120 lines
3.5 KiB
C
120 lines
3.5 KiB
C
/* Copyright (C) 1996-1997 Id Software, Inc.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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See file, 'COPYING', for details.
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*/
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#ifndef __LIGHT_LIGHT_H__
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#define __LIGHT_LIGHT_H__
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#include <common/cmdlib.h>
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#include <common/mathlib.h>
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#include <common/bspfile.h>
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#include <common/log.h>
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#include <common/threads.h>
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#include <light/litfile.h>
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#define ON_EPSILON 0.1
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#define ANGLE_EPSILON 0.001
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#define MAXLIGHTS 1024
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#define TRACE_HIT_NONE 0
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#define TRACE_HIT_SOLID (1 << 0)
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#define TRACE_HIT_WATER (1 << 1)
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#define TRACE_HIT_SLIME (1 << 2)
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#define TRACE_HIT_LAVA (1 << 3)
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#define TRACE_HIT_SKY (1 << 4)
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typedef struct {
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const dplane_t *dplane;
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int side;
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vec3_t point;
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} tracepoint_t;
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/*
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* ---------
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* TraceLine
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* ---------
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* Generic BSP model ray tracing function. Traces a ray from start towards
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* stop. If the trace line hits one of the flagged contents along the way, the
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* corresponding TRACE flag will be returned. Furthermore, if hitpoint is
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* non-null, information about the point the ray hit will be filled in.
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*
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* model - The bsp model to trace against
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* flags - contents which will stop the trace (must be > 0)
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* start - coordinates to start trace
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* stop - coordinates to end the trace
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* hitpoint - filled in if result > 0 and hitpoint is non-NULL
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*
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* TraceLine will return a negative traceflag if the point 'start' resides
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* inside a leaf with one of the contents types which stop the trace.
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*/
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int TraceLine(const dmodel_t *model, const int traceflags,
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const vec3_t start, const vec3_t end, tracepoint_t *hitpoint);
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/*
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* Convenience functions TestLight and TestSky will test against all shadow
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* casting bmodels and self-shadow the model 'self' if self != NULL. Returns
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* true if sky or light is visible, respectively.
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*/
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qboolean TestSky(const vec3_t start, const vec3_t dirn, const dmodel_t *self);
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qboolean TestLight(const vec3_t start, const vec3_t stop, const dmodel_t *self);
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typedef struct {
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vec_t light;
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vec3_t color;
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} lightsample_t;
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typedef struct {
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const dmodel_t *model;
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qboolean shadowself;
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lightsample_t minlight;
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vec3_t offset;
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} modelinfo_t;
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/* tracelist is a null terminated array of BSP models to use for LOS tests */
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extern const dmodel_t *const *tracelist;
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void LightFace(dface_t *face, const modelinfo_t *modelinfo);
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void MakeTnodes(void);
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extern float scaledist;
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extern float rangescale;
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extern float fadegate;
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extern int softsamples;
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extern const vec3_t vec3_white;
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extern lightsample_t minlight;
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extern lightsample_t sunlight;
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extern vec3_t sunvec;
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/*
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* Return space for the lightmap and colourmap at the same time so it can
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* be done in a thread-safe manner.
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*/
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void GetFileSpace(byte **lightdata, byte **colordata, int size);
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extern byte *filebase;
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extern byte *lit_filebase;
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extern int oversample;
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extern qboolean colored;
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extern qboolean litfile;
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#endif /* __LIGHT_LIGHT_H__ */
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