/*
Copyright (C) 1996-1997 Id Software, Inc.

This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.

*/

// refresh.h -- public interface to refresh functions

#define	MAXCLIPPLANES	11

#define	TOP_RANGE		16			// soldier uniform colors
#define	BOTTOM_RANGE	96

//=============================================================================

typedef struct efrag_s {
    struct mleaf_s		*leaf;
    struct efrag_s		*leafnext;
    struct entity_s		*entity;
    struct efrag_s		*entnext;
} efrag_t;

// r_light_style - begin
extern cvar_t r_light_vec_x;
extern cvar_t r_light_vec_y;
extern cvar_t r_light_vec_z;
extern cvar_t r_light_style;
// r_light_style - end
extern cvar_t r_interpolation; // model interpolation
extern cvar_t r_particlealpha; // Edited
extern cvar_t r_wateralpha; // translucent water
byte r_foundwater, r_drawwater; // translucent water
byte *alphamap, *additivemap; // transparencies
// begin
#if	id386
byte use_c_renderer;
#endif
// end

typedef struct entity_s {
    qboolean				forcelink;		// model changed

    int						update_type;

    entity_state_t			baseline;		// to fill in defaults in updates

    double					msgtime;		// time of last update
    vec3_t					msg_origins[2];	// last two updates (0 is newest)
    vec3_t					origin;
    vec3_t					msg_angles[2];	// last two updates (0 is newest)
    vec3_t					angles;
    struct model_s			*model;			// NULL = no model
    struct efrag_s			*efrag;			// linked list of efrags
    int						frame;
    float					syncbase;		// for client-side animations
    byte					*colormap;
    int						effects;		// light, particals, etc
    int						skinnum;		// for Alias models
    int						visframe;		// last frame this entity was
    //  found in an active leaf

    int						dlightframe;	// dynamic lighting
    int						dlightbits;

// FIXME: could turn these into a union
    int						trivial_accept;
    struct mnode_s			*topnode;		// for bmodels, first world node
    //  that splits bmodel, or NULL if
    //  not split
    // model interpolation - begin
    struct model_s			*lastmodel;
    qboolean				reset_frame_interpolation; // Edited
    float                   frame_start_time;
    float                   frame_interval; // QC frame_interval
    struct maliasgroup_s	*framegroup1; // Edited
    int                     pose1;
    struct maliasgroup_s	*framegroup2; // renamed
    int                     pose2;
    float                   translate_start_time;
    vec3_t                  origin1;
    vec3_t                  origin2;
    float                   rotate_start_time;
    vec3_t                  angles1;
    vec3_t                  angles2;
    // model interpolation - end
    // Tomaz - QC Alpha Scale Glow Begin
    float		alpha;
    float					scale_start_time;
//	float					scale1;
    float					scale2;
    vec3_t                  scalev;
    float		glow_size;
//	float		glow_red;
//	float		glow_green;
//	float		glow_blue;
    // Tomaz - QC Alpha Scale Glow End
} entity_t;

// !!! if this is changed, it must be changed in asm_draw.h too !!!
typedef struct {
    vrect_t		vrect;				// subwindow in video for refresh
    // FIXME: not need vrect next field here?
    vrect_t		aliasvrect;			// scaled Alias version
    int			vrectright, vrectbottom;	// right & bottom screen coords
    int			aliasvrectright, aliasvrectbottom;	// scaled Alias versions
    float		vrectrightedge;			// rightmost right edge we care about,
    //  for use in edge list
    float		fvrectx, fvrecty;		// for floating-point compares
    float		fvrectx_adj, fvrecty_adj; // left and top edges, for clamping
    int			vrect_x_adj_shift20;	// (vrect.x + 0.5 - epsilon) << 20
    int			vrectright_adj_shift20;	// (vrectright + 0.5 - epsilon) << 20
    float		fvrectright_adj, fvrectbottom_adj;
    // right and bottom edges, for clamping
    float		fvrectright;			// rightmost edge, for Alias clamping
    float		fvrectbottom;			// bottommost edge, for Alias clamping
    float		horizontalFieldOfView;	// at Z = 1.0, this many X is visible
    // 2.0 = 90 degrees
    float		xOrigin;			// should probably allways be 0.5
    float		yOrigin;			// between be around 0.3 to 0.5

    vec3_t		vieworg;
    vec3_t		viewangles;

    float		fov_x, fov_y;

    int			ambientlight;
} refdef_t;


//
// refresh
//
extern	int		reinit_surfcache;


extern	refdef_t	r_refdef;
extern vec3_t	r_origin, vpn, vright, vup;

extern	struct texture_s	*r_notexture_mip;

float fovscale; // FOV-based scaling

void R_Init(void);
void R_InitTextures(void);
void R_InitEfrags(void);
void R_RenderView(void);		// must set r_refdef first
void R_ViewChanged(vrect_t *pvrect, int lineadj, float aspect);
// called whenever r_refdef or vid change
void R_InitSky(struct texture_s *mt);	// called at level load
void R_LoadSky(char *s);  // skyboxes
void LoadPCX(char *filename, byte **pic, int *width, int *height);  // skyboxes

void R_AddEfrags(entity_t *ent);
void R_RemoveEfrags(entity_t *ent);

void R_NewMap(void);


void R_ParseParticleEffect(void);
void R_RunParticleEffect(vec3_t org, vec3_t dir, int color, int count);
void R_RocketTrail(vec3_t start, vec3_t end, int type);

//#ifdef QUAKE2
void R_DarkFieldParticles(entity_t *ent);
//#endif
void R_EntityParticles(entity_t *ent);
void R_BlobExplosion(vec3_t org);
void R_ParticleExplosion(vec3_t org);
void R_ParticleExplosion2(vec3_t org, int colorStart, int colorLength);
void R_LavaSplash(vec3_t org);
void R_TeleportSplash(vec3_t org);

void R_PushDlights(void);


//
// surface cache related
//
extern	int		reinit_surfcache;	// if 1, surface cache is currently empty and
extern qboolean	r_cache_thrash;	// set if thrashing the surface cache

int	D_SurfaceCacheForRes(int width, int height);
void D_FlushCaches(void);
void D_DeleteSurfaceCache(void);
void D_InitCaches(void *buffer, int size);
void R_SetVrect(vrect_t *pvrect, vrect_t *pvrectin, int lineadj);

