for plat in platforms: plat is a local variable inside loop. try to use somethink as: for idx, plat in enumerate(platforms): platforms[idx]... ...
2015-04-28 22:52 GMT+02:00 Charles Cossé <cco...@gmail.com>: > he has r=200 so nothing to do with rounding errors > > On Tue, Apr 28, 2015 at 2:46 PM, Jeffrey Kleykamp < > jeffrey.kleyk...@gmail.com> wrote: > >> It might be a rounding issue. rect.x is always the nearest integer I >> think. It's better to store position as a float and then only round when >> drawing. >> >> On Tue, Apr 28, 2015 at 4:28 PM, Charles Cossé <cco...@gmail.com> wrote: >> >>> Well I just spent 15 minutes looking at your code ... nothing obvious >>> jumps out, except inconsistent use of variables and representations. Let >>> me ask: Can you write a simple pygame program that makes a sprite move in a >>> circle, yourself, right now? >>> >>> On Tue, Apr 28, 2015 at 11:10 AM, Charles Cossé <cco...@gmail.com> >>> wrote: >>> >>>> Hi, >>>> >>>> Typically x=r*cos(angle) and y=r*sin(angle) ... you've got the opposite. >>>> >>>> You'd have to post more code for anyone to help with you in/out of >>>> class problem ... >>>> >>>> Charles >>>> >>>> On Tue, Apr 28, 2015 at 6:52 AM, diliup gabadamudalige < >>>> dili...@gmail.com> wrote: >>>> >>>>> Looking at the code on this page lines 47 & 48 >>>>> >>>>> >>>>> http://programarcadegames.com/python_examples/show_file.php?file=sprite_circle_movement.py >>>>> >>>>> is there a way to do >>>>> self.rect.x +*= some value* >>>>> self.rect.y += some value >>>>> >>>>> rather than >>>>> >>>>> self.rect.x = self.radius * math.sin(self.angle) + self.center_x >>>>> self.rect.y = self.radius * math.cos(self.angle) + self.center_y >>>>> >>>>> ? >>>>> >>>>> I tired it in the code attached and strangely it works ok but only >>>>> OUTSIDE THE class. When I implement the exact code in a class it does >>>>> something weird. I can't find where I have gone wrong. >>>>> >>>>> Please help. >>>>> >>>>> Many thanks in advance. >>>>> >>>>> Diliup Gabadamudalige >>>>> >>>>> >>>>> >>>>> ********************************************************************************************** >>>>> This e-mail is confidential. It may also be legally privileged. If you >>>>> are not the intended recipient or have received it in error, please delete >>>>> it and all copies from your system and notify the sender immediately by >>>>> return e-mail. Any unauthorized reading, reproducing, printing or further >>>>> dissemination of this e-mail or its contents is strictly prohibited and >>>>> may >>>>> be unlawful. Internet communications cannot be guaranteed to be timely, >>>>> secure, error or virus-free. The sender does not accept liability for any >>>>> errors or omissions. >>>>> >>>>> ********************************************************************************************** >>>>> >>>>> >>>> >>> >> >> >> -- >> >> Jeffrey Kleykamp >> > >
