DOOM-3-BFG

DOOM 3 BFG Edition
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AI_Vagary.cpp (5205B)

      1 /*
      2 ===========================================================================
      3 
      4 Doom 3 BFG Edition GPL Source Code
      5 Copyright (C) 1993-2012 id Software LLC, a ZeniMax Media company. 
      6 
      7 This file is part of the Doom 3 BFG Edition GPL Source Code ("Doom 3 BFG Edition Source Code").  
      8 
      9 Doom 3 BFG Edition Source Code is free software: you can redistribute it and/or modify
     10 it under the terms of the GNU General Public License as published by
     11 the Free Software Foundation, either version 3 of the License, or
     12 (at your option) any later version.
     13 
     14 Doom 3 BFG Edition Source Code is distributed in the hope that it will be useful,
     15 but WITHOUT ANY WARRANTY; without even the implied warranty of
     16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
     17 GNU General Public License for more details.
     18 
     19 You should have received a copy of the GNU General Public License
     20 along with Doom 3 BFG Edition Source Code.  If not, see <http://www.gnu.org/licenses/>.
     21 
     22 In addition, the Doom 3 BFG Edition Source Code is also subject to certain additional terms. You should have received a copy of these additional terms immediately following the terms and conditions of the GNU General Public License which accompanied the Doom 3 BFG Edition Source Code.  If not, please request a copy in writing from id Software at the address below.
     23 
     24 If you have questions concerning this license or the applicable additional terms, you may contact in writing id Software LLC, c/o ZeniMax Media Inc., Suite 120, Rockville, Maryland 20850 USA.
     25 
     26 ===========================================================================
     27 */
     28 /***********************************************************************
     29 
     30 game/ai/AI_Vagary.cpp
     31 
     32 Vagary specific AI code
     33 
     34 ***********************************************************************/
     35 
     36 #pragma hdrstop
     37 #include "../../idlib/precompiled.h"
     38 
     39 
     40 #include "../Game_local.h"
     41 
     42 class idAI_Vagary : public idAI {
     43 public:
     44 	CLASS_PROTOTYPE( idAI_Vagary );
     45 
     46 private:
     47 	void	Event_ChooseObjectToThrow( const idVec3 &mins, const idVec3 &maxs, float speed, float minDist, float offset );
     48 	void	Event_ThrowObjectAtEnemy( idEntity *ent, float speed );
     49 };
     50 
     51 const idEventDef AI_Vagary_ChooseObjectToThrow( "vagary_ChooseObjectToThrow", "vvfff", 'e' );
     52 const idEventDef AI_Vagary_ThrowObjectAtEnemy( "vagary_ThrowObjectAtEnemy", "ef" );
     53 
     54 CLASS_DECLARATION( idAI, idAI_Vagary )
     55 	EVENT( AI_Vagary_ChooseObjectToThrow,	idAI_Vagary::Event_ChooseObjectToThrow )
     56 	EVENT( AI_Vagary_ThrowObjectAtEnemy,	idAI_Vagary::Event_ThrowObjectAtEnemy )
     57 END_CLASS
     58 
     59 /*
     60 ================
     61 idAI_Vagary::Event_ChooseObjectToThrow
     62 ================
     63 */
     64 void idAI_Vagary::Event_ChooseObjectToThrow( const idVec3 &mins, const idVec3 &maxs, float speed, float minDist, float offset ) {
     65 	idEntity *	ent;
     66 	idEntity *	entityList[ MAX_GENTITIES ];
     67 	int			numListedEntities;
     68 	int			i, index;
     69 	float		dist;
     70 	idVec3		vel;
     71 	idVec3		offsetVec( 0, 0, offset );
     72 	idEntity	*enemyEnt = enemy.GetEntity();
     73 
     74 	if ( !enemyEnt ) {
     75 		idThread::ReturnEntity( NULL );
     76 		return;
     77 	}
     78 
     79 	idVec3 enemyEyePos = lastVisibleEnemyPos + lastVisibleEnemyEyeOffset;
     80 	const idBounds &myBounds = physicsObj.GetAbsBounds();
     81 	idBounds checkBounds( mins, maxs );
     82 	checkBounds.TranslateSelf( physicsObj.GetOrigin() );
     83 	numListedEntities = gameLocal.clip.EntitiesTouchingBounds( checkBounds, -1, entityList, MAX_GENTITIES );
     84 
     85 	index = gameLocal.random.RandomInt( numListedEntities );
     86 	for ( i = 0; i < numListedEntities; i++, index++ ) {
     87 		if ( index >= numListedEntities ) {
     88 			index = 0;
     89 		}
     90 		ent = entityList[ index ];
     91 		if ( !ent->IsType( idMoveable::Type ) ) {
     92 			continue;
     93 		}
     94 
     95 		if ( ent->fl.hidden ) {
     96 			// don't throw hidden objects
     97 			continue;
     98 		}
     99 
    100 		idPhysics *entPhys = ent->GetPhysics();
    101 		const idVec3 &entOrg = entPhys->GetOrigin();
    102 		dist = ( entOrg - enemyEyePos ).LengthFast();
    103 		if ( dist < minDist ) {
    104 			continue;
    105 		}
    106 
    107 		idBounds expandedBounds = myBounds.Expand( entPhys->GetBounds().GetRadius() );
    108 		if ( expandedBounds.LineIntersection( entOrg, enemyEyePos ) ) {
    109 			// ignore objects that are behind us
    110 			continue;
    111 		}
    112 
    113 		if ( PredictTrajectory( entPhys->GetOrigin() + offsetVec, enemyEyePos, speed, entPhys->GetGravity(), 
    114 			entPhys->GetClipModel(), entPhys->GetClipMask(), MAX_WORLD_SIZE, NULL, enemyEnt, ai_debugTrajectory.GetBool() ? 4000 : 0, vel ) ) {
    115 			idThread::ReturnEntity( ent );
    116             return;
    117 		}
    118 	}
    119 
    120 	idThread::ReturnEntity( NULL );
    121 }
    122 
    123 /*
    124 ================
    125 idAI_Vagary::Event_ThrowObjectAtEnemy
    126 ================
    127 */
    128 void idAI_Vagary::Event_ThrowObjectAtEnemy( idEntity *ent, float speed ) {
    129 	idVec3		vel;
    130 	idEntity	*enemyEnt;
    131 	idPhysics	*entPhys;
    132 
    133 	entPhys	= ent->GetPhysics();
    134 	enemyEnt = enemy.GetEntity();
    135 	if ( !enemyEnt ) {
    136 		vel = ( viewAxis[ 0 ] * physicsObj.GetGravityAxis() ) * speed;
    137 	} else {
    138 		PredictTrajectory( entPhys->GetOrigin(), lastVisibleEnemyPos + lastVisibleEnemyEyeOffset, speed, entPhys->GetGravity(), 
    139 			entPhys->GetClipModel(), entPhys->GetClipMask(), MAX_WORLD_SIZE, NULL, enemyEnt, ai_debugTrajectory.GetBool() ? 4000 : 0, vel );
    140 		vel *= speed;
    141 	}
    142 
    143 	entPhys->SetLinearVelocity( vel );
    144 
    145 	if ( ent->IsType( idMoveable::Type ) ) {
    146 		idMoveable *ment = static_cast<idMoveable*>( ent );
    147 		ment->EnableDamage( true, 2.5f );
    148 	}
    149 }