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
|
#include "cSandSimulator.h"
#include "cWorld.h"
#include "Vector3i.h"
#include "BlockID.h"
#include "Defines.h"
#include <vector>
cSandSimulator::cSandSimulator( cWorld* a_World )
: cSimulator(a_World)
, m_Blocks(new std::vector <Vector3i *>)
, m_Buffer(new std::vector <Vector3i *>)
{
}
cSandSimulator::~cSandSimulator()
{
delete m_Buffer;
delete m_Blocks;
}
void cSandSimulator::Simulate( float a_Dt )
{
m_Buffer->clear();
std::swap( m_Blocks, m_Buffer );
for( std::vector<Vector3i *>::iterator itr = m_Buffer->begin(); itr != m_Buffer->end(); ++itr )
{
Vector3i *Pos = *itr;
char BlockID = m_World->GetBlock(Pos->x, Pos->y, Pos->z);
if(!IsAllowedBlock(BlockID))
continue;
char BottomBlock = m_World->GetBlock( Pos->x, Pos->y - 1, Pos->z );
if( IsPassable(BottomBlock) )
{
m_World->SetBlock( Pos->x, Pos->y, Pos->z, E_BLOCK_AIR, 0 );
m_World->SetBlock( Pos->x, Pos->y - 1, Pos->z, BlockID, 0 );
}
}
}
bool cSandSimulator::IsAllowedBlock( char a_BlockID )
{
return a_BlockID == E_BLOCK_SAND
|| a_BlockID == E_BLOCK_GRAVEL;
}
void cSandSimulator::AddBlock(int a_X, int a_Y, int a_Z)
{
Vector3i *Block = new Vector3i(a_X, a_Y, a_Z);
//check for duplicates
for( std::vector<Vector3i *>::iterator itr = m_Blocks->begin(); itr != m_Blocks->end(); ++itr )
{
Vector3i *Pos = *itr;
if( Pos->x == a_X && Pos->y == a_Y && Pos->z == a_Z )
return;
}
m_Blocks->push_back(Block);
}
bool cSandSimulator::IsPassable( char a_BlockID )
{
return a_BlockID == E_BLOCK_AIR
|| IsBlockWater(a_BlockID)
|| IsBlockLava(a_BlockID);
}
|
