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update MinecraftVersions.md

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@ -6,19 +6,20 @@ The file is a huge json object, see below:
```json ```json
{ {
"<Version ID>": { "<Version id>": {
"name": "<Version Name>", "name": "<Version Name>",
"mapping": <Id>, "mapping": "<Version id or custom mapping>",
"protocolId": <Protocol Id>, "protocol_id": "<Protocol id>"
} }
} }
``` ```
The json key is custom one, normally the same as the protocol id (if so, you can omit the versionId field).
Because Mojang needed to change the versionIds in 1.16.4-pre1 (["New network protocol scheme, with a high bit (bit 30) set for snapshots. The protocol version will increase by 1 for each snapshot, but full releases may keep the same protocol version as the previous full release in cases where the network protocols are compatible"](https://www.minecraft.net/en-us/article/minecraft-1-16-4-pre-release-1)), The json key is custom one, normally the same as the protocol id (if so, you can omit the versionId field). Because Mojang needed to change the versionIds in
I needed to change the version Ids. The version id will now increment for each version/snapshot, but only if the protocol id changes too. 1.16.4-pre1 (["New network protocol scheme, with a high bit (bit 30) set for snapshots. The protocol version will increase by 1 for each snapshot, but full releases may keep the same protocol version as the previous full release in cases where the network protocols are compatible"](https://www.minecraft.net/en-us/article/minecraft-1-16-4-pre-release-1)), I needed to change the version Ids. The version id will now increment for each version/snapshot, but only if the protocol id changes too. Used
Used for sorting and even more important: Multi protocol support. The number simply is bigger if the version is newer. for sorting and even more important: Multi protocol support. The number simply is bigger if the version is newer.
## Example ## Example
```json ```json
{ {
"753": { "753": {
@ -29,10 +30,21 @@ Used for sorting and even more important: Multi protocol support. The number sim
``` ```
## Mapping ## Mapping
Mapping can be an int, if so the version mapping of the corresponding version will be used. If one packet is added, removed, shifted, or simply it's id changes,
you need to provide the full packet mapping. The id depends on the order.
Mapping can be an int, if so the version mapping of the corresponding version will be used. If one packet is added, removed, shifted, or simply it's id changes, you need to provide the full packet mapping. The id depends on the order.
```json
{
"mapping": {
"c2s": [
"PLAY_TELEPORT_CONFIRM"
],
"s2c": [
"PLAY_ENTITY_OBJECT_SPAWN"
]
}
}
```
--- ---
Note: Do not check for protocolIds (especially in EntityMetaData or Packets), this data is not reliable (because snapshot ids are that much higher)! Use version Ids. Note: Do not check for `protocol_id` (especially in EntityMetaData or Packets), this data is not reliable (because snapshot ids are that much higher)! Use version Ids.