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program.c
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program.c
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/* EECE259 Assignment 4 Solution
* Final Project: "Hit the Balloons!"
* Date: April 8, 2011
*
* @author: Navid Fattahi <nfattahi (at) interchange.ubc.ca>
* Shayan Farahbakhsh <shayanf23 (at) hotmail.com>
*
*/
#include "259macros.h"
#define MAX_MISS 20 //Maximum number of missed hits before losing
unsigned char hex[10] =
{DIGIT0, DIGIT1, DIGIT2, DIGIT3, DIGIT4,
DIGIT5, DIGIT6, DIGIT7, DIGIT8, DIGIT9};
/* Global Variables */
//General Variables
int time = 0;
//GUI variables
unsigned short BLACK, WHITE, RED, GREEN, BLUE;
unsigned short dragColor;
unsigned int xCircle = 0;
unsigned int yCircle = 0;
//Game variables
int circleRad = 30;
int missed = 0;
int restart = 0;
int score = 0;
int increment = 1;
int pause = 0;
//Devices
int mouse_status;
int mouse_button;
int xMouse, yMouse, dxMouse, dyMouse;
int musicCounter = 0;
/* Function Declarations */
//Graphics, I/O functions
void drawCircle(int x, int y, int radius, unsigned short color);
void drawCursor(int x, int y);
void printStr(unsigned int x, unsigned int y, char* number);
void welcomeMessage();
void emptyScreen();
void display7Seg(int num);
void playMusic(short left, short right);
unsigned short getColor(int x, int y);
//Math and helper functions
void reverse(char *str,int len);
double random();
int abs(int num);
char* itoa(unsigned int number);
//Interrupt-related functions
void balloonISR();
void enableBalloonIRQ( int interval_cycles, ptr_to_function newISR );
void keyISR();
void enableKeyIRQ( int keys_to_watch, ptr_to_function newISR );
short music[] = {
#include "piano.h"
};
int musicLength = sizeof(music);
short effect[] = {
#include "effect.h"
};
int effectLength = sizeof(effect);
/* Generates a standard page for the boot-up of the program */
void welcomeMessage()
{
int i = 0;
//in order to prevent the GUI stuff show up...
disableInterrupt(IRQ_COUNTER);
fillScreen(BLUE);
printStr(12, 11, "Hit the Balloon!");
printStr(9, 13, "EECE 259 Final Project");
printStr(10, 17, "By: Navid Fattahi");
printStr(10, 18, "Shayan Farahbakhsh");
for(i = 0; i < 40000000; i++);
//in order to get the GUI stuff show up again!
enableInterrupt(IRQ_COUNTER);
printStr(12, 11, " ");
printStr(9, 13, " ");
printStr(10, 17, " ");
printStr(10, 18, " ");
}
/* Sends the sounds from the buffer to the right and left sound outputs */
void playMusic(short left, short right)
{
int sampleSound;
do{
sampleSound = *pSNDRDY;
sampleSound = sampleSound>>24;
} while(sampleSound == 0);
*pSNDL = left;
*pSNDR = right;
}
/* Displays "num" on the 7segment LEDs */
void display7Seg(int num)
{
unsigned int dig3,dig2,dig1,dig0;
unsigned int temp = num;
dig3=temp/1000; //extract each digit by dividing by 10^n
dig3=hex[dig3]; //find the corresponding HEX LED value from the table
dig3 = dig3 << 24; //shift the digit to the corresponding space
temp=temp%1000;
dig2=temp/100;
dig2=hex[dig2];
dig2 = dig2 << 16;
temp=temp%100;
dig1=temp/10;
dig1=hex[dig1];
dig1 =dig1 << 8;
dig0=temp%10;
dig0=hex[dig0];
//OR all digits together and load onto the 7seg LEDs
*pHEX7SEG = dig3 | dig2 | dig1 | dig0;
}
/* Interrupts every 1 second and draws a circle on the screen (randomly)
and updates the GUI variables (i.e. score etc.); it also updates the
7seg LEDs */
void balloonISR()
{
/* remember: no waiting in an ISR */
time ++;
*pLEDG = time;
// show the level on LEDR
if(increment == 1)
*pLEDR = 1;
else if(increment == 2)
*pLEDR = 2;
else if(increment == 3)
*pLEDR = 4;
char* string = 0;
fillScreen(BLACK);
xCircle = (int)(random() * 1200);
yCircle = (int)(random() * 900);
// Darw the balloon and update the cursor location */
drawCircle(xCircle, yCircle, circleRad, RED);
drawPixel( xMouse, yMouse, WHITE );
//Create the user menu
printStr(1, 1, "Level: ");
string = itoa(increment);
printStr(9, 1, string);
printStr(1, 2, "Score: ");
string = itoa(score);
printStr(9, 2, string);
printStr(1, 3, "Missed: ");
string = itoa(missed);
printStr(9, 3, string);
printStr(1, 4, "Time: ");
string = itoa(time);
printStr(9, 4, string);
/*
string = itoa(xCircle);
printStr(1, 4, string);
string = itoa(yCircle);
printStr(1, 5, string);
*/
display7Seg(score);
/* clear source of COUNTER interrupt before returning */
*pCOUNTER_STATUS = 1; /* Device: send interrupts, clear existing interrupt */
}
/* This routine configures device-specific details about interrupts */
void enableBalloonIRQ( int interval_cycles, ptr_to_function newISR )
{
registerISR( IRQ_COUNTER, newISR ); /* specify which ISR to call with COUNTER interrupts */
*pCOUNTER = -interval_cycles; /* initial counter value */
*pCOUNTER_RELOAD = -interval_cycles; /* on overflow, start with this value */
*pCOUNTER_STATUS = 1; /* Device: send interrupts, clear existing interrupt */
enableInterrupt( IRQ_COUNTER ); /* CPU: allow it to receive COUNTER interrupts */
}
/* This function clears the GUI variables from the screen */
void emptyScreen()
{
int i;
for(i = 0; i < 5; i++)
printStr(1, i, " ");
}
/* This ISR gets called whenever a KEY is pressed down:
KEY1 restarts the program
KEY2 starts a new game after a GAME OVER
*/
void keyISR()
{
/* remember: no waiting in an ISR */
int keypress = *pKEY_EDGECAPTURE;
int i = 0;
int x, y;
//Reset Key
if( keypress & 0x02 )
{
score = 0;
missed = 0;
time = 0;
emptyScreen();
fillScreen(BLUE);
printStr(12, 15, "GAME RESTARTED!");
for(i = 0; i < 30000000; i++);
printStr(12, 15, " ");
}
//New game key
if( keypress & 0x04 && missed >= MAX_MISS)
{
score = 0;
missed = 0;
time = 0;
emptyScreen();
fillScreen(BLUE);
printStr(7, 15, "Good Luck in the new game!");
for(i = 0; i < 30000000; i++);
printStr(7, 15, " ");
}
/* clear source of KEY interrupt before returning */
*pKEY_EDGECAPTURE = 0;
}
/* This routine configures device-specific details about interrupts */
void enableKeyIRQ( int keys_to_watch, ptr_to_function newISR )
{
registerISR( IRQ_KEY, newISR );
/* specify which ISR to call with KEY interrupts */
*pKEY_IRQENABLE = keys_to_watch;
/* Device: to send interrupts for KEY3,KEY2 */
enableInterrupt( IRQ_KEY );
/* CPU: allow it to receive KEY interrupts */
}
/* Generates a random number between 0 and 1 (double) */
double random()
{
unsigned int num = *pCOUNTER;// & 0xFF;
int hi, lo;
//high 16 bits
hi=num >> 16;
lo = num & 0xffff;
num = hi ^ lo;
hi=num >> 8;
//low 16 bits
lo = num & 0xff;
//hi XOR lo
num = hi ^ lo;
//this will get us a number between 0 and 1
double rand = (double)num/1000;
return rand;
}
/* Takes the absolute value of num */
int abs(int num)
{
if (num >= 0)
return num;
else
return -num;
}
/* Draws a circle with radius "radius" pixels with the center
at position (x,y) and fills it with color "color" */
void drawCircle(int x, int y, int radius, unsigned short color)
{
int xPos = x;
int yPos = y;
//Max radius is 100 pix
if (radius >= 100)
radius = 100;
for(x = -100; x < 100; x++)
{
for(y = -100; y < 100; y++)
{
//using the formula x^2+y^2=c^2
if(x*x + y*y < radius*radius)
drawPixel(x+xPos, y+yPos, color);
}
}
}
/*Draws a cursor on the screen */
void drawCursor(int x, int y)
{
int xPos = x;
int yPos = y;
for(x = -20; x < 20; x++)
{
for(y = -20; y < 20; y++)
{
if(x*x + y*y < 3)
drawPixel(x+xPos, y+yPos, WHITE);
}
}
}
/* reorders an array of characters in reverse; this function
is used by itoa function */
void reverse(char *str,int len)
{
int i=0;
char ch;
for(i=0;i<=(len-1)/2;i++)
{
ch=str[i];
str[i]=str[len-1-i];
str[len-1-i]=ch;
}
}
/* takes an integer as input and converts it into an array of
characters (a string); we mainly use this function to print
out our variables on the screen (extremely helpful for
debugging purposes) */
char* itoa(unsigned int number)
{
char *str=malloc(sizeof(char)*20);
int negFlag=0,pos=0;
//taking care of the negative number situations
//(although the input of this function is an unsigned
//integer, having the function more generalized can be
//useful in the future)
if(number<0)
{
negFlag=1;
number=-number;
}
//devide and modulus applications would get us the digits (reversed order)
while(number>0)
{
str[pos++]='0'+number%10;
number=number/10;
}
if(negFlag)
{
str[pos++]='-';
}
str[pos]='\0';
//reverse the order (to get the original thing)
reverse(str,pos);
return str;
}
/* prints an array of characters (string) on the screen */
void printStr(unsigned int x, unsigned int y, char* str)
{
int i = 0;
if(str[i] == '\0')
drawChar (x+i, y, '0');
//use a loop to draw all the chars one by one
while(str[i] != '\0')
{
int ch = str[i];
drawChar (x+i, y, ch);
i++;
}
}
/* Gets the color of the pixel at position (x,y) and
returns it as an unsigned short value (color format) */
unsigned short getColor(int x, int y)
{
//this is kind of the reverse of drawPixel() on 259macros.h
unsigned short color;
volatile unsigned short *pPixel;
pPixel = getPixelAddr(x,y);
color = *pPixel;
return color;
}
/* Main Function */
int main( int argc, char *argv[] )
{
//Color constants' initilizations
BLACK = makeColour( 0, 0, 0 );
WHITE = makeColour(63,63,63 );
RED = makeColour(63, 0, 0 );
GREEN = makeColour( 0,63, 0 );
BLUE = makeColour( 0, 0,63 );
//Initializations
initInterrupts();
initScreen();
initChars();
//Enable Interrupts
enableBalloonIRQ(1000*ONE_MS, balloonISR );
int keys_to_watch = 0x04 | 0x02 ;
enableKeyIRQ( keys_to_watch, keyISR );
// fillScreen(BLACK);
int i = 0;
welcomeMessage();
mouse_status = resetPS2();
int left, right;
int lastTime;
while(1)
{
//in case of losing (past 20 misses)
if(missed >= MAX_MISS)
{
disableInterrupt(IRQ_COUNTER);
fillScreen(RED);
emptyScreen();
printStr(10, 10, "Too many misses...");
printStr(14, 13, "GAME OVER!");
printStr(8, 16, "Press KEY2 to restart");
for(i = 0; i < 30000000; i++);
// while(missed >= 20);
// printStr(8, 20, "HOOOOOORAY");
enableInterrupt(IRQ_COUNTER);
printStr(10, 10, " ");
printStr(14, 13, " ");
printStr(8, 16, " ");
}
drawChar (1, 6, ' ');
disableInterrupt(IRQ_COUNTER);
if (*pSWITCH != 0)
{
if (*pSWITCH&1)
{
increment = 1;
circleRad = 30;
}
else if (*pSWITCH&2)
{
increment = 2;
circleRad = 20;
}
else if (*pSWITCH&4)
{
increment = 3;
circleRad = 15;
}
}
else
{
increment = 1;
circleRad = 30;
}
enableInterrupt(IRQ_COUNTER);
/// MUSIC PLAYER ///
// drawChar (1, 5, 16);
if(musicCounter == 0)
{
left = 0;
right = 1;
}
if(musicCounter < musicLength/4)
{
i = musicCounter;
for(i; i<musicCounter+200; i++)
{
playMusic(music[left], music[right]);
left+=2;
right+=2;
}
musicCounter += 200;
}
else
{
musicCounter = 0;
left = 0;
right = 1;
}
/// MUSIC ///
if ( mouse_status == PS2_MOUSE )
{
// drawChar (1, 5, 22);
if( getMouseMotion( &dxMouse, &dyMouse, &mouse_button ) )
{
if( mouse_button & MOUSE_BUTTON1 )
{
if(getColor(xMouse+1, yMouse) == RED)
{
score += increment;
drawCircle(xCircle, yCircle, 30, BLACK);
/// SOUND EFFECT ///
int sleft = 0;
int sright = 1;
int i;
for(i=0; i<effectLength/4; i++)
{
playMusic(effect[sleft], effect[sright]);
sleft+=2;
sright+=2;
}
sleft = 0;
sright = 1;
/// SOUND EFFECT ///
}
else
{
if(time != lastTime)
{
missed++;
time = lastTime;
}
}
}
/* if( mouse_button & MOUSE_BUTTON2 )
fillScreen( BLACK );
if( mouse_button & MOUSE_BUTTON3 )
{
printStr(17, 13, "PAUSED!");
disableInterrupts(IRQ_COUNTER);
while( 1 )
{
if( mouse_button & MOUSE_BUTTON2 )
{
enableInterrupts(IRQ_COUNTER);
printStr(17, 13, " ");
break;
}
}
}
*/
if(getColor(xMouse+1, yMouse) == RED)
dragColor = RED;
else
dragColor = BLACK;
drawPixel( xMouse, yMouse, dragColor );
xMouse += dxMouse;
yMouse -= dyMouse;
xMouse = max( 0, min( xMouse, MAX_X_PIXELS-1 ) );
yMouse = max( 0, min( yMouse, MAX_Y_PIXELS-1 ) );
drawPixel( xMouse, yMouse, WHITE );
//drawCursor(xMouse, yMouse);
}
}
}
return 0;
}