bool CanPlaceAt(Entity thing, DVector2 position) {
var dist = (position - entity.position).sqrMagnitude;
var prefabSize = (DReal)thing.collisionRadiusNumerator / thing.collisionRadiusDenominator;
var minDist = (prefabSize + entity.collisionRadius) * (prefabSize + entity.collisionRadius);
var maxDist = buildRadius * buildRadius;
return minDist < dist && dist < maxDist &&
ComSat.FindEntityWithinRadius(position, prefabSize) == null &&
buildMan.CanBuildAt(position, prefabSize);
}
void TickUpdate()
{
ComSat.Trace(this, "TickUpdate");
if(!powerSink.poweredOn) {
target = null;
audio.Stop();
return;
}
if(!ComSat.EntityExists(target)) {
// Magic. Destroyed GameObjects compare against null.
// Explicitly set to null to avoid keeping it around.
target = null;
audio.Stop();
// Search for victims.
target = ComSat.FindEntityWithinRadius(entity.position, attackRange, entity.team);
if(target != null) {
audio.Play();
}
} else {
var dp = target.position - entity.position;
DReal targetTurretAngle;
var projectileProjectile = projectilePrefab.GetComponent<Projectile>();
if(projectileProjectile != null && powerSink.Powered()) {
var aimSpot = Utility.PredictShot(entity.position, projectileProjectile.initialSpeed,
target.position, target.velocity);
targetTurretAngle = DReal.Mod(DVector2.ToAngle(aimSpot - entity.position) - entity.rotation, DReal.TwoPI);
} else {
targetTurretAngle = DReal.Mod(DVector2.ToAngle(dp) - entity.rotation, DReal.TwoPI);
}
// Turn turret to point at target.
TurnTurret(targetTurretAngle);
// Fire when pointing the gun at the target.
if(targetTurretAngle == turretRotation) {
Fire();
}
// Stop shooting when out of range.
if(dp.sqrMagnitude >= attackRange * attackRange) {
audio.Stop();
target = null;
}
}
if(fireDelay > 0) {
fireDelay -= ComSat.tickRate;
}
}
