summaryrefslogtreecommitdiffstats
path: root/src/Blocks/BlockFluid.h
blob: 1200997ff7ce9aaefd693649278c7381a3f3d12c (plain) (blame)
1
2
3
4
5
6
7
8
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
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141

#pragma once

#include "BlockHandler.h"





class cBlockFluidHandler :
	public cBlockHandler
{
	typedef cBlockHandler super;
	
public:
	cBlockFluidHandler(BLOCKTYPE a_BlockType)
		: cBlockHandler(a_BlockType)
	{

	}	
	
		
	virtual void ConvertToPickups(cItems & a_Pickups, NIBBLETYPE a_BlockMeta) override
	{
		// No pickups
	}
	
	
	virtual bool DoesIgnoreBuildCollision(void) override
	{
		return true;
	}
	
	
	virtual void Check(cChunkInterface & a_ChunkInterface, cBlockPluginInterface & a_PluginInterface, int a_RelX, int a_RelY, int a_RelZ, cChunk & a_Chunk) override
	{
		switch (m_BlockType)
		{
			case E_BLOCK_STATIONARY_LAVA:
			{
				a_Chunk.FastSetBlock(a_RelX, a_RelY, a_RelZ, E_BLOCK_LAVA, a_Chunk.GetMeta(a_RelX, a_RelY, a_RelZ));
				break;
			}
			case E_BLOCK_STATIONARY_WATER:
			{
				a_Chunk.FastSetBlock(a_RelX, a_RelY, a_RelZ, E_BLOCK_WATER, a_Chunk.GetMeta(a_RelX, a_RelY, a_RelZ));
				break;
			}
		}
		super::Check(a_ChunkInterface, a_PluginInterface, a_RelX, a_RelY, a_RelZ, a_Chunk);
	}
} ;





class cBlockLavaHandler :
	public cBlockFluidHandler
{
	typedef cBlockFluidHandler super;
public:

	cBlockLavaHandler(BLOCKTYPE a_BlockType) :
		super(a_BlockType)
	{
	}
	
	
	/// Called to tick the block
	virtual void OnUpdate(cChunkInterface & cChunkInterface, cWorldInterface & a_WorldInterface, cBlockPluginInterface & a_PluginInterface, cChunk & a_Chunk, int a_RelX, int a_RelY, int a_RelZ) override
	{
		if (a_Chunk.GetWorld()->ShouldLavaSpawnFire())
		{
			// Try to start up to 5 fires:
			for (int i = 0; i < 5; i++)
			{
				TryStartFireNear(a_RelX, a_RelY, a_RelZ, a_Chunk);
			}
		}
	}
	
	
	/// Tries to start a fire near the lava at given coords. Returns true if fire started.
	static bool TryStartFireNear(int a_RelX, int a_RelY, int a_RelZ, cChunk & a_Chunk)
	{
		// Pick a block next to this lava block:
		int rnd = a_Chunk.GetWorld()->GetTickRandomNumber(cChunkDef::NumBlocks * 8) / 7;
		int x = (rnd % 3) - 1;         // -1 .. 1
		int y = ((rnd / 4) % 4) - 1;   // -1 .. 2
		int z = ((rnd / 16) % 3) - 1;  // -1 .. 1
		
		// Check if it's fuel:
		BLOCKTYPE BlockType;
		if (
			((a_RelY + y < 0) || (a_RelY + y > cChunkDef::Height)) ||
			(
				!a_Chunk.UnboundedRelGetBlockType(a_RelX + x, a_RelY + y, a_RelZ + z, BlockType) ||
				!cFireSimulator::IsFuel(BlockType)
			)
		)
		{
			return false;
		}
		
		// Try to set it on fire:
		static struct
		{
			int x, y, z;
		} CrossCoords[] =
		{
			{-1,  0,  0},
			{ 1,  0,  0},
			{ 0, -1,  0},
			{ 0,  1,  0},
			{ 0,  0, -1},
			{ 0,  0,  1},
		} ;
		int RelX = a_RelX + x;
		int RelY = a_RelY + y;
		int RelZ = a_RelZ + z;
		for (size_t i = 0; i < ARRAYCOUNT(CrossCoords); i++)
		{
			if (
				((RelY + CrossCoords[i].y >= 0) && (RelY + CrossCoords[i].y <= cChunkDef::Height)) &&
				a_Chunk.UnboundedRelGetBlockType(RelX + CrossCoords[i].x, RelY + CrossCoords[i].y, RelZ + CrossCoords[i].z, BlockType) &&
				(BlockType == E_BLOCK_AIR)
			)
			{
				// This is an air block next to a fuel next to lava, light it up:
				a_Chunk.UnboundedRelSetBlock(RelX + CrossCoords[i].x, RelY + CrossCoords[i].y, RelZ + CrossCoords[i].z, E_BLOCK_FIRE, 0);
				return true;
			}
		}  // for i - CrossCoords[]
		return false;
	}
} ;