mirror of https://github.com/ZDoom/gzdoom.git
406 lines
11 KiB
Plaintext
406 lines
11 KiB
Plaintext
struct VisStyle
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{
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bool Invert;
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float Alpha;
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int RenderStyle;
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}
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class Inventory : Actor native
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{
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const BLINKTHRESHOLD = (4*32);
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native Actor Owner; // Who owns self item? NULL if it's still a pickup.
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native int Amount; // Amount of item self instance has
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native int MaxAmount; // Max amount of item self instance can have
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native int InterHubAmount; // Amount of item that can be kept between hubs or levels
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native int RespawnTics; // Tics from pickup time to respawn time
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native TextureID Icon; // Icon to show on status bar or HUD
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native int DropTime; // Countdown after dropping
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native Class<Actor> SpawnPointClass; // For respawning like Heretic's mace
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native Class<Actor> PickupFlash; // actor to spawn as pickup flash
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native Sound PickupSound;
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native bool bPickupGood;
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native bool bCreateCopyMoved;
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native bool bInitEffectFailed;
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Default
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{
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Inventory.Amount 1;
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Inventory.MaxAmount 1;
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Inventory.InterHubAmount 1;
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Inventory.UseSound "misc/invuse";
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Inventory.PickupSound "misc/i_pkup";
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Inventory.PickupMessage "$TXT_DEFAULTPICKUPMSG";
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}
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virtual native color GetBlend ();
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virtual native bool HandlePickup(Inventory item);
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virtual native Inventory CreateCopy(Actor other);
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virtual native bool SpecialDropAction (Actor dropper);
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virtual native String PickupMessage();
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virtual native bool ShouldStay();
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virtual native void PlayPickupSound(Actor user);
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native bool DoRespawn();
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native bool GoAway();
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native void GoAwayAndDie();
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native void BecomeItem();
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native void BecomePickup();
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// In this case the caller function is more than a simple wrapper around the virtual method and
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// is what must be actually called to pick up an item.
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native bool, Actor CallTryPickup(Actor toucher);
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native bool CallStateChain (Actor actor, State state);
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States(Actor, Overlay, Weapon, Item)
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{
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HideDoomish:
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TNT1 A 1050;
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TNT1 A 0 A_RestoreSpecialPosition;
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TNT1 A 1 A_RestoreSpecialDoomThing;
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Stop;
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HideSpecial:
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ACLO E 1400;
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ACLO A 0 A_RestoreSpecialPosition;
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ACLO A 4 A_RestoreSpecialThing1;
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ACLO BABCBCDC 4;
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ACLO D 4 A_RestoreSpecialThing2;
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Stop;
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Held:
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TNT1 A -1;
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Stop;
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HoldAndDestroy:
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TNT1 A 1;
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Stop;
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}
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// These are regular functions for the item itself.
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//---------------------------------------------------------------------------
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//
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// PROC A_RestoreSpecialThing1
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//
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// Make a special thing visible again.
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//
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//---------------------------------------------------------------------------
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void A_RestoreSpecialThing1()
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{
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bInvisible = false;
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if (DoRespawn ())
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{
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A_PlaySound ("misc/spawn", CHAN_VOICE);
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}
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}
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//---------------------------------------------------------------------------
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//
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// PROC A_RestoreSpecialThing2
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//
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//---------------------------------------------------------------------------
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void A_RestoreSpecialThing2()
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{
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bSpecial = true;
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if (!Default.bNoGravity)
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{
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bNoGravity = false;
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}
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SetState (SpawnState);
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}
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//---------------------------------------------------------------------------
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//
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// PROC A_RestoreSpecialDoomThing
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//
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//---------------------------------------------------------------------------
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void A_RestoreSpecialDoomThing()
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{
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bInvisible = false;
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bSpecial = true;
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if (!Default.bNoGravity)
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{
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bNoGravity = false;
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}
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if (DoRespawn ())
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{
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SetState (SpawnState);
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A_PlaySound ("misc/spawn", CHAN_VOICE);
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Spawn ("ItemFog", Pos, ALLOW_REPLACE);
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}
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}
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//===========================================================================
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//
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// AInventory :: CallHandlePickup
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//
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// Runs all HandlePickup methods in the chain
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//
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//===========================================================================
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private bool CallHandlePickup(Inventory item)
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{
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let me = self;
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while (me != null)
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{
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if (me.HandlePickup(item)) return true;
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me = me.Inv;
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}
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return false;
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}
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//===========================================================================
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//
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// AInventory :: TryPickup
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//
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//===========================================================================
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virtual protected bool TryPickup (in out Actor toucher)
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{
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Actor newtoucher = toucher; // in case changed by the powerup
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// If HandlePickup() returns true, it will set the IF_PICKUPGOOD flag
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// to indicate that self item has been picked up. If the item cannot be
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// picked up, then it leaves the flag cleared.
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bPickupGood = false;
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if (toucher.Inv != NULL && toucher.Inv.CallHandlePickup (self))
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{
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// Let something else the player is holding intercept the pickup.
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if (!bPickupGood)
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{
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return false;
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}
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bPickupGood = false;
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GoAwayAndDie ();
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}
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else if (MaxAmount > 0)
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{
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// Add the item to the inventory. It is not already there, or HandlePickup
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// would have already taken care of it.
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let copy = CreateCopy (toucher);
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if (copy == NULL)
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{
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return false;
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}
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// Some powerups cannot activate absolutely, for
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// example, PowerMorph; fail the pickup if so.
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if (copy.bInitEffectFailed)
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{
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if (copy != self) copy.Destroy();
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else bInitEffectFailed;
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return false;
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}
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// Handle owner-changing powerups
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if (copy.bCreateCopyMoved)
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{
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newtoucher = copy.Owner;
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copy.Owner = NULL;
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bCreateCopyMoved = false;
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}
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// Continue onwards with the rest
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copy.AttachToOwner (newtoucher);
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if (bAutoActivate)
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{
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if (copy.Use (true))
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{
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if (--copy.Amount <= 0)
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{
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copy.bSpecial = false;
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copy.SetStateLabel ("HoldAndDestroy");
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}
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}
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}
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}
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else if (bAutoActivate)
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{
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// Special case: If an item's MaxAmount is 0, you can still pick it
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// up if it is autoactivate-able.
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// The item is placed in the inventory just long enough to be used.
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toucher.AddInventory(self);
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bool usegood = Use(true);
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toucher.RemoveInventory(self);
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if (usegood)
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{
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GoAwayAndDie();
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}
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else
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{
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return false;
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}
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}
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return true;
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}
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//===========================================================================
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//
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// AInventory :: TryPickupRestricted
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//
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//===========================================================================
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virtual bool TryPickupRestricted (in out Actor toucher)
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{
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return false;
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}
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//===========================================================================
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//
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// AInventory :: AttachToOwner
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//
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//===========================================================================
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virtual void AttachToOwner (Actor other)
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{
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BecomeItem ();
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other.AddInventory (self);
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}
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//===========================================================================
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//
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// AInventory :: DetachFromOwner
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//
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// Performs any special work needed when the item leaves an inventory,
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// either through destruction or becoming a pickup.
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//
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//===========================================================================
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virtual void DetachFromOwner ()
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{
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}
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//===========================================================================
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//
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// AInventory::CreateTossable
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//
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// Creates a copy of the item suitable for dropping. If this actor embodies
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// only one item, then it is tossed out itself. Otherwise, the count drops
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// by one and a new item with an amount of 1 is spawned.
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//
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//===========================================================================
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virtual Inventory CreateTossable ()
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{
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// If self actor lacks a SpawnState, don't drop it. (e.g. A base weapon
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// like the fist can't be dropped because you'll never see it.)
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if (SpawnState == GetDefaultByType("Actor").SpawnState || SpawnState == NULL)
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{
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return NULL;
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}
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if (bUndroppable || bUntossable || Owner == NULL || Amount <= 0)
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{
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return NULL;
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}
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if (Amount == 1 && !bKeepDepleted)
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{
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BecomePickup ();
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DropTime = 30;
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bSpecial = bSolid = false;
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return self;
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}
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let copy = Inventory(Spawn (GetClass(), Owner.Pos, NO_REPLACE));
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if (copy != NULL)
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{
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copy.MaxAmount = MaxAmount;
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copy.Amount = 1;
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copy.DropTime = 30;
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copy.bSpecial = copy.bSolid = false;
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Amount--;
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}
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return copy;
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}
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//===========================================================================
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//
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// AInventory :: DepleteOrDestroy
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//
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// If the item is depleted, just change its amount to 0, otherwise it's destroyed.
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//
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//===========================================================================
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virtual void DepleteOrDestroy ()
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{
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// If it's not ammo or an internal armor, destroy it.
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// Ammo needs to stick around, even when it's zero for the benefit
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// of the weapons that use it and to maintain the maximum ammo
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// amounts a backpack might have given.
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// Armor shouldn't be removed because they only work properly when
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// they are the last items in the inventory.
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if (bKeepDepleted)
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{
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Amount = 0;
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}
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else
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{
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Destroy();
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}
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}
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//===========================================================================
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//
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// AInventory :: Travelled
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//
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// Called when an item in somebody's inventory is carried over to another
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// map, in case it needs to do special reinitialization.
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//
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//===========================================================================
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virtual void Travelled() {}
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//===========================================================================
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//
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// AInventory :: DoEffect
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//
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// Handles any effect an item might apply to its owner
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// Normally only used by subclasses of Powerup
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//
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//===========================================================================
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virtual void DoEffect() {}
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virtual bool Use (bool pickup) { return false; }
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virtual double GetSpeedFactor() { return 1; }
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virtual bool GetNoTeleportFreeze() { return false; }
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virtual void ModifyDamage(int damage, Name damageType, out int newdamage, bool passive) {}
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virtual void AlterWeaponSprite(VisStyle vis, in out int changed) {}
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virtual void OwnerDied() {}
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//===========================================================================
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//
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// AInventory :: DrawPowerup
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//
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// Gives self item a chance to draw a special status indicator on the screen.
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// Returns false if it didn't draw anything.
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//
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//===========================================================================
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virtual bool DrawPowerup(int x, int y) { return false; }
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//===========================================================================
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//
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// AInventory :: AbsorbDamage
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//
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// Allows inventory items (primarily armor) to reduce the amount of damage
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// taken. Damage is the amount of damage that would be done without armor,
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// and newdamage is the amount that should be done after the armor absorbs
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// it.
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//
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//===========================================================================
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virtual void AbsorbDamage (int damage, Name damageType, out int newdamage) {}
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}
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class DehackedPickup : Inventory native
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{
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}
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class FakeInventory : Inventory native
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{
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native bool Respawnable;
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}
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