47 lines
1.7 KiB
Markdown
47 lines
1.7 KiB
Markdown
# C1 46 - ChangeTerrainAttributes (by server)
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## Is sent when
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The server wants to alter the terrain attributes of a map at runtime.
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## Causes the following actions on the client side
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The client updates the terrain attributes on its side.
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## Structure
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| Index | Length | Data Type | Value | Description |
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|-------|--------|-----------|-------|-------------|
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| 0 | 1 | Byte | 0xC1 | [Packet type](PacketTypes.md) |
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| 1 | 1 | Byte | | Packet header - length of the packet |
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| 2 | 1 | Byte | 0x46 | Packet header - packet type identifier |
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| 3 | 1 | Boolean | false | Type |
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| 4 | 1 | TerrainAttributeType | | Attribute |
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| 5 | 1 | Boolean | | RemoveAttribute; When this is true, the attribute is removed on the client side. If it's false, then the attribute is added. |
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| 6 | 1 | Byte | | AreaCount |
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| 7 | TerrainArea.Length * AreaCount | Array of TerrainArea | | Areas |
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### TerrainArea Structure
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Defines the area which should be changed.
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Length: 4 Bytes
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| Index | Length | Data Type | Value | Description |
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|-------|--------|-----------|-------|-------------|
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| 0 | 1 | Byte | | StartX |
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| 1 | 1 | Byte | | StartY |
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| 2 | 1 | Byte | | EndX |
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| 3 | 1 | Byte | | EndY |
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### TerrainAttributeType Enum
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Defines the attribute which should be set/unset. It's a Flags enumeration.
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| Value | Name | Description |
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|-------|------|-------------|
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| 1 | Safezone | The coordinate is a safezone. |
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| 2 | Character | The coordinate is occupied by a character. |
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| 4 | Blocked | The coordinate is blocked and can't be passed by a character. |
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| 8 | NoGround | The coordinate is blocked, because there is no ground and can't be passed by a character. |
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| 16 | Water | The coordinate is blocked by water and can't be passed by a character. | |