move a 3d object - GameCreators Forum

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pamercomov

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Posted: 9th Jun 2020 09:19

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good morning .... please, could someone give me some guidance on how to move a 3d object at a certain angle?
for example a shot, a missile etc ...

I already have a character that I move, as I want in the 3d world, but when I spawn a shoot, I can't get it to move as it should

I have not found how to make an advance function and my knowledge in mathematics is not helping

or indicate any code that has been published in this regard .... the searches that I have made lead me only to the darkbasic forum

thx!!!!

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Scraggle

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Posted: 9th Jun 2020 10:23

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Perhaps you could post the code you have tried and we can point out what you could do to improve it?
Also, you say you have working 3D movement for your character, so if you post this then we can demonstrate how to adapt that code for your missiles.

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pamercomov

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Posted: 9th Jun 2020 11:27

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okay. I am going to rewrite the function that moves the shots since since it did not work I have deleted it. the movement of the character that I do is very simple
this code to move

function controla_prota()

startx# = Getobjectx(objID)
	starty# = Getobjectz(objID)
	mueve = 0
 rem Move camera		
	if ( GetRawKeyState( 87 ) or GetJoysticky()<0 ) 
		a=abs(startx#/64)
		b=abs(starty#/64)+GetFrameTime()*40
		if mapa[a,b] =1 then starty#=	starty#+GetFrameTime()*100
		mueve = 1
	endif 	 
	 
	 
 if ( GetRawKeyState( 83 ) or GetJoysticky()>0 )
	 	a=abs(startx#/64)
		b=abs(starty#/64)-GetFrameTime()*40
	 
		if mapa[a,b] = 1 then starty#= 	starty#-GetFrameTime()*100//MoveCameraLocalz( 1, -0.05 )
		mueve = 1
 endif
 
 
 
 if ( GetRawKeyState( 65 ) or GetJoystickx()<0 )
	 	a=abs(startx#/64)-GetFrameTime()*40
		b=abs(starty#/64)
	 
	  if mapa[a,b] = 1 then startx#=	startx#-GetFrameTime()*100 //
	  mueve = 1
	  
 endif

if ( GetRawKeyState( 68 ) or GetJoystickx()>0 ) 
	 	a=abs(startx#/64)+GetFrameTime()*40
		b=abs(starty#/64)
	if  mapa[a,b] = 1 then startx# = startx#+GetFrameTime()*100//MoveCameraLocalX( 1, 0.05 )
	mueve = 1
 endif
	if ( GetRawKeyPressed(32) ) 
	 reinicio()

endif

endfunction

+ Code Snippet

function controla_prota()

	startx# = Getobjectx(objID)
	starty# = Getobjectz(objID)
	mueve = 0
 rem Move camera		
	if ( GetRawKeyState( 87 ) or GetJoysticky()<0 ) 
		a=abs(startx#/64)
		b=abs(starty#/64)+GetFrameTime()*40
		if mapa[a,b] =1 then starty#=	starty#+GetFrameTime()*100
		mueve = 1
	endif 	 
	 
	 
 if ( GetRawKeyState( 83 ) or GetJoysticky()>0 )
	 	a=abs(startx#/64)
		b=abs(starty#/64)-GetFrameTime()*40
	 
		if mapa[a,b] = 1 then starty#= 	starty#-GetFrameTime()*100//MoveCameraLocalz( 1, -0.05 )
		mueve = 1
 endif
 
 
 
 if ( GetRawKeyState( 65 ) or GetJoystickx()<0 )
	 	a=abs(startx#/64)-GetFrameTime()*40
		b=abs(starty#/64)
	 
	  if mapa[a,b] = 1 then startx#=	startx#-GetFrameTime()*100 //
	  mueve = 1
	  
 endif

  
 if ( GetRawKeyState( 68 ) or GetJoystickx()>0 ) 
	 	a=abs(startx#/64)+GetFrameTime()*40
		b=abs(starty#/64)
	if  mapa[a,b] = 1 then startx# = startx#+GetFrameTime()*100//MoveCameraLocalX( 1, 0.05 )
	mueve = 1
 endif
	if ( GetRawKeyPressed(32) ) 
	 reinicio()

	endif


endfunction

and this function repositions the camera and rotates the character pointing in the direction of the pointer

+ Code Snippet

function recoloca_caracter_camara(objID)
	//camara = 0
	getx# = getobjectx(objID)
	gety# = getobjecty(objID)
	getz# = getobjectz(objID)
	direcction# = ATanFull(GetScreenXFrom3D(getx#,gety#,getz#)-GetPointerX(),GetScreenyFrom3D(getx#,gety#,getz#)-getpointery())
	SetObjectPosition(objID,startx#,gety#,starty#)
	camara_distancia = (camara_distancia-GetRawMouseWheelDelta())
	if camara_distancia < 100 then camara_distancia = 100
	if camara_distancia > 550 then camara_distancia = 550
	if GetRawMouseMiddlePressed() then camara_distancia = 400
	SetCameraPosition(1,getx#,gety#+camara_distancia,getz#-150)
	SetObjectRotation(objID,0,direcction#,0)
	SetCameraLookAt(1,getx#,gety#+60,getz#,0)
endfunction

i found this https://forum.thegamecreators.com/thread/222027#msg2626744
but this uses fisycs.

As you can see I do not use physics in the game.
I used trigonometry to move the shot but frankly it had nothing to do with what I was trying
a simple orientation that guides me in the right direction I hope is enough, or a code that you have used in a similar situation without physics

very thx

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pamercomov

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Posted: 9th Jun 2020 11:57

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I upload a small demo in case it can be of help to understand what I want to achieve

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pamercomov

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Posted: 9th Jun 2020 11:58 Edited at: 9th Jun 2020 11:59

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ups... i cant upload a zip file?

edit: ok is here

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Mambazo

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Posted: 9th Jun 2020 13:15

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Would these functions be helpful?

MoveObjectLocalX()
MoveObjectLocalY()
MoveObjectLocalZ()

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smallg

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Posted: 9th Jun 2020 13:47

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yes as mambazo says you normally just rotate the object to face the same direction as the camera/gun then move it forwards
i.e.
SetObjectRotation(obj,GetCameraAngleX(1),GetCameraAngleY(1),GetCameraAngleZ(1))
MoveObjectLocalZ(obj,distance)

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pamercomov

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Posted: 9th Jun 2020 16:03

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ooohh...thx,
This is what I was looking for and I had not found and I was going crazy with math and it was done ..... very very thx

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AppGameKit Classic Chat / move a 3d object

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