Initial import.

1 files changed, 447 insertions, 0 deletions

diff --git a/src/cgame/cg_scanner.c b/src/cgame/cg_scanner.c
new file mode 100644
index 0000000..f4c86de
--- /dev/null
+++ b/src/cgame/cg_scanner.c
@@ -0,0 +1,447 @@
+/*
+===========================================================================
+Copyright (C) 2000-2009 Darklegion Development
+
+This file is part of Tremulous.
+
+Tremulous is free software; you can redistribute it
+and/or modify it under the terms of the GNU General Public License as
+published by the Free Software Foundation; either version 2 of the License,
+or (at your option) any later version.
+
+Tremulous is distributed in the hope that it will be
+useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with Tremulous; if not, write to the Free Software
+Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+===========================================================================
+*/
+
+
+#include "cg_local.h"
+
+static entityPos_t entityPositions;
+
+#define HUMAN_SCANNER_UPDATE_PERIOD 25
+
+/*
+=============
+CG_UpdateEntityPositions
+
+Update this client's perception of entity positions
+=============
+*/
+void CG_UpdateEntityPositions( void )
+{
+  centity_t *cent = NULL;
+  int       i;
+
+  if( cg.predictedPlayerState.stats[ STAT_TEAM ] == TEAM_HUMANS )
+  {
+    if( entityPositions.lastUpdateTime + HUMAN_SCANNER_UPDATE_PERIOD > cg.time )
+      return;
+  }
+
+  VectorCopy( cg.refdef.vieworg, entityPositions.origin );
+  VectorCopy( cg.refdefViewAngles, entityPositions.vangles );
+  entityPositions.lastUpdateTime = cg.time;
+
+  entityPositions.numAlienBuildables = 0;
+  entityPositions.numHumanBuildables = 0;
+  entityPositions.numAlienClients = 0;
+  entityPositions.numHumanClients = 0;
+
+  for( i = 0; i < cg.snap->numEntities; i++ )
+  {
+    cent = &cg_entities[ cg.snap->entities[ i ].number ];
+     //make adv basilisk invisble to human helmet if invisble
+    if( cent->currentState.eType == ET_BUILDABLE &&
+     !( cent->currentState.eFlags & EF_DEAD ))
+    {
+      // add to list of item positions (for creep)
+      if( cent->currentState.modelindex2 == TEAM_ALIENS )
+      {
+        VectorCopy( cent->lerpOrigin, entityPositions.alienBuildablePos[
+            entityPositions.numAlienBuildables ] );
+        entityPositions.alienBuildableTimes[
+            entityPositions.numAlienBuildables ] = cent->miscTime;
+
+        if( entityPositions.numAlienBuildables < MAX_GENTITIES )
+          entityPositions.numAlienBuildables++;
+      }
+      else if( cent->currentState.modelindex2 == TEAM_HUMANS )
+      {
+        VectorCopy( cent->lerpOrigin, entityPositions.humanBuildablePos[
+            entityPositions.numHumanBuildables ] );
+
+        if( entityPositions.numHumanBuildables < MAX_GENTITIES )
+          entityPositions.numHumanBuildables++;
+      }
+    }
+    else if( cent->currentState.eType == ET_PLAYER  )
+    {
+      int team = cent->currentState.misc & 0x00FF;
+    //make adv basilisk invisble to radar if invisble
+      if( team == TEAM_ALIENS && !(cent->invisible ) )
+      {
+        VectorCopy( cent->lerpOrigin, entityPositions.alienClientPos[
+            entityPositions.numAlienClients ] );
+
+        if( entityPositions.numAlienClients < MAX_CLIENTS )
+          entityPositions.numAlienClients++;
+      }
+      else if( team == TEAM_HUMANS )
+      {
+        VectorCopy( cent->lerpOrigin, entityPositions.humanClientPos[
+            entityPositions.numHumanClients ] );
+
+        if( entityPositions.numHumanClients < MAX_CLIENTS )
+          entityPositions.numHumanClients++;
+      }
+    }
+  }
+}
+
+#define STALKWIDTH  (2.0f * cgDC.aspectScale)
+#define BLIPX       (14.0f * cgDC.aspectScale)
+#define BLIPY       6.0f
+#define FAR_ALPHA   0.8f
+#define NEAR_ALPHA  1.2f
+
+/*
+=============
+CG_DrawBlips
+
+Draw blips and stalks for the human scanner
+=============
+*/
+static void CG_DrawBlips( rectDef_t *rect, vec3_t origin, vec4_t colour )
+{
+  vec3_t  drawOrigin;
+  vec3_t  up = { 0, 0, 1 };
+  float   alphaMod = 1.0f;
+  float   timeFractionSinceRefresh = 1.0f -( (float)( cg.time - entityPositions.lastUpdateTime ) / (float)HUMAN_SCANNER_UPDATE_PERIOD );
+  vec4_t  localColour;
+
+  Vector4Copy( colour, localColour );
+
+  RotatePointAroundVector( drawOrigin, up, origin, -entityPositions.vangles[ 1 ] - 90 );
+  drawOrigin[ 0 ] /= ( 2 * HELMET_RANGE / rect->w );
+  drawOrigin[ 1 ] /= ( 2 * HELMET_RANGE / rect->h );
+  drawOrigin[ 2 ] /= ( 2 * HELMET_RANGE / rect->w );
+
+  alphaMod = FAR_ALPHA +
+    ( ( drawOrigin[ 1 ] + ( rect->h / 2.0f ) ) / rect->h ) * ( NEAR_ALPHA - FAR_ALPHA );
+
+  localColour[ 3 ] *= alphaMod;
+  localColour[ 3 ] *= ( 0.5f + ( timeFractionSinceRefresh * 0.5f ) );
+
+  if( localColour[ 3 ] > 1.0f )
+    localColour[ 3 ] = 1.0f;
+  else if( localColour[ 3 ] < 0.0f )
+    localColour[ 3 ] = 0.0f;
+
+  trap_R_SetColor( localColour );
+
+  if( drawOrigin[ 2 ] > 0 )
+    CG_DrawPic( rect->x + ( rect->w / 2 ) - ( STALKWIDTH / 2 ) - drawOrigin[ 0 ],
+                rect->y + ( rect->h / 2 ) + drawOrigin[ 1 ] - drawOrigin[ 2 ],
+                STALKWIDTH, drawOrigin[ 2 ], cgs.media.scannerLineShader );
+  else
+    CG_DrawPic( rect->x + ( rect->w / 2 ) - ( STALKWIDTH / 2 ) - drawOrigin[ 0 ],
+                rect->y + ( rect->h / 2 ) + drawOrigin[ 1 ],
+                STALKWIDTH, -drawOrigin[ 2 ], cgs.media.scannerLineShader );
+
+  CG_DrawPic( rect->x + ( rect->w / 2 ) - ( BLIPX / 2 ) - drawOrigin[ 0 ],
+              rect->y + ( rect->h / 2 ) - ( BLIPY / 2 ) + drawOrigin[ 1 ] - drawOrigin[ 2 ],
+              BLIPX, BLIPY, cgs.media.scannerBlipShader );
+  trap_R_SetColor( NULL );
+}
+
+/*
+=============
+CG_DrawBlipsPlayer
+
+Draw blips and stalks for the human scanner
+=============
+*/
+static void CG_DrawBlipsPlayer( rectDef_t *rect, vec3_t origin, vec4_t colour )
+{
+  vec3_t  drawOrigin;
+  vec3_t  up = { 0, 0, 1 };
+  float   alphaMod = 1.0f;
+  float   timeFractionSinceRefresh = 1.0f -( (float)( cg.time - entityPositions.lastUpdateTime ) / (float)HUMAN_SCANNER_UPDATE_PERIOD );
+  vec4_t  localColour;
+
+  Vector4Copy( colour, localColour );
+
+  RotatePointAroundVector( drawOrigin, up, origin, -entityPositions.vangles[ 1 ] - 90 );
+  drawOrigin[ 0 ] /= ( 2 * HELMET_RANGE / rect->w );
+  drawOrigin[ 1 ] /= ( 2 * HELMET_RANGE / rect->h );
+  drawOrigin[ 2 ] /= ( 2 * HELMET_RANGE / rect->w );
+
+  alphaMod = FAR_ALPHA +
+    ( ( drawOrigin[ 1 ] + ( rect->h / 2.0f ) ) / rect->h ) * ( NEAR_ALPHA - FAR_ALPHA );
+
+  localColour[ 3 ] *= alphaMod;
+  localColour[ 3 ] *= ( 0.5f + ( timeFractionSinceRefresh * 0.5f ) );
+
+  if( localColour[ 3 ] > 1.0f )
+    localColour[ 3 ] = 1.0f;
+  else if( localColour[ 3 ] < 0.0f )
+    localColour[ 3 ] = 0.0f;
+
+  trap_R_SetColor( localColour );
+
+  if( drawOrigin[ 2 ] > 0 )
+    CG_DrawPic( rect->x + ( rect->w / 2 ) - ( STALKWIDTH / 2 ) - drawOrigin[ 0 ],
+                rect->y + ( rect->h / 2 ) + drawOrigin[ 1 ] - drawOrigin[ 2 ],
+                STALKWIDTH, drawOrigin[ 2 ], cgs.media.scannerLineShader );
+  else
+    CG_DrawPic( rect->x + ( rect->w / 2 ) - ( STALKWIDTH / 2 ) - drawOrigin[ 0 ],
+                rect->y + ( rect->h / 2 ) + drawOrigin[ 1 ],
+                STALKWIDTH, -drawOrigin[ 2 ], cgs.media.scannerLineShader );
+
+  CG_DrawPic( rect->x + ( rect->w / 2 ) - ( BLIPX / 2 ) - drawOrigin[ 0 ],
+              rect->y + ( rect->h / 2 ) - ( BLIPY / 2 ) + drawOrigin[ 1 ] - drawOrigin[ 2 ],
+              BLIPX, BLIPY, cgs.media.scannerBlipShaderPlayer );
+  trap_R_SetColor( NULL );
+}
+
+#define BLIPX2  (24.0f * cgDC.aspectScale)
+#define BLIPY2  24.0f
+
+/*
+=============
+CG_DrawDir
+
+Draw dot marking the direction to an enemy
+=============
+*/
+static void CG_DrawDir( rectDef_t *rect, vec3_t origin, vec4_t colour )
+{
+  vec3_t  drawOrigin;
+  vec3_t  noZOrigin;
+  vec3_t  normal, antinormal, normalDiff;
+  vec3_t  view, noZview;
+  vec3_t  up  = { 0.0f, 0.0f,   1.0f };
+  vec3_t  top = { 0.0f, -1.0f,  0.0f };
+  float   angle;
+  playerState_t *ps = &cg.snap->ps;
+
+  BG_GetClientNormal( ps, normal );
+
+  AngleVectors( entityPositions.vangles, view, NULL, NULL );
+
+  ProjectPointOnPlane( noZOrigin, origin, normal );
+  ProjectPointOnPlane( noZview, view, normal );
+  VectorNormalize( noZOrigin );
+  VectorNormalize( noZview );
+
+  //calculate the angle between the images of the blip and the view
+  angle = RAD2DEG( acos( DotProduct( noZOrigin, noZview ) ) );
+  CrossProduct( noZOrigin, noZview, antinormal );
+  VectorNormalize( antinormal );
+
+  //decide which way to rotate
+  VectorSubtract( normal, antinormal, normalDiff );
+  if( VectorLength( normalDiff ) < 1.0f )
+    angle = 360.0f - angle;
+
+  RotatePointAroundVector( drawOrigin, up, top, angle );
+
+  trap_R_SetColor( colour );
+  CG_DrawPic( rect->x + ( rect->w / 2 ) - ( BLIPX2 / 2 ) - drawOrigin[ 0 ] * ( rect->w / 2 ),
+              rect->y + ( rect->h / 2 ) - ( BLIPY2 / 2 ) + drawOrigin[ 1 ] * ( rect->h / 2 ),
+              BLIPX2, BLIPY2, cgs.media.scannerBlipShader );
+  trap_R_SetColor( NULL );
+}
+
+/*
+=============
+CG_DrawDirPlayer
+
+Draw dot marking the direction to an enemy
+=============
+*/
+static void CG_DrawDirPlayer( rectDef_t *rect, vec3_t origin, vec4_t colour )
+{
+  vec3_t  drawOrigin;
+  vec3_t  noZOrigin;
+  vec3_t  normal, antinormal, normalDiff;
+  vec3_t  view, noZview;
+  vec3_t  up  = { 0.0f, 0.0f,   1.0f };
+  vec3_t  top = { 0.0f, -1.0f,  0.0f };
+  float   angle;
+  playerState_t *ps = &cg.snap->ps;
+
+  BG_GetClientNormal( ps, normal );
+
+  AngleVectors( entityPositions.vangles, view, NULL, NULL );
+
+  ProjectPointOnPlane( noZOrigin, origin, normal );
+  ProjectPointOnPlane( noZview, view, normal );
+  VectorNormalize( noZOrigin );
+  VectorNormalize( noZview );
+
+  //calculate the angle between the images of the blip and the view
+  angle = RAD2DEG( acos( DotProduct( noZOrigin, noZview ) ) );
+  CrossProduct( noZOrigin, noZview, antinormal );
+  VectorNormalize( antinormal );
+
+  //decide which way to rotate
+  VectorSubtract( normal, antinormal, normalDiff );
+  if( VectorLength( normalDiff ) < 1.0f )
+    angle = 360.0f - angle;
+
+  RotatePointAroundVector( drawOrigin, up, top, angle );
+
+  trap_R_SetColor( colour );
+  CG_DrawPic( rect->x + ( rect->w / 2 ) - ( BLIPX2 / 2 ) - drawOrigin[ 0 ] * ( rect->w / 2 ),
+              rect->y + ( rect->h / 2 ) - ( BLIPY2 / 2 ) + drawOrigin[ 1 ] * ( rect->h / 2 ),
+              BLIPX2, BLIPY2, cgs.media.scannerBlipShaderPlayer );
+  trap_R_SetColor( NULL );
+}
+
+/*
+=============
+CG_AlienSense
+=============
+*/
+void CG_AlienSense( rectDef_t *rect )
+{
+  int     i;
+  vec3_t  origin;
+  vec3_t  relOrigin;
+  vec4_t  buildableb = { 0.0f, 0.5f, 1.0f, 0.75f };
+  vec4_t  client     = { 0.0f, 0.9f, 1.0f, 0.75f };
+  VectorCopy( entityPositions.origin, origin );
+  
+  //draw human buildables
+  for( i = 0; i < entityPositions.numHumanBuildables; i++ )
+  {
+    VectorClear( relOrigin );
+    VectorSubtract( entityPositions.humanBuildablePos[ i ], origin, relOrigin );
+
+    if( VectorLength( relOrigin ) < ALIENSENSE_RANGE )
+      CG_DrawDir( rect, relOrigin, buildableb );
+  }
+
+  //draw human clients
+  for( i = 0; i < entityPositions.numHumanClients; i++ )
+  {
+    VectorClear( relOrigin );
+    VectorSubtract( entityPositions.humanClientPos[ i ], origin, relOrigin );
+
+    if( VectorLength( relOrigin ) < ALIENSENSE_RANGE )
+      CG_DrawDirPlayer( rect, relOrigin, client );
+  }
+}
+
+/*
+=============
+CG_Scanner
+=============
+*/
+void CG_Scanner( rectDef_t *rect, qhandle_t shader, vec4_t color )
+{
+  int     i;
+  vec3_t  origin;
+  vec3_t  relOrigin;
+  vec4_t  hIabove = { 0.0f, 1.0f, 1.0f, 0.75f };
+  vec4_t  hIbelow = { 0.0f, 0.8f, 0.8f, 0.60f };
+  vec4_t  aIabove = { 1.0f, 0.0f, 0.0f, 0.75f };
+  vec4_t  aIbelow = { 0.8f, 0.0f, 0.0f, 0.60f };
+
+  VectorCopy( entityPositions.origin, origin );
+
+  //draw human buildables below scanner plane
+  for( i = 0; i < entityPositions.numHumanBuildables; i++ )
+  {
+    VectorClear( relOrigin );
+    VectorSubtract( entityPositions.humanBuildablePos[ i ], origin, relOrigin );
+
+    if( VectorLength( relOrigin ) < HELMET_RANGE && ( relOrigin[ 2 ] < 0 ) )
+      CG_DrawBlips( rect, relOrigin, hIbelow );
+  }
+
+  //draw alien buildables below scanner plane
+  for( i = 0; i < entityPositions.numAlienBuildables; i++ )
+  {
+    VectorClear( relOrigin );
+    VectorSubtract( entityPositions.alienBuildablePos[ i ], origin, relOrigin );
+
+    if( VectorLength( relOrigin ) < HELMET_RANGE && ( relOrigin[ 2 ] < 0 ) )
+      CG_DrawBlips( rect, relOrigin, aIbelow );
+  }
+
+  //draw human clients below scanner plane
+  for( i = 0; i < entityPositions.numHumanClients; i++ )
+  {
+    VectorClear( relOrigin );
+    VectorSubtract( entityPositions.humanClientPos[ i ], origin, relOrigin );
+
+    if( VectorLength( relOrigin ) < HELMET_RANGE && ( relOrigin[ 2 ] < 0 ) )
+      CG_DrawBlipsPlayer( rect, relOrigin, hIbelow );
+  }
+
+  //draw alien clients below scanner plane
+  for( i = 0; i < entityPositions.numAlienClients; i++ )
+  {
+    VectorClear( relOrigin );
+    VectorSubtract( entityPositions.alienClientPos[ i ], origin, relOrigin );
+
+    if( VectorLength( relOrigin ) < HELMET_RANGE && ( relOrigin[ 2 ] < 0 ) )
+      CG_DrawBlipsPlayer( rect, relOrigin, aIbelow );
+  }
+
+  if( !cg_disableScannerPlane.integer )
+  {
+    trap_R_SetColor( color );
+    CG_DrawPic( rect->x, rect->y, rect->w, rect->h, shader );
+    trap_R_SetColor( NULL );
+  }
+
+  //draw human buildables above scanner plane
+  for( i = 0; i < entityPositions.numHumanBuildables; i++ )
+  {
+    VectorClear( relOrigin );
+    VectorSubtract( entityPositions.humanBuildablePos[ i ], origin, relOrigin );
+
+    if( VectorLength( relOrigin ) < HELMET_RANGE && ( relOrigin[ 2 ] > 0 ) )
+      CG_DrawBlips( rect, relOrigin, hIabove );
+  }
+
+  //draw alien buildables above scanner plane
+  for( i = 0; i < entityPositions.numAlienBuildables; i++ )
+  {
+    VectorClear( relOrigin );
+    VectorSubtract( entityPositions.alienBuildablePos[ i ], origin, relOrigin );
+
+    if( VectorLength( relOrigin ) < HELMET_RANGE && ( relOrigin[ 2 ] > 0 ) )
+      CG_DrawBlips( rect, relOrigin, aIabove );
+  }
+
+  //draw human clients above scanner plane
+  for( i = 0; i < entityPositions.numHumanClients; i++ )
+  {
+    VectorClear( relOrigin );
+    VectorSubtract( entityPositions.humanClientPos[ i ], origin, relOrigin );
+
+    if( VectorLength( relOrigin ) < HELMET_RANGE && ( relOrigin[ 2 ] > 0 ) )
+      CG_DrawBlipsPlayer( rect, relOrigin, hIabove );
+  }
+
+  //draw alien clients above scanner plane
+  for( i = 0; i < entityPositions.numAlienClients; i++ )
+  {
+    VectorClear( relOrigin );
+    VectorSubtract( entityPositions.alienClientPos[ i ], origin, relOrigin );
+
+    if( VectorLength( relOrigin ) < HELMET_RANGE && ( relOrigin[ 2 ] > 0 ) )
+      CG_DrawBlipsPlayer( rect, relOrigin, aIabove );
+  }
+}