Happy to report that I’ve got it working! 
I had to reformat my overall ‘shootBullet’ function.
If anyone is interested, this is the final product - I’ll be cleaning it up a bit, but nevertheless here it is:
[lua]
local function shootBullet()
PlayerBulletCount = PlayerBulletCount + 1
print(“PlayerBulletCount increased by 1”)
local pt = mathapi.rotateAboutPoint( {x=user_turret.x,y=user_turret.y-60}, user_turret, user_turret.rotation - 90 )
local emitterName = “E” … (#BEmitters + 1) – This will concatenate the current number of enemy tanks to the end of the string, resulting in E1 for the first, E2 for the second, etc.
local Emitter = display.newGroup()
local bullet = display.newGroup()
--bullet attributes
bullet.body = loader:createSpriteFromSHDocument(“Weapon5ex”, “GameFX”, “LevelAssets.pshs”);
bullet.body.x = pt.x; bullet.body.y = pt.y;
physics.addBody( bullet.body , “dynamic”, { friction= 0, bounce= 1.0, density= .6, radius= 7, filter = bulletCollisionFilter} );
bullet.body:scale(.6,.6);
bullet.body.class = “bullet”
bullet.body.isBullet = true
bullet.body.rotation = user_turret.rotation + 90
bullet.body:applyForce( pt.x - user_turret.x, pt.y - user_turret.y, user_turret.x, user_turret.y )
bullet.body.class = “EnemyTank”
– Bullet Emitter
Particles.CreateEmitter(emitterName, 0, 0, 0, true, true) – Uses the base name (generated dynamically with each tank)
bullet.emitter = Particles.GetEmitter(emitterName)
Particles.CreateParticleType (“BulletSTrail”,
{
imagePath = “gfx/smoke01.png”,
imageWidth = 12,
imageHeight = 12,
directionVariation = 45,
velocityVariation = 50,
rotationVariation = 360,
rotationChange = 30,
useEmitterRotation = false,
alphaStart = 0.5,
fadeInSpeed = 1.5,
fadeOutSpeed = .5,
fadeOutDelay = 100,
scaleStart = 0.5,
scaleVariation = 0.5,
scaleInSpeed = 1.0,
emissionShape = 1,
emissionRadius = 1,
killOutsideScreen = true,
lifeTime = 200,
blendMode = “subtract”,
} )
Particles.AttachParticleType(emitterName , “BulletSTrail”, 32, 99999,0)
local R = 153
local G = 153
local B = 153
Particles.SetParticleProperty(“BulletSTrail”, “colorStart”, {R,G,B})
local function attachBEmitters()
if BEmitters then
print( "Number of Emitters: " … tostring( #BEmitters ) )
if #BEmitters~=0 then
Particles.SetEmitterTarget( emitterName, bullet.body, true, 0, 0, 0 )
Particles.StartEmitter(emitterName)
end
end
return Emitter
end
for i=1,1 do
BEmitters[#BEmitters + 1] = attachBEmitters()
end
timer.performWithDelay(10, attachBEmitters)
local onPlayerBulletCollision = function(self, event)
local parentObject = PlayerBullets[self._index]
if event.phase == “began” then
Particles.StopEmitter(“PBEmitter”)
Particles.StopEmitter(“ETBEmitter”)
Particles.StopEmitter(emitterName)
display.remove(bullet.emitter)
--table.remove(BEmitters)
print(“bullet hit something”)
--[[
if event.other.class == “Player” or event.other.class == “Uturret”
then
print(" Hit PlayerTank “)
bullet1:removeSelf()
print(” Projectile Removed ")
removePlayer()
end–]]
if event.other.class == “bullet”
then
display.remove(self)
print(" two bullets collided … bullets removed “)
end
elseif event.phase == “ended” then
print(“PlayerBulletCount decreased by 1”)
PlayerBulletCount = PlayerBulletCount - 1
print(“EnemyBulletCount increased by 1”)
EnemyBulletCount = EnemyBulletCount - 1
display.remove(self)
print(” Projectile Removed ")
end
return true
end
bullet.body.collision = onPlayerBulletCollision
bullet.body:addEventListener(“collision”, bullet.body)
bullet:insert( bullet.body )
--bullet:insert( bullet.emitter )
camera:add(bullet, 6, false)
table.insert(PlayerBullets, bullet) – This adds the tank to the PlayerBullets table and increments the #PlayerBullets by one
bullet.body._index = table.indexOf(PlayerBullets, bullet)
bullet.emitter._index = bullet.body._index
return bullet
end
[/lua]
Cheers!
-Saer