First of all, thank you for your attention I will try this and see what happens
Im just learning soya, and im amazing with what it can do! thanks all > On 19 d?c. 07, at 10:22, Souvarine wrote: > > > For your task there is an easy way to go : Just create a vector > > oriented > > toward north with your scene (world) as parent. Then create a vector > > with your character as parent and oriented toward the front of your > > character. And that's it, any time you want to check the > > orientation of > > your character from north you use the angle_to method with those two > > vectors. Easy :) > > But take care that this vector may not be in the horizontal plane > (as the north vector is). Therefor, the angle_to methode will not > return the exact angle to north. you have project this vector on the > horizontal plane > > (example where the horizontal plane's equation is "y=0" (or any > constant)) > > # Having > field = World() > north = Vector(field,43,0,53) # the 0 is mandatory. The two other > value (43, and 54) have to be set as wished) > agent= Body(field) > > # You get the angle to north with : > agent_front = Vector(agent,0,0,-1) # you get the agent front > agent_front %= field # convert the agent_front vector in the field > coordonate > agent_front.y # project the vector on the horizontal plane > angle = agent_front.angle_to(north) # calculate the angle to north > (yeah it's the most useful comment > > > ####################################### > ### But beware ! ! ! This is the angle to north, not the orientation, > I mean than east and west will have the same value. You have to > determine this another way. > > > # but when your north vector run along the X ou Z axis you just have > to test the value of the other axis > > # Having > north = Vector(field,0,0,-1) # the north run along the Z axis > > #add this after angle calculation > if agent_front.x < 0: # If the vector is at East. > angle = 360-angle > > > It may be a good idea to make a tutorial of it. :-) > > > Have fun. > > > -- > marmoute > _______________________________________________ Soya-user mailing list Soya-user@gna.org https://mail.gna.org/listinfo/soya-user
