Trig_Blog_Sample_4

#include <math.h>
#include <cstdio>
#include <unistd.h>

int main()
{

 struct ship
    {
        float x_pos;
        float y_pos;

       float spd;
    };

    ship my_ship;
    my_ship.spd = 10.0f;
    my_ship.x_pos = 0.0f;
    my_ship.y_pos = 0.0f;

    float angle = -0.785f;
    float x_ratio = cosf(angle);
    float y_ratio = sinf(angle);
    float x_spd_comp = my_ship.spd * x_ratio;
    float y_spd_comp = my_ship.spd * y_ratio;

    int cnt = 0;

    while(cnt < 250)
    {
        my_ship.x_pos += x_spd_comp;
        my_ship.y_pos += y_spd_comp;
        printf("Ship X Pos = %.2f,  Ship Y Pos = %.2f\n", my_ship.x_pos, my_ship.y_pos);
        usleep(75000);
        cnt++;
    }
    return 0;
}