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Revision 40 as of 2010-06-07 09:39:01
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Comment: undo spam
Deletions are marked like this. Additions are marked like this.
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# Copyright (c) 2005 Nokia Corporation
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
= Game Programming With Python =
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import appuifw
from graphics import *
import e32
from key_codes import *
You can write whole games in Python using [[http://www.pygame.org/|PyGame]]. See a list of other PythonGameLibraries maintained in this Wiki, or [[http://www.devmaster.net/engines/list.php?fid=6&sid=11|this list maintained on DevMaster.net]].
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class Keyboard(object):
    def __init__(self,onevent=lambda:None):
        self._keyboard_state={}
        self._downs={}
        self._onevent=onevent
    def handle_event(self,event):
        if event['type'] == appuifw.EEventKeyDown:
            code=event['scancode']
            if not self.is_down(code):
                self._downs[code]=self._downs.get(code,0)+1
            self._keyboard_state[code]=1
        elif event['type'] == appuifw.EEventKeyUp:
            self._keyboard_state[event['scancode']]=0
        self._onevent()
    def is_down(self,scancode):
        return self._keyboard_state.get(scancode,0)
    def pressed(self,scancode):
        if self._downs.get(scancode,0):
            self._downs[scancode]-=1
            return True
        return False
keyboard=Keyboard()
If you have an existing game and want to add a scripting engine to make it more flexible, Python is also a very good choice. But you'll have to learn about IntegratingPythonWithOtherLanguages.
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appuifw.app.screen='full'
img=None
def handle_redraw(rect):
    if img:
        canvas.blit(img)
appuifw.app.body=canvas=appuifw.Canvas(
    event_callback=keyboard.handle_event,
    redraw_callback=handle_redraw)
img=Image.new(canvas.size)
Read [[http://www.onlamp.com/pub/a/python/2002/07/11/pythonnews.html|Humongous Python]] for a case study.
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running=1
def quit():
    global running
    running=0
appuifw.app.exit_key_handler=quit
Read [[http://rene.f0o.com/mywiki/PythonGameProgramming|Python game programming tutorial]]. Or if you need object-oriented design read [[http://pygametutorials.wikidot.com | Yet another game programming tutorial]].
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location=[img.size[0]/2,img.size[1]/2]
speed=[0.,0.]
blobsize=16
xs,ys=img.size[0]-blobsize,img.size[1]-blobsize
gravity=0.03
acceleration=0.05
Two pages that are dedicated for python in 3d are [[http://www.py3d.org/|Python 3D(py3d.org)]] and [[http://www.vrplumber.com/py3d.py|Python 3D Software]]
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import time
start_time=time.clock()
n_frames=0
# To speed things up, we prerender the text.
labeltext=u'Use arrows to move ball'
textrect=img.measure_text(labeltext, font='normal')[0]
text_img=Image.new((textrect[2]-textrect[0],textrect[3]-textrect[1]))
text_img.clear(0)
text_img.text((-textrect[0],-textrect[1]),labeltext,fill=0xffffff,font='normal')
[[http://www.pyweek.org|PyWeek]] is a bi-annual programming challenge that produces several great games.
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while running:
    img.clear(0)
    img.blit(text_img, (0,0))
    img.point((location[0]+blobsize/2,location[1]+blobsize/2),
              0x00ff00,width=blobsize)
    handle_redraw(())
    e32.ao_yield()
    speed[0]*=0.999
    speed[1]*=0.999
    speed[1]+=gravity
    location[0]+=speed[0]
    location[1]+=speed[1]
    if location[0]>xs:
        location[0]=xs-(location[0]-xs)
        speed[0]=-0.80*speed[0]
        speed[1]=0.90*speed[1]
    if location[0]<0:
        location[0]=-location[0]
        speed[0]=-0.80*speed[0]
        speed[1]=0.90*speed[1]
    if location[1]>ys:
        location[1]=ys-(location[1]-ys)
        speed[0]=0.90*speed[0]
        speed[1]=-0.80*speed[1]
    if location[1]<0:
        location[1]=-location[1]
        speed[0]=0.90*speed[0]
        speed[1]=-0.80*speed[1]
        
    if keyboard.is_down(EScancodeLeftArrow): speed[0] -= acceleration
    if keyboard.is_down(EScancodeRightArrow): speed[0] += acceleration
    if keyboard.is_down(EScancodeDownArrow): speed[1] += acceleration
    if keyboard.is_down(EScancodeUpArrow): speed[1] -= acceleration
    if keyboard.pressed(EScancodeHash):
        filename=u'e:\\screenshot.png'
        canvas.text((0,32),u'Saving screenshot to:',fill=0xffff00)
        canvas.text((0,48),filename,fill=0xffff00)
        img.save(filename)
== Books ==
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    n_frames+=1
end_time=time.clock()
total=end_time-start_time
There's also some books that specifically cover game programming in Python:
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print "%d frames, %f seconds, %f FPS, %f ms/frame."%(n_frames,total,
                                                     n_frames/total,
                                                     total/n_frames*1000.)
http://www.charlesriver.com/titles/pythongame.html
  "Game Programming with Python is about building games using Python. It deals with general concepts of game development and specifics that apply when using Python for game development. Some of the general topics include simulations, game architectures, graphics, networking, and user interfaces."

http://www.handysoftware.com/cpif
  "The author set out to write a book like the one he used to teach himself programming at age 12. ... This book has been successfully used by homeschooling families and public school teachers." The library and example code supplied with the book is also available for download.

Game Programming With Python

You can write whole games in Python using PyGame. See a list of other PythonGameLibraries maintained in this Wiki, or this list maintained on DevMaster.net.

If you have an existing game and want to add a scripting engine to make it more flexible, Python is also a very good choice. But you'll have to learn about IntegratingPythonWithOtherLanguages.

Read Humongous Python for a case study.

Read Python game programming tutorial. Or if you need object-oriented design read Yet another game programming tutorial.

Two pages that are dedicated for python in 3d are Python 3D(py3d.org) and Python 3D Software

PyWeek is a bi-annual programming challenge that produces several great games.

Books

There's also some books that specifically cover game programming in Python:

http://www.charlesriver.com/titles/pythongame.html

  • "Game Programming with Python is about building games using Python. It deals with general concepts of game development and specifics that apply when using Python for game development. Some of the general topics include simulations, game architectures, graphics, networking, and user interfaces."

http://www.handysoftware.com/cpif

  • "The author set out to write a book like the one he used to teach himself programming at age 12. ... This book has been successfully used by homeschooling families and public school teachers." The library and example code supplied with the book is also available for download.

GameProgramming (last edited 2020-06-12 09:29:10 by DavidBoddie)

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