You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
137 lines
2.5 KiB
137 lines
2.5 KiB
/*** |
|
* |
|
* Copyright (c) 1996-2002, Valve LLC. All rights reserved. |
|
* |
|
* This product contains software technology licensed from Id |
|
* Software, Inc. ("Id Technology"). Id Technology (c) 1996 Id Software, Inc. |
|
* All Rights Reserved. |
|
* |
|
* Use, distribution, and modification of this source code and/or resulting |
|
* object code is restricted to non-commercial enhancements to products from |
|
* Valve LLC. All other use, distribution, or modification is prohibited |
|
* without written permission from Valve LLC. |
|
* |
|
****/ |
|
// |
|
// util.cpp |
|
// |
|
// implementation of class-less helper functions |
|
// |
|
|
|
#include <stdio.h> |
|
#include <stdlib.h> |
|
#include <cmath> |
|
|
|
#include "hud.h" |
|
#include "cl_util.h" |
|
#include <string.h> |
|
|
|
#if !defined(M_PI) |
|
#define M_PI 3.14159265358979323846 // matches value in gcc v2 math.h |
|
#endif |
|
|
|
#if !defined(M_PI_F) |
|
#define M_PI_F (float)M_PI |
|
#endif |
|
extern vec3_t vec3_origin; |
|
|
|
// if C++ mangling differs from C symbol name |
|
#if _MSC_VER || __WATCOMC__ |
|
vec3_t vec3_origin; |
|
#endif |
|
|
|
float Length( const float *v ) |
|
{ |
|
int i; |
|
float length; |
|
|
|
length = 0.0f; |
|
for( i = 0; i < 3; i++ ) |
|
length += v[i] * v[i]; |
|
length = sqrt( length ); // FIXME |
|
|
|
return length; |
|
} |
|
|
|
void VectorAngles( const float *forward, float *angles ) |
|
{ |
|
float tmp, yaw, pitch; |
|
|
|
if( forward[1] == 0.0f && forward[0] == 0.0f ) |
|
{ |
|
yaw = 0.0f; |
|
if( forward[2] > 0.0f ) |
|
pitch = 90.0f; |
|
else |
|
pitch = 270.0f; |
|
} |
|
else |
|
{ |
|
yaw = ( atan2( forward[1], forward[0]) * 180.0f / M_PI_F ); |
|
if( yaw < 0.0f ) |
|
yaw += 360.0f; |
|
|
|
tmp = sqrt( forward[0] * forward[0] + forward[1] * forward[1] ); |
|
pitch = ( atan2( forward[2], tmp ) * 180.0f / M_PI_F ); |
|
if( pitch < 0.0f ) |
|
pitch += 360.0f; |
|
} |
|
|
|
angles[0] = pitch; |
|
angles[1] = yaw; |
|
angles[2] = 0.0f; |
|
} |
|
|
|
float VectorNormalize( float *v ) |
|
{ |
|
float length, ilength; |
|
|
|
length = v[0] * v[0] + v[1] * v[1] + v[2] * v[2]; |
|
length = sqrt( length ); // FIXME |
|
|
|
if( length ) |
|
{ |
|
ilength = 1.0f / length; |
|
v[0] *= ilength; |
|
v[1] *= ilength; |
|
v[2] *= ilength; |
|
} |
|
|
|
return length; |
|
} |
|
|
|
void VectorInverse( float *v ) |
|
{ |
|
v[0] = -v[0]; |
|
v[1] = -v[1]; |
|
v[2] = -v[2]; |
|
} |
|
|
|
void VectorScale( const float *in, float scale, float *out ) |
|
{ |
|
out[0] = in[0] * scale; |
|
out[1] = in[1] * scale; |
|
out[2] = in[2] * scale; |
|
} |
|
|
|
void VectorMA( const float *veca, float scale, const float *vecb, float *vecc ) |
|
{ |
|
vecc[0] = veca[0] + scale * vecb[0]; |
|
vecc[1] = veca[1] + scale * vecb[1]; |
|
vecc[2] = veca[2] + scale * vecb[2]; |
|
} |
|
|
|
HSPRITE LoadSprite( const char *pszName ) |
|
{ |
|
int i; |
|
char sz[256]; |
|
|
|
if( ScreenWidth < 640 ) |
|
i = 320; |
|
else |
|
i = 640; |
|
|
|
sprintf( sz, pszName, i ); |
|
|
|
return SPR_Load( sz ); |
|
}
|
|
|