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Old 10-31-2009, 09:04 PM   #1 (permalink)
 
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my thesis on dropped items - L4D and L4D2

Everything you drop from your inventory becomes part of the L4Dx world. That means the physics engine can now act on it. In other words, the force from an explosion - or you shooting it or thumping it with your block button - can move it!

The most dramatic example of this is when a survivor dies. If you have time, shoot the dropped inventory (including weapons). You find you can move them. This has important implications because that means you can move things to locations of your choice.

The most difficult part is how to drop an item on purpose. Actually, even this is quite simple. All you have to do is pick up something that will replace an item you already have in your inventory. If there are no spawning points for the item in your inventory in the area (I think it's about 15 feet or so), the item in your inventory will be swapped with the one you picked up and the one you dropped will fall to the floor. The item dropped will become movable! This information is obviously only useful in survival and panic event circumstances where you have time to set things up the way you want.

Lets look at a few common examples:

Quote:
You have a Molotov cocktail and you come upon some Molotovs. No one has taken any from this bunch.
When you grab another Molotov, the one you are holding will fall to the ground. This is because none of the spawning points for Molotovs are open (suggesting that you "drop" an item before you "pick one up").
Quote:
You have a Molotov and you come upon some pipe bombs (it doesn't matter if all the spawning points are filled or not) and Molotovs. There are available spawning points for Molotovs because someone already took one.
The picked up pipe bomb moves into your inventory, but the Molotov respawns at the available spawning point. If it weren't for the empty spawning point for the Molotov, the Molotov in your inventory would have fallen to the ground.
Weapons follow the same rules, except that weapons have infinite spawning points so that you can only drop a weapon if you the one you are carrying is different from the weapons spawning points nearby (including the one you are grabbing from).

It is interesting to note that since pills and first aid packs in L4D are the only items that can occupy their respective slots, you cannot swap them and move them. BUT in L4D2 health packs can be replaced in your inventory BY DEFIBs, so guess what...?

Probably the easiest way to transport the dropped item is simply to shoot/club the item until it is far enough from the spawn point that it won't respawn if picked up. When you are far enough away, simply pick up the dropped object. The other one will fall to the ground. Move a bit. Lather, rinse, repeat. To quickly move an item a long way, simply shoot it. Molotovs are much easier to shoot than pipe bombs (L4D physics say a pipe bomb is heavier than a Molotov - sounds reasonable to me). At least Molotovs and pipe bombs don't explode when you shoot them. This begs to ask the question: "if you can't break a Molov bottle with a bullet, how is it supposed to shatter on impact?" I'll let the L4D physicists mull over THAT one...
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Old 10-31-2009, 09:08 PM   #2 (permalink)
 
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Re: my thesis on dropped items - L4D and L4D2

Keep in mind that this is time consuming, and leaves you vulnerable to the Infected.
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Old 10-31-2009, 10:06 PM   #3 (permalink)
 
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Re: my thesis on dropped items - L4D and L4D2

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Originally Posted by Mech__Warrior View Post
Keep in mind that this is time consuming, and leaves you vulnerable to the Infected.
I didn't make it clear that it is useful only in the BEGINNING of survival mode or panic event, before you throw the switch. It makes you able to stockpile things though.

Thanks for reminding me.
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Old 11-02-2009, 05:48 PM   #4 (permalink)
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Re: my thesis on dropped items - L4D and L4D2

Still though, its a interesting aspect considering the uses of the engine and gameplay. People have always pondered over how to move items, let alone its effectiveness. Good post. Since there are like a million items more in L4D2, this might be useful in certain areas or game types.

In realistic mode however, which is being billed as uber hard ("Its for people who beat portal in 10 minutes when our best play testers could only do it in 30") beyond expert difficulty, maybe this will help bridge the gap for ammo issues (if ammo is an issue in realistic mode).
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