goom_tools.h

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#ifndef _GOOMTOOLS_H
#define _GOOMTOOLS_H

#define GOOM_NB_RAND 0x10000

typedef struct _GOOM_RANDOM {
        int array[GOOM_NB_RAND];
        unsigned short pos;
} GoomRandom;

GoomRandom *goom_random_init(int i);
void goom_random_free(GoomRandom *grandom);

inline static int goom_random(GoomRandom *grandom) {
        
        grandom->pos++; /* works because pos is an unsigned short */
        return grandom->array[grandom->pos];
}

inline static int goom_irand(GoomRandom *grandom, int i) {

        grandom->pos++;
        return grandom->array[grandom->pos] % i;
}

/* called to change the specified number of value in the array, so that the array does not remain the same*/
void goom_random_update_array(GoomRandom *grandom, int numberOfValuesToChange);

#endif