//
// Electric sparks...
//

#ifndef _SPARK_
#define _SPARK_

//
// Removes all sparks.
//

void SPARK_init(void);

//
// Creates a new spark between two points...
//

#define SPARK_TYPE_POINT	1
#define SPARK_TYPE_LIMB		2
#define SPARK_TYPE_GROUND	3
#define SPARK_TYPE_CIRCULAR	4

#define SPARK_FLAG_CLAMP_X		(1 << 0)
#define SPARK_FLAG_CLAMP_Y		(1 << 1)
#define SPARK_FLAG_CLAMP_Z		(1 << 2)
#define SPARK_FLAG_FAST			(1 << 3)
#define SPARK_FLAG_SLOW			(1 << 4)
#define SPARK_FLAG_DART_ABOUT	(1 << 5)
#define SPARK_FLAG_STILL		(SPARK_FLAG_CLAMP_X | SPARK_FLAG_CLAMP_Y | SPARK_FLAG_CLAMP_Z)

typedef struct
{
	UBYTE type;
	UBYTE flag;
	UBYTE padding;

	UBYTE dist;	// For circular types... the distance from the first point.

	UWORD x;	// Point and ground types...
	UWORD y;
	UWORD z;

	THING_INDEX person;	// The limb to use.
	UWORD		limb;
	
} SPARK_Pinfo;

void SPARK_create(
		SPARK_Pinfo *point1,
		SPARK_Pinfo *point2,
		UBYTE        max_life);


//
// Creates a spark somwhere in the given sphere.
//

void SPARK_in_sphere(
		SLONG mid_x,
		SLONG mid_y,
		SLONG mid_z,
		SLONG radius,
		UBYTE max_life,
		UBYTE max_create);


//
// Makes sparks appear on all the electric fences.
//

void SPARK_show_electric_fences(void);


//
// Process the sparks.
//

void SPARK_process(void);


//
// Draw the sparks...
//

#define SPARK_MAX_POINTS 5

typedef struct
{
	SLONG num_points;
	ULONG colour;
	SLONG size;

	SLONG x[SPARK_MAX_POINTS];
	SLONG y[SPARK_MAX_POINTS];
	SLONG z[SPARK_MAX_POINTS];

} SPARK_Info;

void        SPARK_get_start(UBYTE xmin, UBYTE xmax, UBYTE z);
SPARK_Info *SPARK_get_next (void);	// NULL => No more sparks...



#endif