Sprite linked,group, joint - GameCreators Forum

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Blendman

10

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Joined: 17th Feb 2014

Location: Arkeos

Posted: 6th Jul 2014 11:35

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Hi

I'm looking for a method to "group" or attach 2 sprites (or more), so if I move the sprite1, the sprite2 move too. If I rotate the sprite1 (aroundhis offset), the sprite2 is rotated around the offset of the sprite1.

It's to create a sort of spine/bones system for 2D.

Thank you for your answer.

http://www.dracaena-studio.com

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chafari

Valued Member

18

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Joined: 2nd May 2006

Location: Canary Islands

Posted: 5th Sep 2014 02:28

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This example is for Dbpro, but I suppose that you can do the same in AppGameKit .

+ Code Snippet

ink rgb(60,10,0),0
box 0,0,10,40
ink rgb(255,255,0),0
box 4,4,6,6
get image 1,0,0,10,40
autocam off
sync on
sprite 1,50,50,1
offset sprite 1,4,4    `offseting sprite to hinge

do
rotate sprite 1,rt#                       `main body
sprite 2,sprite x(1),sprite y(1),1        `creating sprite 2 and positioning in sprite 1 coords
rotate sprite 2,sprite angle(1)           `rotating sprite 2 same angle of sprite 1
move sprite 2,-35                         `moving sprite 2 to knee position
rotate sprite 2,0                         `reseting sprite 2 angle
offset sprite 2,4,4                       `offseting sprite 2 to hinge
   sprite 3,sprite x(2),sprite y(2),1
   rotate sprite 3,sprite angle(2)
   move sprite 3,-30
   rotate sprite 3,-90
   offset sprite 3,4,4
   size sprite 3,12,20

if upkey() then rt#=rt#-0.3
if downkey() then rt#=rt#+0.3

set cursor 0,0
print "Press upkey/downkey"

sync
loop

Cheers.

I'm not a grumpy grandpa

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baxslash

Valued Member

Bronze Codemaster

17

Years of Service

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Joined: 26th Dec 2006

Location: Duffield

Posted: 5th Sep 2014 14:33

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I have some code for this buried in the free library that comes with my own system called SpriteFX.

It's not terribly complicated but it does get a little more complicated if you start thinking about flipping a character in the X direction (for example).

You're welcome to use my system for reference and any of the code in the include file for your own purposes. I found I can run up to about 8 characters of medium complexity at any one time compared to about 30 characters using Spine in V2. As for explaining the code I'm happy to help although it's been quite a while since I made any changes to SpriteFX.

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chafari

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18

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Joined: 2nd May 2006

Location: Canary Islands

Posted: 5th Sep 2014 14:48

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@baxslash
I hadn't seen this before ! Great tool ...Thanks for the link

I'm not a grumpy grandpa

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baxslash

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Bronze Codemaster

17

Years of Service

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Joined: 26th Dec 2006

Location: Duffield

Posted: 5th Sep 2014 19:54

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It's a little clunky and not easy to use but I have been able to successfully add fully animatable characters that new animations can be easily added to. Hope you find it useful!

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