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Script:Files:script/projectiles/homingmissile.script - Revision history
2026-04-07T18:27:45Z
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Wizz at 09:52, 5 November 2007
2007-11-05T09:52:10Z
<p></p>
<p><b>New page</b></p><div> <span style="color:green">/***********************************************************************</span><br />
<br />
<span style="color:green">projectile_homingmissile.script</span><br />
<br />
<span style="color:green">***********************************************************************/</span><br />
<br />
<span style="color:blue">object</span> [[ScriptClass:projectile_homingmissile|projectile_homingmissile]] : [[ScriptClass:projectile_missile|projectile_missile]] {<br />
<span style="color:blue">void</span> preinit();<br />
<span style="color:blue">void</span> init();<br />
<span style="color:blue">void</span> Idle();<br />
<span style="color:blue">void</span> destroy();<br />
<span style="color:blue">void</span> OnSetEnemy( <span style="color:blue">entity</span> oldEnemy, <span style="color:blue">entity</span> newEnemy );<br />
<span style="color:blue">void</span> UpdateFocusedTargeting();<br />
<span style="color:blue">void</span> vSetNewTarget( <span style="color:blue">entity</span> newTarget );<br />
<span style="color:blue">entity</span> vGetCurrentTarget();<br />
<br />
<span style="color:blue">void</span> OnUpdateTargeting();<br />
<span style="color:blue">void</span> OnThrustStarted();<br />
<br />
<span style="color:blue">void</span> syncFields();<br />
<br />
<span style="color:blue">float</span> spawnTime;<br />
};<br />
<br />
<span style="color:blue">void</span> [[ScriptClass:projectile_homingmissile|projectile_homingmissile]]::OnThrustStarted() {<br />
[[ScriptEvent:playEffect|playEffect]]( <span style="color:brown">"fx_trail"</span>, <span style="color:brown">""</span>, 1 );<br />
[[ScriptEvent:startSound|startSound]]( <span style="color:brown">"snd_fly"</span>, SND_WEAPON_FIRE );<br />
}<br />
<br />
<span style="color:blue">void</span> [[ScriptClass:projectile_homingmissile|projectile_homingmissile]]::preinit() {<br />
<span style="color:blue">if</span> ( !sys.[[ScriptEvent:isClient|isClient]]() ) {<br />
spawnTime = sys.[[ScriptEvent:getTime|getTime]]();<br />
}<br />
}<br />
<br />
<span style="color:blue">void</span> [[ScriptClass:projectile_homingmissile|projectile_homingmissile]]::syncFields() {<br />
[[ScriptEvent:syncBroadcast|syncBroadcast]]( <span style="color:brown">"spawnTime"</span> );<br />
}<br />
<br />
<span style="color:blue">void</span> [[ScriptClass:projectile_homingmissile|projectile_homingmissile]]::init() {<br />
SetupContents();<br />
<br />
[[ScriptEvent:setState|setState]]( <span style="color:brown">"Idle"</span> );<br />
}<br />
<br />
<span style="color:blue">void</span> [[ScriptClass:projectile_homingmissile|projectile_homingmissile]]::destroy() {<br />
[[ScriptEvent:setEnemy|setEnemy]]( <span style="color:blue">$null_entity</span> );<br />
}<br />
<br />
<span style="color:blue">void</span> [[ScriptClass:projectile_homingmissile|projectile_homingmissile]]::Idle() {<br />
[[ScriptEvent:startSound|startSound]]( <span style="color:brown">"snd_release"</span>, SND_WEAPON_BRASS );<br />
}<br />
<br />
<span style="color:blue">void</span> [[ScriptClass:projectile_homingmissile|projectile_homingmissile]]::OnSetEnemy( <span style="color:blue">entity</span> oldEnemy, <span style="color:blue">entity</span> newEnemy ) {<br />
<span style="color:blue">if</span> ( oldEnemy != <span style="color:blue">$null_entity</span> ) {<br />
oldEnemy.vStopTargetLockAlarm( <span style="color:blue">self</span> );<br />
}<br />
<br />
<span style="color:blue">if</span> ( newEnemy != <span style="color:blue">$null_entity</span> ) {<br />
newEnemy.vTargetLockAlarm( <span style="color:blue">self</span> );<br />
}<br />
}<br />
<br />
<span style="color:blue">void</span> [[ScriptClass:projectile_homingmissile|projectile_homingmissile]]::UpdateFocusedTargeting() {<br />
}<br />
<br />
<span style="color:blue">void</span> [[ScriptClass:projectile_homingmissile|projectile_homingmissile]]::OnUpdateTargeting() {<br />
<span style="color:blue">entity</span> enemy = [[ScriptEvent:getEnemy|getEnemy]]();<br />
<br />
<span style="color:blue">vector</span> enemyOrg;<br />
<span style="color:blue">vector</span> dir;<br />
<br />
<span style="color:blue">if</span> ( enemy == <span style="color:blue">$null_entity</span> ) {<br />
UpdateFocusedTargeting();<br />
<span style="color:blue">return</span>;<br />
}<br />
<br />
<span style="color:blue">vector</span> absMins = enemy.[[ScriptEvent:getVectorKeyWithDefault|getVectorKeyWithDefault]]( <span style="color:brown">"selection_mins"</span>, enemy.[[ScriptEvent:getMins|getMins]]() );<br />
<span style="color:blue">vector</span> absMaxs = enemy.[[ScriptEvent:getVectorKeyWithDefault|getVectorKeyWithDefault]]( <span style="color:brown">"selection_maxs"</span>, enemy.[[ScriptEvent:getMaxs|getMaxs]]() );<br />
absMins = sys.[[ScriptEvent:toWorldSpace|toWorldSpace]]( absMins, enemy );<br />
absMaxs = sys.[[ScriptEvent:toWorldSpace|toWorldSpace]]( absMaxs, enemy );<br />
enemyOrg = ( absMins + absMaxs ) * 0.5f ;<br />
<br />
<span style="color:green">// lead ahead of the enemy a bit - calculate the time it'll take to get there and adjust</span><br />
<span style="color:blue">vector</span> myCurrentVel = [[ScriptEvent:getLinearVelocity|getLinearVelocity]]();<br />
<span style="color:blue">float</span> myCurrentSpeed = sys.[[ScriptEvent:vecLength|vecLength]]( myCurrentVel );<br />
<span style="color:blue">vector</span> delta = enemyOrg - [[ScriptEvent:getWorldOrigin|getWorldOrigin]](); <span style="color:green">// adjust for own origin</span><br />
<span style="color:blue">float</span> distance = sys.[[ScriptEvent:vecLength|vecLength]]( delta );<br />
<span style="color:blue">float</span> approxClosingTime = 1;<br />
<span style="color:blue">if</span> ( myCurrentSpeed > 0.0001f ) {<br />
approxClosingTime = distance / myCurrentSpeed;<br />
}<br />
<br />
<span style="color:green">// estimate where the enemy will be at that time</span><br />
<span style="color:blue">vector</span> enemyCurrentVel = enemy.[[ScriptEvent:getLinearVelocity|getLinearVelocity]]();<br />
enemyOrg += enemyCurrentVel * approxClosingTime;<br />
<br />
delta = enemyOrg - [[ScriptEvent:getWorldOrigin|getWorldOrigin]]();<br />
dir = sys.[[ScriptEvent:vecNormalize|vecNormalize]]( delta );<br />
<br />
[[ScriptEvent:turnTowards|turnTowards]]( dir, 180.f );<br />
}<br />
<br />
<span style="color:blue">void</span> [[ScriptClass:projectile_homingmissile|projectile_homingmissile]]::vSetNewTarget( <span style="color:blue">entity</span> newTarget ) {<br />
[[ScriptEvent:setEnemy|setEnemy]]( newTarget );<br />
}<br />
<br />
<span style="color:blue">entity</span> [[ScriptClass:projectile_homingmissile|projectile_homingmissile]]::vGetCurrentTarget() {<br />
<span style="color:blue">return</span> [[ScriptEvent:getEnemy|getEnemy]]();<br />
}</div>
Wizz