mirror of
https://github.com/blendogames/thirtyflightsofloving.git
synced 2024-11-15 00:41:21 +00:00
1452 lines
25 KiB
C
1452 lines
25 KiB
C
#include "q_shared.h"
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#define DEG2RAD( a ) ( a * M_PI ) / 180.0F
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vec3_t vec3_origin = {0,0,0};
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//============================================================================
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#ifdef _WIN32
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#pragma optimize( "", off )
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#endif
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void RotatePointAroundVector( vec3_t dst, const vec3_t dir, const vec3_t point, float degrees )
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{
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float m[3][3];
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float im[3][3];
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float zrot[3][3];
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float tmpmat[3][3];
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float rot[3][3];
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int i;
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vec3_t vr, vup, vf;
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vf[0] = dir[0];
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vf[1] = dir[1];
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vf[2] = dir[2];
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PerpendicularVector( vr, dir );
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CrossProduct( vr, vf, vup );
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m[0][0] = vr[0];
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m[1][0] = vr[1];
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m[2][0] = vr[2];
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m[0][1] = vup[0];
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m[1][1] = vup[1];
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m[2][1] = vup[2];
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m[0][2] = vf[0];
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m[1][2] = vf[1];
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m[2][2] = vf[2];
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memcpy( im, m, sizeof( im ) );
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im[0][1] = m[1][0];
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im[0][2] = m[2][0];
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im[1][0] = m[0][1];
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im[1][2] = m[2][1];
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im[2][0] = m[0][2];
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im[2][1] = m[1][2];
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memset( zrot, 0, sizeof( zrot ) );
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zrot[0][0] = zrot[1][1] = zrot[2][2] = 1.0F;
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zrot[0][0] = cos( DEG2RAD( degrees ) );
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zrot[0][1] = sin( DEG2RAD( degrees ) );
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zrot[1][0] = -sin( DEG2RAD( degrees ) );
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zrot[1][1] = cos( DEG2RAD( degrees ) );
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R_ConcatRotations( m, zrot, tmpmat );
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R_ConcatRotations( tmpmat, im, rot );
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for ( i = 0; i < 3; i++ )
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{
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dst[i] = rot[i][0] * point[0] + rot[i][1] * point[1] + rot[i][2] * point[2];
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}
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}
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#ifdef _WIN32
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#pragma optimize( "", on )
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#endif
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void AngleVectors (vec3_t angles, vec3_t forward, vec3_t right, vec3_t up)
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{
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float angle;
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static float sr, sp, sy, cr, cp, cy;
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// static to help MS compiler fp bugs
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angle = angles[YAW] * (M_PI*2 / 360);
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sy = sin(angle);
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cy = cos(angle);
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angle = angles[PITCH] * (M_PI*2 / 360);
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sp = sin(angle);
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cp = cos(angle);
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angle = angles[ROLL] * (M_PI*2 / 360);
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sr = sin(angle);
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cr = cos(angle);
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if (forward)
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{
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forward[0] = cp*cy;
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forward[1] = cp*sy;
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forward[2] = -sp;
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}
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if (right)
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{
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right[0] = (-1*sr*sp*cy+-1*cr*-sy);
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right[1] = (-1*sr*sp*sy+-1*cr*cy);
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right[2] = -1*sr*cp;
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}
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if (up)
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{
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up[0] = (cr*sp*cy+-sr*-sy);
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up[1] = (cr*sp*sy+-sr*cy);
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up[2] = cr*cp;
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}
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}
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void ProjectPointOnPlane( vec3_t dst, const vec3_t p, const vec3_t normal )
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{
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float d;
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vec3_t n;
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float inv_denom;
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inv_denom = 1.0F / DotProduct( normal, normal );
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d = DotProduct( normal, p ) * inv_denom;
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n[0] = normal[0] * inv_denom;
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n[1] = normal[1] * inv_denom;
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n[2] = normal[2] * inv_denom;
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dst[0] = p[0] - d * n[0];
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dst[1] = p[1] - d * n[1];
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dst[2] = p[2] - d * n[2];
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}
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/*
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** assumes "src" is normalized
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*/
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void PerpendicularVector( vec3_t dst, const vec3_t src )
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{
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int pos;
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int i;
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float minelem = 1.0F;
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vec3_t tempvec;
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/*
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** find the smallest magnitude axially aligned vector
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*/
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for ( pos = 0, i = 0; i < 3; i++ )
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{
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if ( fabs( src[i] ) < minelem )
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{
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pos = i;
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minelem = fabs( src[i] );
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}
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}
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tempvec[0] = tempvec[1] = tempvec[2] = 0.0F;
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tempvec[pos] = 1.0F;
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/*
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** project the point onto the plane defined by src
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*/
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ProjectPointOnPlane( dst, tempvec, src );
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/*
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** normalize the result
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*/
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VectorNormalize( dst );
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}
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/*
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================
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R_ConcatRotations
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================
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*/
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void R_ConcatRotations (float in1[3][3], float in2[3][3], float out[3][3])
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{
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out[0][0] = in1[0][0] * in2[0][0] + in1[0][1] * in2[1][0] +
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in1[0][2] * in2[2][0];
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out[0][1] = in1[0][0] * in2[0][1] + in1[0][1] * in2[1][1] +
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in1[0][2] * in2[2][1];
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out[0][2] = in1[0][0] * in2[0][2] + in1[0][1] * in2[1][2] +
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in1[0][2] * in2[2][2];
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out[1][0] = in1[1][0] * in2[0][0] + in1[1][1] * in2[1][0] +
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in1[1][2] * in2[2][0];
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out[1][1] = in1[1][0] * in2[0][1] + in1[1][1] * in2[1][1] +
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in1[1][2] * in2[2][1];
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out[1][2] = in1[1][0] * in2[0][2] + in1[1][1] * in2[1][2] +
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in1[1][2] * in2[2][2];
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out[2][0] = in1[2][0] * in2[0][0] + in1[2][1] * in2[1][0] +
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in1[2][2] * in2[2][0];
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out[2][1] = in1[2][0] * in2[0][1] + in1[2][1] * in2[1][1] +
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in1[2][2] * in2[2][1];
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out[2][2] = in1[2][0] * in2[0][2] + in1[2][1] * in2[1][2] +
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in1[2][2] * in2[2][2];
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}
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/*
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================
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R_ConcatTransforms
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================
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*/
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void R_ConcatTransforms (float in1[3][4], float in2[3][4], float out[3][4])
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{
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out[0][0] = in1[0][0] * in2[0][0] + in1[0][1] * in2[1][0] +
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in1[0][2] * in2[2][0];
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out[0][1] = in1[0][0] * in2[0][1] + in1[0][1] * in2[1][1] +
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in1[0][2] * in2[2][1];
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out[0][2] = in1[0][0] * in2[0][2] + in1[0][1] * in2[1][2] +
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in1[0][2] * in2[2][2];
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out[0][3] = in1[0][0] * in2[0][3] + in1[0][1] * in2[1][3] +
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in1[0][2] * in2[2][3] + in1[0][3];
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out[1][0] = in1[1][0] * in2[0][0] + in1[1][1] * in2[1][0] +
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in1[1][2] * in2[2][0];
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out[1][1] = in1[1][0] * in2[0][1] + in1[1][1] * in2[1][1] +
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in1[1][2] * in2[2][1];
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out[1][2] = in1[1][0] * in2[0][2] + in1[1][1] * in2[1][2] +
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in1[1][2] * in2[2][2];
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out[1][3] = in1[1][0] * in2[0][3] + in1[1][1] * in2[1][3] +
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in1[1][2] * in2[2][3] + in1[1][3];
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out[2][0] = in1[2][0] * in2[0][0] + in1[2][1] * in2[1][0] +
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in1[2][2] * in2[2][0];
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out[2][1] = in1[2][0] * in2[0][1] + in1[2][1] * in2[1][1] +
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in1[2][2] * in2[2][1];
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out[2][2] = in1[2][0] * in2[0][2] + in1[2][1] * in2[1][2] +
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in1[2][2] * in2[2][2];
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out[2][3] = in1[2][0] * in2[0][3] + in1[2][1] * in2[1][3] +
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in1[2][2] * in2[2][3] + in1[2][3];
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}
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//============================================================================
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float Q_fabs (float f)
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{
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#if 0
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if (f >= 0)
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return f;
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return -f;
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#else
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int tmp = * ( int * ) &f;
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tmp &= 0x7FFFFFFF;
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return * ( float * ) &tmp;
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#endif
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}
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#if defined _M_IX86 && !defined C_ONLY
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#pragma warning (disable:4035)
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__declspec( naked ) long Q_ftol( float f )
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{
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static int tmp;
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__asm fld dword ptr [esp+4]
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__asm fistp tmp
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__asm mov eax, tmp
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__asm ret
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}
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#pragma warning (default:4035)
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#endif
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/*
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===============
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LerpAngle
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===============
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*/
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float LerpAngle (float a2, float a1, float frac)
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{
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if (a1 - a2 > 180)
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a1 -= 360;
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if (a1 - a2 < -180)
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a1 += 360;
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return a2 + frac * (a1 - a2);
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}
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float anglemod(float a)
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{
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#if 0
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if (a >= 0)
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a -= 360*(int)(a/360);
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else
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a += 360*( 1 + (int)(-a/360) );
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#endif
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a = (360.0/65536) * ((int)(a*(65536/360.0)) & 65535);
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return a;
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}
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int i;
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vec3_t corners[2];
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// this is the slow, general version
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int BoxOnPlaneSide2 (vec3_t emins, vec3_t emaxs, struct cplane_s *p)
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{
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int i;
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float dist1, dist2;
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int sides;
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vec3_t corners[2];
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for (i=0 ; i<3 ; i++)
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{
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if (p->normal[i] < 0)
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{
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corners[0][i] = emins[i];
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corners[1][i] = emaxs[i];
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}
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else
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{
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corners[1][i] = emins[i];
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corners[0][i] = emaxs[i];
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}
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}
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dist1 = DotProduct (p->normal, corners[0]) - p->dist;
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dist2 = DotProduct (p->normal, corners[1]) - p->dist;
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sides = 0;
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if (dist1 >= 0)
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sides = 1;
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if (dist2 < 0)
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sides |= 2;
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return sides;
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}
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/*
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==================
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BoxOnPlaneSide
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Returns 1, 2, or 1 + 2
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==================
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*/
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//#if !id386
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//#ifndef id386
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//#ifndef _WIN32
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#if !defined (_WIN32) || !defined (_M_IX86)
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int BoxOnPlaneSide (vec3_t emins, vec3_t emaxs, struct cplane_s *p)
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{
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float dist1, dist2;
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int sides;
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// fast axial cases
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if (p->type < 3)
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{
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if (p->dist <= emins[p->type])
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return 1;
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if (p->dist >= emaxs[p->type])
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return 2;
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return 3;
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}
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// general case
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switch (p->signbits)
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{
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case 0:
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dist1 = p->normal[0]*emaxs[0] + p->normal[1]*emaxs[1] + p->normal[2]*emaxs[2];
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dist2 = p->normal[0]*emins[0] + p->normal[1]*emins[1] + p->normal[2]*emins[2];
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break;
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case 1:
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dist1 = p->normal[0]*emins[0] + p->normal[1]*emaxs[1] + p->normal[2]*emaxs[2];
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dist2 = p->normal[0]*emaxs[0] + p->normal[1]*emins[1] + p->normal[2]*emins[2];
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break;
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case 2:
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dist1 = p->normal[0]*emaxs[0] + p->normal[1]*emins[1] + p->normal[2]*emaxs[2];
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dist2 = p->normal[0]*emins[0] + p->normal[1]*emaxs[1] + p->normal[2]*emins[2];
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break;
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case 3:
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dist1 = p->normal[0]*emins[0] + p->normal[1]*emins[1] + p->normal[2]*emaxs[2];
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dist2 = p->normal[0]*emaxs[0] + p->normal[1]*emaxs[1] + p->normal[2]*emins[2];
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break;
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case 4:
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dist1 = p->normal[0]*emaxs[0] + p->normal[1]*emaxs[1] + p->normal[2]*emins[2];
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dist2 = p->normal[0]*emins[0] + p->normal[1]*emins[1] + p->normal[2]*emaxs[2];
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break;
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case 5:
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dist1 = p->normal[0]*emins[0] + p->normal[1]*emaxs[1] + p->normal[2]*emins[2];
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dist2 = p->normal[0]*emaxs[0] + p->normal[1]*emins[1] + p->normal[2]*emaxs[2];
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break;
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case 6:
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dist1 = p->normal[0]*emaxs[0] + p->normal[1]*emins[1] + p->normal[2]*emins[2];
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dist2 = p->normal[0]*emins[0] + p->normal[1]*emaxs[1] + p->normal[2]*emaxs[2];
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break;
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case 7:
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dist1 = p->normal[0]*emins[0] + p->normal[1]*emins[1] + p->normal[2]*emins[2];
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dist2 = p->normal[0]*emaxs[0] + p->normal[1]*emaxs[1] + p->normal[2]*emaxs[2];
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break;
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default:
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dist1 = dist2 = 0; // shut up compiler
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assert( 0 );
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break;
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}
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sides = 0;
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if (dist1 >= p->dist)
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sides = 1;
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if (dist2 < p->dist)
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sides |= 2;
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assert( sides != 0 );
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return sides;
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}
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#else
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#pragma warning( disable: 4035 )
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__declspec( naked ) int BoxOnPlaneSide (vec3_t emins, vec3_t emaxs, struct cplane_s *p)
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{
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static int bops_initialized;
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static int Ljmptab[8];
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__asm {
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push ebx
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cmp bops_initialized, 1
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je initialized
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mov bops_initialized, 1
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mov Ljmptab[0*4], offset Lcase0
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mov Ljmptab[1*4], offset Lcase1
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mov Ljmptab[2*4], offset Lcase2
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mov Ljmptab[3*4], offset Lcase3
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mov Ljmptab[4*4], offset Lcase4
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mov Ljmptab[5*4], offset Lcase5
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mov Ljmptab[6*4], offset Lcase6
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mov Ljmptab[7*4], offset Lcase7
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initialized:
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mov edx,ds:dword ptr[4+12+esp]
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mov ecx,ds:dword ptr[4+4+esp]
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xor eax,eax
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mov ebx,ds:dword ptr[4+8+esp]
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mov al,ds:byte ptr[17+edx]
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cmp al,8
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jge Lerror
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fld ds:dword ptr[0+edx]
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fld st(0)
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jmp dword ptr[Ljmptab+eax*4]
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Lcase0:
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fmul ds:dword ptr[ebx]
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fld ds:dword ptr[0+4+edx]
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fxch st(2)
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fmul ds:dword ptr[ecx]
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fxch st(2)
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fld st(0)
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fmul ds:dword ptr[4+ebx]
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fld ds:dword ptr[0+8+edx]
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fxch st(2)
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fmul ds:dword ptr[4+ecx]
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fxch st(2)
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fld st(0)
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fmul ds:dword ptr[8+ebx]
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fxch st(5)
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faddp st(3),st(0)
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fmul ds:dword ptr[8+ecx]
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fxch st(1)
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faddp st(3),st(0)
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fxch st(3)
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faddp st(2),st(0)
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jmp LSetSides
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Lcase1:
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fmul ds:dword ptr[ecx]
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fld ds:dword ptr[0+4+edx]
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fxch st(2)
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fmul ds:dword ptr[ebx]
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fxch st(2)
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fld st(0)
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fmul ds:dword ptr[4+ebx]
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fld ds:dword ptr[0+8+edx]
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fxch st(2)
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|
fmul ds:dword ptr[4+ecx]
|
|
fxch st(2)
|
|
fld st(0)
|
|
fmul ds:dword ptr[8+ebx]
|
|
fxch st(5)
|
|
faddp st(3),st(0)
|
|
fmul ds:dword ptr[8+ecx]
|
|
fxch st(1)
|
|
faddp st(3),st(0)
|
|
fxch st(3)
|
|
faddp st(2),st(0)
|
|
jmp LSetSides
|
|
Lcase2:
|
|
fmul ds:dword ptr[ebx]
|
|
fld ds:dword ptr[0+4+edx]
|
|
fxch st(2)
|
|
fmul ds:dword ptr[ecx]
|
|
fxch st(2)
|
|
fld st(0)
|
|
fmul ds:dword ptr[4+ecx]
|
|
fld ds:dword ptr[0+8+edx]
|
|
fxch st(2)
|
|
fmul ds:dword ptr[4+ebx]
|
|
fxch st(2)
|
|
fld st(0)
|
|
fmul ds:dword ptr[8+ebx]
|
|
fxch st(5)
|
|
faddp st(3),st(0)
|
|
fmul ds:dword ptr[8+ecx]
|
|
fxch st(1)
|
|
faddp st(3),st(0)
|
|
fxch st(3)
|
|
faddp st(2),st(0)
|
|
jmp LSetSides
|
|
Lcase3:
|
|
fmul ds:dword ptr[ecx]
|
|
fld ds:dword ptr[0+4+edx]
|
|
fxch st(2)
|
|
fmul ds:dword ptr[ebx]
|
|
fxch st(2)
|
|
fld st(0)
|
|
fmul ds:dword ptr[4+ecx]
|
|
fld ds:dword ptr[0+8+edx]
|
|
fxch st(2)
|
|
fmul ds:dword ptr[4+ebx]
|
|
fxch st(2)
|
|
fld st(0)
|
|
fmul ds:dword ptr[8+ebx]
|
|
fxch st(5)
|
|
faddp st(3),st(0)
|
|
fmul ds:dword ptr[8+ecx]
|
|
fxch st(1)
|
|
faddp st(3),st(0)
|
|
fxch st(3)
|
|
faddp st(2),st(0)
|
|
jmp LSetSides
|
|
Lcase4:
|
|
fmul ds:dword ptr[ebx]
|
|
fld ds:dword ptr[0+4+edx]
|
|
fxch st(2)
|
|
fmul ds:dword ptr[ecx]
|
|
fxch st(2)
|
|
fld st(0)
|
|
fmul ds:dword ptr[4+ebx]
|
|
fld ds:dword ptr[0+8+edx]
|
|
fxch st(2)
|
|
fmul ds:dword ptr[4+ecx]
|
|
fxch st(2)
|
|
fld st(0)
|
|
fmul ds:dword ptr[8+ecx]
|
|
fxch st(5)
|
|
faddp st(3),st(0)
|
|
fmul ds:dword ptr[8+ebx]
|
|
fxch st(1)
|
|
faddp st(3),st(0)
|
|
fxch st(3)
|
|
faddp st(2),st(0)
|
|
jmp LSetSides
|
|
Lcase5:
|
|
fmul ds:dword ptr[ecx]
|
|
fld ds:dword ptr[0+4+edx]
|
|
fxch st(2)
|
|
fmul ds:dword ptr[ebx]
|
|
fxch st(2)
|
|
fld st(0)
|
|
fmul ds:dword ptr[4+ebx]
|
|
fld ds:dword ptr[0+8+edx]
|
|
fxch st(2)
|
|
fmul ds:dword ptr[4+ecx]
|
|
fxch st(2)
|
|
fld st(0)
|
|
fmul ds:dword ptr[8+ecx]
|
|
fxch st(5)
|
|
faddp st(3),st(0)
|
|
fmul ds:dword ptr[8+ebx]
|
|
fxch st(1)
|
|
faddp st(3),st(0)
|
|
fxch st(3)
|
|
faddp st(2),st(0)
|
|
jmp LSetSides
|
|
Lcase6:
|
|
fmul ds:dword ptr[ebx]
|
|
fld ds:dword ptr[0+4+edx]
|
|
fxch st(2)
|
|
fmul ds:dword ptr[ecx]
|
|
fxch st(2)
|
|
fld st(0)
|
|
fmul ds:dword ptr[4+ecx]
|
|
fld ds:dword ptr[0+8+edx]
|
|
fxch st(2)
|
|
fmul ds:dword ptr[4+ebx]
|
|
fxch st(2)
|
|
fld st(0)
|
|
fmul ds:dword ptr[8+ecx]
|
|
fxch st(5)
|
|
faddp st(3),st(0)
|
|
fmul ds:dword ptr[8+ebx]
|
|
fxch st(1)
|
|
faddp st(3),st(0)
|
|
fxch st(3)
|
|
faddp st(2),st(0)
|
|
jmp LSetSides
|
|
Lcase7:
|
|
fmul ds:dword ptr[ecx]
|
|
fld ds:dword ptr[0+4+edx]
|
|
fxch st(2)
|
|
fmul ds:dword ptr[ebx]
|
|
fxch st(2)
|
|
fld st(0)
|
|
fmul ds:dword ptr[4+ecx]
|
|
fld ds:dword ptr[0+8+edx]
|
|
fxch st(2)
|
|
fmul ds:dword ptr[4+ebx]
|
|
fxch st(2)
|
|
fld st(0)
|
|
fmul ds:dword ptr[8+ecx]
|
|
fxch st(5)
|
|
faddp st(3),st(0)
|
|
fmul ds:dword ptr[8+ebx]
|
|
fxch st(1)
|
|
faddp st(3),st(0)
|
|
fxch st(3)
|
|
faddp st(2),st(0)
|
|
LSetSides:
|
|
faddp st(2),st(0)
|
|
fcomp ds:dword ptr[12+edx]
|
|
xor ecx,ecx
|
|
fnstsw ax
|
|
fcomp ds:dword ptr[12+edx]
|
|
and ah,1
|
|
xor ah,1
|
|
add cl,ah
|
|
fnstsw ax
|
|
and ah,1
|
|
add ah,ah
|
|
add cl,ah
|
|
pop ebx
|
|
mov eax,ecx
|
|
ret
|
|
Lerror:
|
|
int 3
|
|
}
|
|
}
|
|
#pragma warning( default: 4035 )
|
|
#endif
|
|
|
|
void ClearBounds (vec3_t mins, vec3_t maxs)
|
|
{
|
|
mins[0] = mins[1] = mins[2] = 99999;
|
|
maxs[0] = maxs[1] = maxs[2] = -99999;
|
|
}
|
|
|
|
void AddPointToBounds (vec3_t v, vec3_t mins, vec3_t maxs)
|
|
{
|
|
int i;
|
|
vec_t val;
|
|
|
|
for (i=0 ; i<3 ; i++)
|
|
{
|
|
val = v[i];
|
|
if (val < mins[i])
|
|
mins[i] = val;
|
|
if (val > maxs[i])
|
|
maxs[i] = val;
|
|
}
|
|
}
|
|
|
|
|
|
int VectorCompare (vec3_t v1, vec3_t v2)
|
|
{
|
|
if (v1[0] != v2[0] || v1[1] != v2[1] || v1[2] != v2[2])
|
|
return 0;
|
|
|
|
return 1;
|
|
}
|
|
|
|
|
|
vec_t VectorNormalize (vec3_t v)
|
|
{
|
|
float length, ilength;
|
|
|
|
length = v[0]*v[0] + v[1]*v[1] + v[2]*v[2];
|
|
length = sqrt (length); // FIXME
|
|
|
|
if (length)
|
|
{
|
|
ilength = 1/length;
|
|
v[0] *= ilength;
|
|
v[1] *= ilength;
|
|
v[2] *= ilength;
|
|
}
|
|
|
|
return length;
|
|
|
|
}
|
|
|
|
vec_t VectorNormalize2 (vec3_t v, vec3_t out)
|
|
{
|
|
float length, ilength;
|
|
|
|
length = v[0]*v[0] + v[1]*v[1] + v[2]*v[2];
|
|
length = sqrt (length); // FIXME
|
|
|
|
if (length)
|
|
{
|
|
ilength = 1/length;
|
|
out[0] = v[0]*ilength;
|
|
out[1] = v[1]*ilength;
|
|
out[2] = v[2]*ilength;
|
|
}
|
|
|
|
return length;
|
|
|
|
}
|
|
|
|
void VectorMA (vec3_t veca, float scale, vec3_t vecb, vec3_t vecc)
|
|
{
|
|
vecc[0] = veca[0] + scale*vecb[0];
|
|
vecc[1] = veca[1] + scale*vecb[1];
|
|
vecc[2] = veca[2] + scale*vecb[2];
|
|
}
|
|
|
|
|
|
vec_t _DotProduct (vec3_t v1, vec3_t v2)
|
|
{
|
|
return v1[0]*v2[0] + v1[1]*v2[1] + v1[2]*v2[2];
|
|
}
|
|
|
|
void _VectorSubtract (vec3_t veca, vec3_t vecb, vec3_t out)
|
|
{
|
|
out[0] = veca[0]-vecb[0];
|
|
out[1] = veca[1]-vecb[1];
|
|
out[2] = veca[2]-vecb[2];
|
|
}
|
|
|
|
void _VectorAdd (vec3_t veca, vec3_t vecb, vec3_t out)
|
|
{
|
|
out[0] = veca[0]+vecb[0];
|
|
out[1] = veca[1]+vecb[1];
|
|
out[2] = veca[2]+vecb[2];
|
|
}
|
|
|
|
void _VectorCopy (vec3_t in, vec3_t out)
|
|
{
|
|
out[0] = in[0];
|
|
out[1] = in[1];
|
|
out[2] = in[2];
|
|
}
|
|
|
|
void CrossProduct (vec3_t v1, vec3_t v2, vec3_t cross)
|
|
{
|
|
cross[0] = v1[1]*v2[2] - v1[2]*v2[1];
|
|
cross[1] = v1[2]*v2[0] - v1[0]*v2[2];
|
|
cross[2] = v1[0]*v2[1] - v1[1]*v2[0];
|
|
}
|
|
|
|
double sqrt(double x);
|
|
|
|
vec_t VectorLength(vec3_t v)
|
|
{
|
|
int i;
|
|
float length;
|
|
|
|
length = 0;
|
|
for (i=0 ; i< 3 ; i++)
|
|
length += v[i]*v[i];
|
|
length = sqrt (length); // FIXME
|
|
|
|
return length;
|
|
}
|
|
|
|
void VectorInverse (vec3_t v)
|
|
{
|
|
v[0] = -v[0];
|
|
v[1] = -v[1];
|
|
v[2] = -v[2];
|
|
}
|
|
|
|
void VectorScale (vec3_t in, vec_t scale, vec3_t out)
|
|
{
|
|
out[0] = in[0]*scale;
|
|
out[1] = in[1]*scale;
|
|
out[2] = in[2]*scale;
|
|
}
|
|
|
|
|
|
int Q_log2(int val)
|
|
{
|
|
int answer=0;
|
|
while (val>>=1)
|
|
answer++;
|
|
return answer;
|
|
}
|
|
|
|
|
|
|
|
//====================================================================================
|
|
|
|
/*
|
|
============
|
|
COM_SkipPath
|
|
============
|
|
*/
|
|
char *COM_SkipPath (char *pathname)
|
|
{
|
|
char *last;
|
|
|
|
last = pathname;
|
|
while (*pathname)
|
|
{
|
|
if (*pathname=='/')
|
|
last = pathname+1;
|
|
pathname++;
|
|
}
|
|
return last;
|
|
}
|
|
|
|
/*
|
|
============
|
|
COM_StripExtension
|
|
============
|
|
*/
|
|
void COM_StripExtension (char *in, char *out)
|
|
{
|
|
while (*in && *in != '.')
|
|
*out++ = *in++;
|
|
*out = 0;
|
|
}
|
|
|
|
/*
|
|
============
|
|
COM_FileExtension
|
|
============
|
|
*/
|
|
char *COM_FileExtension (char *in)
|
|
{
|
|
static char exten[8];
|
|
int i;
|
|
|
|
while (*in && *in != '.')
|
|
in++;
|
|
if (!*in)
|
|
return "";
|
|
in++;
|
|
for (i=0 ; i<7 && *in ; i++,in++)
|
|
exten[i] = *in;
|
|
exten[i] = 0;
|
|
return exten;
|
|
}
|
|
|
|
/*
|
|
============
|
|
COM_FileBase
|
|
============
|
|
*/
|
|
void COM_FileBase (char *in, char *out)
|
|
{
|
|
char *s, *s2;
|
|
|
|
s = in + strlen(in) - 1;
|
|
|
|
while (s != in && *s != '.')
|
|
s--;
|
|
|
|
for (s2 = s ; s2 != in && *s2 != '/' ; s2--)
|
|
;
|
|
|
|
if (s-s2 < 2)
|
|
out[0] = 0;
|
|
else
|
|
{
|
|
s--;
|
|
strncpy (out,s2+1, s-s2);
|
|
out[s-s2] = 0;
|
|
}
|
|
}
|
|
|
|
/*
|
|
============
|
|
COM_FilePath
|
|
|
|
Returns the path up to, but not including the last /
|
|
============
|
|
*/
|
|
void COM_FilePath (char *in, char *out)
|
|
{
|
|
char *s;
|
|
|
|
s = in + strlen(in) - 1;
|
|
|
|
while (s != in && *s != '/')
|
|
s--;
|
|
|
|
strncpy (out,in, s-in);
|
|
out[s-in] = 0;
|
|
}
|
|
|
|
|
|
/*
|
|
==================
|
|
COM_DefaultExtension
|
|
==================
|
|
*/
|
|
void COM_DefaultExtension (char *path, char *extension)
|
|
{
|
|
char *src;
|
|
//
|
|
// if path doesn't have a .EXT, append extension
|
|
// (extension should include the .)
|
|
//
|
|
src = path + strlen(path) - 1;
|
|
|
|
while (*src != '/' && src != path)
|
|
{
|
|
if (*src == '.')
|
|
return; // it has an extension
|
|
src--;
|
|
}
|
|
|
|
strcat (path, extension);
|
|
}
|
|
|
|
/*
|
|
============================================================================
|
|
|
|
BYTE ORDER FUNCTIONS
|
|
|
|
============================================================================
|
|
*/
|
|
|
|
qboolean bigendien;
|
|
|
|
// can't just use function pointers, or dll linkage can
|
|
// mess up when qcommon is included in multiple places
|
|
short (*_BigShort) (short l);
|
|
short (*_LittleShort) (short l);
|
|
int (*_BigLong) (int l);
|
|
int (*_LittleLong) (int l);
|
|
float (*_BigFloat) (float l);
|
|
float (*_LittleFloat) (float l);
|
|
|
|
short BigShort(short l){return _BigShort(l);}
|
|
short LittleShort(short l) {return _LittleShort(l);}
|
|
int BigLong (int l) {return _BigLong(l);}
|
|
int LittleLong (int l) {return _LittleLong(l);}
|
|
float BigFloat (float l) {return _BigFloat(l);}
|
|
float LittleFloat (float l) {return _LittleFloat(l);}
|
|
|
|
short ShortSwap (short l)
|
|
{
|
|
byte b1,b2;
|
|
|
|
b1 = l&255;
|
|
b2 = (l>>8)&255;
|
|
|
|
return (b1<<8) + b2;
|
|
}
|
|
|
|
short ShortNoSwap (short l)
|
|
{
|
|
return l;
|
|
}
|
|
|
|
int LongSwap (int l)
|
|
{
|
|
byte b1,b2,b3,b4;
|
|
|
|
b1 = l&255;
|
|
b2 = (l>>8)&255;
|
|
b3 = (l>>16)&255;
|
|
b4 = (l>>24)&255;
|
|
|
|
return ((int)b1<<24) + ((int)b2<<16) + ((int)b3<<8) + b4;
|
|
}
|
|
|
|
int LongNoSwap (int l)
|
|
{
|
|
return l;
|
|
}
|
|
|
|
float FloatSwap (float f)
|
|
{
|
|
union
|
|
{
|
|
float f;
|
|
byte b[4];
|
|
} dat1, dat2;
|
|
|
|
|
|
dat1.f = f;
|
|
dat2.b[0] = dat1.b[3];
|
|
dat2.b[1] = dat1.b[2];
|
|
dat2.b[2] = dat1.b[1];
|
|
dat2.b[3] = dat1.b[0];
|
|
return dat2.f;
|
|
}
|
|
|
|
float FloatNoSwap (float f)
|
|
{
|
|
return f;
|
|
}
|
|
|
|
/*
|
|
================
|
|
Swap_Init
|
|
================
|
|
*/
|
|
void Swap_Init (void)
|
|
{
|
|
byte swaptest[2] = {1,0};
|
|
|
|
// set the byte swapping variables in a portable manner
|
|
if ( *(short *)swaptest == 1)
|
|
{
|
|
bigendien = false;
|
|
_BigShort = ShortSwap;
|
|
_LittleShort = ShortNoSwap;
|
|
_BigLong = LongSwap;
|
|
_LittleLong = LongNoSwap;
|
|
_BigFloat = FloatSwap;
|
|
_LittleFloat = FloatNoSwap;
|
|
}
|
|
else
|
|
{
|
|
bigendien = true;
|
|
_BigShort = ShortNoSwap;
|
|
_LittleShort = ShortSwap;
|
|
_BigLong = LongNoSwap;
|
|
_LittleLong = LongSwap;
|
|
_BigFloat = FloatNoSwap;
|
|
_LittleFloat = FloatSwap;
|
|
}
|
|
|
|
}
|
|
|
|
|
|
/*
|
|
============
|
|
va
|
|
|
|
does a varargs printf into a temp buffer, so I don't need to have
|
|
varargs versions of all text functions.
|
|
FIXME: make this buffer size safe someday
|
|
============
|
|
*/
|
|
char *va (char *format, ...)
|
|
{
|
|
va_list argptr;
|
|
static char string[1024];
|
|
|
|
va_start (argptr, format);
|
|
Q_vsnprintf (string, sizeof(string), format, argptr);
|
|
va_end (argptr);
|
|
|
|
return string;
|
|
}
|
|
|
|
|
|
char com_token[MAX_TOKEN_CHARS];
|
|
|
|
/*
|
|
==============
|
|
COM_Parse
|
|
|
|
Parse a token out of a string
|
|
==============
|
|
*/
|
|
char *COM_Parse (char **data_p)
|
|
{
|
|
int c;
|
|
int len;
|
|
char *data;
|
|
|
|
data = *data_p;
|
|
len = 0;
|
|
com_token[0] = 0;
|
|
|
|
if (!data)
|
|
{
|
|
*data_p = NULL;
|
|
return "";
|
|
}
|
|
|
|
// skip whitespace
|
|
skipwhite:
|
|
while ( (c = *data) <= ' ')
|
|
{
|
|
if (c == 0)
|
|
{
|
|
*data_p = NULL;
|
|
return "";
|
|
}
|
|
data++;
|
|
}
|
|
|
|
// skip // comments
|
|
if (c=='/' && data[1] == '/')
|
|
{
|
|
while (*data && *data != '\n')
|
|
data++;
|
|
goto skipwhite;
|
|
}
|
|
|
|
|
|
// handle quoted strings specially
|
|
if (c == '\"')
|
|
{
|
|
data++;
|
|
while (1)
|
|
{
|
|
c = *data++;
|
|
if (c=='\"' || !c)
|
|
{
|
|
if (len == MAX_TOKEN_CHARS) // Knightmare- discard if > MAX_TOKEN_CHARS-1
|
|
len = 0;
|
|
|
|
com_token[len] = 0;
|
|
*data_p = data;
|
|
return com_token;
|
|
}
|
|
if (len < MAX_TOKEN_CHARS)
|
|
{
|
|
com_token[len] = c;
|
|
len++;
|
|
}
|
|
}
|
|
}
|
|
|
|
// parse a regular word
|
|
do
|
|
{
|
|
if (len < MAX_TOKEN_CHARS)
|
|
{
|
|
com_token[len] = c;
|
|
len++;
|
|
}
|
|
data++;
|
|
c = *data;
|
|
} while (c>32);
|
|
|
|
if (len == MAX_TOKEN_CHARS)
|
|
{
|
|
// Com_Printf ("Token exceeded %i chars, discarded.\n", MAX_TOKEN_CHARS);
|
|
len = 0;
|
|
}
|
|
com_token[len] = 0;
|
|
|
|
*data_p = data;
|
|
return com_token;
|
|
}
|
|
|
|
|
|
/*
|
|
===============
|
|
Com_PageInMemory
|
|
|
|
===============
|
|
*/
|
|
int paged_total;
|
|
|
|
void Com_PageInMemory (byte *buffer, int size)
|
|
{
|
|
int i;
|
|
|
|
for (i=size-1 ; i>0 ; i-=4096)
|
|
paged_total += buffer[i];
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
============================================================================
|
|
|
|
LIBRARY REPLACEMENT FUNCTIONS
|
|
|
|
============================================================================
|
|
*/
|
|
|
|
// FIXME: replace all Q_stricmp with Q_strcasecmp
|
|
int Q_stricmp (const char *s1, const char *s2)
|
|
{
|
|
#if defined(WIN32)
|
|
return _stricmp (s1, s2);
|
|
#else
|
|
return strcasecmp (s1, s2);
|
|
#endif
|
|
}
|
|
|
|
|
|
int Q_strncasecmp (const char *s1, const char *s2, size_t n)
|
|
{
|
|
int c1, c2;
|
|
|
|
do
|
|
{
|
|
c1 = *s1++;
|
|
c2 = *s2++;
|
|
|
|
if (!n--)
|
|
return 0; // strings are equal until end point
|
|
|
|
if (c1 != c2)
|
|
{
|
|
if (c1 >= 'a' && c1 <= 'z')
|
|
c1 -= ('a' - 'A');
|
|
if (c2 >= 'a' && c2 <= 'z')
|
|
c2 -= ('a' - 'A');
|
|
if (c1 != c2)
|
|
return -1; // strings not equal
|
|
}
|
|
} while (c1);
|
|
|
|
return 0; // strings are equal
|
|
}
|
|
|
|
int Q_strcasecmp (const char *s1, const char *s2)
|
|
{
|
|
return Q_strncasecmp (s1, s2, 99999);
|
|
}
|
|
|
|
|
|
|
|
void Com_sprintf (char *dest, size_t size, char *fmt, ...)
|
|
{
|
|
char bigbuffer[0x10000];
|
|
int len;
|
|
va_list argptr;
|
|
|
|
va_start (argptr, fmt);
|
|
len = Q_vsnprintf (bigbuffer, sizeof(bigbuffer), fmt, argptr);
|
|
va_end (argptr);
|
|
if (len >= size)
|
|
Com_Printf ("Com_sprintf: overflow of %i in %i\n", len, size);
|
|
strncpy (dest, bigbuffer, size-1);
|
|
dest[size-1] = 0;
|
|
}
|
|
|
|
void Com_strcpy (char *dest, size_t destSize, const char *src)
|
|
{
|
|
if (!dest) {
|
|
Com_Printf ("Com_strcpy: NULL dst\n");
|
|
return;
|
|
}
|
|
if (!src) {
|
|
Com_Printf ("Com_strcpy: NULL src\n");
|
|
return;
|
|
}
|
|
if (destSize < 1) {
|
|
Com_Printf ("Com_strcpy: dstSize < 1\n");
|
|
return;
|
|
}
|
|
|
|
strncpy(dest, src, destSize-1);
|
|
dest[destSize-1] = 0;
|
|
}
|
|
|
|
|
|
void Com_strcat (char *dest, size_t destSize, const char *src)
|
|
{
|
|
if (!dest) {
|
|
Com_Printf ("Com_strcat: NULL dst\n");
|
|
return;
|
|
}
|
|
if (!src) {
|
|
Com_Printf ("Com_strcat: NULL src\n");
|
|
return;
|
|
}
|
|
if (destSize < 1) {
|
|
Com_Printf ("Com_strcat: dstSize < 1\n");
|
|
return;
|
|
}
|
|
|
|
while (--destSize && *dest)
|
|
dest++;
|
|
|
|
if (destSize > 0) {
|
|
while (--destSize && *src)
|
|
*dest++ = *src++;
|
|
|
|
*dest = 0;
|
|
}
|
|
}
|
|
|
|
/*
|
|
=====================================================================
|
|
|
|
INFO STRINGS
|
|
|
|
=====================================================================
|
|
*/
|
|
|
|
/*
|
|
===============
|
|
Info_ValueForKey
|
|
|
|
Searches the string for the given
|
|
key and returns the associated value, or an empty string.
|
|
===============
|
|
*/
|
|
char *Info_ValueForKey (char *s, char *key)
|
|
{
|
|
char pkey[512];
|
|
static char value[2][512]; // use two buffers so compares
|
|
// work without stomping on each other
|
|
static int valueindex;
|
|
char *o;
|
|
|
|
valueindex ^= 1;
|
|
if (*s == '\\')
|
|
s++;
|
|
while (1)
|
|
{
|
|
o = pkey;
|
|
while (*s != '\\')
|
|
{
|
|
if (!*s)
|
|
return "";
|
|
*o++ = *s++;
|
|
}
|
|
*o = 0;
|
|
s++;
|
|
|
|
o = value[valueindex];
|
|
|
|
while (*s != '\\' && *s)
|
|
{
|
|
if (!*s)
|
|
return "";
|
|
*o++ = *s++;
|
|
}
|
|
*o = 0;
|
|
|
|
if (!strcmp (key, pkey) )
|
|
return value[valueindex];
|
|
|
|
if (!*s)
|
|
return "";
|
|
s++;
|
|
}
|
|
}
|
|
|
|
void Info_RemoveKey (char *s, char *key)
|
|
{
|
|
char *start;
|
|
char pkey[512];
|
|
char value[512];
|
|
char *o;
|
|
|
|
if (strstr (key, "\\"))
|
|
{
|
|
// Com_Printf ("Can't use a key with a \\\n");
|
|
return;
|
|
}
|
|
|
|
while (1)
|
|
{
|
|
start = s;
|
|
if (*s == '\\')
|
|
s++;
|
|
o = pkey;
|
|
while (*s != '\\')
|
|
{
|
|
if (!*s)
|
|
return;
|
|
*o++ = *s++;
|
|
}
|
|
*o = 0;
|
|
s++;
|
|
|
|
o = value;
|
|
while (*s != '\\' && *s)
|
|
{
|
|
if (!*s)
|
|
return;
|
|
*o++ = *s++;
|
|
}
|
|
*o = 0;
|
|
|
|
if (!strcmp (key, pkey) )
|
|
{
|
|
strcpy (start, s); // remove this part
|
|
return;
|
|
}
|
|
|
|
if (!*s)
|
|
return;
|
|
}
|
|
|
|
}
|
|
|
|
|
|
/*
|
|
==================
|
|
Info_Validate
|
|
|
|
Some characters are illegal in info strings because they
|
|
can mess up the server's parsing
|
|
==================
|
|
*/
|
|
qboolean Info_Validate (char *s)
|
|
{
|
|
if (strstr (s, "\""))
|
|
return false;
|
|
if (strstr (s, ";"))
|
|
return false;
|
|
return true;
|
|
}
|
|
|
|
void Info_SetValueForKey (char *s, char *key, char *value)
|
|
{
|
|
char newi[MAX_INFO_STRING], *v;
|
|
int c;
|
|
int maxsize = MAX_INFO_STRING;
|
|
|
|
if (strstr (key, "\\") || strstr (value, "\\") )
|
|
{
|
|
Com_Printf ("Can't use keys or values with a \\\n");
|
|
return;
|
|
}
|
|
|
|
if (strstr (key, ";") )
|
|
{
|
|
Com_Printf ("Can't use keys or values with a semicolon\n");
|
|
return;
|
|
}
|
|
|
|
if (strstr (key, "\"") || strstr (value, "\"") )
|
|
{
|
|
Com_Printf ("Can't use keys or values with a \"\n");
|
|
return;
|
|
}
|
|
|
|
if (strlen(key) > MAX_INFO_KEY-1 || strlen(value) > MAX_INFO_KEY-1)
|
|
{
|
|
Com_Printf ("Keys and values must be < 64 characters.\n");
|
|
return;
|
|
}
|
|
Info_RemoveKey (s, key);
|
|
if (!value || !strlen(value))
|
|
return;
|
|
|
|
Com_sprintf (newi, sizeof(newi), "\\%s\\%s", key, value);
|
|
|
|
if (strlen(newi) + strlen(s) > maxsize)
|
|
{
|
|
Com_Printf ("Info string length exceeded\n");
|
|
return;
|
|
}
|
|
|
|
// only copy ascii values
|
|
s += strlen(s);
|
|
v = newi;
|
|
while (*v)
|
|
{
|
|
c = *v++;
|
|
c &= 127; // strip high bits
|
|
if (c >= 32 && c < 127)
|
|
*s++ = c;
|
|
}
|
|
*s = 0;
|
|
}
|
|
|
|
//====================================================================
|
|
|
|
|