Hi Ivo, I think what happened was I used a batchNode, added that to the layer, then added the missle to the batchNode, resulting in wonkiness. The 'parentLayer' in above code is the batchhNode, not the layer itself. D'oh!
Thanks for all your help! J On May 12, 11:36 am, "Ivo F.A.C. Fokkema" <[email protected]> wrote: > Hi Jason, > > Looking at this piece of code, I would indeed say you shouldn't need to > correct, assuming there are no problems on the side of the Missle class > (there seems to be a typo in the name?) when setting the self.position. > > Regards, > > Ivo > > > > > > > > On Tue, 2012-05-08 at 14:29 -0700, Jason wrote: > > I think this nailed it on the head. I did some relative coordinate > > correction and it seems to be working correctly. HOWEVER. the Missile > > is NOT a child of the Capitol Ship (CS) , it's a child of the same > > layer that the Capitol Ship belongs to. > > > I passed in the parent layer to the CS, (thinking I could only add to > > the layers, not to other Sprites), then used that layer to add the > > missile to it. So I SHOULDN'T have to correct for relative > > positioning, correct? > > > class CapitolShip(Sprite, Seeking): > > def __init__(self, center_x, center_y, radius, target, > > parentLayer): > > super( CapitolShip, self ).__init__('capitolShip.png') > > self.position = (center_x, center_y) > > self.cshape = cm.CircleShape(eu.Vector2(center_x, center_y), > > radius) > > > self.target = target > > > self.randomXRangeFromMS = random.randrange(-100, 100) > > self.randomYRangeFromMS = random.randrange(100, 200) > > self.schedule(self.seekAndDestroy) > > > self.angle = 0 > > self.schedule_interval(self.turnTowardsTarget,.3) > > > self.schedule_interval(self.fire,2) > > self.parentLayer = parentLayer > > self.hasFired = False > > > def fire(self, dt): > > if(not self.hasFired): > > self.parentLayer.add(Missle(self.position, 10, > > self.target),9) > > self.hasFired=True > > > On May 6, 11:49 am, claudio canepa <[email protected]> wrote: > > > On Sun, May 6, 2012 at 2:50 PM, Jason <[email protected]> wrote: > > > > I'm writing a little game in cocos2d, trying to use the Bezier Action > > > > and Bezier path to make a Missile fired from a Capitol Ship the > > > > missile fly at the Mother Ship in a cool, loopy kinda way. > > > > > My problem seems to be what I think is a position isn't what Bezier > > > > thinks is a position. I give it the Mothership position, and the > > > > Missile starting position (wherever its Capitol Ship is at the time) , > > > > and tell the Missile to make it's way to the Mothership. > > > > If all the entities are direct childs of a Gamelayer or some other node, > > > then a Bezier from missile.position (at spawn time) to mothership.position > > > (at spawn time) should provide a travel path from missile.position to > > > mothership.position. > > > > If thats not true (by example, if missile is child to capitol_ship) then > > > you have to do some coordinate changes: all the points in the bezier must > > > be in the same coordinate space. > > > There it can be handy the CocosNodes methods point_to_world, > > > point_to_local > > > > > However, the Bezier Path seems to think 0, 0 is where ever the Missile > > > > has spawned, not absolute position on the screen. > > > > How can I get the Bezier Path to take absolute position? Here's the > > > > bit of code from the Missile class > > > > > def hitTarget(self): > > > > tx, ty = self.target.position > > > > mx, my = self.position > > > > # this bit of code makes the missile do weird things > > > > # path = BezPath( (mx, my), #first point > > > > # (tx, ty), #end point > > > > # (mx-10, my-20), #second point > > > > # (mx-20, my-30)) #third > > > > > #this bit of code makes the Missile spawn correctly, but will I have > > > > to calculate the relative position > > > > #of the mother ship to make it hit? > > > > path = BezPath( (0, 0), #first point > > > > (0, 0), #end point > > > > (-10, -20), #second point > > > > (-20, -30)) #third > > > > > self.do(BezAction(path, 2 )) > > > > > -- > > > > You need to clarify the parent - child relationship to asses the > > > correctnes > > > of your code > > > > claudio > > > > -- -- You received this message because you are subscribed to the Google Groups "cocos2d discuss" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/cocos-discuss?hl=en.
