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 #include "gtkr_list.h"
  31 #include "str.h"
  32
  33 #include "misc.h"
  34
  35 //////////////////////////////////////////////////////////////////////
  36 // Construction/Destruction
  37 //////////////////////////////////////////////////////////////////////
  38
  39 DBobView::DBobView()
  40 {
  41         nPathCount = 0;
  42         refCount = 1;
  43
  44         m_bHooked = FALSE;
  45
  46         path = NULL;
  47         eyes = NULL;
  48
  49         boundingShow = BOUNDS_APEX;
  50 }
  51
  52 DBobView::~DBobView()
  53 {
  54         if(path)
  55                 delete[] path;
  56
  57         // oops forgot to remove our eyes, was causing access violation when it tried
  58         // to talk to it's parent
  59         if(eyes)
  60                 delete eyes;
  61
  62         if(m_bHooked)
  63                 UnRegister();
  64
  65         g_PathView = NULL;
  66 }
  67
  68 //////////////////////////////////////////////////////////////////////
  69 // Implementation
  70 //////////////////////////////////////////////////////////////////////
  71
  72 void DBobView::Draw2D(VIEWTYPE vt)
  73 {
  74         if(!path)
  75                 return;
  76
  77         __QGLTABLENAME.m_pfn_qglPushAttrib(GL_ALL_ATTRIB_BITS);
  78
  79         __QGLTABLENAME.m_pfn_qglDisable(GL_BLEND);
  80         __QGLTABLENAME.m_pfn_qglEnable(GL_LINE_SMOOTH);
  81
  82         __QGLTABLENAME.m_pfn_qglPushMatrix();
  83
  84         switch(vt)
  85         {
  86         case XY:
  87                 break;
  88         case XZ:
  89                 __QGLTABLENAME.m_pfn_qglRotatef(270.0f, 1.0f, 0.0f, 0.0f);
  90                 break;
  91         case YZ:
  92                 __QGLTABLENAME.m_pfn_qglRotatef(270.0f, 1.0f, 0.0f, 0.0f);
  93                 __QGLTABLENAME.m_pfn_qglRotatef(270.0f, 0.0f, 0.0f, 1.0f);
  94                 break;
  95         }
  96
  97         __QGLTABLENAME.m_pfn_qglLineWidth(1.0f);
  98         __QGLTABLENAME.m_pfn_qglColor4f(1.0f, 0.0f, 0.0f, 1.0f);
  99
 100         int i;
 101
 102         __QGLTABLENAME.m_pfn_qglBegin(GL_LINE_STRIP);
 103
 104         for(i = 0; i < nPathCount; i++)
 105                 __QGLTABLENAME.m_pfn_qglVertex3fv(path[i]);
 106
 107         __QGLTABLENAME.m_pfn_qglEnd();
 108
 109         if(m_bShowExtra)
 110         {
 111                 // +mars
 112                 // for the bounding box stuff
 113                 __QGLTABLENAME.m_pfn_qglColor4f(0.25f, 0.75f, 0.75f, 1.0f);
 114
 115                 __QGLTABLENAME.m_pfn_qglTranslatef( 16.0f, 16.0f, 28.0f );
 116
 117                 __QGLTABLENAME.m_pfn_qglBegin( GL_LINE_STRIP );
 118
 119                         for ( i = 0; i < nPathCount; i++ )
 120                                 __QGLTABLENAME.m_pfn_qglVertex3fv( path[i] );
 121
 122                 __QGLTABLENAME.m_pfn_qglEnd();
 123
 124         // ---------------
 125
 126                 __QGLTABLENAME.m_pfn_qglTranslatef( -16.0f, -16.0f, -28.0f );   // back to where we were
 127                 __QGLTABLENAME.m_pfn_qglTranslatef( -16.0f, 16.0f, 28.0f );             // move to new postion
 128
 129                 __QGLTABLENAME.m_pfn_qglBegin( GL_LINE_STRIP );
 130
 131                         for ( i = 0; i < nPathCount; i++ )
 132                                 __QGLTABLENAME.m_pfn_qglVertex3fv( path[i] );
 133
 134                 __QGLTABLENAME.m_pfn_qglEnd();
 135
 136         // --------------
 137
 138                 __QGLTABLENAME.m_pfn_qglTranslatef( 16.0f, -16.0f, -28.0f );            // back to where we were
 139                 __QGLTABLENAME.m_pfn_qglTranslatef( 16.0f, -16.0f, -28.0f );            // new pos
 140
 141                 __QGLTABLENAME.m_pfn_qglBegin( GL_LINE_STRIP );
 142
 143                         for ( i = 0; i < nPathCount; i++ )
 144                                 __QGLTABLENAME.m_pfn_qglVertex3fv( path[i] );
 145
 146                 __QGLTABLENAME.m_pfn_qglEnd();
 147
 148         // ----------------
 149
 150                 __QGLTABLENAME.m_pfn_qglTranslatef( -16.0f, 16.0f, 28.0f );             // back to where we were
 151
 152 /*              __QGLTABLENAME.m_pfn_qglTranslatef( -16.0f, -16.0f, -28.0f );           // new pos
 153
 154                 __QGLTABLENAME.m_pfn_qglBegin( GL_LINE_STRIP );
 155
 156                 if ( boundingShow == BOUNDS_ALL )
 157                 {
 158                         for ( i = 0; i < nPathCount; i++ )
 159                                 __QGLTABLENAME.m_pfn_qglVertex3fv( path[i] );
 160                 }
 161                 else if ( boundingShow == BOUNDS_APEX )
 162                 {
 163                         for ( i = (nPathCount/4); i < (nPathCount/4) * 3; i++ )
 164                                 __QGLTABLENAME.m_pfn_qglVertex3fv( path[i] );
 165                 }
 166
 167                 __QGLTABLENAME.m_pfn_qglEnd();*/ // djbob: er, um doesn't really seem to do anyhting
 168         }
 169
 170         // -mars
 171
 172         __QGLTABLENAME.m_pfn_qglPopMatrix();
 173
 174         __QGLTABLENAME.m_pfn_qglPopAttrib();
 175 }
 176
 177 void DBobView::Draw3D()
 178 {
 179         if(!path)
 180                 return;
 181
 182         __QGLTABLENAME.m_pfn_qglPushAttrib(GL_ALL_ATTRIB_BITS);
 183
 184         __QGLTABLENAME.m_pfn_qglDisable(GL_BLEND);
 185         __QGLTABLENAME.m_pfn_qglEnable(GL_LINE_SMOOTH);
 186
 187         __QGLTABLENAME.m_pfn_qglLineWidth(1.0f);
 188         __QGLTABLENAME.m_pfn_qglColor4f(1.0f, 0.0f, 0.0f, 1.0f);
 189
 190         __QGLTABLENAME.m_pfn_qglBegin(GL_LINE_STRIP);
 191
 192         for(int i = 0; i < nPathCount; i++)
 193                 __QGLTABLENAME.m_pfn_qglVertex3fv(path[i]);
 194
 195         __QGLTABLENAME.m_pfn_qglEnd();
 196
 197         if(m_bShowExtra)
 198         {
 199                 // +mars
 200                 // ahhh -- a nice C&P job :)
 201                 // for the bounding box stuff
 202                 __QGLTABLENAME.m_pfn_qglColor4f(0.25f, 0.75f, 0.75f, 1.0f);
 203
 204                 __QGLTABLENAME.m_pfn_qglTranslatef( 16.0f, 16.0f, 28.0f );
 205
 206                 __QGLTABLENAME.m_pfn_qglBegin( GL_LINE_STRIP );
 207
 208                 int i;
 209                 for ( i = 0; i < nPathCount; i++ )
 210                         __QGLTABLENAME.m_pfn_qglVertex3fv( path[i] );
 211
 212                 __QGLTABLENAME.m_pfn_qglEnd();
 213
 214         // ---------------
 215
 216                 __QGLTABLENAME.m_pfn_qglTranslatef( -16.0f, -16.0f, -28.0f );   // back to where we were
 217                 __QGLTABLENAME.m_pfn_qglTranslatef( -16.0f, 16.0f, 28.0f );             // move to new postion
 218
 219                 __QGLTABLENAME.m_pfn_qglBegin( GL_LINE_STRIP );
 220
 221                         for ( i = 0; i < nPathCount; i++ )
 222                                 __QGLTABLENAME.m_pfn_qglVertex3fv( path[i] );
 223
 224                 __QGLTABLENAME.m_pfn_qglEnd();
 225
 226         // --------------
 227
 228                 __QGLTABLENAME.m_pfn_qglTranslatef( 16.0f, -16.0f, -28.0f );            // back to where we were
 229                 __QGLTABLENAME.m_pfn_qglTranslatef( 16.0f, -16.0f, -28.0f );            // new pos
 230
 231                 __QGLTABLENAME.m_pfn_qglBegin( GL_LINE_STRIP );
 232
 233                         for ( i = 0; i < nPathCount; i++ )
 234                                 __QGLTABLENAME.m_pfn_qglVertex3fv( path[i] );
 235
 236                 __QGLTABLENAME.m_pfn_qglEnd();
 237
 238         // ----------------
 239
 240                 __QGLTABLENAME.m_pfn_qglTranslatef( -16.0f, 16.0f, 28.0f );             // back to where we were
 241                 __QGLTABLENAME.m_pfn_qglTranslatef( -16.0f, -16.0f, -28.0f );           // new pos
 242
 243                 __QGLTABLENAME.m_pfn_qglBegin( GL_LINE_STRIP );
 244
 245                         for ( i = 0; i < nPathCount; i++ )
 246                                 __QGLTABLENAME.m_pfn_qglVertex3fv( path[i] );
 247
 248                 __QGLTABLENAME.m_pfn_qglEnd();
 249         }
 250         // -mars
 251
 252         __QGLTABLENAME.m_pfn_qglPopAttrib();
 253 }
 254
 255 void DBobView::Register()
 256 {
 257         __QGLTABLENAME.m_pfnHookGL2DWindow( this );
 258         __QGLTABLENAME.m_pfnHookGL3DWindow( this );
 259         m_bHooked = TRUE;
 260 }
 261
 262 void DBobView::UnRegister()
 263 {
 264         __QGLTABLENAME.m_pfnUnHookGL2DWindow( this );
 265         __QGLTABLENAME.m_pfnUnHookGL3DWindow( this );
 266         m_bHooked = FALSE;
 267 }
 268
 269 void DBobView::SetPath(vec3_t *pPath)
 270 {
 271         if(path)
 272                 delete[] path;
 273
 274         path = pPath;
 275 }
 276
 277 #define LOCAL_GRAVITY -800.0f
 278
 279 bool DBobView::CalculateTrajectory(vec3_t start, vec3_t apex, float multiplier, int points, float varGravity)
 280 {
 281         if(apex[2] <= start[2])
 282         {
 283                 SetPath(NULL);
 284                 return FALSE;
 285         }
 286         // ----think q3a actually would allow these
 287         //scrub that, coz the plugin wont :]
 288
 289         vec3_t dist, speed;
 290         VectorSubtract(apex, start, dist);
 291
 292         vec_t speed_z = (float)sqrt(-2*LOCAL_GRAVITY*dist[2]);
 293         float flight_time = -speed_z/LOCAL_GRAVITY;
 294
 295
 296         VectorScale(dist, 1/flight_time, speed);
 297         speed[2] = speed_z;
 298
 299 //      Sys_Printf("Speed: (%.4f %.4f %.4f)\n", speed[0], speed[1], speed[2]);
 300
 301         vec3_t* pPath = new vec3_t[points];
 302
 303         float interval = multiplier*flight_time/points;
 304         for(int i = 0; i < points; i++)
 305         {
 306                 float ltime = interval*i;
 307
 308                 VectorScale(speed, ltime, pPath[i]);
 309                 VectorAdd(pPath[i], start, pPath[i]);
 310
 311                 // could do this all with vectors
 312                 // vGrav = {0, 0, -800.0f}
 313                 // VectorScale(vGrav, 0.5f*ltime*ltime, vAdd);
 314                 // VectorScale(speed, ltime, pPath[i]);
 315                 // _VectorAdd(pPath[i], start, pPath[i])
 316                 // _VectorAdd(pPath[i], vAdd, pPath[i])
 317
 318                 pPath[i][2] = start[2] + (speed_z*ltime) + (varGravity*0.5f*ltime*ltime);
 319         }
 320
 321         SetPath(pPath);
 322         return TRUE;
 323 }
 324
 325 void DBobView::Begin(const char* trigger, const char *target, float multiplier, int points, float varGravity, bool bNoUpdate, bool bShowExtra)
 326 {
 327         strcpy(entTrigger, trigger);
 328         strcpy(entTarget, target);
 329
 330         fMultiplier = multiplier;
 331         fVarGravity = varGravity;
 332         nPathCount = points;
 333         m_bShowExtra = bShowExtra;
 334
 335         Register();
 336
 337         if(UpdatePath())
 338         {
 339                 if(!bNoUpdate)
 340                 {
 341                         eyes = new DListener;
 342                         eyes->parent = this;
 343                         eyes->Register();
 344                 }
 345         }
 346         else
 347         {
 348                 Sys_ERROR("Initialization Failure in DBobView::Begin");
 349                 delete this;
 350         }
 351 }
 352
 353 bool DBobView::UpdatePath()
 354 {
 355         vec3_t start, apex;
 356
 357         if(GetEntityCentre(entTrigger, start))
 358         {
 359                 if(GetEntityCentre(entTarget, apex))
 360                 {
 361                         CalculateTrajectory(start, apex, fMultiplier, nPathCount, fVarGravity);
 362                         return TRUE;
 363                 }
 364         }
 365         return FALSE;
 366 }