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#ifndef _shp_anim_h
#define _shp_anim_h 1
#ifdef __cplusplus
extern "C" {
#endif
/*
Structures for animating shapes (not morphing)
I am using standard types to organise the
sequences as an enum would force a complete
recompile each time it changed
*/
typedef struct shapeanimationframe
{
// Public variables
// Private variables
int * vertices;
int * item_normals;
} SHAPEANIMATIONFRAME;
typedef struct shapeanimationsequence
{
// Public variables
int radius;
int max_x;
int max_y;
int max_z;
int min_x;
int min_y;
int min_z;
// Private variables
unsigned long num_frames;
SHAPEANIMATIONFRAME * anim_frames;
// unsigned long num_interpolated_frames_per_frame;
// 0 for none
int * vertex_normals;
} SHAPEANIMATIONSEQUENCE;
typedef struct shapeanimationheader
{
// Public variables
// Private variables
unsigned long num_sequences;
SHAPEANIMATIONSEQUENCE * anim_sequences;
int num_shapes_using_this; //number of shapes sharing the same shapeanimationheader
} SHAPEANIMATIONHEADER;
typedef struct shapeanimationcontroldata
{
// Public variables
// 16.16 fixed point
unsigned long seconds_per_frame;
// default is ONE_FIXED / 8
unsigned long sequence_no;
// default is 0
// if you're not interested in setting a start and an end frame
// then set the flag 'default_start_and_end_frames' below
unsigned long start_frame;
unsigned long end_frame;
// no default values
unsigned long default_start_and_end_frames : 1;
// default is on
unsigned long reversed : 1;
// default is off
unsigned long stop_at_end : 1;
// default is off
// Private variables
unsigned long empty : 1;
unsigned long stop_now : 1;
unsigned long pause_at_end : 1;
// if start_frame == end_frame
// then do not stop unless it has done at least one frame
unsigned long done_a_frame : 1;
SHAPEANIMATIONSEQUENCE * sequence;
signed long current_frame;
signed long time_to_next_frame;
} SHAPEANIMATIONCONTROLDATA;
typedef struct shapeanimationcontroller
{
// Public variables
SHAPEANIMATIONCONTROLDATA current;
SHAPEANIMATIONCONTROLDATA next;
unsigned long finished : 1;
// Private variables
unsigned long playing : 1;
SHAPEANIMATIONHEADER * anim_header;
} SHAPEANIMATIONCONTROLLER;
//////////////////////////////////////////////////////////////////////////////////
///////////////////////////// Funtions /////////////////////////////////
//////////////////////////////////////////////////////////////////////////////////
struct displayblock;
struct shapeheader;
// This sets the current animation (and the next to empty)
unsigned int SetShapeAnimationSequence (struct displayblock *, SHAPEANIMATIONCONTROLDATA *);
unsigned int SetOrphanedShapeAnimationSequence (SHAPEANIMATIONCONTROLLER * sac, SHAPEANIMATIONCONTROLDATA * sacd);
// This sets the next animation (if the current is empty it will set the current)
unsigned int SetNextShapeAnimationSequence (struct displayblock *, SHAPEANIMATIONCONTROLDATA *);
// stop_now == 1 will cause the function to ignore the end_frame value
// set end_frame to -1 for no change to the ending frame of the sequence
void SetCurrentShapeAnimationToStop (struct displayblock *, unsigned long stop_now, signed long end_frame);
SHAPEANIMATIONCONTROLDATA const * GetCurrentShapeAnimationSequenceData (struct displayblock *);
SHAPEANIMATIONCONTROLDATA const * GetNextShapeAnimationSequenceData (struct displayblock *);
// pause_now == 1 will cause the function to ignore the end_frame value
// set end_frame to -1 for no change to the ending frame of the sequence
void PauseCurrentShapeAnimation (struct displayblock *, unsigned long pause_now, signed long end_frame);
void RestartCurrentShapeAnimation (struct displayblock *);
// Please use these functions, whenever you create a block of each type
void InitShapeAnimationController (SHAPEANIMATIONCONTROLLER *, struct shapeheader *);
void InitShapeAnimationControlData (SHAPEANIMATIONCONTROLDATA *);
// These are for the system
void DoAllShapeAnimations ();
void CopyAnimationFrameToShape (SHAPEANIMATIONCONTROLDATA *sacd, struct displayblock * dptr);
#ifdef __cplusplus
};
#endif
#endif
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