#ifndef _TRIGGER_H_
#define _TRIGGER_H_

// An enum for type of triggers
enum TriggerTypes { Trigger_Sphere = 0, Trigger_Box,          \
                    Trigger_Cylinder,   Trigger_Triangle };

typedef struct sTrigger {
  long Type;         // Sphere, Box, etc
  long ID;           // Trigger ID
  BOOL Enabled;      // Flag if enabled

  float x1, y1, z1;  // Coord 1
  float x2, y2, z2;  // Coord 2
  float x3, z3;      // Coord 3
  float Radius;      // Radius of bounds
  
  sTrigger *Prev, *Next; // Linked list of triggers

  sTrigger()  { Prev = Next = NULL; }
  ~sTrigger() { delete Next; Next = NULL; }
} sTrigger;

class cTrigger
{
  private:
    long      m_NumTriggers;    //# triggers in linked list
    sTrigger *m_TriggerParent;  // Linked list parent

    long      GetNextLong(FILE *fp);  // Get next long
    float     GetNextFloat(FILE *fp); // Get next float

    // Function that adds a trigger to linked list
    sTrigger *AddTrigger(long Type, long ID, BOOL Enabled);

  public:
    cTrigger();
    ~cTrigger();

    // Functions to load/save a trigger list
    BOOL Load(char *Filename);
    BOOL Save(char *Filename);

    // Functions to add a specific trigger to list
    BOOL AddSphere(long ID, BOOL Enabled,                     \
                   float XPos, float YPos, float ZPos,        \
                   float Radius);

    BOOL AddBox(long ID, BOOL Enabled,                        \
                float XMin, float YMin, float ZMin,           \
                float XMax, float YMax, float ZMax);

    BOOL AddCylinder(long ID, BOOL Enabled,                   \
                     float XPos, float YPos, float ZPos,      \
                     float Radius, float Height);

    BOOL AddTriangle(long ID, BOOL Enabled,                   \
                     float x1, float z1,                      \
                     float x2, float z2,                      \
                     float x3, float z3,                      \
                     float YPos, float Height);

    // Remove a specific trigger by ID
    BOOL Remove(long ID);

    // Free all triggers
    BOOL Free();

    // Find first trigger at location (returns 0 if none)
    long GetTrigger(float XPos, float YPos, float ZPos);

    // Get state of trigger by ID
    BOOL GetEnableState(long ID);

    // Enabled/Disable a trigger by ID
    BOOL Enable(long ID, BOOL Enable);

    // Return the # of triggers and parent of linked list
    long GetNumTriggers();
    sTrigger *GetParentTrigger();
};

#endif