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SPIGOT-2221: Update and document InventoryView slot conversion

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By: md_5 <git@md-5.net>
This commit is contained in:
Bukkit/Spigot 2016-05-28 22:58:50 +10:00
parent e4ef610859
commit 45f0e39e4d
1 changed files with 54 additions and 4 deletions
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58
paper-api/src/main/java/org/bukkit/inventory/InventoryView.java
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@ -172,19 +172,69 @@ public abstract class InventoryView {
*/
public final int convertSlot(int rawSlot) {
int numInTop = getTopInventory().getSize();
// Index from the top inventory as having slots from [0,size]
if (rawSlot < numInTop) {
return rawSlot;
}
// Move down the slot index by the top size
int slot = rawSlot - numInTop;
// Creative mode players have one contiguous inventory dictated by the client
if (getPlayer().getGameMode() == GameMode.CREATIVE && getType() == InventoryType.PLAYER) {
return slot;
}
// Player crafting slots are indexed differently. The matrix is caught by the first return.
if (getType() == InventoryType.CRAFTING) {
if(slot < 4) return 39 - slot;
else slot -= 4;
/**
* Raw Slots:
*
* 5 1 2 0
* 6 3 4
* 7
* 8 45
* 9 10 11 12 13 14 15 16 17
* 18 19 20 21 22 23 24 25 26
* 27 28 29 30 31 32 33 34 35
* 36 37 38 39 40 41 42 43 44
*/
/**
* Converted Slots:
*
* 39 1 2 0
* 38 3 4
* 37
* 36 40
* 9 10 11 12 13 14 15 16 17
* 18 19 20 21 22 23 24 25 26
* 27 28 29 30 31 32 33 34 35
* 0 1 2 3 4 5 6 7 8
*/
if (slot < 4) {
// Send [5,8] to [39,36]
return 39 - slot;
} else if (slot > 39) {
// Slot lives in the extra slot section
return slot;
} else {
// Reset index so 9 -> 0
slot -= 4;
}
}
if (slot >= 27) slot -= 27;
else slot += 9;
// 27 = 36 - 9
if (slot >= 27) {
// Put into hotbar section
slot -= 27;
} else {
// Take out of hotbar section
// 9 = 36 - 27
slot += 9;
}
return slot;
}