contrib/bobtoolz/DBobView.cpp

   1 /*
   2    BobToolz plugin for GtkRadiant
   3    Copyright (C) 2001 Gordon Biggans
   4
   5    This library is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Lesser General Public
   7    License as published by the Free Software Foundation; either
   8    version 2.1 of the License, or (at your option) any later version.
   9
  10    This library is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13    Lesser General Public License for more details.
  14
  15    You should have received a copy of the GNU Lesser General Public
  16    License along with this library; if not, write to the Free Software
  17    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  18  */
  19
  20 // BobView.cpp: implementation of the DBobView class.
  21 //
  22 //////////////////////////////////////////////////////////////////////
  23
  24 #include "StdAfx.h"
  25 #include "DBobView.h"
  26 #include "DListener.h"
  27 #include "misc.h"
  28 #include "funchandlers.h"
  29
  30 //////////////////////////////////////////////////////////////////////
  31 // Construction/Destruction
  32 //////////////////////////////////////////////////////////////////////
  33
  34 DBobView::DBobView(){
  35         nPathCount = 0;
  36         refCount = 1;
  37
  38         m_bHooked = FALSE;
  39
  40         path = NULL;
  41         eyes = NULL;
  42
  43         boundingShow = BOUNDS_APEX;
  44 }
  45
  46 DBobView::~DBobView(){
  47         if ( path ) {
  48                 delete[] path;
  49         }
  50
  51         // oops forgot to remove our eyes, was causing access violation when it tried
  52         // to talk to it's parent
  53         if ( eyes ) {
  54                 delete eyes;
  55         }
  56
  57         if ( m_bHooked ) {
  58                 UnRegister();
  59         }
  60
  61         g_PathView = NULL;
  62 }
  63
  64 //////////////////////////////////////////////////////////////////////
  65 // Implementation
  66 //////////////////////////////////////////////////////////////////////
  67
  68 void DBobView::Draw2D( VIEWTYPE vt ){
  69         if ( !path ) {
  70                 return;
  71         }
  72
  73         g_QglTable.m_pfn_qglPushAttrib( GL_ALL_ATTRIB_BITS );
  74
  75         g_QglTable.m_pfn_qglDisable( GL_BLEND );
  76         g_QglTable.m_pfn_qglEnable( GL_LINE_SMOOTH );
  77
  78         g_QglTable.m_pfn_qglPushMatrix();
  79
  80         switch ( vt )
  81         {
  82         case XY:
  83                 break;
  84         case XZ:
  85                 g_QglTable.m_pfn_qglRotatef( 270.0f, 1.0f, 0.0f, 0.0f );
  86                 break;
  87         case YZ:
  88                 g_QglTable.m_pfn_qglRotatef( 270.0f, 1.0f, 0.0f, 0.0f );
  89                 g_QglTable.m_pfn_qglRotatef( 270.0f, 0.0f, 0.0f, 1.0f );
  90                 break;
  91         }
  92
  93         g_QglTable.m_pfn_qglLineWidth( 1.0f );
  94         g_QglTable.m_pfn_qglColor4f( 1.0f, 0.0f, 0.0f, 1.0f );
  95
  96         int i;
  97
  98         g_QglTable.m_pfn_qglBegin( GL_LINE_STRIP );
  99
 100         for ( i = 0; i < nPathCount; i++ )
 101                 g_QglTable.m_pfn_qglVertex3fv( path[i] );
 102
 103         g_QglTable.m_pfn_qglEnd();
 104
 105         if ( m_bShowExtra ) {
 106                 // +mars
 107                 // for the bounding box stuff
 108                 g_QglTable.m_pfn_qglColor4f( 0.25f, 0.75f, 0.75f, 1.0f );
 109
 110                 g_QglTable.m_pfn_qglTranslatef( 16.0f, 16.0f, 28.0f );
 111
 112                 g_QglTable.m_pfn_qglBegin( GL_LINE_STRIP );
 113
 114                 for ( i = 0; i < nPathCount; i++ )
 115                         g_QglTable.m_pfn_qglVertex3fv( path[i] );
 116
 117                 g_QglTable.m_pfn_qglEnd();
 118
 119                 // ---------------
 120
 121                 g_QglTable.m_pfn_qglTranslatef( -16.0f, -16.0f, -28.0f );   // back to where we were
 122                 g_QglTable.m_pfn_qglTranslatef( -16.0f, 16.0f, 28.0f );     // move to new postion
 123
 124                 g_QglTable.m_pfn_qglBegin( GL_LINE_STRIP );
 125
 126                 for ( i = 0; i < nPathCount; i++ )
 127                         g_QglTable.m_pfn_qglVertex3fv( path[i] );
 128
 129                 g_QglTable.m_pfn_qglEnd();
 130
 131                 // --------------
 132
 133                 g_QglTable.m_pfn_qglTranslatef( 16.0f, -16.0f, -28.0f );        // back to where we were
 134                 g_QglTable.m_pfn_qglTranslatef( 16.0f, -16.0f, -28.0f );        // new pos
 135
 136                 g_QglTable.m_pfn_qglBegin( GL_LINE_STRIP );
 137
 138                 for ( i = 0; i < nPathCount; i++ )
 139                         g_QglTable.m_pfn_qglVertex3fv( path[i] );
 140
 141                 g_QglTable.m_pfn_qglEnd();
 142
 143                 // ----------------
 144
 145                 g_QglTable.m_pfn_qglTranslatef( -16.0f, 16.0f, 28.0f );     // back to where we were
 146
 147 /*              g_QglTable.m_pfn_qglTranslatef( -16.0f, -16.0f, -28.0f );               // new pos
 148
 149         g_QglTable.m_pfn_qglBegin( GL_LINE_STRIP );
 150
 151         if ( boundingShow == BOUNDS_ALL )
 152         {
 153             for ( i = 0; i < nPathCount; i++ )
 154                 g_QglTable.m_pfn_qglVertex3fv( path[i] );
 155         }
 156         else if ( boundingShow == BOUNDS_APEX )
 157         {
 158             for ( i = (nPathCount/4); i < (nPathCount/4) * 3; i++ )
 159                 g_QglTable.m_pfn_qglVertex3fv( path[i] );
 160         }
 161
 162         g_QglTable.m_pfn_qglEnd();*/                                                                                                                                                                                                                                                                                                                                                                                                                   // djbob: er, um doesn't really seem to do anyhting
 163         }
 164
 165         // -mars
 166
 167         g_QglTable.m_pfn_qglPopMatrix();
 168
 169         g_QglTable.m_pfn_qglPopAttrib();
 170 }
 171
 172 void DBobView::Draw3D(){
 173         if ( !path ) {
 174                 return;
 175         }
 176
 177         g_QglTable.m_pfn_qglPushAttrib( GL_ALL_ATTRIB_BITS );
 178
 179         g_QglTable.m_pfn_qglDisable( GL_BLEND );
 180         g_QglTable.m_pfn_qglEnable( GL_LINE_SMOOTH );
 181
 182         g_QglTable.m_pfn_qglLineWidth( 1.0f );
 183         g_QglTable.m_pfn_qglColor4f( 1.0f, 0.0f, 0.0f, 1.0f );
 184
 185         g_QglTable.m_pfn_qglBegin( GL_LINE_STRIP );
 186
 187         for ( int i = 0; i < nPathCount; i++ )
 188                 g_QglTable.m_pfn_qglVertex3fv( path[i] );
 189
 190         g_QglTable.m_pfn_qglEnd();
 191
 192         if ( m_bShowExtra ) {
 193                 // +mars
 194                 // ahhh -- a nice C&P job :)
 195                 // for the bounding box stuff
 196                 g_QglTable.m_pfn_qglColor4f( 0.25f, 0.75f, 0.75f, 1.0f );
 197
 198                 g_QglTable.m_pfn_qglTranslatef( 16.0f, 16.0f, 28.0f );
 199
 200                 g_QglTable.m_pfn_qglBegin( GL_LINE_STRIP );
 201
 202                 int i;
 203                 for ( i = 0; i < nPathCount; i++ )
 204                         g_QglTable.m_pfn_qglVertex3fv( path[i] );
 205
 206                 g_QglTable.m_pfn_qglEnd();
 207
 208                 // ---------------
 209
 210                 g_QglTable.m_pfn_qglTranslatef( -16.0f, -16.0f, -28.0f );   // back to where we were
 211                 g_QglTable.m_pfn_qglTranslatef( -16.0f, 16.0f, 28.0f );     // move to new postion
 212
 213                 g_QglTable.m_pfn_qglBegin( GL_LINE_STRIP );
 214
 215                 for ( i = 0; i < nPathCount; i++ )
 216                         g_QglTable.m_pfn_qglVertex3fv( path[i] );
 217
 218                 g_QglTable.m_pfn_qglEnd();
 219
 220                 // --------------
 221
 222                 g_QglTable.m_pfn_qglTranslatef( 16.0f, -16.0f, -28.0f );        // back to where we were
 223                 g_QglTable.m_pfn_qglTranslatef( 16.0f, -16.0f, -28.0f );        // new pos
 224
 225                 g_QglTable.m_pfn_qglBegin( GL_LINE_STRIP );
 226
 227                 for ( i = 0; i < nPathCount; i++ )
 228                         g_QglTable.m_pfn_qglVertex3fv( path[i] );
 229
 230                 g_QglTable.m_pfn_qglEnd();
 231
 232                 // ----------------
 233
 234                 g_QglTable.m_pfn_qglTranslatef( -16.0f, 16.0f, 28.0f );     // back to where we were
 235                 g_QglTable.m_pfn_qglTranslatef( -16.0f, -16.0f, -28.0f );       // new pos
 236
 237                 g_QglTable.m_pfn_qglBegin( GL_LINE_STRIP );
 238
 239                 for ( i = 0; i < nPathCount; i++ )
 240                         g_QglTable.m_pfn_qglVertex3fv( path[i] );
 241
 242                 g_QglTable.m_pfn_qglEnd();
 243         }
 244         // -mars
 245
 246         g_QglTable.m_pfn_qglPopAttrib();
 247 }
 248
 249 void DBobView::Register(){
 250         g_QglTable.m_pfnHookGL2DWindow( this );
 251         g_QglTable.m_pfnHookGL3DWindow( this );
 252         m_bHooked = TRUE;
 253 }
 254
 255 void DBobView::UnRegister(){
 256         g_QglTable.m_pfnUnHookGL2DWindow( this );
 257         g_QglTable.m_pfnUnHookGL3DWindow( this );
 258         m_bHooked = FALSE;
 259 }
 260
 261 void DBobView::SetPath( vec3_t *pPath ){
 262         if ( path ) {
 263                 delete[] path;
 264         }
 265
 266         path = pPath;
 267 }
 268
 269 #define LOCAL_GRAVITY -800.0f
 270
 271 bool DBobView::CalculateTrajectory( vec3_t start, vec3_t apex, float multiplier, int points, float varGravity ){
 272         if ( apex[2] <= start[2] ) {
 273                 SetPath( NULL );
 274                 return FALSE;
 275         }
 276         // ----think q3a actually would allow these
 277         //scrub that, coz the plugin wont :]
 278
 279         vec3_t dist, speed;
 280         VectorSubtract( apex, start, dist );
 281
 282         vec_t speed_z = (float)sqrt( -2 * LOCAL_GRAVITY * dist[2] );
 283         float flight_time = -speed_z / LOCAL_GRAVITY;
 284
 285
 286         VectorScale( dist, 1 / flight_time, speed );
 287         speed[2] = speed_z;
 288
 289 //      Sys_Printf("Speed: (%.4f %.4f %.4f)\n", speed[0], speed[1], speed[2]);
 290
 291         vec3_t* pPath = new vec3_t[points];
 292
 293         float interval = multiplier * flight_time / points;
 294         for ( int i = 0; i < points; i++ )
 295         {
 296                 float ltime = interval * i;
 297
 298                 VectorScale( speed, ltime, pPath[i] );
 299                 VectorAdd( pPath[i], start, pPath[i] );
 300
 301                 // could do this all with vectors
 302                 // vGrav = {0, 0, -800.0f}
 303                 // VectorScale(vGrav, 0.5f*ltime*ltime, vAdd);
 304                 // VectorScale(speed, ltime, pPath[i]);
 305                 // _VectorAdd(pPath[i], start, pPath[i])
 306                 // _VectorAdd(pPath[i], vAdd, pPath[i])
 307
 308                 pPath[i][2] = start[2] + ( speed_z * ltime ) + ( varGravity * 0.5f * ltime * ltime );
 309         }
 310
 311         SetPath( pPath );
 312         return TRUE;
 313 }
 314
 315 void DBobView::Begin( const char* trigger, const char *target, float multiplier, int points, float varGravity, bool bNoUpdate, bool bShowExtra ){
 316         strcpy( entTrigger, trigger );
 317         strcpy( entTarget, target );
 318
 319         fMultiplier = multiplier;
 320         fVarGravity = varGravity;
 321         nPathCount = points;
 322         m_bShowExtra = bShowExtra;
 323
 324         Register();
 325
 326         if ( UpdatePath() ) {
 327                 if ( !bNoUpdate ) {
 328                         eyes = new DListener;
 329                         eyes->parent = this;
 330                         eyes->Register();
 331                 }
 332         }
 333         else
 334         {
 335                 Sys_ERROR( "Initialization Failure in DBobView::Begin" );
 336                 delete this;
 337         }
 338 }
 339
 340 bool DBobView::UpdatePath(){
 341         vec3_t start, apex;
 342
 343         if ( GetEntityCentre( entTrigger, start ) ) {
 344                 if ( GetEntityCentre( entTarget, apex ) ) {
 345                         CalculateTrajectory( start, apex, fMultiplier, nPathCount, fVarGravity );
 346                         return TRUE;
 347                 }
 348         }
 349         return FALSE;
 350 }