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      1 /*
      2 Copyright (C) 1996-1997 Id Software, Inc.
      3 
      4 This program is free software; you can redistribute it and/or
      5 modify it under the terms of the GNU General Public License
      6 as published by the Free Software Foundation; either version 2
      7 of the License, or (at your option) any later version.
      8 
      9 This program is distributed in the hope that it will be useful,
     10 but WITHOUT ANY WARRANTY; without even the implied warranty of
     11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
     12 
     13 See the GNU General Public License for more details.
     14 
     15 You should have received a copy of the GNU General Public License
     16 along with this program; if not, write to the Free Software
     17 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
     18 
     19 */
     20 
     21 // refresh.h -- public interface to refresh functions
     22 
     23 #define	MAXCLIPPLANES	11
     24 
     25 #define	TOP_RANGE		16			// soldier uniform colors
     26 #define	BOTTOM_RANGE	96
     27 
     28 //=============================================================================
     29 
     30 typedef struct efrag_s
     31 {
     32 	struct mleaf_s		*leaf;
     33 	struct efrag_s		*leafnext;
     34 	struct entity_s		*entity;
     35 	struct efrag_s		*entnext;
     36 } efrag_t;
     37 
     38 
     39 typedef struct entity_s
     40 {
     41 	qboolean				forcelink;		// model changed
     42 
     43 	int						update_type;
     44 
     45 	entity_state_t			baseline;		// to fill in defaults in updates
     46 
     47 	double					msgtime;		// time of last update
     48 	vec3_t					msg_origins[2];	// last two updates (0 is newest)
     49 	vec3_t					origin;
     50 	vec3_t					msg_angles[2];	// last two updates (0 is newest)
     51 	vec3_t					angles;
     52 	struct model_s			*model;			// NULL = no model
     53 	struct efrag_s			*efrag;			// linked list of efrags
     54 	int						frame;
     55 	float					syncbase;		// for client-side animations
     56 	byte					*colormap;
     57 	int						effects;		// light, particals, etc
     58 	int						skinnum;		// for Alias models
     59 	int						visframe;		// last frame this entity was
     60 											//  found in an active leaf
     61 
     62 	int						dlightframe;	// dynamic lighting
     63 	int						dlightbits;
     64 
     65 // FIXME: could turn these into a union
     66 	int						trivial_accept;
     67 	struct mnode_s			*topnode;		// for bmodels, first world node
     68 											//  that splits bmodel, or NULL if
     69 											//  not split
     70 } entity_t;
     71 
     72 // !!! if this is changed, it must be changed in asm_draw.h too !!!
     73 typedef struct
     74 {
     75 	vrect_t		vrect;				// subwindow in video for refresh
     76 									// FIXME: not need vrect next field here?
     77 	vrect_t		aliasvrect;			// scaled Alias version
     78 	int			vrectright, vrectbottom;	// right & bottom screen coords
     79 	int			aliasvrectright, aliasvrectbottom;	// scaled Alias versions
     80 	float		vrectrightedge;			// rightmost right edge we care about,
     81 										//  for use in edge list
     82 	float		fvrectx, fvrecty;		// for floating-point compares
     83 	float		fvrectx_adj, fvrecty_adj; // left and top edges, for clamping
     84 	int			vrect_x_adj_shift20;	// (vrect.x + 0.5 - epsilon) << 20
     85 	int			vrectright_adj_shift20;	// (vrectright + 0.5 - epsilon) << 20
     86 	float		fvrectright_adj, fvrectbottom_adj;
     87 										// right and bottom edges, for clamping
     88 	float		fvrectright;			// rightmost edge, for Alias clamping
     89 	float		fvrectbottom;			// bottommost edge, for Alias clamping
     90 	float		horizontalFieldOfView;	// at Z = 1.0, this many X is visible
     91 										// 2.0 = 90 degrees
     92 	float		xOrigin;			// should probably allways be 0.5
     93 	float		yOrigin;			// between be around 0.3 to 0.5
     94 
     95 	vec3_t		vieworg;
     96 	vec3_t		viewangles;
     97 
     98 	float		fov_x, fov_y;
     99 
    100 	int			ambientlight;
    101 } refdef_t;
    102 
    103 
    104 //
    105 // refresh
    106 //
    107 extern	int		reinit_surfcache;
    108 
    109 
    110 extern	refdef_t	r_refdef;
    111 extern vec3_t	r_origin, vpn, vright, vup;
    112 
    113 extern	struct texture_s	*r_notexture_mip;
    114 
    115 
    116 void R_Init (void);
    117 void R_InitTextures (void);
    118 void R_InitEfrags (void);
    119 void R_RenderView (void);		// must set r_refdef first
    120 void R_ViewChanged (vrect_t *pvrect, int lineadj, float aspect);
    121 								// called whenever r_refdef or vid change
    122 void R_InitSky (struct texture_s *mt);	// called at level load
    123 
    124 void R_AddEfrags (entity_t *ent);
    125 void R_RemoveEfrags (entity_t *ent);
    126 
    127 void R_NewMap (void);
    128 
    129 
    130 void R_ParseParticleEffect (void);
    131 void R_RunParticleEffect (vec3_t org, vec3_t dir, int color, int count);
    132 void R_RocketTrail (vec3_t start, vec3_t end, int type);
    133 
    134 #ifdef QUAKE2
    135 void R_DarkFieldParticles (entity_t *ent);
    136 #endif
    137 void R_EntityParticles (entity_t *ent);
    138 void R_BlobExplosion (vec3_t org);
    139 void R_ParticleExplosion (vec3_t org);
    140 void R_ParticleExplosion2 (vec3_t org, int colorStart, int colorLength);
    141 void R_LavaSplash (vec3_t org);
    142 void R_TeleportSplash (vec3_t org);
    143 
    144 void R_PushDlights (void);
    145 
    146 
    147 //
    148 // surface cache related
    149 //
    150 extern	int		reinit_surfcache;	// if 1, surface cache is currently empty and
    151 extern qboolean	r_cache_thrash;	// set if thrashing the surface cache
    152 
    153 int	D_SurfaceCacheForRes (int width, int height);
    154 void D_FlushCaches (void);
    155 void D_DeleteSurfaceCache (void);
    156 void D_InitCaches (void *buffer, int size);
    157 void R_SetVrect (vrect_t *pvrect, vrect_t *pvrectin, int lineadj);
    158 
    159