111 lines
2.8 KiB
Text
111 lines
2.8 KiB
Text
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/***********************************************************************
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projectile_homingmissile.script
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***********************************************************************/
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object projectile_homingmissile : projectile_missile {
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void preinit();
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void init();
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void Idle();
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void destroy();
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void OnSetEnemy( entity oldEnemy, entity newEnemy );
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void UpdateFocusedTargeting();
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void vSetNewTarget( entity newTarget );
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entity vGetCurrentTarget();
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void OnUpdateTargeting();
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void OnThrustStarted();
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void syncFields();
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float spawnTime;
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};
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void projectile_homingmissile::OnThrustStarted() {
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playEffect( "fx_trail", "", 1 );
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startSound( "snd_fly", SND_WEAPON_FIRE );
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}
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void projectile_homingmissile::preinit() {
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if ( !sys.isClient() ) {
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spawnTime = sys.getTime();
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}
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}
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void projectile_homingmissile::syncFields() {
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syncBroadcast( "spawnTime" );
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}
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void projectile_homingmissile::init() {
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SetupContents();
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setState( "Idle" );
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}
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void projectile_homingmissile::destroy() {
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setEnemy( $null_entity );
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}
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void projectile_homingmissile::Idle() {
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startSound( "snd_release", SND_WEAPON_BRASS );
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}
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void projectile_homingmissile::OnSetEnemy( entity oldEnemy, entity newEnemy ) {
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if ( oldEnemy != $null_entity ) {
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oldEnemy.vStopTargetLockAlarm( self );
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}
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if ( newEnemy != $null_entity ) {
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newEnemy.vTargetLockAlarm( self );
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}
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}
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void projectile_homingmissile::UpdateFocusedTargeting() {
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}
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void projectile_homingmissile::OnUpdateTargeting() {
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entity enemy = getEnemy();
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vector enemyOrg;
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vector dir;
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if ( enemy == $null_entity ) {
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UpdateFocusedTargeting();
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return;
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}
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vector absMins = enemy.getVectorKeyWithDefault( "selection_mins", enemy.getMins() );
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vector absMaxs = enemy.getVectorKeyWithDefault( "selection_maxs", enemy.getMaxs() );
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absMins = sys.toWorldSpace( absMins, enemy );
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absMaxs = sys.toWorldSpace( absMaxs, enemy );
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enemyOrg = ( absMins + absMaxs ) * 0.5f ;
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// lead ahead of the enemy a bit - calculate the time it'll take to get there and adjust
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vector myCurrentVel = getLinearVelocity();
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float myCurrentSpeed = sys.vecLength( myCurrentVel );
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vector delta = enemyOrg - getWorldOrigin(); // adjust for own origin
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float distance = sys.vecLength( delta );
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float approxClosingTime = 1;
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if ( myCurrentSpeed > 0.0001f ) {
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approxClosingTime = distance / myCurrentSpeed;
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}
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// estimate where the enemy will be at that time
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vector enemyCurrentVel = enemy.getLinearVelocity();
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enemyOrg += enemyCurrentVel * approxClosingTime;
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delta = enemyOrg - getWorldOrigin();
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dir = sys.vecNormalize( delta );
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turnTowards( dir, 180.f );
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}
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void projectile_homingmissile::vSetNewTarget( entity newTarget ) {
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setEnemy( newTarget );
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}
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entity projectile_homingmissile::vGetCurrentTarget() {
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return getEnemy();
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}
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