Util code for a platformer

jump.c

#include <stdio.h>

#define max(A, B) (A > B ? A : B)


// Calculate required initial force and downward acceleration for a jump of "height" in "time"
void jump_data(const float time, const int fps, const float height, float *force, float *acc) {
    const float steps = time / (1.0f / fps);
    *force = (height * (1.0f / steps)) * 2.0f;
    *acc = *force / max(steps - 1.0f, 1.0f);

}

// Calculate the downward acceleration needed to reach "max" in "time"
float fall_data(const float time, const int fps, const float max) {
    const float steps = time / (1.0f / fps);
    return max / (max(steps - 1, 0.1f));
}


int main() {

    float jump_force;
    float jump_acc;
    float fall_acc = fall_data(3.666f, 30, 4);

    jump_data(0.3, 30, 30, &jump_force, &jump_acc);

    printf("%.4f %.4f\n", jump_force, jump_acc);
    printf("%.4f\n", fall_acc);
    
    return 0;

}