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//////////////////////////////////////////////////////////////////// This file is submitted to Prof. Buttazzo, Prof. G.Lipari and //// Prof. P. Gai, as project submission on RTOS SHaRK programming//// //// Description: SHIP - BULLETS - ASTEROIDS simulation //// This file creates bullets and asteroids tasks. It Creates a //// ship which is controlled by keyboard. The ship fires bullets //// and hence tries to destroy the asteroids. When the bullets //// hits asteroids, they are destroyed. Moreover, when an //// asteroid hits the ship, the game ends. //// //// Future work: More work has to be done to enhance this game to//// be user friendly game. /////////////////////////////////////////////////////////////////////*Project group members:1. Kailash Kumar Sharma2. RamaKrishnan S.3. Rekh Rao*//**------------Created on :2 nd June 2002File Name :Asteroids.CModified on:<none>Last update:<none>------------**//**//*--------------------------------------------------------------*//* SIMULATION OF BULLETS *//*--------------------------------------------------------------*/#include <kernel/kern.h>#include <drivers/glib.h>#include <drivers/keyb.h>#include <semaphore.h>#include <stdlib.h>#include <math.h>/****************Beginning of Global Variable definition**************/#define YMENU 10 /* menu level */#define XMIN 50#define XMAX 600#define YMIN 100#define YMAX 450#define VEL 5 /* velocity of bullet */#define AD 4 /* The diameter of asteroid */#define BD 2 /* The diameter of bullet */#define ESC 27 /* ASCII code of ESCAPE key */#define MAX_B 35 /* max number of bullets */#define MAX_A 35 /* max number of asteroids */#define BULLETGROUP 1#define ASTEROIDGROUP 1double tick = 1.0; /* system tick = 1 ms */int bullet_period = 40000; /* bullet task period */int bullet_wcet = 1000; /* bullet task wcet */int asteroid_period = 20000; /* asteroid task period */int asteroid_wcet = 1000; /* asteroid task wcet */int asteroid_gp_period = 400000; /* asteroid create task period */int asteroid_gp_wcet = 1000; /* asteroid create task wcet */int sx1 = 52; /* X1 coordinate of ship */int sx2 = 72; /* X2 coordinate of ship */int sy1 = 300; /* Y1 coordinate of ship */int sy2 = 315; /* Y2 coordinate of ship */int a_num = 0; /* Number of active asteroids */int b_num = 0; /* Number of active bullets */int astr_speed = 100000; /* Delay counter for Asteroid */int bult_speed = 10000; /* Delay counter for Bullet */int astr_rate = 100000; /* Delay counter for Asteroid create */int bullet_col = 15; /* Bullet colour */int ship_col = 12; /* Ship colour */int points = 0;int game_finish = 0;PID pid, apid, mapid; /* Task IDs */sem_t mutex;char retbuf[20];/*-----------------End of Global Variable definition------------------*//*// This function draws bullet*/void draw_bullet(int x, int y, int c){sem_wait(&mutex);grx_disc(x, y, BD, c);sem_post(&mutex);}/*// This function draws asteroid*/void draw_asteroid(int x, int y, int c){sem_wait(&mutex);grx_disc(x, y, AD, c);sem_post(&mutex);}/*// This function draws ship*/void draw_ship(int x1, int y1, int x2, int y2, int c){sem_wait(&mutex);grx_box(x1, y1, x2, y2, c);sem_post(&mutex);}/*// This is an asteroid task. This task is responsible for controlling// the game. This task checks if it encouters a bullet or ship, while// travelling. If the encoutered object is a bullet, the task gets// destroyed. If the encoutered object is ship, the game terminates!!!*/TASK asteroid(void *arg){int x=0, y=0;int ox=0, oy=0;int col=0;int outx=0;int i = (int)arg;int j;int scan_col1, scan_col2, scan_col3;int scan_col4, scan_col5, scan_col6;x = ox = (XMAX-10); /* X coordinate of the asteroid */y = oy = (YMIN+10+(rand()%(YMAX-YMIN-10))); /* y = [YMIN,YMAX] */col = 2 + i; /* color of asteroid */while (1) {x -= 5;outx = (x<=XMIN);// **** START for scanning for bullets and ship ****scan_col1 = grx_getpixel(x-4, y-4);scan_col2 = grx_getpixel(x-4, y+4);scan_col3 = grx_getpixel(x-7, y);scan_col4 = grx_getpixel(x-4, y-4);scan_col5 = grx_getpixel(x-4, y+4);scan_col6 = grx_getpixel(x-7, y);// **** END for scanning for bullets and ship ****if((scan_col1 == ship_col) || (scan_col2 == ship_col) ||(scan_col3 == ship_col)){game_finish = 1;}else if((outx) || (game_finish == 1)){draw_asteroid(ox, oy, 0);a_num--;break;}else if((scan_col4 == bullet_col) ||(scan_col5 == bullet_col) ||(scan_col6 == bullet_col)) {draw_asteroid(ox, oy, 0);a_num--;points++;break;}else {draw_asteroid(ox, oy, 0);draw_asteroid(x, y, col);ox = x; oy = y;}for(j=0; j <= astr_speed; j++);task_endcycle();}}/*// Function to convert integer to string*/char *itos(int n){sprintf(retbuf," %d ", n);return(retbuf);}/*// This task is created by main and runs in parallel with it. It// is responsible for creating asteroids at random location periodically.*/TASK a_gp(void *arg){int j;HARD_TASK_MODEL n;while (1) {if (game_finish == 1) break;else if (a_num < MAX_A) {grx_text("POINTS", XMAX-150, YMENU+50, 13, 0);grx_text(itos(points), XMAX-145, YMENU+65, 14, 0);hard_task_default_model(n);hard_task_def_ctrl_jet (n);hard_task_def_arg (n, (void *)a_num);hard_task_def_wcet (n, asteroid_wcet);hard_task_def_mit (n, asteroid_period);hard_task_def_group (n, ASTEROIDGROUP);hard_task_def_usemath (n);mapid = task_create("asteroid", asteroid, &n, NULL);if (mapid == NIL) {grx_close();perror("Could not create task <asteroid>");sys_abort(1);}task_activate(mapid);a_num++;for (j=0; j <= astr_rate; j++);}task_endcycle();}}/*// This is a bullet task. It traverses it originates from the ship and// and traverses its path from left to right. It hits the asteroids and// destroys them.*/TASK bullet(void *arg){int x=0, y=0;int ox=0, oy=0;int outx=0;int j;x = ox = (sx2+(2*BD)); /* Fire bullet from sx2 coordinate of ship */y = oy = (sy2-8); /* Fire bullet from sy2 coordinate of ship */// col = 2 + i; /* color of bullet*/while (1) {x += 5;outx = (x>=XMAX);if((outx) || (game_finish == 1)) {draw_bullet(ox, oy, 0);b_num--;break;}else {draw_bullet(ox, oy, 0);draw_bullet(x, y, bullet_col);ox = x; oy = y;}for(j=0; j <= bult_speed; j++);task_endcycle();}}/*// This function is called when the system exits*/void byebye(void *arg){grx_close();kern_printf("Your ship is hit!!!Bye Bye!\n");}/****************************** MAIN ******************************//*// MAIN is responsible for creating ship. It controls the motion of// ship and fires bullets (creates bullet task) to destroy asteroids.*/int main(int argc, char **argv){HARD_TASK_MODEL m;HARD_TASK_MODEL a;char c; /* character from keyboard */TIME seme; /* used to init the random seed *//* Set the exception handler */set_exchandler_grx();/* Set the closing function */sys_atrunlevel(byebye, NULL, RUNLEVEL_BEFORE_EXIT);/* graphic card Initialization */if (grx_init() < 1) {sys_abort(1);}if (grx_open(640, 480, 8) < 0) {kern_printf("GRX Err\n");sys_abort(1);}kern_printf("Video card ok!\n");/* Intialization of graphics window */grx_rect(XMIN-BD-1, YMIN-BD-1, XMAX+BD+1, YMAX+BD+1, 14);grx_text("Simulation of a SHIP-BULLETS-ASTEROIDS",XMIN, YMENU+10, 13, 0);grx_text("SPACE create a bullet", XMIN, YMENU+20, 12, 0);grx_text("ESC exit to DOS" , XMIN, YMENU+30, 14, 0);grx_text("Developers: Kailash Kumar Sharma",XMIN, YMENU+40, 12, 0);grx_text(" Ramakrishnana S. ",XMIN, YMENU+50, 12, 0);grx_text(" Rekha Rao ",XMIN, YMENU+60, 12, 0);grx_text("UP :Press E", XMIN+40, YMAX+10, 12, 0);grx_text("DOWN :PRESS C", XMIN+40, YMAX+20, 12, 0);grx_text("LEFT :PRESS S", XMAX-200, YMAX+10, 12, 0);grx_text("RIGHT :PRESS F", XMAX-200, YMAX+20, 12, 0);/* Draws a default ship */draw_ship(sx1, sy1, sx2, sy2, ship_col);/* randomize!!!! */seme = sys_gettime(NULL);srand(seme);/******Creating a task that creates Asteroids randomly*******/hard_task_default_model(a);hard_task_def_ctrl_jet (a);hard_task_def_arg (a, (void *)a_num);hard_task_def_wcet (a, asteroid_wcet);hard_task_def_mit (a, asteroid_gp_period);hard_task_def_usemath (a);apid = task_create("a_gp", a_gp, &a, NULL);if (apid == NIL) {grx_close();perror("Could not create task <asteroid>");sys_abort(1);}task_activate(apid);/******END of Creating a task that creates Asteroids randomly*******//******* Infinite loop to create bullets and move the ship *******/do {if(game_finish == 1) {grx_text("GAME OVER !!! ", 300, 300, 13, 0);break;}c = keyb_getch(BLOCK);// **** Begin of code to fire bullet ****if ((c == ' ') && (b_num < MAX_B)) {hard_task_default_model(m);hard_task_def_ctrl_jet (m);hard_task_def_arg (m, (void *)b_num);hard_task_def_wcet (m, bullet_wcet);hard_task_def_mit (m, bullet_period);hard_task_def_group (m, BULLETGROUP);hard_task_def_usemath (m);pid = task_create("bullet", bullet, &m, NULL);if (pid == NIL) {grx_close();perror("Could not create task <bullet>");sys_abort(1);}task_activate(pid);b_num++;}//**** END of code to fire bullet ****//**** BEGIN of code to control the position of ship ****else if ((c == 's') && (sx1 > (XMIN+10))) {draw_ship(sx1,sy1,sx2,sy2,0);sx1 -=5; sx2-=5;draw_ship(sx1,sy1,sx2,sy2,12);}else if ((c == 'f') && (sx2 < (XMAX-10))) {draw_ship(sx1,sy1,sx2,sy2,0);sx1+=5; sx2+=5;draw_ship(sx1,sy1,sx2,sy2,12);}else if ((c == 'e') && (sy1 > (YMIN+10))) {draw_ship(sx1,sy1,sx2,sy2,0);sy1-=5; sy2-=5;draw_ship(sx1,sy1,sx2,sy2,12);}else if ((c == 'c') && (sy2 < (YMAX-10))) {draw_ship(sx1,sy1,sx2,sy2,0);sy1+=5; sy2+=5;draw_ship(sx1,sy1,sx2,sy2,12);}//**** END of code to control the position of ship ****} while (c != ESC);/******* END of Infinite loop to create bullets *******/do{c = keyb_getch(BLOCK);} while (c != ESC);sys_end();return 0;}/*----------------END OF PROGRAM--------------------------------------*/