Trouble positioning bullets.. - GameCreators Forum

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JJJ0han

17

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Joined: 4th Oct 2007

Location: Brisbane, Australia

Posted: 3rd Nov 2007 00:42

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I've got visible bullets, they work very well, but the only problem is the placement. I want them to be positioned slightly to the right of the player each time.

This works, but goes horribly wrong when the player is facing the opposite direction which causes the bullets to actually get fired from the left side of the screen instead of the right.

Here's the cut-down firing code with just the bullet's role:
object 4 is the bullet
object 2 is the player

+ Code Snippet

if Mouseclick()=1 and Ammo >0 and delay_fire>=delay_fire_max
Set object to object orientation 4,2
if keystate(29)=0
Position object 4,X#+2,Y#+5,Z#
else
Position object 4,X#+2,Y#,Z#
endif
show object 4
Endif

Here's the player's rotation:

+ Code Snippet

   yAng = WRAPVALUE(yAng + mouseMovementX*lookSpeed)
   xLook = WRAPVALUE(xLook + mouseMovementY*lookSpeed)

   ROTATE OBJECT 2,0,yAng,0
   PITCH OBJECT DOWN 2,xLook
   ROTATE CAMERA xLook,yAng,0

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Guyra

19

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Joined: 10th Nov 2005

Location: Norway

Posted: 3rd Nov 2007 00:46

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You could fix this by using the commands:
NEWXVALUE(Current X Value, Angle Value, Step Value)
NEWZVALUE(Current Z Value, Angle Value, Step Value)

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JJJ0han

17

Years of Service

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Joined: 4th Oct 2007

Location: Brisbane, Australia

Posted: 3rd Nov 2007 01:04 Edited at: 3rd Nov 2007 01:05

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Hmm, could you give me some help with that? I haven't used the command before and I'm not exactly sure what to use for the values.

NEWXVALUE(X#, 0, Step 5)
NEWZVALUE(x#, 0, Step 5)

Would that be right?

Also when I try to run it, it says "Could not understand command"

I've got the latest version of DarkBASIC not sure why it says that.

I've found an alternative, but now its stuffing up with the Y positioning when I look up or down

.

+ Code Snippet

 Position object 4,X#,Y#,Z#

      move object right 4,2.5
      move object up 4,6
      move object 4,0
      move object 4,0.25
else
rem Position object 4,X#+3,Y#-1,Z#
rem Position object 4,X#+2,Y#-1,Z#
 Position object 4,X#,Y#,Z#
      move object right 4,2.5
      move object up 4,1
      move object 4,0
      move object 4,0.25
endif

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Guyra

19

Years of Service

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Joined: 10th Nov 2005

Location: Norway

Posted: 3rd Nov 2007 01:33 Edited at: 3rd Nov 2007 01:35

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Something like this should do it:

+ Code Snippet

position object Bullet,NEWXVALUE(X#, CameraAngleY#, 5),Y#,NEWZVALUE(Z#, CameraAngleY#, 5)

..and you're using DBPro and not DBClassic, right?

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