97 lines
2.8 KiB
C++
97 lines
2.8 KiB
C++
/*
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* Copyright (c) 2016-2022 Vera Visions LLC.
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
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* IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
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* OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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class decal
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{
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string m_strShader;
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string m_strTexture;
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void(void) decal;
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#ifdef SERVER
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virtual float(entity, float) SendEntity;
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#else
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virtual void(void) ReceiveEntity;
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virtual float() predraw;
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virtual void(void) BuildShader;
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#endif
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virtual void(vector, string) Place;
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};
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typedef struct
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{
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float fraction;
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vector normal;
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vector endpos;
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} traced_t;
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traced_t g_tracedDecal;
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void
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decal_pickwall(entity dself, vector vpos)
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{
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traced_t tmp[6];
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float frac = 1.0f;
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g_tracedDecal.fraction = 1.0f;
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g_tracedDecal.endpos = [0,0,0];
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g_tracedDecal.normal = [0,0,0];
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/* unrolled, trace against walls in all 6 directions */
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makevectors([0, 0, 0]);
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traceline(vpos + (v_forward * -1), vpos + (v_forward * 128), 0, dself);
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tmp[0].fraction = trace_fraction;
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tmp[0].normal = trace_plane_normal;
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tmp[0].endpos = trace_endpos;
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traceline(vpos + (v_forward * 1), vpos + (v_forward * -128), 0, dself);
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tmp[1].fraction = trace_fraction;
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tmp[1].normal = trace_plane_normal;
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tmp[1].endpos = trace_endpos;
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traceline(vpos + (v_right * -1), vpos + (v_right * 128), 0, dself);
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tmp[2].fraction = trace_fraction;
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tmp[2].normal = trace_plane_normal;
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tmp[2].endpos = trace_endpos;
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traceline(vpos + (v_right * 1), vpos + (v_right * -128), 0, dself);
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tmp[3].fraction = trace_fraction;
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tmp[3].normal = trace_plane_normal;
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tmp[3].endpos = trace_endpos;
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traceline(vpos + (v_up * -1), vpos + (v_up * 128), 0, dself);
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tmp[4].fraction = trace_fraction;
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tmp[4].normal = trace_plane_normal;
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tmp[4].endpos = trace_endpos;
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traceline(vpos + (v_up * 1), vpos + (v_up * -128), 0, dself);
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tmp[5].fraction = trace_fraction;
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tmp[5].normal = trace_plane_normal;
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tmp[5].endpos = trace_endpos;
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/* pick whatever wall is closest */
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for (int i = 0; i < 6; i++) {
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if (tmp[i].fraction < frac) {
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frac = tmp[i].fraction;
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g_tracedDecal.fraction = tmp[i].fraction;
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g_tracedDecal.endpos = tmp[i].endpos;
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g_tracedDecal.normal = tmp[i].normal;
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}
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}
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}
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decal Decals_Next(vector pos);
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void Decals_Place(vector pos, string dname);
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#ifdef CLIENT
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string Decal_Precache(string decalTex);
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#endif
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