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Post by Slenkar on May 18, 2004 1:05:30 GMT
Please can you give me some hints on how to create a function that places a 3D object at certain 2D screen co-ords instead of a sprite?
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Post by syntaxerror on May 21, 2004 17:37:10 GMT
EDIT
See new example below
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Post by Slenkar on May 22, 2004 20:16:31 GMT
thee xample works great, but in the game the sphere isnt orientated to the sprite camera.
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Post by syntaxerror on May 23, 2004 9:31:35 GMT
Does PointEntity myentity,spritecamera help?
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Post by Slenkar on May 23, 2004 21:34:28 GMT
I placed the sphere at 0,-1000,0
where the spritecamera is, before the program ran
but it appears at -150,112,150 after the smpositionentity command is applied,
I changed the code to :
smPositionEntity sphere,mouse_x,mouse_y-1000,150
but it still didnt appear in fron of the spritecamera
it appeared at
325,15,150
In the SMPRO.BB file there is some function or command that makes the sprites appear in front of the spritecamera whereever it may be but I dont how to apply that command to an object instead.
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Post by syntaxerror on May 29, 2004 6:53:07 GMT
This should do the trick ...
AppTitle"SpriteMasterPro - Positioning an entity"
Include "smPro.bb"
; set up sprite display
SpriteGraphics 640,480,0,2
; reference sprite
sprite.smSprite=CreateSprite(100,18)
HandleSprite sprite
tex=CreateTexture(100,18)
SetBuffer TextureBuffer(tex)
Color 210,210,210
Rect 0,0,100,18,True
Color 10,10,10
Text 2,2,"SpriteMaster"
SpriteTexture sprite,tex
FreeTexture tex
SetBuffer BackBuffer()
; entity for positioning at 2D coords
sphere=CreateSphere()
EntityColor sphere,0,255,0
; some random cubes
For c=1 To 500
cube=CreateCube()
PositionEntity cube,Rnd(-150,150),Rnd(-150,150),Rnd(-150,150)
EntityColor cube,Rand(255),Rand(255),Rand(255)
Next
; light
l=CreateLight()
MoveMouse 170,100
; LOOP START *********************************
Repeat
mx=MouseX() : my=MouseY()
PositionSprite sprite,mx,my
smPositionEntity sphere,mx,my,15
TurnEntity spritecamera,-0.06,0.3,0.07
MoveEntity spritecamera,0,0,0.1
RenderWorld : Flip
Until KeyHit(1)
; LOOP END ***********************************
; cleanup
FreeSprite sprite
EndSpriteGraphics
End
; position entity at 2D coords (with optional z distance)
; (thanks to James Boyd - BlitzSupport)
Function smPositionEntity(ent,x#,y#,z#=10.0 , cam=-1 , camzoom#=1.0)
If cam<0 cam=spritecamera
Local gw=GraphicsWidth()
Local gh=GraphicsHeight()
Local xp#=-((gw Shr 1)-x)
Local yp#= (gh Shr 1)-y
EntityParent ent,cam
Local div#=(gw/(2/camzoom))/z
PositionEntity ent,xp/div,yp/div,z
End Function
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Post by syntaxerror on May 29, 2004 6:57:01 GMT
NOTE:
I was getting flickering of the sprite to start with.
You may need to do what I did and modify the smPro.bb lib. Specifically the SpriteGraphics command.
Change the default pivotdist# to 1.0001
EG:
Function SpriteGraphics(gw%,gh%,d%=0,m%=0,pivotdist#=1.0001)
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Post by Slenkar on Jun 28, 2004 21:58:42 GMT
Thanks JimB very useful for my game!
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Post by Slenkar on Oct 8, 2004 22:32:45 GMT
I found out that the rotation AND movement of the spritecamera is the reason the sprite was flickering.
If a seperate spritecamera is used for sprites then this wont be a problem.
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Post by Slenkar on Oct 19, 2004 17:26:59 GMT
Is there any way to get the 3d object flat?
so that it doesnt look different when you move it around the screen?
I changed the camera mode to orthographic but it didnt make much difference.
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