How to delete 3d objects with left mouse click?

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Mark Garrett

Reviewed AGK on Steam

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Posted: 25th Feb 2018 21:11 Edited at: 25th Feb 2018 21:35

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Here I generate 200 different cubes, and I would like to delete any one that I click on... by moving my mouse arrow to each one, one by one, and clicking the left mouse button.
But I don't know what input command I should use. Any body have an idea how I could do it?

I know that 'GetSpriteHit(x,y) that works with sprites, ....... but is there a 'GetObjectHit(x,y) ' equivalent that works with objects?

// Project: Dr Destructo 1 
// Created: 2018-02-25

// show all errors
SetErrorMode(2)

SetClearColor(3,182,182)
// set window properties
SetWindowTitle( "Dr Destructo 1 " )
SetWindowSize( 1024, 768, 0 )
  
// set display properties
SetVirtualResolution( 1024, 768 )
SetOrientationAllowed( 1, 1, 1, 1 )
SetScissor(0,0,0,0)
 `____________________________ 
Create3DPhysicsWorld()
` default gravity is      0, - 10,  0
Set3DPhysicsGravity( 0, -.7 , 0)
`SetCameraPosition( cameraID, x, y, z )  
SetCameraPosition( 1, 0,0,-180 )
`SetCameraLookAt( cameraID, x, y, z, roll )
SetCameraLookAt( 1, 0,0,0, 0 )

`_________________Create floor using box shape
CreateObjectBox( 2, 500, 500,.001)
SetObjectColor( 2, 255, 255, 0, 255 )
RotateObjectLocalX( 2, 90 )
 
SetObjectPosition(2,0,-30,0)
Create3DPhysicsStaticBody( 2)

for obj = 3 to 200 
`___________________Create box
CreateObjectBox( obj,10,10,10)
`RotateObjectglobalY( obj, 66 )
SetObjectPosition( obj,5.1,30,0 )
Create3DPhysicsDynamicBody( obj)
SetObjectShapeBox(obj)

state = Random2(1,3)
select state
case 1	
SetObjectColor( obj, 0, 255, 0, 255 )
endcase
case 2
SetObjectColor( obj, 255, 0,255, 255 )
endcase
case 3
SetObjectColor( obj, 255, 255, 0, 0 )
endcase
endselect

next obj
  
do
   
      
    Print( ScreenFPS() )
  
    Step3DPhysicsWorld()
    Sync()
loop

+ Code Snippet

// Project: Dr Destructo 1 
// Created: 2018-02-25

// show all errors
SetErrorMode(2)

SetClearColor(3,182,182)
// set window properties
SetWindowTitle( "Dr Destructo 1 " )
SetWindowSize( 1024, 768, 0 )
  
// set display properties
SetVirtualResolution( 1024, 768 )
SetOrientationAllowed( 1, 1, 1, 1 )
SetScissor(0,0,0,0)
 `____________________________ 
Create3DPhysicsWorld()
` default gravity is      0, - 10,  0
Set3DPhysicsGravity( 0, -.7 , 0)
`SetCameraPosition( cameraID, x, y, z )  
SetCameraPosition( 1, 0,0,-180 )
`SetCameraLookAt( cameraID, x, y, z, roll )
SetCameraLookAt( 1, 0,0,0, 0 )


  `_________________Create floor using box shape
CreateObjectBox( 2, 500, 500,.001)
SetObjectColor( 2, 255, 255, 0, 255 )
RotateObjectLocalX( 2, 90 )
 
SetObjectPosition(2,0,-30,0)
Create3DPhysicsStaticBody( 2)
  


 for obj = 3 to 200 
`___________________Create box
CreateObjectBox( obj,10,10,10)
`RotateObjectglobalY( obj, 66 )
SetObjectPosition( obj,5.1,30,0 )
Create3DPhysicsDynamicBody( obj)
SetObjectShapeBox(obj)

 

state = Random2(1,3)
select state
case 1	
SetObjectColor( obj, 0, 255, 0, 255 )
endcase
case 2
SetObjectColor( obj, 255, 0,255, 255 )
endcase
case 3
SetObjectColor( obj, 255, 255, 0, 0 )
endcase
endselect




next obj
  
do
   
      
    Print( ScreenFPS() )
  
    Step3DPhysicsWorld()
    Sync()
loop

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PSY

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Posted: 25th Feb 2018 23:02 Edited at: 25th Feb 2018 23:08

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You need these:
https://www.appgamekit.com/documentation/Reference/3D/Get3DVectorXFromScreen.htm

Insert this code at the beginning of your do-loop ( this is the example code from the online help, slightly modified to meet your needs )

if GetRawMouseLeftReleased ()
// get the position of the pointer (mouse)
pointer_x = GetPointerX()
pointer_y = GetPointerY()

// get the x, y and z unit vectors based on the pointer position
unit_x# = Get3DVectorXFromScreen(pointer_x,pointer_y)
unit_y# = Get3DVectorYFromScreen(pointer_x,pointer_y)
unit_z# = Get3DVectorZFromScreen(pointer_x,pointer_y)

// calculate the start of the ray cast, which is the unit vector + the camera position
start_x# = unit_x# + 0
start_y# = unit_y# + 0
start_z# = unit_z# - 180

// calculate the end of the vector, which is the unit vector multiplied by the length of the ray cast and then add the camera position to it
end_x# = 500*unit_x# + 0
end_y# = 500*unit_y# + 0
end_z# = 500*unit_z# - 180

// determine which object has been hit
object_hit = ObjectRayCast(0,start_x#,start_y#,start_z#,end_x#,end_y#,end_z#)

// if an object has been hit then destroy it
if object_hit <> 0
DeleteObject ( object_hit )
endif
endif

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Coders don't die, they just gosub without return

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Mark Garrett

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Posted: 26th Feb 2018 19:12

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Wow, thanks, that's quite a answer, and I'm glad I didn't try to figure it out on my own. I really appreciate it.

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PSY

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Posted: 27th Feb 2018 13:50

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You're welcome

PSY LABS Games
Coders don't die, they just gosub without return

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Blendman

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Posted: 27th Feb 2018 15:20

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Hi
It seems it doesnt always work with an ortho camera (fov =0)?

AGK2 tier1 - http://www.dracaena-studio.com

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Posted: 28th Feb 2018 18:00 Edited at: 28th Feb 2018 18:03

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Probably because the code above does not update the camera location, but assumes a camera that stays in one place only. I would also add ScreenToWorldX to the pointer part of the code. Try this instead:

pointer_x = ScreenToWorldX (GetPointerX ( ))  // it's also important to have the screen position of the pointer actually correctly, so use ScreenToWorldX and Y !
       pointer_y = ScreenToWorldY ( GetPointerY ( ))

// get the x, y and z unit vectors based on the pointer position
        unit_x# = Get3DVectorXFromScreen(pointer_x,pointer_y)
        unit_y# = Get3DVectorYFromScreen(pointer_x,pointer_y)
        unit_z# = Get3DVectorZFromScreen(pointer_x,pointer_y)

// calculate the start of the ray cast, which is the unit vector + the camera position
        start_x# = unit_x# + GetCameraX(1) 
        start_y# = unit_y# + GetCameraY(1) 
        start_z# = unit_z# +  GetCameraZ(1)

// calculate the end of the vector, which is the unit vector multiplied by the length of the ray cast and then add the camera position to it
        end_x# = 800*unit_x# + GetCameraX(1) 
        end_y# = 800*unit_y# + GetCameraY(1)  
        end_z# = 800*unit_z# +  GetCameraZ(1) 
       // then check the object raycast :
       object_hit = ObjectRayCast(0,start_x#,start_y#,start_z#,end_x#,end_y#,end_z#)

+ Code Snippet

       pointer_x = ScreenToWorldX (GetPointerX ( ))  // it's also important to have the screen position of the pointer actually correctly, so use ScreenToWorldX and Y !
       pointer_y = ScreenToWorldY ( GetPointerY ( ))

        // get the x, y and z unit vectors based on the pointer position
        unit_x# = Get3DVectorXFromScreen(pointer_x,pointer_y)
        unit_y# = Get3DVectorYFromScreen(pointer_x,pointer_y)
        unit_z# = Get3DVectorZFromScreen(pointer_x,pointer_y)

        // calculate the start of the ray cast, which is the unit vector + the camera position
        start_x# = unit_x# + GetCameraX(1) 
        start_y# = unit_y# + GetCameraY(1) 
        start_z# = unit_z# +  GetCameraZ(1) 

        // calculate the end of the vector, which is the unit vector multiplied by the length of the ray cast and then add the camera position to it
        end_x# = 800*unit_x# + GetCameraX(1) 
        end_y# = 800*unit_y# + GetCameraY(1)  
        end_z# = 800*unit_z# +  GetCameraZ(1) 
       // then check the object raycast :
       object_hit = ObjectRayCast(0,start_x#,start_y#,start_z#,end_x#,end_y#,end_z#)

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Posted: 1st Mar 2018 12:24 Edited at: 1st Mar 2018 12:33

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Quote: "Hi
It seems it doesnt always work with an ortho camera (fov =0)?"

You need to take into account the distance of the camera from the origin point

+ Code Snippet

Function Distance3D(x1, y1, z1, x2, y2, z2)
	result as integer
	part1 = Pow((x2 - x1), 2)
	part2 = Pow((y2 - y1), 2)
	part3 = Pow((z2 - z1), 2)
	underRadical = part1 + part2 + part3
	result = Sqrt(underRadical)
EndFunction result

Function Object_RayCast(object_id, mouse_x, mouse_y)
	
	unit_x# = Get3DVectorXFromScreen(mouse_x, mouse_y)
	unit_y# = Get3DVectorYFromScreen(mouse_x, mouse_y)
	unit_z# = Get3DVectorZFromScreen(mouse_x, mouse_y)
	
	cam_x# = GetCameraX(1)
	cam_y# = GetCameraY(1)
	cam_z# = GetCameraZ(1)  
	
	dist=Distance3D(cam_x#, cam_y#, cam_z#, 0, 0, 0)*2
	
	start_x# = unit_x# + cam_x#
	start_y# = unit_y# + cam_y#
	start_z# = unit_z# + cam_z#
	
	end_x# = dist*unit_x# + cam_x#
	end_y# = dist*unit_y# + cam_y#
	end_z# = dist*unit_z# + cam_z#

	hit_object_id = ObjectRayCast(object_id, start_x#, start_y#, start_z#, end_x#, end_y#, end_z#)

EndFunction hit_object_id

Here is a working example using both ortho and freeflight camera

#Constant KEY_A GetRawKeyState(65)
#Constant KEY_D GetRawKeyState(68)
#Constant KEY_S GetRawKeyState(83)
#Constant KEY_W  GetRawKeyState(87)
#Constant KEY_R  GetRawKeyPressed(82)
#Constant KEY_SHIFT GetRawKeyState(16)

// create some spheres and position them randomly
for i = 1 to 100
	CreateObjectSphere(i,20,16,16)
	SetObjectPosition(i, random(0,500), random(0,500), random(0,500))
	SetObjectColor(i,0,255,0,255)
next i

// position the camera and have it look at the centre of the "map"
SetCameraPosition(1,0,500,0)
SetCameraLookAt(1,0,0,0,0)

do
	
	// toggle freeflight
	if KEY_R 
		if g_View.free_flight
			g_View.free_flight=0
			// reset camera position
			SetCameraPosition(1,100,200,-100)
			SetCameraLookAt(1,100,0,100,0)
		else
			g_View.free_flight=1
		endif
	endif
	
	// handle view movement
	if g_View.free_flight
		View_HandleFreeFlightMovement()
	else	
		View_HandleFixedMovement()
	endif
	
	// get the position of the pointer (mouse)
	pointer_x = GetPointerX()
	pointer_y = GetPointerY()

// determine which object has been hit
	object_hit = Object_RayCast(0, pointer_x, pointer_y)

// if an object has been hit then turn it red
	if object_hit <> 0
		
		// select object
		if GetRawMouseLeftPressed()
			// turn all the objects green
			for i = 1 to 100
				if GetObjectExists(i)
					SetObjectColor(i,0,255,0,255)
				endif
			next i
			// turn selected object red
			SetObjectColor(object_hit,255,0,0,255)
		endif
		
		// delete object
		if GetRawMouseRightPressed()
			DeleteObject(object_hit)
		endif
	endif

Print( "Click & Drag to rotate camera" )
	Print( "WSAD: Move Camera XZ" )
	Print( "Mouse Wheel: Move Camera Y" )
    Print( "LMB: Select object" )
    Print( "RMB: Delete object" )
	Print( "R: Free Flight ("+Str(g_View.free_flight)+")" )

Sync()
loop

// View helper functions
Type t_View
	drag_start_x as float
	drag_start_y as float
	drag_ang_x as float
	drag_ang_y as float
	free_flight
EndType
Global g_View as t_View
Function View_HandleFreeFlightMovement()
	
	if KEY_A then MoveCameraLocalX(1, -10)
	if KEY_D then MoveCameraLocalX(1, 10)
	if KEY_S then MoveCameraLocalZ(1, -10)
	if KEY_W then MoveCameraLocalZ(1, 10)

if GetRawMouseWheelDelta()>0 then MoveCameraLocalY(1, 10)
	if GetRawMouseWheelDelta()<0 then MoveCameraLocalY(1, -10)
	
	if ( GetPointerPressed())
		g_View.drag_start_x = GetPointerX()
		g_View.drag_start_y = GetPointerY()
		g_View.drag_ang_x = GetCameraAngleX(1)
		g_View.drag_ang_y = GetCameraAngleY(1)	
	endif
	
	diff_x as float
	diff_y as float
	new_x as float 
	
	if ( GetPointerState() = 1 )
		diff_x = (GetPointerX() - g_View.drag_start_x)/12.0
		diff_y = (GetPointerY() - g_View.drag_start_y)/12.0
		new_x = g_View.drag_ang_x + diff_y
		if ( new_x > 89 ) then new_x = 89
		if ( new_x < -89 ) then new_x = -89
		SetCameraRotation( 1, new_x, g_View.drag_ang_y + diff_x, 0 )
	endif

EndFunction
Function View_HandleFixedMovement()
	
	if KEY_A then MoveCameraLocalX(1, -10)
	if KEY_D then MoveCameraLocalX(1, 10)
	if KEY_S then MoveCameraLocalY(1, -10)
	if KEY_W then MoveCameraLocalY(1, 10)
	
	mouse_speed=100
	if KEY_SHIFT
		mouse_speed=60
	endif
    if GetRawMouseWheelDelta()>0 then MoveCameraLocalZ(1, mouse_speed )
	if GetRawMouseWheelDelta()<0 then MoveCameraLocalZ(1, -mouse_speed )
	
EndFunction

Function Distance3D(x1, y1, z1, x2, y2, z2)
	result as integer
	part1 = Pow((x2 - x1), 2)
	part2 = Pow((y2 - y1), 2)
	part3 = Pow((z2 - z1), 2)
	underRadical = part1 + part2 + part3
	result = Sqrt(underRadical)
EndFunction result
Function Object_RayCast(object_id, mouse_x, mouse_y)
	
	unit_x# = Get3DVectorXFromScreen(mouse_x, mouse_y)
	unit_y# = Get3DVectorYFromScreen(mouse_x, mouse_y)
	unit_z# = Get3DVectorZFromScreen(mouse_x, mouse_y)
	
	cam_x# = GetCameraX(1)
	cam_y# = GetCameraY(1)
	cam_z# = GetCameraZ(1)  
	
	dist=Distance3D(cam_x#, cam_y#, cam_z#, 0, 0, 0)*2
	
	start_x# = unit_x# + cam_x#
	start_y# = unit_y# + cam_y#
	start_z# = unit_z# + cam_z#
	
	end_x# = dist*unit_x# + cam_x#
	end_y# = dist*unit_y# + cam_y#
	end_z# = dist*unit_z# + cam_z#

hit_object_id = ObjectRayCast(object_id, start_x#, start_y#, start_z#, end_x#, end_y#, end_z#)

EndFunction hit_object_id

+ Code Snippet

#Constant KEY_A GetRawKeyState(65)
#Constant KEY_D GetRawKeyState(68)
#Constant KEY_S GetRawKeyState(83)
#Constant KEY_W  GetRawKeyState(87)
#Constant KEY_R  GetRawKeyPressed(82)
#Constant KEY_SHIFT GetRawKeyState(16)

// create some spheres and position them randomly
for i = 1 to 100
	CreateObjectSphere(i,20,16,16)
	SetObjectPosition(i, random(0,500), random(0,500), random(0,500))
	SetObjectColor(i,0,255,0,255)
next i

// position the camera and have it look at the centre of the "map"
SetCameraPosition(1,0,500,0)
SetCameraLookAt(1,0,0,0,0)

do
	
	// toggle freeflight
	if KEY_R 
		if g_View.free_flight
			g_View.free_flight=0
			// reset camera position
			SetCameraPosition(1,100,200,-100)
			SetCameraLookAt(1,100,0,100,0)
		else
			g_View.free_flight=1
		endif
	endif
	
	// handle view movement
	if g_View.free_flight
		View_HandleFreeFlightMovement()
	else	
		View_HandleFixedMovement()
	endif
	
	// get the position of the pointer (mouse)
	pointer_x = GetPointerX()
	pointer_y = GetPointerY()

	// determine which object has been hit
	object_hit = Object_RayCast(0, pointer_x, pointer_y)

	// if an object has been hit then turn it red
	if object_hit <> 0
		
		// select object
		if GetRawMouseLeftPressed()
			// turn all the objects green
			for i = 1 to 100
				if GetObjectExists(i)
					SetObjectColor(i,0,255,0,255)
				endif
			next i
			// turn selected object red
			SetObjectColor(object_hit,255,0,0,255)
		endif
		
		// delete object
		if GetRawMouseRightPressed()
			DeleteObject(object_hit)
		endif
	endif

	Print( "Click & Drag to rotate camera" )
	Print( "WSAD: Move Camera XZ" )
	Print( "Mouse Wheel: Move Camera Y" )
    Print( "LMB: Select object" )
    Print( "RMB: Delete object" )
	Print( "R: Free Flight ("+Str(g_View.free_flight)+")" )

	
    Sync()
loop

// View helper functions
Type t_View
	drag_start_x as float
	drag_start_y as float
	drag_ang_x as float
	drag_ang_y as float
	free_flight
EndType
Global g_View as t_View
Function View_HandleFreeFlightMovement()
	
	if KEY_A then MoveCameraLocalX(1, -10)
	if KEY_D then MoveCameraLocalX(1, 10)
	if KEY_S then MoveCameraLocalZ(1, -10)
	if KEY_W then MoveCameraLocalZ(1, 10)

    if GetRawMouseWheelDelta()>0 then MoveCameraLocalY(1, 10)
	if GetRawMouseWheelDelta()<0 then MoveCameraLocalY(1, -10)
	
	if ( GetPointerPressed())
		g_View.drag_start_x = GetPointerX()
		g_View.drag_start_y = GetPointerY()
		g_View.drag_ang_x = GetCameraAngleX(1)
		g_View.drag_ang_y = GetCameraAngleY(1)	
	endif
	
	diff_x as float
	diff_y as float
	new_x as float 
	
	if ( GetPointerState() = 1 )
		diff_x = (GetPointerX() - g_View.drag_start_x)/12.0
		diff_y = (GetPointerY() - g_View.drag_start_y)/12.0
		new_x = g_View.drag_ang_x + diff_y
		if ( new_x > 89 ) then new_x = 89
		if ( new_x < -89 ) then new_x = -89
		SetCameraRotation( 1, new_x, g_View.drag_ang_y + diff_x, 0 )
	endif

EndFunction
Function View_HandleFixedMovement()
	
	if KEY_A then MoveCameraLocalX(1, -10)
	if KEY_D then MoveCameraLocalX(1, 10)
	if KEY_S then MoveCameraLocalY(1, -10)
	if KEY_W then MoveCameraLocalY(1, 10)
	
	mouse_speed=100
	if KEY_SHIFT
		mouse_speed=60
	endif
    if GetRawMouseWheelDelta()>0 then MoveCameraLocalZ(1, mouse_speed )
	if GetRawMouseWheelDelta()<0 then MoveCameraLocalZ(1, -mouse_speed )
	
EndFunction


Function Distance3D(x1, y1, z1, x2, y2, z2)
	result as integer
	part1 = Pow((x2 - x1), 2)
	part2 = Pow((y2 - y1), 2)
	part3 = Pow((z2 - z1), 2)
	underRadical = part1 + part2 + part3
	result = Sqrt(underRadical)
EndFunction result
Function Object_RayCast(object_id, mouse_x, mouse_y)
	
	unit_x# = Get3DVectorXFromScreen(mouse_x, mouse_y)
	unit_y# = Get3DVectorYFromScreen(mouse_x, mouse_y)
	unit_z# = Get3DVectorZFromScreen(mouse_x, mouse_y)
	
	cam_x# = GetCameraX(1)
	cam_y# = GetCameraY(1)
	cam_z# = GetCameraZ(1)  
	
	dist=Distance3D(cam_x#, cam_y#, cam_z#, 0, 0, 0)*2
	
	start_x# = unit_x# + cam_x#
	start_y# = unit_y# + cam_y#
	start_z# = unit_z# + cam_z#
	
	end_x# = dist*unit_x# + cam_x#
	end_y# = dist*unit_y# + cam_y#
	end_z# = dist*unit_z# + cam_z#

	hit_object_id = ObjectRayCast(object_id, start_x#, start_y#, start_z#, end_x#, end_y#, end_z#)

EndFunction hit_object_id

Quote: "I know that 'GetSpriteHit(x,y) that works with sprites, ....... but is there a 'GetObjectHit(x,y) ' equivalent that works with objects?"

A little reshuffle of the first 2 functions I posted here gives exactly that

+ Code Snippet

Function GetObjectHit(mouse_x, mouse_y)
	
	unit_x# = Get3DVectorXFromScreen(mouse_x, mouse_y)
	unit_y# = Get3DVectorYFromScreen(mouse_x, mouse_y)
	unit_z# = Get3DVectorZFromScreen(mouse_x, mouse_y)
	
	cam_x# = GetCameraX(1)
	cam_y# = GetCameraY(1)
	cam_z# = GetCameraZ(1)  
	
	part1 = Pow((0 - cam_x#), 2)
	part2 = Pow((0 - cam_y#), 2)
	part3 = Pow((0 - cam_z#), 2)
	underRadical = part1 + part2 + part3
	dist=Sqrt(underRadical)*2
	
	start_x# = unit_x# + cam_x#
	start_y# = unit_y# + cam_y#
	start_z# = unit_z# + cam_z#
	
	end_x# = dist*unit_x# + cam_x#
	end_y# = dist*unit_y# + cam_y#
	end_z# = dist*unit_z# + cam_z#

	hit_object_id = ObjectRayCast(0, start_x#, start_y#, start_z#, end_x#, end_y#, end_z#)

EndFunction hit_object_id

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Blendman

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Location: Arkeos

Posted: 2nd Mar 2018 09:30 Edited at: 2nd Mar 2018 09:37

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Hi thank you for your help, but that doesn't work ^^

@Partimecoder : you're example doesn't work because the camera isn't in ortho mode (need : SetCameraFov(1,0))

Here is a test code adapted from your example (ortho mode), but it doesn't work :

#Constant KEY_A GetRawKeyState(65)
#Constant KEY_D GetRawKeyState(68)
#Constant KEY_S GetRawKeyState(83)
#Constant KEY_W  GetRawKeyState(87)

#Constant KEY_R  GetRawKeyPressed(82)
#Constant KEY_SHIFT GetRawKeyState(16)
    
#CONSTANT KEY_LEFT  GetRawKeyState(37)    
#CONSTANT KEY_UP  GetRawKeyState(38)
#CONSTANT KEY_RIGHT  GetRawKeyState(39)
#CONSTANT KEY_DOWN  GetRawKeyState(40)

// create some spheres and position them randomly
for i = 1 to 100
    CreateObjectBox(i,10,10,10)
    SetObjectPosition(i, random(0,500)-random(0,500), random(0,500)-random(0,500), random(0,500)-random(0,500))
    SetObjectColor(i,0,255,0,255)
next i
 
// position the camera and have it look at the centre of the "map"
SetCameraFOV(1,0)
SetCamerarange(1,1,10000)
SetCameraRotation(1,90,180,0)
SetCAmeraPosition(1,0,200,0)
SetCameraOrthoWidth(1,500)
 
 Global ortho = 500
 
do
     
    // toggle freeflight
    if KEY_R 
        if g_View.free_flight
            g_View.free_flight=0
            // reset camera position
            
            SetCameraRotation(1,90,180,0)
			SetCAmeraPosition(1,0,200,0)
			SetCameraOrthoWidth(1,500)

else
            g_View.free_flight=1
        endif
    endif
     
    // handle view movement
    if g_View.free_flight
        View_HandleFreeFlightMovement()
    else    
        View_HandleFixedMovement()
    endif
     
    // get the position of the pointer (mouse)
    //pointer_x = GetPointerX()
    //pointer_y = GetPointerY()
	
	
	// it's also important to have the screen position of the pointer actually correctly, so use ScreenToWorldX and Y !
	pointer_x = ScreenToWorldX (GetPointerX ( )) 
	pointer_y = ScreenToWorldY ( GetPointerY ( ))
 
 
    // determine which object has been hit
    object_hit = Object_RayCast(0, pointer_x, pointer_y)
 
    // if an object has been hit then turn it red
    if object_hit <> 0
         
        // select object
        if GetRawMouseLeftPressed()
            // turn all the objects green
            for i = 1 to 100
                if GetObjectExists(i)
                    SetObjectColor(i,0,255,0,255)
                endif
            next i
            // turn selected object red
            SetObjectColor(object_hit,255,0,0,255)
        endif
         
        // delete object
        if GetRawMouseRightPressed()
            DeleteObject(object_hit)
        endif
    endif
 
    Print( "Click & Drag to rotate camera" )
    Print( "arrow: Move Camera XZ" )
    Print( "Mouse Wheel: Move Camera Y" )
    Print( "LMB: Select object" )
    Print( "RMB: Delete object" )
    Print( "R: Free Flight ("+Str(g_View.free_flight)+")" )
 
     
    Sync()
loop
 
// View helper functions
Type t_View
    drag_start_x as float
    drag_start_y as float
    drag_ang_x as float
    drag_ang_y as float
    free_flight
EndType
Global g_View as t_View

Function View_HandleFreeFlightMovement()
     
	View_HandleFixedMovement()

if ( GetPointerPressed())
        g_View.drag_start_x = GetPointerX()
        g_View.drag_start_y = GetPointerY()
        g_View.drag_ang_x = GetCameraAngleX(1)
        g_View.drag_ang_y = GetCameraAngleY(1)  
    endif
     
    diff_x as float
    diff_y as float
    new_x as float 
     
    if ( GetPointerState() = 1 )
        diff_x = (GetPointerX() - g_View.drag_start_x)/1.0
        diff_y = (GetPointerY() - g_View.drag_start_y)/1.0
        new_x = g_View.drag_ang_x + diff_y
        if ( new_x > 89 ) then new_x = 89
        if ( new_x < -89 ) then new_x = -89
        SetCameraRotation( 1, new_x, g_View.drag_ang_y + diff_x, 0 )
    endif
 
EndFunction
Function View_HandleFixedMovement()
     
    if KEY_LEFT then MoveCameraLocalX(1, -10)
    if KEY_RIGHT then MoveCameraLocalX(1, 10)
    if KEY_DOWN then MoveCameraLocalY(1, -10)
    if KEY_UP then MoveCameraLocalY(1, 10)
     
    mouse_speed=10
    if KEY_SHIFT
        mouse_speed=6
    endif
   
    if GetRawMouseWheelDelta()>0 
		 ortho =  ortho  + mouse_speed
		SetCameraOrthoWidth(1, ortho )
	endif
    if GetRawMouseWheelDelta()<0 
		 ortho =  ortho  - mouse_speed
		SetCameraOrthoWidth(1, ortho)
	endif
     
EndFunction
 
 
Function Distance3D(x1, y1, z1, x2, y2, z2)
    result as integer
    part1 = Pow((x2 - x1), 2)
    part2 = Pow((y2 - y1), 2)
    part3 = Pow((z2 - z1), 2)
    underRadical = part1 + part2 + part3
    result = Sqrt(underRadical)
EndFunction result

Function Object_RayCast(object_id, mouse_x, mouse_y)
     
    unit_x# = Get3DVectorXFromScreen(mouse_x, mouse_y)
    unit_y# = Get3DVectorYFromScreen(mouse_x, mouse_y)
    unit_z# = Get3DVectorZFromScreen(mouse_x, mouse_y)
     
    cam_x# = GetCameraX(1)
    cam_y# = GetCameraY(1)
    cam_z# = GetCameraZ(1)  
     
    dist = Distance3D(cam_x#, cam_y#, cam_z#, 0, 0, 0)*2
     
    start_x# = unit_x# + cam_x#
    start_y# = unit_y# + cam_y#
    start_z# = unit_z# + cam_z#
     
    end_x# = dist*unit_x# + cam_x#
    end_y# = dist*unit_y# + cam_y#
    end_z# = dist*unit_z# + cam_z#
 
    hit_object_id = ObjectRayCast(object_id, start_x#, start_y#, start_z#, end_x#, end_y#, end_z#)
 
EndFunction hit_object_id

+ Code Snippet



#Constant KEY_A GetRawKeyState(65)
#Constant KEY_D GetRawKeyState(68)
#Constant KEY_S GetRawKeyState(83)
#Constant KEY_W  GetRawKeyState(87)

#Constant KEY_R  GetRawKeyPressed(82)
#Constant KEY_SHIFT GetRawKeyState(16)
    
#CONSTANT KEY_LEFT  GetRawKeyState(37)    
#CONSTANT KEY_UP  GetRawKeyState(38)
#CONSTANT KEY_RIGHT  GetRawKeyState(39)
#CONSTANT KEY_DOWN  GetRawKeyState(40)

 
 
 
// create some spheres and position them randomly
for i = 1 to 100
    CreateObjectBox(i,10,10,10)
    SetObjectPosition(i, random(0,500)-random(0,500), random(0,500)-random(0,500), random(0,500)-random(0,500))
    SetObjectColor(i,0,255,0,255)
next i
 
// position the camera and have it look at the centre of the "map"
SetCameraFOV(1,0)
SetCamerarange(1,1,10000)
SetCameraRotation(1,90,180,0)
SetCAmeraPosition(1,0,200,0)
SetCameraOrthoWidth(1,500)
 
 Global ortho = 500
 
do
     
    // toggle freeflight
    if KEY_R 
        if g_View.free_flight
            g_View.free_flight=0
            // reset camera position
            
            SetCameraRotation(1,90,180,0)
			SetCAmeraPosition(1,0,200,0)
			SetCameraOrthoWidth(1,500)

        else
            g_View.free_flight=1
        endif
    endif
     
    // handle view movement
    if g_View.free_flight
        View_HandleFreeFlightMovement()
    else    
        View_HandleFixedMovement()
    endif
     
    // get the position of the pointer (mouse)
    //pointer_x = GetPointerX()
    //pointer_y = GetPointerY()
	
	
	// it's also important to have the screen position of the pointer actually correctly, so use ScreenToWorldX and Y !
	pointer_x = ScreenToWorldX (GetPointerX ( )) 
	pointer_y = ScreenToWorldY ( GetPointerY ( ))
 
 
    // determine which object has been hit
    object_hit = Object_RayCast(0, pointer_x, pointer_y)
 
    // if an object has been hit then turn it red
    if object_hit <> 0
         
        // select object
        if GetRawMouseLeftPressed()
            // turn all the objects green
            for i = 1 to 100
                if GetObjectExists(i)
                    SetObjectColor(i,0,255,0,255)
                endif
            next i
            // turn selected object red
            SetObjectColor(object_hit,255,0,0,255)
        endif
         
        // delete object
        if GetRawMouseRightPressed()
            DeleteObject(object_hit)
        endif
    endif
 
    Print( "Click & Drag to rotate camera" )
    Print( "arrow: Move Camera XZ" )
    Print( "Mouse Wheel: Move Camera Y" )
    Print( "LMB: Select object" )
    Print( "RMB: Delete object" )
    Print( "R: Free Flight ("+Str(g_View.free_flight)+")" )
 
     
    Sync()
loop
 
// View helper functions
Type t_View
    drag_start_x as float
    drag_start_y as float
    drag_ang_x as float
    drag_ang_y as float
    free_flight
EndType
Global g_View as t_View


Function View_HandleFreeFlightMovement()
     
	View_HandleFixedMovement()   

  
    if ( GetPointerPressed())
        g_View.drag_start_x = GetPointerX()
        g_View.drag_start_y = GetPointerY()
        g_View.drag_ang_x = GetCameraAngleX(1)
        g_View.drag_ang_y = GetCameraAngleY(1)  
    endif
     
    diff_x as float
    diff_y as float
    new_x as float 
     
    if ( GetPointerState() = 1 )
        diff_x = (GetPointerX() - g_View.drag_start_x)/1.0
        diff_y = (GetPointerY() - g_View.drag_start_y)/1.0
        new_x = g_View.drag_ang_x + diff_y
        if ( new_x > 89 ) then new_x = 89
        if ( new_x < -89 ) then new_x = -89
        SetCameraRotation( 1, new_x, g_View.drag_ang_y + diff_x, 0 )
    endif
 
EndFunction
Function View_HandleFixedMovement()
     
    if KEY_LEFT then MoveCameraLocalX(1, -10)
    if KEY_RIGHT then MoveCameraLocalX(1, 10)
    if KEY_DOWN then MoveCameraLocalY(1, -10)
    if KEY_UP then MoveCameraLocalY(1, 10)
     
    mouse_speed=10
    if KEY_SHIFT
        mouse_speed=6
    endif
   
    if GetRawMouseWheelDelta()>0 
		 ortho =  ortho  + mouse_speed
		SetCameraOrthoWidth(1, ortho )
	endif
    if GetRawMouseWheelDelta()<0 
		 ortho =  ortho  - mouse_speed
		SetCameraOrthoWidth(1, ortho)
	endif
     
EndFunction
 
 
Function Distance3D(x1, y1, z1, x2, y2, z2)
    result as integer
    part1 = Pow((x2 - x1), 2)
    part2 = Pow((y2 - y1), 2)
    part3 = Pow((z2 - z1), 2)
    underRadical = part1 + part2 + part3
    result = Sqrt(underRadical)
EndFunction result

Function Object_RayCast(object_id, mouse_x, mouse_y)
     
    unit_x# = Get3DVectorXFromScreen(mouse_x, mouse_y)
    unit_y# = Get3DVectorYFromScreen(mouse_x, mouse_y)
    unit_z# = Get3DVectorZFromScreen(mouse_x, mouse_y)
     
    cam_x# = GetCameraX(1)
    cam_y# = GetCameraY(1)
    cam_z# = GetCameraZ(1)  
     
    dist = Distance3D(cam_x#, cam_y#, cam_z#, 0, 0, 0)*2
     
    start_x# = unit_x# + cam_x#
    start_y# = unit_y# + cam_y#
    start_z# = unit_z# + cam_z#
     
    end_x# = dist*unit_x# + cam_x#
    end_y# = dist*unit_y# + cam_y#
    end_z# = dist*unit_z# + cam_z#
 
    hit_object_id = ObjectRayCast(object_id, start_x#, start_y#, start_z#, end_x#, end_y#, end_z#)
 
EndFunction hit_object_id

@phemox : even with ScreenToWorldX /y it odesn't work in ortho mode .

AGK2 tier1 - http://www.dracaena-studio.com

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PartTimeCoder

AGK Tool Maker

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Years of Service

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Joined: 9th Mar 2015

Location: London UK

Posted: 2nd Mar 2018 11:42

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@Blendman, I had a play with the camera in ortho mode and can not get any results at all, sorry but its got me beat.

This 3D camera stuff is a real pain and has me beat

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PHeMoX

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Joined: 9th Jan 2018

Location:

Posted: 2nd Mar 2018 22:23

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Quote: "
@phemox : even with ScreenToWorldX /y it odesn't work in ortho mode ."

Yeah, it works till SetCameraFOV(1,1) , but setting it to 0 seems to render the camera calculation for depth completely useless somehow. I wonder how we can calculate the correct depth.

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Bengismo

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Years of Service

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Joined: 20th Nov 2017

Location: Yorkshire, England

Posted: 3rd Mar 2018 16:51

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I fixed the code for orthographic mode

//#Constant KEY_A GetRawKeyState(65)
#Constant KEY_D GetRawKeyState(68)
#Constant KEY_S GetRawKeyState(83)
#Constant KEY_W  GetRawKeyState(87)
 
#Constant KEY_R  GetRawKeyPressed(82)
#Constant KEY_SHIFT GetRawKeyState(16)
     
#CONSTANT KEY_LEFT  GetRawKeyState(37)    
#CONSTANT KEY_UP  GetRawKeyState(38)
#CONSTANT KEY_RIGHT  GetRawKeyState(39)
#CONSTANT KEY_DOWN  GetRawKeyState(40)
 
 
  
// create some spheres and position them randomly
for i = 1 to 100
    CreateObjectBox(i,10,10,10)
    SetObjectPosition(i, -100+random(0,200), -100+random(0,200), -100+ random(0,200))
    SetObjectColor(i,0,255,0,255)
next i
  
// position the camera and have it look at the centre of the "map"
SetCameraFOV(1,0)
SetCamerarange(1,1,1000)
SetCameraPosition(1,0,0,-150)
SetCameraLookAt(1,0,0,0,0)
//SetCameraRotation(1,0,180,0)

SetCameraOrthoWidth(1,100)
  
Global ortho = 500
  
do
      
    // toggle freeflight
    if KEY_R 
        if g_View.free_flight
            g_View.free_flight=0
            // reset camera position 
			SetCameraPosition(1,0,0,-150)
			SetCameraLookAt(1,0,0,0,0)
 
        else
            g_View.free_flight=1
        endif
    endif
      
    // handle view movement
    if g_View.free_flight
        View_HandleFreeFlightMovement()
    else    
        View_HandleFixedMovement()
    endif
         
     
    // it's also important to have the screen position of the pointer actually correctly, so use ScreenToWorldX and Y !
    pointer_x = ScreenToWorldX (GetPointerX ( )) 
    pointer_y = ScreenToWorldY ( GetPointerY ( ))
  
  
    // determine which object has been hit
    object_hit = Object_RayCastOrtho(0, pointer_x, pointer_y)
  
    // if an object has been hit then turn it red
    if object_hit <> 0
          
        // select object
        if GetRawMouseLeftPressed()
            // turn all the objects green
            for i = 1 to 100
                if GetObjectExists(i)
                    SetObjectColor(i,0,255,0,255)
                endif
            next i
            // turn selected object red
            SetObjectColor(object_hit,255,0,0,255)
        endif
          
        // delete object
        if GetRawMouseRightPressed()
            //DeleteObject(object_hit)
            SetObjectColor(object_hit,255,0,0,255)
        endif
    endif
  
    Print( "Click & Drag to rotate camera" )
    Print( "arrow: Move Camera XZ" )
    Print( "Mouse Wheel: Move Camera Y" )
    Print( "LMB: Select object" )
    Print( "RMB: Delete object" )
    Print( "R: Free Flight ("+Str(g_View.free_flight)+")" )
      
    Sync()
loop
  
// View helper functions
Type t_View
    drag_start_x as float
    drag_start_y as float
    drag_ang_x as float
    drag_ang_y as float
    free_flight
EndType
Global g_View as t_View
 
 
Function View_HandleFreeFlightMovement()
      
    View_HandleFixedMovement()   
 
   
    if ( GetPointerPressed())
        g_View.drag_start_x = GetPointerX()
        g_View.drag_start_y = GetPointerY()
        g_View.drag_ang_x = GetCameraAngleX(1)
        g_View.drag_ang_y = GetCameraAngleY(1)  
    endif
      
    diff_x as float
    diff_y as float
    new_x as float 
      
    if ( GetPointerState() = 1 )
        diff_x = (GetPointerX() - g_View.drag_start_x)/1.0
        diff_y = (GetPointerY() - g_View.drag_start_y)/1.0
        new_x = g_View.drag_ang_x + diff_y
        if ( new_x > 89 ) then new_x = 89
        if ( new_x < -89 ) then new_x = -89
        SetCameraRotation( 1, new_x, g_View.drag_ang_y + diff_x, 0 )
    endif
  
EndFunction

Function View_HandleFixedMovement()
      
    if KEY_LEFT then MoveCameraLocalX(1, -10)
    if KEY_RIGHT then MoveCameraLocalX(1, 10)
    if KEY_DOWN then MoveCameraLocalY(1, -10)
    if KEY_UP then MoveCameraLocalY(1, 10)
      
    mouse_speed=10
    if KEY_SHIFT
        mouse_speed=6
    endif
    
    if GetRawMouseWheelDelta()>0 
         ortho =  ortho  + mouse_speed
        SetCameraOrthoWidth(1, ortho )
    endif
    if GetRawMouseWheelDelta()<0 
         ortho =  ortho  - mouse_speed
        SetCameraOrthoWidth(1, ortho)
    endif
      
EndFunction
  
  
Function Distance3D(x1, y1, z1, x2, y2, z2)
    result as integer
    part1 = Pow((x2 - x1), 2)
    part2 = Pow((y2 - y1), 2)
    part3 = Pow((z2 - z1), 2)
    underRadical = part1 + part2 + part3
    result = Sqrt(underRadical)
EndFunction result

Function Object_RayCast(object_id, mouse_x, mouse_y)
    
    dist = 1000
     
    unit_x# = Get3DVectorXFromScreen(mouse_x, mouse_y)
    unit_y# = Get3DVectorYFromScreen(mouse_x, mouse_y)
    unit_z# = Get3DVectorZFromScreen(mouse_x, mouse_y)
	
    cam_x# = GetCameraX(1)
    cam_y# = GetCameraY(1)
    cam_z# = GetCameraZ(1)

start_x# = cam_x#
    start_y# = cam_y#
    start_z# = cam_z#
      
    end_x# = dist*unit_x# + start_x#
    end_y# = dist*unit_y# + start_y#
    end_z# = dist*unit_z# + start_z#
  
    hit_object_id = ObjectRayCast(object_id, start_x#, start_y#, start_z#, end_x#, end_y#, end_z#)

EndFunction hit_object_id

Function Object_RayCastOrtho(object_id, mouse_x, mouse_y)
      
    unit_x# = Get3DVectorXFromScreen(mouse_x, mouse_y)
    unit_y# = Get3DVectorYFromScreen(mouse_x, mouse_y)
    unit_z# = Get3DVectorZFromScreen(mouse_x, mouse_y)
   
	
	// get the cameras position
    cam_x# = GetCameraX(1)
    cam_y# = GetCameraY(1)
    cam_z# = GetCameraZ(1)

// get the camera unit vector (this is 1000 long)
	MoveCameraLocalZ(1,1000.0)
    cam_dx# = GetCameraX(1) - cam_x#
    cam_dy# = GetCameraY(1) - cam_y#
    cam_dz# = GetCameraZ(1) - cam_z#
	MoveCameraLocalZ(1,-1000.0)
     
     // Create the Ray vector start and end positions
    start_x# = cam_x# + unit_x#
    start_y# = cam_y# + unit_y#
    start_z# = cam_z# + unit_z#
      
    end_x# = start_x# + cam_dx#
    end_y# = start_y# + cam_dy#
    end_z# = start_z# + cam_dz#
  
    hit_object_id = ObjectRayCast(object_id, start_x#, start_y#, start_z#, end_x#, end_y#, end_z#)
  
EndFunction hit_object_id

+ Code Snippet

//#Constant KEY_A GetRawKeyState(65)
#Constant KEY_D GetRawKeyState(68)
#Constant KEY_S GetRawKeyState(83)
#Constant KEY_W  GetRawKeyState(87)
 
#Constant KEY_R  GetRawKeyPressed(82)
#Constant KEY_SHIFT GetRawKeyState(16)
     
#CONSTANT KEY_LEFT  GetRawKeyState(37)    
#CONSTANT KEY_UP  GetRawKeyState(38)
#CONSTANT KEY_RIGHT  GetRawKeyState(39)
#CONSTANT KEY_DOWN  GetRawKeyState(40)
 
 
  
// create some spheres and position them randomly
for i = 1 to 100
    CreateObjectBox(i,10,10,10)
    SetObjectPosition(i, -100+random(0,200), -100+random(0,200), -100+ random(0,200))
    SetObjectColor(i,0,255,0,255)
next i
  
// position the camera and have it look at the centre of the "map"
SetCameraFOV(1,0)
SetCamerarange(1,1,1000)
SetCameraPosition(1,0,0,-150)
SetCameraLookAt(1,0,0,0,0)
//SetCameraRotation(1,0,180,0)

SetCameraOrthoWidth(1,100)
  
Global ortho = 500
  
do
      
    // toggle freeflight
    if KEY_R 
        if g_View.free_flight
            g_View.free_flight=0
            // reset camera position 
			SetCameraPosition(1,0,0,-150)
			SetCameraLookAt(1,0,0,0,0)
 
        else
            g_View.free_flight=1
        endif
    endif
      
    // handle view movement
    if g_View.free_flight
        View_HandleFreeFlightMovement()
    else    
        View_HandleFixedMovement()
    endif
         
     
    // it's also important to have the screen position of the pointer actually correctly, so use ScreenToWorldX and Y !
    pointer_x = ScreenToWorldX (GetPointerX ( )) 
    pointer_y = ScreenToWorldY ( GetPointerY ( ))
  
  
    // determine which object has been hit
    object_hit = Object_RayCastOrtho(0, pointer_x, pointer_y)
  
    // if an object has been hit then turn it red
    if object_hit <> 0
          
        // select object
        if GetRawMouseLeftPressed()
            // turn all the objects green
            for i = 1 to 100
                if GetObjectExists(i)
                    SetObjectColor(i,0,255,0,255)
                endif
            next i
            // turn selected object red
            SetObjectColor(object_hit,255,0,0,255)
        endif
          
        // delete object
        if GetRawMouseRightPressed()
            //DeleteObject(object_hit)
            SetObjectColor(object_hit,255,0,0,255)
        endif
    endif
  
    Print( "Click & Drag to rotate camera" )
    Print( "arrow: Move Camera XZ" )
    Print( "Mouse Wheel: Move Camera Y" )
    Print( "LMB: Select object" )
    Print( "RMB: Delete object" )
    Print( "R: Free Flight ("+Str(g_View.free_flight)+")" )
      
    Sync()
loop
  
// View helper functions
Type t_View
    drag_start_x as float
    drag_start_y as float
    drag_ang_x as float
    drag_ang_y as float
    free_flight
EndType
Global g_View as t_View
 
 
Function View_HandleFreeFlightMovement()
      
    View_HandleFixedMovement()   
 
   
    if ( GetPointerPressed())
        g_View.drag_start_x = GetPointerX()
        g_View.drag_start_y = GetPointerY()
        g_View.drag_ang_x = GetCameraAngleX(1)
        g_View.drag_ang_y = GetCameraAngleY(1)  
    endif
      
    diff_x as float
    diff_y as float
    new_x as float 
      
    if ( GetPointerState() = 1 )
        diff_x = (GetPointerX() - g_View.drag_start_x)/1.0
        diff_y = (GetPointerY() - g_View.drag_start_y)/1.0
        new_x = g_View.drag_ang_x + diff_y
        if ( new_x > 89 ) then new_x = 89
        if ( new_x < -89 ) then new_x = -89
        SetCameraRotation( 1, new_x, g_View.drag_ang_y + diff_x, 0 )
    endif
  
EndFunction


Function View_HandleFixedMovement()
      
    if KEY_LEFT then MoveCameraLocalX(1, -10)
    if KEY_RIGHT then MoveCameraLocalX(1, 10)
    if KEY_DOWN then MoveCameraLocalY(1, -10)
    if KEY_UP then MoveCameraLocalY(1, 10)
      
    mouse_speed=10
    if KEY_SHIFT
        mouse_speed=6
    endif
    
    if GetRawMouseWheelDelta()>0 
         ortho =  ortho  + mouse_speed
        SetCameraOrthoWidth(1, ortho )
    endif
    if GetRawMouseWheelDelta()<0 
         ortho =  ortho  - mouse_speed
        SetCameraOrthoWidth(1, ortho)
    endif
      
EndFunction
  
  
Function Distance3D(x1, y1, z1, x2, y2, z2)
    result as integer
    part1 = Pow((x2 - x1), 2)
    part2 = Pow((y2 - y1), 2)
    part3 = Pow((z2 - z1), 2)
    underRadical = part1 + part2 + part3
    result = Sqrt(underRadical)
EndFunction result



Function Object_RayCast(object_id, mouse_x, mouse_y)
    
    dist = 1000
     
    unit_x# = Get3DVectorXFromScreen(mouse_x, mouse_y)
    unit_y# = Get3DVectorYFromScreen(mouse_x, mouse_y)
    unit_z# = Get3DVectorZFromScreen(mouse_x, mouse_y)
	
    cam_x# = GetCameraX(1)
    cam_y# = GetCameraY(1)
    cam_z# = GetCameraZ(1)  

    start_x# = cam_x#
    start_y# = cam_y#
    start_z# = cam_z#
      
    end_x# = dist*unit_x# + start_x#
    end_y# = dist*unit_y# + start_y#
    end_z# = dist*unit_z# + start_z#
  
    hit_object_id = ObjectRayCast(object_id, start_x#, start_y#, start_z#, end_x#, end_y#, end_z#)

EndFunction hit_object_id


Function Object_RayCastOrtho(object_id, mouse_x, mouse_y)
      
    unit_x# = Get3DVectorXFromScreen(mouse_x, mouse_y)
    unit_y# = Get3DVectorYFromScreen(mouse_x, mouse_y)
    unit_z# = Get3DVectorZFromScreen(mouse_x, mouse_y)
   
	
	// get the cameras position
    cam_x# = GetCameraX(1)
    cam_y# = GetCameraY(1)
    cam_z# = GetCameraZ(1)  
    

	// get the camera unit vector (this is 1000 long)
	MoveCameraLocalZ(1,1000.0)
    cam_dx# = GetCameraX(1) - cam_x#
    cam_dy# = GetCameraY(1) - cam_y#
    cam_dz# = GetCameraZ(1) - cam_z#
	MoveCameraLocalZ(1,-1000.0)
     
     // Create the Ray vector start and end positions
    start_x# = cam_x# + unit_x#
    start_y# = cam_y# + unit_y#
    start_z# = cam_z# + unit_z#
      
    end_x# = start_x# + cam_dx#
    end_y# = start_y# + cam_dy#
    end_z# = start_z# + cam_dz#
  
    hit_object_id = ObjectRayCast(object_id, start_x#, start_y#, start_z#, end_x#, end_y#, end_z#)
  
EndFunction hit_object_id

Also the original code wasnt right either even in projection mode so needed fixing.

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Blendman

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Joined: 17th Feb 2014

Location: Arkeos

Posted: 5th Mar 2018 12:03

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@Bengismo : Thanks a lot, it works fine !

AGK2 tier1 - http://www.dracaena-studio.com

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PHeMoX

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Joined: 9th Jan 2018

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Posted: 7th Mar 2018 21:15

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Neat trick setting the CameraZ like that for the vector Bengismo. Now it does give the correct depth.

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