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https://github.com/byteworksinc/ORCA-C.git
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102 lines
2.6 KiB
C++
102 lines
2.6 KiB
C++
/************************************************
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*
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* Artillery
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*
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* This classic interactive text game lets you
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* pick the angle of your artillery gun in
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* an attempt to knock out the enemy position.
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* The computer picks a secret distance. When
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* you fire, you will be told how much you
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* missed by, and must fire again. The object
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* is to hit the target with the fewest shells.
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*
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************************************************/
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#pragma keep "Artillery"
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#pragma lint -1
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#include <stdio.h>
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#include <stdlib.h>
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#include <time.h>
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#include <math.h>
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#include <misctool.h>
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#define FALSE 0 /* boolean constants */
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#define TRUE 1
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#define BLASTRADIUS 50.0 /* max distance from target for a hit */
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#define DTR 0.01745329 /* convert from degrees to radians */
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#define VELOCITY 434.6 /* muzzle velocity */
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int main(void)
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{
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float angle, /* angle */
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distance, /* distance to the target */
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flightTime, /* time of flight */
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x, /* distance to impact */
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vx,vy; /* x, y velocities */
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int done, /* is there a hit, yet? */
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tries, /* number of shots */
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i; /* loop variable */
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/* choose a distance to the target */
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srand((int) time(NULL));
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for (i = 0; i < 100; ++i)
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rand();
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distance = rand()/5.55373;
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/* not done yet... */
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done = FALSE;
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tries = 1;
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/* shoot 'til we hit it */
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do {
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/* get the firing angle */
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printf("Firing angle: ");
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scanf("%f", &angle);
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/* compute the muzzle velocity in x, y */
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angle *= DTR;
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vx = cos(angle)*VELOCITY;
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vy = sin(angle)*VELOCITY;
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/* find the time of flight */
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/* (velocity = acceleration*flightTime, two trips) */
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flightTime = 2.0*vy/32.0;
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/* find the distance */
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/* (distance = velocity*flightTime) */
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x = vx*flightTime;
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/* see what happened... */
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if (fabs(distance-x) < BLASTRADIUS) {
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done = TRUE;
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printf("A hit, after %d", tries);
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if (tries == 1)
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printf(" try!\n");
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else
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printf(" tries!\n");
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switch (tries) {
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case 1:
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printf("(A lucky shot...)\n");
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break;
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case 2:
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printf("Phenomenal shooting!\n");
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break;
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case 3:
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printf("Good shooting.\n");
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break;
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otherwise:
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printf("Practice makes perfect - try again.\n");
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}
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}
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else if (distance > x)
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printf("You were short by %d feet.\n", (int)(distance-x));
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else
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printf("You were over by %d feet.\n", (int)(x-distance));
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++tries;
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}
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while (!done);
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}
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