spfx.h

/*
 * See Licensing and Copyright notice in naev.h
 */
#pragma once
 
#include "ntime.h"
#include "opengl.h"
#include "physics.h"
 
#define SPFX_LAYER_FRONT   0 
#define SPFX_LAYER_MIDDLE  1 
#define SPFX_LAYER_BACK    2 
#define SPFX_DAMAGE_DECAY  0.5 
#define SPFX_DAMAGE_MOD    1.5 
#define SPFX_DAMAGE_MAX    1.0 
#define SPFX_SHAKE_DECAY   0.3 
#define SPFX_SHAKE_MOD     1.0 
#define SPFX_SHAKE_MAX     1.0 
typedef struct TrailStyle_ {
   glColour col; 
   float thick;  
} TrailStyle;
 
typedef enum TrailMode_ {
   MODE_IDLE, MODE_GLOW, MODE_AFTERBURN, MODE_JUMPING, MODE_NONE,
   MODE_MAX
} TrailMode;
 
#define MODE_TAGS {"idle", "glow", "afterburn", "jumping", "none",}
 
typedef struct TrailSpec_ {
   char* name;       
   char *filename;   
   double ttl;       
   float def_thick;  
   GLuint type;      
   TrailStyle style[MODE_MAX]; 
   int nebula;       
} TrailSpec;
 
typedef struct TrailPoint {
   GLfloat x, y;     
   GLfloat t;        
   TrailMode mode;   
} TrailPoint;
 
typedef struct Trail_spfx_ {
   const TrailSpec *spec;
   TrailPoint *point_ringbuf; 
   size_t capacity;  
   size_t iread;     
   size_t iwrite;    
   int refcount;     
   double dt;        
   GLfloat r;        
   unsigned int ontop; 
} Trail_spfx;
 
#define trail_at( trail, i ) ( (trail)->point_ringbuf[ (i) & ((trail)->capacity - 1) ] )
#define trail_size( trail ) ( (trail)->iwrite - (trail)->iread )
#define trail_front( trail ) trail_at( trail, (trail)->iread )
#define trail_back( trail ) trail_at( trail, (trail)->iwrite-1 )
 
/*
 * stack manipulation
 */
int spfx_get( const char *name );
const TrailSpec* trailSpec_get( const char* name );
void spfx_add( int effect,
      const double px, const double py,
      const double vx, const double vy,
      int layer );
 
/*
 * stack mass manipulation functions
 */
void spfx_update( const double dt, const double real_dt );
void spfx_render( int layer, double dt );
void spfx_clear (void);
Trail_spfx* spfx_trail_create( const TrailSpec* spec );
void spfx_trail_sample( Trail_spfx* trail, double x, double y, TrailMode mode, int force );
void spfx_trail_remove( Trail_spfx* trail );
void spfx_trail_draw( const Trail_spfx* trail );
 
/*
 * Misc effects.
 */
void spfx_shake( double mod );
void spfx_damage( double mod );
 
/*
 * other effects
 */
void spfx_cinematic (void);
 
/*
 * spfx effect loading and freeing
 */
int spfx_load (void);
void spfx_free (void);