 60))
MoveCamera(0, -1, 8, 15, #PB_Absolute)
CameraLookAt(0, -1, 0, 0)

;-Light
;
CreateLight(0, RGB(255, 255, 255), 1560, 900, 500)
AmbientColor(RGB(50, 50, 50))

;-GUI
;
RatioX = CameraViewWidth(0) / 1920
RatioY = CameraViewHeight(0) / 1080
OpenWindow3D(#MainWindow, 0, 0, 420 * RatioX, 110 * RatioY, "MouseRayCast")
StringGadget3D(#Editor, 10 * RatioX, 20 * RatioY, 360 * RatioX, 40 * RatioY, "", #PB_String3D_ReadOnly)

ShowGUI(128, 1)

MouseLocate(CameraViewWidth(0)/2, CameraViewHeight(0)/2)

Repeat
  While WindowEvent():Wend
  
  Repeat
    Event3D = WindowEvent3D()
  Until Event3D = 0
  
  If ExamineMouse()
    InputEvent3D(MouseX(), MouseY(), MouseButton(#PB_MouseButton_Left))
    MouseX = -MouseDeltaX() * #CameraSpeed * 0.5
    MouseY = -MouseDeltaY() * #CameraSpeed * 0.5
    Mx = MouseX()
    My = MouseY()
  EndIf
  
  If ExamineKeyboard()    
    KeyX = (KeyboardPushed(#PB_Key_Right)-KeyboardPushed(#PB_Key_Left))*#CameraSpeed
    Keyy = (KeyboardPushed(#PB_Key_Down)-KeyboardPushed(#PB_Key_Up))*#CameraSpeed        
  EndIf
  
  Entity = MouseRayCast(0, Mx, My,-1)
  
  If Entity>=0    
    CreateLine3D(11, PickX(), PickY(), PickZ(), RGB(255,255,0),
                 PickX() + NormalX()*#N,
                 PickY() + NormalY()*#N,
                 PickZ() + NormalZ()*#N, RGB(255,255,0))
    
    SetGadgetText3D(#Editor, "Entity = " + Str(Entity))
  Else
    If IsMesh(11)
      FreeMesh(11)
    EndIf
    SetGadgetText3D(#Editor, "I'm looking...")
  EndIf
  
  RotateNode(0, 0, 1, 0, #PB_Relative)
  
  RotateCamera(0, MouseY, MouseX, 0, #PB_Relative)
  MoveCamera  (0, KeyX, 0, KeyY)
  
  RenderWorld()
  FlipBuffers()
Until KeyboardPushed(#PB_Key_Escape) Or Quit = 1