public void DrawObjects()
{
foreach (KeyValuePair <Int32, List <PhysicalObject> > CurrList in cObjGroups)
{
foreach (PhysicalObject CurrObj in CurrList.Value)
{
CurrObj.Draw();
}
}
return;
}
public void UpdateGraphicsDevice(GraphicsDevice GraphDev)
{
cGraphDev = GraphDev;
foreach (KeyValuePair <Int32, List <PhysicalObject> > CurrList in cObjGroups)
{
foreach (PhysicalObject CurrObj in CurrList.Value)
{
CurrObj.UpdateGaphicsDevice(cGraphDev);
}
}
return;
}
public void UpdateObjects(GameTime CurrTime)
{
List <Int32> aIdxToRemove = new List <int>();
List <PhysicalObject> CurrList;
List <Int32> aIdxList;
PhysicalObject CurrObj;
Int32 nCtr;
//Get the keys in a separatex collection so updates to key list won't cause problems
aIdxList = new List <int>(cObjGroups.Keys);
//Loop through all of hte lists calling for updates
foreach (Int32 CurrKey in aIdxList)
{
CurrList = cObjGroups[CurrKey];
aIdxToRemove.Clear();
//Loop through all objects in this list
for (nCtr = 0; nCtr < CurrList.Count; nCtr++)
{
CurrObj = CurrList[nCtr];
if (CurrObj.Update(CurrTime) == false)
{
aIdxToRemove.Add(nCtr); //Save this index to be purged later
}
}
//Any Updates that return false must be removed,go backwards to avoid removed keys
//messing up the indexing
for (nCtr = aIdxToRemove.Count - 1; nCtr >= 0; nCtr--)
{
CurrList.RemoveAt(aIdxToRemove[nCtr]);
}
}
return;
}
public override bool Update(GameTime CurrTime)
{
Vector2 vNewPos;
int nCtr, nBestTargetID = -1;
float nBestTargetDist = 0, nCurrDist;
List <PhysicalObject> aTargetList = cObjMgr[cnTargetGroupID];
bool bRetVal = true;
base.Update(CurrTime);
if (ctCreated == -1) //Just created, mark the time
{
ctCreated = CurrTime.TotalGameTime.TotalMilliseconds;
}
switch (ceProjType)
{
case eProjectileType_t.Tracking:
//Find a target to track
for (nCtr = 0; nCtr < aTargetList.Count; nCtr++)
{
nCurrDist = MGMath.SquaredDistanceBetweenPoints(CenterPoint, aTargetList[nCtr].CenterPoint);
if (nBestTargetID == -1) //No target picked
{
nBestTargetID = nCtr;
nBestTargetDist = nCurrDist;
}
else if (nCurrDist < nBestTargetDist)
{
nBestTargetID = nCtr;
nBestTargetDist = nCurrDist;
}
}
if (nBestTargetID != -1) //Found a valid target, steer toward it
{
nCurrDist = AITools.SteerTowardTarget(CenterPoint, aTargetList[nBestTargetID].CenterPoint, ObjectRotation, cnMaxTurn);
//Set the new movement direction, but don't change the speed
SetMovement(nCurrDist, cnMaxSpeed);
}
if (CurrTime.TotalGameTime.TotalMilliseconds - ctCreated > ctTimeToLive)
{
//Lived its full life, time to pop
bRetVal = false;
}
break;
case eProjectileType_t.Straight:
default:
//No logic, just flies straight
if (cGraphDev.Viewport.Width < CenterPoint.X + Width) //remove it when off screen
{
bRetVal = false;
}
if (cGraphDev.Viewport.Height < CenterPoint.Y + Height) //remove it when off screen
{
bRetVal = false;
}
if (CenterPoint.X < -1 * Width)
{
bRetVal = false;
}
if (CenterPoint.Y < -1 * Height)
{
bRetVal = false;
}
break;
}
//Look for collisions with all possible targets
foreach (PhysicalObject CurrObj in aTargetList)
{
if (CurrObj.TestCollision(this) == true)
{
//Hit a target! (tell it that it was hit)
CurrObj.ReportCollision(CurrTime, this);
bRetVal = false;
break;
}
}
//Apply the current speed
vNewPos = CenterPoint;
vNewPos.X += Speed.X;
vNewPos.Y += Speed.Y;
CenterPoint = vNewPos;
if ((ParticleHandler != null) && (bRetVal == false))
{
//Missile is expiring, throw some particles
for (nCtr = 0; nCtr < 10; nCtr++)
{
ParticleHandler.AddParticle(new DustParticle(CenterPoint, Rand, cGraphDev, cImgAtlas, "spaceEffects_008.png"));
}
}
//Return True to keep this alive, false to have it removed
return(bRetVal);
}
