voxelman.blockentity.utils source code

1 /**
2 Copyright: Copyright (c) 2016 Andrey Penechko.
3 License: $(WEB boost.org/LICENSE_1_0.txt, Boost License 1.0).
4 Authors: Andrey Penechko.
5 */
6 module voxelman.blockentity.utils;
7 
8 import std.experimental.logger;
9 import voxelman.container.buffer;
10 import voxelman.math;
11 import voxelman.block.utils;
12 import voxelman.core.config;
13 import voxelman.core.events;
14 import voxelman.world.storage.coordinates;
15 import voxelman.world.storage.worldbox;
16 import voxelman.core.chunkmesh;
17 
18 import voxelman.blockentity.blockentityaccess;
19 import voxelman.blockentity.blockentitydata;
20 
21 enum BLOCK_ENTITY_FLAG = 1 << 15;
22 enum BLOCK_INDEX_MASK = (1 << 15) - 1;
23 
24 bool isBlockEntity(BlockId blockId)
25 {
26 	enum n = BlockId.sizeof*8 - 1;
27 	return blockId >> n; // highest bit
28 }
29 
30 ushort blockIndexFromBlockId(BlockId blockId) {
31 	return blockId & BLOCK_INDEX_MASK;
32 }
33 
34 BlockId blockIdFromBlockIndex(ushort blockIndex) {
35 	return blockIndex | BLOCK_ENTITY_FLAG;
36 }
37 
38 
39 alias BlockEntityMeshhandler = void function(
40 	Buffer!MeshVertex[] output,
41 	BlockEntityData data,
42 	ubyte[3] color,
43 	ubyte sides,
44 	//ivec3 worldPos,
45 	ivec3 chunkPos,
46 	ivec3 entityPos);
47 
48 alias SolidityHandler = Solidity function(Side side, ivec3 chunkPos, ivec3 entityPos, BlockEntityData data);
49 alias EntityBoxHandler = WorldBox function(BlockWorldPos bwp, BlockEntityData data);
50 alias EntityDebugHandler = void function(BlockWorldPos bwp, BlockEntityData data);
51 WorldBox nullBoxHandler(BlockWorldPos bwp, BlockEntityData data)
52 {
53 	return WorldBox(bwp.xyz, ivec3(1,1,1), cast(ushort)bwp.w);
54 }
55 
56 void nullBlockEntityMeshhandler(
57 	Buffer!MeshVertex[] output, BlockEntityData data,
58 	ubyte[3] color, ubyte sides, //ivec3 worldPos,
59 	ivec3 chunkPos, ivec3 entityPos) {}
60 
61 Solidity nullSolidityHandler(Side side, ivec3 chunkPos, ivec3 entityPos, BlockEntityData data) {
62 	return Solidity.solid;
63 }
64 
65 void nullDebugHandler(BlockWorldPos, BlockEntityData) {}
66 
67 struct BlockEntityInfo
68 {
69 	string name;
70 	BlockEntityMeshhandler meshHandler = &nullBlockEntityMeshhandler;
71 	SolidityHandler sideSolidity = &nullSolidityHandler;
72 	EntityBoxHandler boxHandler = &nullBoxHandler;
73 	EntityDebugHandler debugHandler = &nullDebugHandler;
74 	ubyte[3] color;
75 	//bool isVisible = true;
76 	size_t id;
77 }
78 BlockEntityInfo unknownBlockEntity = BlockEntityInfo("Unknown");
79 
80 struct BlockEntityInfoTable
81 {
82 	immutable(BlockEntityInfo)[] blockEntityInfos;
83 	size_t length() {return blockEntityInfos.length; }
84 	BlockEntityInfo opIndex(ushort blockEntityId) {
85 		blockEntityId = blockEntityId;
86 		if (blockEntityId >= blockEntityInfos.length)
87 			return unknownBlockEntity;
88 		return blockEntityInfos[blockEntityId];
89 	}
90 }