153 lines
4.5 KiB
C++
153 lines
4.5 KiB
C++
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#include "Globals.h" // NOTE: MSVC stupidness requires this to be the same across all modules
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#include "Piston.h"
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#include "Redstone.h"
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#include "ChunkDef.h"
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#include "Pickup.h"
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#include "Item.h"
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#include "Root.h"
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#include "ClientHandle.h"
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#include "World.h"
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#include "BlockID.h"
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#include "Server.h"
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#include "blocks/BlockHandler.h"
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extern bool g_BlockPistonBreakable[];
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#define AddDir( x, y, z, dir, amount ) switch(dir) { case 0: (y)-=(amount); break; case 1: (y)+=(amount); break;\
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case 2: (z)-=(amount); break; case 3: (z)+=(amount); break;\
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case 4: (x)-=(amount); break; case 5: (x)+=(amount); break; }
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cPiston::cPiston( cWorld* a_World )
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:m_World ( a_World )
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{
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}
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unsigned short cPiston::FirstPassthroughBlock( int pistonX, int pistonY, int pistonZ, char pistonmeta ) {
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unsigned short ret;
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pistonmeta &= 7;
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if(pistonmeta >= 6) { // just in case, it shouldn't happen but if it would, it'd case inf loop
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printf("cPiston::FirstPassthroughBlock - piston has invalid meta data!\n");
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return 9001;
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}
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char currBlock;
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for( ret = 0; ret < 24; ret++ ) { // push up to 24 blocks
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AddDir( pistonX, pistonY, pistonZ, pistonmeta, 1 )
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currBlock = m_World->GetBlock( pistonX, pistonY, pistonZ );
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if(currBlock == E_BLOCK_BEDROCK || currBlock == E_BLOCK_OBSIDIAN || currBlock == E_BLOCK_PISTON_EXTENSION ) {return 9001;}
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if(g_BlockPistonBreakable[currBlock]) {return ret;}
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}
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return 9001;
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}
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void cPiston::ExtendPiston( int pistx, int pisty, int pistz )
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{
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char pistonBlock = m_World->GetBlock( pistx, pisty, pistz );
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char pistonMeta = m_World->GetBlockMeta( pistx, pisty, pistz );
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char isSticky = (char)(pistonBlock == E_BLOCK_STICKY_PISTON) * 8;
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bool recalc = false;
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if ( (pistonMeta & 0x8) == 0x0 ) // only extend if piston is not already extended
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{
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unsigned short dist = FirstPassthroughBlock(pistx, pisty, pistz, pistonMeta);
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if (dist > 9000) return; // too many blocks
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AddDir( pistx, pisty, pistz, pistonMeta & 7, dist+1 )
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BLOCKTYPE currBlock = m_World->GetBlock (pistx, pisty, pistz);
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NIBBLETYPE currMeta = m_World->GetBlockMeta(pistx, pisty, pistz);
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if (currBlock != E_BLOCK_AIR)
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{
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cBlockHandler * Handler = BlockHandler(currBlock);
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if(Handler->DropOnUnsuitable())
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{
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Handler->DropBlock(m_World, pistx, pisty, pistz);
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}
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recalc = true;
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}
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int oldx = pistx, oldy = pisty, oldz = pistz;
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char currBlockMeta;
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for (int i = dist + 1; i>0; i--)
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{
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AddDir(pistx, pisty, pistz, pistonMeta & 7, -1)
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currBlock = m_World->GetBlock(pistx, pisty, pistz);
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currBlockMeta = m_World->GetBlockMeta(pistx, pisty, pistz);
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m_World->SetBlock( oldx, oldy, oldz, currBlock, currBlockMeta);
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oldx = pistx;
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oldy = pisty;
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oldz = pistz;
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}
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m_World->BroadcastBlockAction(pistx, pisty, pistz, 0, pistonMeta, E_BLOCK_PISTON);
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m_World->FastSetBlock( pistx, pisty, pistz, pistonBlock, pistonMeta | 0x8 );
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int extx = pistx;
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int exty = pisty;
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int extz = pistz;
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AddDir(extx, exty, extz, pistonMeta & 7, 1)
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m_World->SetBlock(extx, exty, extz, E_BLOCK_PISTON_EXTENSION, isSticky + pistonMeta & 7);
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if (recalc)
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{
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cRedstone Redstone(m_World);
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Redstone.ChangeRedstone(extx, exty, extz, false); // recalculate redstone around current device
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Redstone.ChangeRedstone(pistx, pisty, pistz, false); // recalculate redstone around current device
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}
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}
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}
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void cPiston::RetractPiston( int pistx, int pisty, int pistz )
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{
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char pistonBlock = m_World->GetBlock( pistx, pisty, pistz );
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char pistonMeta = m_World->GetBlockMeta( pistx, pisty, pistz );
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if (pistonMeta <= 6) // only retract if piston is not already retracted
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{
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return;
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}
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m_World->BroadcastBlockAction(pistx, pisty, pistz, 1, pistonMeta & ~(8), E_BLOCK_PISTON);
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m_World->FastSetBlock(pistx, pisty, pistz, pistonBlock, pistonMeta & ~(8));
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AddDir(pistx, pisty, pistz, pistonMeta & 7, 1)
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if (m_World->GetBlock(pistx, pisty, pistz) == E_BLOCK_PISTON_EXTENSION)
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{
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if (pistonBlock == E_BLOCK_STICKY_PISTON)
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{
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int tempx = pistx, tempy = pisty, tempz = pistz;
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AddDir( tempx, tempy, tempz, pistonMeta & 7, 1 )
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char tempblock = m_World->GetBlock( tempx, tempy, tempz );
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if (
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(tempblock == E_BLOCK_OBSIDIAN) ||
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(tempblock == E_BLOCK_BEDROCK) ||
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(tempblock == E_BLOCK_PISTON_EXTENSION)
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)
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{
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// These cannot be moved by the sticky piston, bail out
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return;
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}
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m_World->SetBlock( pistx, pisty, pistz, tempblock, m_World->GetBlockMeta( tempx, tempy, tempz ) );
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m_World->SetBlock( tempx, tempy, tempz, E_BLOCK_AIR, 0 );
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}
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else
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{
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m_World->SetBlock( pistx, pisty, pistz, E_BLOCK_AIR, 0 );
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}
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}
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}
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