Boingo_Buzzard Wrote: I was wondering who would catch that. The problem I faced is that the turret and tank body are two separate objects. However, they have to rotate at the same angle. The tank body rotates at a different axis than the turret does. In Flash the center of rotation is the center of the image, so the center of the turret and the center of the tank are different. I had to compromise by making the center of the turret and the tank the same, by offsetting the tank body to match the center of the turret (e.g. increasing the image area size). This, unfortunately, makes the tank body rotate off-center. Kudos to Todd for catching this. Do you have a solution by any chance?

This jumped out at me too. Still I find this very cool so don't take that as a negative. I know zero about flash so I don't have a flash solution for you however I know how I'd deal with this in POV-Ray so something similiar might work in flash.

(1) Assume the tank is always pointing in the x-direction and centered on positioned at 0,0.

(2) Assume the turret is also cenetered at 0,0 and pointing forward (also the x-direction). The turret isn't in the correct position relative to the tank but that's ok.

(3) Apply the rotation needed to the turret to get it pointed in the direction relative to the tank that you want.

(4) Translate the turret so it's center will be over the location it should be on the tank. This position is fixed, remember the tank is always at 0,0 facing in the x-direction. The translation will not affect the turrets rotation.

(5) You should now have an image of the tank with the turret properly position and pointing in the right direction. Now apply the rotation you need to get the tank pointing in the direction you want to this image.

(6) Finally apply the translation you need to get the tank where you want it on the grid.

I hope that helps,
Carl

Well, that didn't work at all I still have two seperate x-y coordinates of rotation, so the turret doesn't stay in the same spot in relation to the tank body as they rotate. There may be some mathmatical way to tell the turret where it's supposed to be in relation to the body at all times, but I'll never figure that out.

EDT: Actually sitting here thinking about it, the problem is that I need to different points of rotation for the turret. Center, for when it rotates with the tank, and Off-Center at the dome for when it rotates by itself. Grid_89a, can ActionScript specify the point of rotation for a symbol? I checked out the parameter for the "_rotation" property and didn't see where I could do that.
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Boingo_Buzzard Wrote: I need some math help. Hopefully there are some mathmaticians in our group. I need a math formula. I am trying to "orbit" one object around another in Flash. Given that object 1 will have a x and y value on a grid of a certain number (doesn't matter what), and that the value of rotation will be a constant (1 to 180 moving right and 1 to -180 moving left), I want to offset object 2's x and y value when the rotaional value is 0 at object1's x -15 and y-42 and then have it maintain that orbit (meaning object 2's x and y value offset would be maintained by whatever the rotation value is.) Any help?

Um...



Carl!



Quick - light up the wwwmwww signal...


...and I'm sure he'll come running in with a quick formula for you!

TheReelTodd Wrote: Um... Carl! Quick - light up the wwwmwww signal... ...and I'm sure he'll come running in with a quick formula for you!

I can probably help. I was out of town yesterday as my father was back in the hospital. It's going to take me most of today to get caught up so if this can wait till tomorrow or maybe this weekend I'd be happy to see what I can come up with.

Carl

wwwmwww Wrote: I can probably help. I was out of town yesterday as my father was back in the hospital. It's going to take me most of today to get caught up so if this can wait till tomorrow or maybe this weekend I'd be happy to see what I can come up with.

No rush, any help is appreciated. Hope your Father is doing better.


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Boingo_Buzzard Wrote: Kamui Wrote:Hey... now there's a new quickly Flash project for me. *Runs off and tackles Flash like a football player* Just FYI, I am looking for ActionScript code that will orbit a "child" based on the "parent's" rotation. Not a Flash Movie.

*Rapid pause and skids in to an LC wall* I was referning to a little Flash loop about wwwmwww signal. But I can poke my head around for a code if you'd like. ^^

~Kamui.EXE
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Boingo_Buzzard Wrote: Kamui Wrote:I was referning to a little Flash loop about wwwmwww signal. But I can poke my head around for a code if you'd like. ^^ Ahhhh... gotcha. Yeah I need this solution to be able to impliment tank firing. I found some examples online, so maybe I can work from that. Or Carl or you will come to my resuce

I'll see what I can figure out. If I can't get anything going, I'll at least toss in a "complementary" preloader for you. ^^

~Kamui.EXE

I'll give it a shot. Thanks!

Sure, that would be great. I PM'ed you my e-mail address.

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