wind.h

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#ifndef WIND_H
#define WIND_H

#include <stdio.h>
#include <math.h>
#include <stdlib.h>

typedef enum { 
  LONELY = 0,
  EMPTY, 
  INITIAL,
  READY } _tstage;

typedef enum {
  NORTH = 0,
  NORTHWEST,
  WEST,
  SOUTHWEST,
  SOUTH,
  SOUTHEAST,
  EAST,
  NORTHEAST,
} _tdirections;

#define NET_WIDTH 8
#define NET_HEIGHT 5
#define WIND_CONE_DELTA 5.0f
#define MAX_NEIGHBOURS 4
#define MAX_WIND_SPEED 20

class SNode;
class SNode {
  public:
    SNode(unsigned char xx, unsigned char yy);
    char* get_stage() { return &stage;}
    void set_empty() { stage = EMPTY; }
    float* get_wind_speed() { return &speed;}
    float* get_wind_heading() { return &heading;}
    void  set_neighbour(char dir, SNode* other);
    void update_forbidden();
    void gen_random();
  protected:
    unsigned char x;
    unsigned char y;
    SNode* north;
    SNode* south;
    SNode* west;
    SNode* east;
    SNode* northwest;
    SNode* southwest;
    SNode* northeast;
    SNode* southeast;
    float forbidden_headings[MAX_NEIGHBOURS];
    signed char last_h;
    float speed;
    float heading;
    char stage;
    bool is_forbidden(float angle);
};

class SNet {
  public:
    SNet();
    ~SNet();
    float* get_wind(float x, float y);
  private:
    void clg();
    void chg();
    void initial_rn();
    SNode* sectors[NET_WIDTH][NET_HEIGHT];
};

class FNode : SNode {
  public:
    FNode(unsigned char xx, unsigned char yy);
};

#endif

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