This game works best in 1.8.9.


UPDATE: 08/02/2015

Since so many people have been having problems with .rar files, I have recompressed it as a .zip instead.

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In honor of the upcoming "Combat Update", I've create a simple item pickup system for use in a PvP or other adventure type game. When a player walks over a floating item, it will disappear for a customizable amount of time before returning, and the item will be added to the player’s inventory or an effect will be applied.

This can be expanded to include a number of items and effects or changed to create single-use pickups. This example includes the following pre-programmed pickups:
> Bow with 10 arrows (added to inventory)
> Iron Sword (added to inventory)
> Iron Chest Plate (auto-equipped)
> Instant Health (applied effect)
> Invisibility - 10 seconds (applied effect)
> Speed - 10 seconds (applied effect)


Instructions:
To use this system as-is, copy the "command block tower" to a chunk in your map that will remain loaded throughout the game. Please note: due to the order in which Minecraft calculates simultaneously executed commands, the “tower” CANNOT be rotated. Wherever you want to have an item on your map, use the provided commands (in the command block under the example item) to spawn the item in place. The command block used to summon the item can be destroyed once the item is where you want it.

Adding your own items:
Each level of the command block tower is dedicated to a single item/weapon type, but will work for multiple instances of an item (i.e. if you have more than one iron sword on a map, you do not need two separate "iron sword" levels).

To add more item types, simply copy the top-most layer and paste it directly on top of the tower. In each command block, increment the item name wherever present (i.e. the top most level is currently "item6", the next level will be "item7"). You will also need to modify the two clock command blocks to increase the “fill” command’s range to include the new layer(s).