Code - R0

#ifndef HEADER_ECDD855FAF0523A5
#define HEADER_ECDD855FAF0523A5

#include "rnd.h"
#include "vector2.h"
#include "simplexNoise.h"

typedef struct RndWalker_t
{
    Vec2_t Posi;
    void (*Update)(struct RndWalker_t *self);
    void (*Destroy)(struct RndWalker_t *self);
} RndWalker_t;

static float scaleVal(float n,float min,float max,float range)
{
    float scale = range / (max - min);
    float offset = min * scale;
    return (n * scale - offset);
}

static void rw_update(RndWalker_t * walker)
{
    static float tx= 0;
    static float ty = 1000;
    walker->Posi.x = scaleVal(snoise1(tx),-1,1,800);
    walker->Posi.y = scaleVal(snoise1(ty),-1,1,600);
    tx+=0.01;
    ty+=0.02;
}
static void rw_destroy(RndWalker_t * self)
{
    if (self != NULL) {
        free(self);
        self=NULL;
    }
}
RndWalker_t* NewRndWalker(float x,float y)
{
    RndWalker_t * rw = malloc(sizeof(rw));
    if (rw !=NULL) {
        rw->Update = &rw_update;
        rw->Destroy = &rw_destroy;
        rw->Posi.x = x;
        rw->Posi.y = y;
    }
    return rw;
}

#endif // header guard