Learn Pygame the hard way

Pygame is a python library for game development with openGL capabilities.

Here you can find the basic concept for game development in python.
Lets start the basic.
First you need to get pygame.You can download it from pygame.org.
Then download a book called beginning-game-development-with-python-and-pygame-from-novice-to-professional
This book is really great.
The link to download this book is
http://www.scribd.com/doc/59912539/Beginning-Game-Development-With-Python-and-Pygame-From-Novice-to-Professional-9781590598726-29808

To start pygame you must have python basics.
The best book to learn python is core python programming.
The link to download this book link is


The solution of the programs given at the end of the chapter can be found here.

Ok lets begin python gaming..............

Basic Program for Pygame

#!/usr/bin/env python
#program to demonstrate the basic image and mouse handling
background_image_filename='jython.jpg'
mouse_image_filename='circle.png'

import pygame
from pygame.locals import *
from sys import exit

pygame.init()

screen = pygame.display.set_mode((640,480),0,32)
pygame.display.set_caption("hello world!")

background = pygame.image.load(background_image_filename).convert()
mouse_cursor=pygame.image.load(mouse_image_filename).convert_alpha()

while True:

for event in pygame.event.get():
if event.type==QUIT:
exit()

screen.blit(background,(0,0))

x,y = pygame.mouse.get_pos()
x-=mouse_cursor.get_width()/2
y-=mouse_cursor.get_height()/2
screen.blit(mouse_cursor,(x,y))

pygame.display.update()

Second basic program for event mouse handling with MATRIX like display

#! /usr/bin/env python

import pygame
from pygame.locals import*
from sys import exit

pygame.init()
SCREEN_SIZE =(800,600)
screen=pygame.display.set_mode(SCREEN_SIZE,0,32)

font = pygame.font.SysFont("arial",16);
font_height = font.get_linesize()
event_text=[]

while True:

event=pygame.event.wait()
event_text.append(str(event))
event_text=event_text[-SCREEN_SIZE[1]/font_height:]

if event.type == QUIT:
exit()

screen.fill((0,0,0))

y=SCREEN_SIZE[1]-font_height
for text in reversed(event_text):
screen.blit(font.render(text,True,(0,255,0)),(0,y))
y-=font_height

pygame.display.update()

Moving bitmaps in allegro

#include "airstrike2.h"

#include

#include

/////////////////////////////////////////////////////////////////////////

// drawtank function

// construct the plane using drawing functions

/////////////////////////////////////////////////////////////////////////

void drawplane(int num)

{

int x = planes[num].x;

int y = planes[num].y;

//draw tank body and turret

rectfill(screen, x-11, y-11, x+11, y+11, planes[num].color);

//line(screen, 150,230, 180, 230, 15);

//line(screen,x-20,y,x+20,y,8);//copy of ahead line

// line(screen, 150,250, 180, 250, 15);

//line(screen, x-20,y, x+20, y, 15);//copy of ahead line

//line(screen, 180, 230, 200, 240, 15);

//line(screen, 180, 250, 200, 240, 15);

//arc(screen, 182, 190, itofix(-65), itofix(-39), 60, 15);

//arc(screen, 132+x, 140+y, itofix(-65), itofix(-39), 60-x, 15-y);//copy of ahead line

//arc(screen, 182, 290, itofix(39), itofix(65), 60, 15);

//floodfill(screen, 130, 240, 15);

/*line(screen, 135, 232, 150, 230, 15);

line(screen, 135, 248, 150, 250, 15);

line(screen, 115, 232, 135, 232, 15);

line(screen, 115, 248, 135, 248, 15);

line(screen, 100, 234, 115, 232, 15);

line(screen, 100, 246, 115, 248, 15);

ellipsefill(screen, 100, 240, 30, 3, 9);

line(screen, 72, 286, 102, 243, 15);

line(screen, 72, 194, 102, 237, 15);

line(screen, 62, 194, 72, 194, 15);

line(screen, 62, 286, 72, 286, 15);

line(screen, 62, 194, 75, 239, 15);

line(screen, 62, 286, 75, 241, 15);

floodfill(screen, 70, 200, 15);

line(screen, 160, 230, 150, 190, 15);

line(screen, 160, 250, 150, 290, 15);

line(screen, 150, 190, 130, 190, 15);

line(screen, 150, 290, 130, 290, 15);

line(screen, 130, 190, 130, 232, 15);

line(screen, 130, 290, 130, 248, 15);

ellipsefill(screen, 150, 200, 18, 4, makecol(255, 0, 0));

ellipsefill(screen, 150, 280, 18, 4, makecol(255, 0, 0));*/



/*

line(screen, x-150,y-230, x+180, x+230, 15);

line(screen, x-150,y-250, x+180, x+250, 15);

//line(screen, 180, 230, 200, 240, 15);

//line(screen, 180, 250, 200, 240, 15);

arc(screen, x-182, y-190, itofix(-65), itofix(-39), x+60, y+15);

arc(screen, x-182, y-290, itofix(39), itofix(65), x+60, y+15);

//floodfill(screen, 130, 240, 15);

line(screen, x-135, y-232, x+150, y+230, 15);

line(screen, x-135, y-248, x+150,y+250, 15);

line(screen, x-115, y-232, x+135, y+232, 15);

line(screen, x-115, y-248, x+135, y+248, 15);

line(screen, x-100, y-234, x+115, y+232, 15);

line(screen, x-100, y-246, x+115, y+248, 15);

ellipsefill(screen, x-100, y-240, x+30, y+3, 9);

line(screen, x-72, y-286, x+102, y+243, 15);

line(screen, x-72, y-194, x+102, y+237, 15);

line(screen, x-62, y-194, x+72, y+194, 15);

line(screen, x-62, y-286, x+72, y+286, 15);

line(screen, x-62, y-194, x+75, y+239, 15);

line(screen, x-62, y-286, x+75, y+241, 15);

floodfill(screen, 70, 200, 15);

line(screen, x-160, y-230, x+150, y+190, 15);

line(screen, x-160, y-250, x+150, y+290, 15);

line(screen, x-150, y-190, x+130, y+190, 15);

line(screen, x-150, y-290, x+130, y+290, 15);

line(screen, x-130, y-190, x+130, y+232, 15);

line(screen, x-130, y-290, x+130, y+248, 15);

ellipsefill(screen, x-150, y-200, x+18, y+4, makecol(255, 0, 0));

ellipsefill(screen, x-150, y-280, x+8, y+4, makecol(255, 0, 0));*/





switch (dir)

{

case 1:

//line(screen,x-20,y,x+20,y,8);

//line(screen,x-20,y+30,x+20,y+30,15);

//arc(screen, x-20, 40+y, itofix(-65+x), itofix(-39+y),x+20,y-40);

rectfill(screen, x-11, y-11, x+11, y+11, planes[num].color);



break;

}

}

/////////////////////////////////////////////////////////////////////////

// eraseplane function

// erase the tank using rectfill

/////////////////////////////////////////////////////////////////////////

void eraseplane(int num)

{

//calculate box to encompass the tank

int left = planes[num].x - 20;

int top = planes[num].y - 20;

int right = planes[num].x + 20;

int bottom = planes[num].y + 20;

//erase the plane

rectfill(screen, left, top, right, bottom, 12);



}

/////////////////////////////////////////////////////////////////////////

// moveplane function

// move the plane in the current direction

/////////////////////////////////////////////////////////////////////////

void moveplane(int num)

{

int speed = planes[num].speed;

//update plane position based on direction

switch(dir)

{

case 1:

planes[num].x += speed;

break;

}

}



/////////////////////////////////////////////////////////////////////////

// forward function

// increase the plane’s speed

/////////////////////////////////////////////////////////////////////////

void forward(int num)

{

planes[num].speed=planes[num].speed+4;

if (planes[num].speed > MAXSPEED)

planes[num].speed = MAXSPEED;

}

/////////////////////////////////////////////////////////////////////////

// backward function

// decrease the plane’s speed

/////////////////////////////////////////////////////////////////////////

void backward(int num)

{

planes[num].speed=planes[num].speed-4;

if (planes[num].speed < -MAXSPEED) planes[num].speed = -MAXSPEED; } ///////////////////////////////////////////////////////////////////////// // turnleft function // rotate the plane counter-clockwise ///////////////////////////////////////////////////////////////////////// void up(int num) { planes[num].y=planes[num].y-2; } void down(int num) {planes[num].y=planes[num].y+2;} ///////////////////////////////////////////////////////////////////////// // getinput function // check for player input keys ///////////////////////////////////////////////////////////////////////// void getinput() { //hit ESC to quit if (key[KEY_ESC]) gameover = 1; if (key[KEY_RIGHT]) forward(0); if (key[KEY_LEFT]) backward(0); if (key[KEY_UP]) up(0); if (key[KEY_DOWN]) down(0); //short delay after keypress rest(10); } ///////////////////////////////////////////////////////////////////////// // setupplanes function // ///////////////////////////////////////////////////////////////////////// void setupplanes() { planes[0].x = 50; planes[0].y = 50; planes[0].speed = 0; planes[0].color = 9; } void setupenemy() { planes[1].x = 590; planes[1].y = 50; planes[1].speed = 0; planes[1].color = 5; } ///////////////////////////////////////////////////////////////////////// // collission function // checkpath and getpixel ///////////////////////////////////////////////////////////////////////// checkpath(int x1,int x2,int x3,int x4,int y1,int y2,int y3,int y4) { if(getpixel(screen,planes[0].x,planes[0].y)) { rectfill(screen,50,10,50,10,6); } } ///////////////////////////////////////////////////////////////////////// // setupscreen function // set up the graphics mode and game screen ///////////////////////////////////////////////////////////////////////// void setupscreen() { //set video mode int ret = set_gfx_mode(MODE, WIDTH, HEIGHT, 0, 0); if (ret != 0) { allegro_message(allegro_error); return; } //draw screen border rect(screen, 0, 12, SCREEN_W-1, SCREEN_H-1, 4); rect(screen, 1, 13, SCREEN_W-2, SCREEN_H-2, 4); floodfill(screen, 70, 200, 12); } //set up music int setupsound() { if(install_sound(DIGI_AUTODETECT, MIDI_AUTODETECT, NULL)) { allegro_message("Sound Error: %s", allegro_error); return 1; }set_volume(255, 255); //digital and music to max levels SoundPlayDigi(SAMPLE* samp, int vol=-1, int loopflag=false); } ///////////////////////////////////////////////////////////////////////// // main function // start point of the program ///////////////////////////////////////////////////////////////////////// void main(void) { //initialize everything allegro_init(); install_keyboard(); install_timer(); srand(time(NULL)); setupscreen(); setupplanes(); setupenemy(); setupmusic(); //game loop while(!gameover) { //erase the planes eraseplane(0); eraseplane(1); //move the planes moveplane(0); //draw the planes drawplane(0); drawplane(1); //check for keypresses if (keypressed()) getinput(); //slow the game down (adjust as necessary) rest(30); } //checkpath(); //end program allegro_exit(); } END_OF_MAIN(); ///////////////////////////////////////// ////////////HEADER FILE //////////////////////////////////////////// #ifndef _PLANE_H #define _PLANE_H #include "allegro.h" //define some game constants #define MODE GFX_AUTODETECT_WINDOWED #define WIDTH 640 #define HEIGHT 480 #define MAXSPEED 2 #define dir 1 //define PALNE structure struct Plane { int x,y; int speed; int color; int score; } planes[1]; int gameover = 0; void drawplane(int num); void eraseplane(int num); void moveplane(int num); void forward(int num); void backward(int num); void getinput(); void setupplanes(); void setupscreen(); void collision(); #endif

ThermoDynamics Notes(10th april)

Here is three pdf's of the notes of thermodynamics.

http://www.scribd.com/doc/52731100/Engineering-Thermodynamics-Lect-1
http://www.scribd.com/doc/52731039/First-and-Second-law-Lect-2-Compatibility-Mode