/// <summary>
/// initializes the collider, id, amount and vp_Toss component of a pickup
/// (vp_Toss is what moves the pickup in a nice bouncy arc when dropped).
/// </summary>
protected virtual vp_Toss InitPickup(GameObject pickup, int units, int id)
{
Collider[] cs = pickup.GetComponentsInChildren <Collider>();
foreach (Collider c in cs)
{
if (c.isTrigger)
{
Collider cc = c;
vp_Timer.In(1, delegate()
{
if (cc != null)
{
cc.enabled = true;
}
});
}
else
{
c.enabled = false;
}
}
// NOTE: in the case of throwing weapons (e.g. grenades), 2 vp_ItemPickup
// components may be present on the pickup gameobject. the first is for
// the grenade unit (ammo) type and the second is for the 'grenade thrower'
// weapon. to account for this case, there's some special logic to initing
// the components of a pickup prefab:
// fetch all pickup components on the prefab
vp_ItemPickup[] ips = pickup.GetComponentsInChildren <vp_ItemPickup>();
if (ips.Length == 0)
{
return(null); // abort if no pickup components
}
// iterate through all pickup components on this prefab (usually only one)
for (int v = 0; v < ips.Length; v++)
{
if (ips[v] == null)
{
if (v == 0)
{
return(null); // abort if first pickup component is null
}
continue; // skip if the second or later component is null
}
ips[v].ID = id + v; // id of first component will be 'id', the rest will be incremented from that
if (v == 0)
{
ips[v].Amount = units; // only the first pickup component can have a count, the rest will be zero.
}
// IMPORTANT: for grenades, the first vp_ItemPickup component must be for the unit, and the second for the throwing weapon
else
{
ips[v].Amount = 0;
}
// handle edge cases where ammo pickups end up empty - by canceling the item drop
if (ips[v].ItemTypeObject is vp_UnitType && (units == 0))
{
return(null);
}
vp_GlobalEvent <vp_ItemPickup> .Send("RegisterPickup", ips[v]); // this only has effect in multiplayer. NOTE: we must register all pickup
// components on the transform (grenade throwers as well as grenade units)
}
// make sure the pickup has a toss component and return it
vp_Toss toss = pickup.GetComponent <vp_Toss>();
if (toss == null)
{
toss = pickup.AddComponent <vp_Toss>();
}
return(toss);
}
/// <summary>
/// internal method for handling all aspects of dropping any item type.
/// NOTE: in multiplayer, this only gets run on the master, which in turn
/// triggers 'MPClientDropItem' on clients
/// </summary>
protected virtual bool TryDropItemInternal(vp_ItemType itemType, Vector3 direction, int units = 0, int id = 0)
{
//Debug.Log("TryDropItemInternal: " + itemType + ", " + units);
if (!vp_Gameplay.IsMaster)
{
return(false);
}
// fetch pickup prefab of the item type
GameObject prefab = GetPickupPrefab(itemType, units);
if (prefab == null)
{
return(false);
}
// try to remove item records or units from the inventory
if (!TryRemoveItem(itemType, units, id))
{
return(false);
}
// keep track of the number of item drop attempts for circular distribution and max cap
UpdateDropCount();
// abort if we can't drop any more items at once
if (m_ItemDropsThisFrame >= MaxDrops)
{
return(false);
}
// spawn a pickup
GameObject pickup = SpawnPickup(
prefab,
transform.position // position of inventory owner
+ (Vector3.up * SpawnHeight) // plus a height offset
+ (direction * SpawnDistance) // plus a little bit away from body of inventory holder
);
if (pickup == null)
{
return(false);
}
// in the UFPS multiplayer add-on, every pickup must be assigned a unique id on
// spawn / startup (+ the id feature is reserved for the vp_MPPickupManager system)
if (vp_Gameplay.IsMultiplayer)
{
id = vp_Utility.UniqueID;
}
// initialize the pickup with a collision timer, units, id and a toss component
vp_Toss toss = InitPickup(pickup, units, id);
if (toss == null)
{
Object.Destroy(pickup);
return(false);
}
// item drop success! play drop sound
TryPlayDropSound();
// offset direction based on how many items we have thrown this frame, so as
// to not throw items inside each other
direction = GetCircleDirection(direction);
// toss the pickup away from the owner
// the first 8 items will be tossed to 'm_DestDistance'. after that,
// 75% of the initial distance will be added every 8 items, causing
// large amounts of items to be arranged in concentric rings
float additionalDistance = (((int)((m_ItemDropsThisFrame - 1) / 8)) * (TossDistance * 0.75f));
float targetYaw = Random.Range(-180, 180);
Vector3 finalPosition = toss.Toss(pickup.transform.position, targetYaw, direction, (TossDistance + additionalDistance), !DisableBob, !DisableSpin);
//Debug.Log("item drops: " + m_ItemDropsThisFrame + ", additional: " + additionalDistance);
// notify master object
vp_ItemPickup itemPickup = pickup.GetComponentInChildren <vp_ItemPickup>();
if (itemPickup != null)
{
vp_GlobalEvent <object[]> .Send("TransmitDropItem", new object[] { itemType.name, finalPosition, targetYaw, transform.root, itemPickup.ID, itemPickup.Amount });
}
return(true);
}
/// <summary>
/// forces a multiplayer client to drop an item (remotely triggered by
/// the master in multiplayer)
/// </summary>
public virtual void MPClientDropItem(string itemTypeName, Vector3 targetPosition, float targetYaw, int id, int units)
{
vp_ItemType itemType;
if (!m_SceneItemTypesByName.TryGetValue(itemTypeName, out itemType))
{
return;
}
if (itemType == null)
{
return;
}
if (itemType is vp_UnitType)
{
TryRemoveItem(itemType, units);
}
else
{
TryRemoveItem(itemType);
}
// fetch pickup prefab of the item type
GameObject prefab = GetPickupPrefab(itemType, units);
if (prefab == null)
{
return;
}
// spawn a pickup
GameObject pickup = SpawnPickup(
prefab,
transform.position // position of inventory owner
+ (Vector3.up * SpawnHeight) // plus a height offset
// plus offset in the direction of the target position (but at the original height)
+ vp_3DUtility.HorizontalVector((targetPosition - transform.position).normalized * SpawnDistance)
);
if (pickup == null)
{
return;
}
// initialize the pickup with a collision timer, a toss component,
// and the units and id as specified by master
vp_Toss toss = InitPickup(pickup, units, id);
if (toss == null)
{
Object.Destroy(pickup);
return;
}
// toss the pickup to the specified position - without local collision
// detection - which is assumed to have been already taken care of on
// the master
toss.Toss(pickup.transform.position, targetPosition, targetYaw, !DisableBob, !DisableSpin);
// play sound
TryPlayDropSound();
}
