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-rw-r--r--source/Piston.cpp83
1 files changed, 36 insertions, 47 deletions
diff --git a/source/Piston.cpp b/source/Piston.cpp
index 310fcdfd4..7ffa9febd 100644
--- a/source/Piston.cpp
+++ b/source/Piston.cpp
@@ -20,7 +20,7 @@ extern bool g_BlockPistonBreakable[];
-
+//Replace AddDir (...) with the switch cases that, sets coords in direction of piston face
#define AddDir( x, y, z, dir, amount ) \
switch (dir) \
{ \
@@ -52,25 +52,26 @@ unsigned short cPiston::FirstPassthroughBlock(int pistonX, int pistonY, int pist
pistonmeta &= 7;
if (pistonmeta >= 6)
{
- // Just in case, it shouldn't happen but if it would, it'd case inf loop
+ // Just in case, it shouldn't happen but if it would, it'd cause inf loop
LOGD("cPiston::FirstPassthroughBlock - piston has invalid meta data!\n");
return 9001;
}
BLOCKTYPE currBlock;
- for (ret = 0; ret < 24; ret++) // push up to 24 blocks
+ NIBBLETYPE currMeta;
+ for (ret = 0; ret < 24; ret++) //Push up to 24 blocks
{
- AddDir( pistonX, pistonY, pistonZ, pistonmeta, 1)
- currBlock = m_World->GetBlock( pistonX, pistonY, pistonZ );
- if ((currBlock == E_BLOCK_BEDROCK) || (currBlock == E_BLOCK_OBSIDIAN) || (currBlock == E_BLOCK_PISTON_EXTENSION))
+ AddDir( pistonX, pistonY, pistonZ, pistonmeta, 1) //Set the coords one further from the piston direction
+ m_World->GetBlockTypeMeta(pistonX, pistonY, pistonZ, currBlock, currMeta);
+ if ((currBlock == E_BLOCK_BEDROCK) || (currBlock == E_BLOCK_OBSIDIAN) || (currBlock == E_BLOCK_PISTON_EXTENSION) || ( (currMeta & 0x8) != 0x0 ))
{
return 9001;
}
- if (g_BlockPistonBreakable[currBlock])
+ if (g_BlockPistonBreakable[currBlock]) //If it's a breakable block (air, torch, etc.) then the line of blocks can be pushed
{
return ret;
}
}
- return 9001;
+ return 9001; //There is no space for the blocks to move within 24 spaces, piston can't push
}
@@ -82,6 +83,7 @@ void cPiston::ExtendPiston( int pistx, int pisty, int pistz )
BLOCKTYPE pistonBlock;
NIBBLETYPE pistonMeta;
m_World->GetBlockTypeMeta(pistx, pisty, pistz, pistonBlock, pistonMeta);
+
char isSticky = (char)(pistonBlock == E_BLOCK_STICKY_PISTON) * 8;
if ( (pistonMeta & 0x8) != 0x0 )
{
@@ -90,9 +92,9 @@ void cPiston::ExtendPiston( int pistx, int pisty, int pistz )
}
unsigned short dist = FirstPassthroughBlock(pistx, pisty, pistz, pistonMeta);
- if (dist > 9000) return; // too many blocks
+ if (dist > 9000) return; // FirstPassthroughBlock says piston can't push anything, bail out
- AddDir(pistx, pisty, pistz, pistonMeta & 7, dist + 1)
+ AddDir(pistx, pisty, pistz, pistonMeta & 7, dist + 1) //Get the coords of the air / breakable block in the line, dist+1 because of coords
BLOCKTYPE currBlock;
NIBBLETYPE currMeta;
m_World->GetBlockTypeMeta(pistx, pisty, pistz, currBlock, currMeta);
@@ -101,37 +103,33 @@ void cPiston::ExtendPiston( int pistx, int pisty, int pistz )
cBlockHandler * Handler = BlockHandler(currBlock);
if (Handler->DoesDropOnUnsuitable())
{
- Handler->DropBlock(m_World, NULL, pistx, pisty, pistz);
+ Handler->DropBlock(m_World, NULL, pistx, pisty, pistz); //If block is breakable, drop it
}
}
- int oldx = pistx, oldy = pisty, oldz = pistz;
+ int oldx = pistx, oldy = pisty, oldz = pistz; //Make a second set of coord vars along with the originals
NIBBLETYPE currBlockMeta;
- for (int i = dist + 1; i > 0; i--)
+ if (dist != 0) //Check for single block being pushed - for loop doesn't catch it in time and breaks stuffz
{
- AddDir(pistx, pisty, pistz, pistonMeta & 7, -1)
- m_World->GetBlockTypeMeta(pistx, pisty, pistz, currBlock, currBlockMeta);
- m_World->SetBlock( oldx, oldy, oldz, currBlock, currBlockMeta);
- oldx = pistx;
- oldy = pisty;
- oldz = pistz;
+ for (int i = dist + 1; i > 1; i--) //Decrement from the dropped breakable block to two further than the piston (one further will be future extension)
+ {
+ AddDir(pistx, pisty, pistz, pistonMeta & 7, -1) //Move one set of coords one back from breakable dropped block
+ m_World->GetBlockTypeMeta(pistx, pisty, pistz, currBlock, currBlockMeta); //Get the block
+ m_World->SetBlock( oldx, oldy, oldz, currBlock, currBlockMeta); //Set the block at the location of the original coords
+ oldx = pistx; //Shift the selectors down a block and repeat
+ oldy = pisty;
+ oldz = pistz;
+ }
}
- m_World->BroadcastBlockAction(pistx, pisty, pistz, 0, pistonMeta, E_BLOCK_PISTON);
- m_World->BroadcastSoundEffect("tile.piston.out", pistx * 8, pisty * 8, pistz * 8, 0.5f, 0.7f);
- m_World->FastSetBlock( pistx, pisty, pistz, pistonBlock, pistonMeta | 0x8 );
int extx = pistx;
int exty = pisty;
int extz = pistz;
- AddDir(extx, exty, extz, pistonMeta & 7, 1)
-
- // TODO: This code needs replacing
- // Sleeping here will play the piston animation on the client; however, it will block the entire server
- // for the 100 ms, effectively dropping 2 game ticks per piston. This is very bad
- // This needs to be handled using delayed scheduled tasks instead
- cSleep::MilliSleep(100);
-
- m_World->SetBlock(extx, exty, extz, E_BLOCK_PISTON_EXTENSION, isSticky + pistonMeta & 7);
+ AddDir(pistx, pisty, pistz, pistonMeta & 7, -1) //Move back one block to the piston base
+ m_World->BroadcastBlockAction(pistx, pisty, pistz, 0, pistonMeta, E_BLOCK_PISTON); //Set the base
+ m_World->BroadcastSoundEffect("tile.piston.out", pistx * 8, pisty * 8, pistz * 8, 0.5f, 0.7f);
+ m_World->FastSetBlock( pistx, pisty, pistz, pistonBlock, pistonMeta | 0x8 );
+ m_World->SetBlock(extx, exty, extz, E_BLOCK_PISTON_EXTENSION, isSticky + pistonMeta); //Set the arm
}
@@ -150,9 +148,9 @@ void cPiston::RetractPiston( int pistx, int pisty, int pistz )
}
m_World->BroadcastBlockAction(pistx, pisty, pistz, 1, pistonMeta & ~(8), E_BLOCK_PISTON);
m_World->BroadcastSoundEffect("tile.piston.in", pistx * 8, pisty * 8, pistz * 8, 0.5f, 0.7f);
- m_World->FastSetBlock(pistx, pisty, pistz, pistonBlock, pistonMeta & ~(8));
+ m_World->FastSetBlock(pistx, pisty, pistz, pistonBlock, pistonMeta & ~(8)); //Set the base
- AddDir(pistx, pisty, pistz, pistonMeta & 7, 1)
+ AddDir(pistx, pisty, pistz, pistonMeta & 7, 1) //Move forwards to the extension coord
if (m_World->GetBlock(pistx, pisty, pistz) != E_BLOCK_PISTON_EXTENSION)
{
LOGD("%s: Piston without an extension?", __FUNCTION__);
@@ -162,36 +160,27 @@ void cPiston::RetractPiston( int pistx, int pisty, int pistz )
if (pistonBlock == E_BLOCK_STICKY_PISTON)
{
int tempx = pistx, tempy = pisty, tempz = pistz;
- AddDir( tempx, tempy, tempz, pistonMeta & 7, 1 )
+ AddDir( tempx, tempy, tempz, pistonMeta & 7, 1 ) //Move forward to the block being pulled
BLOCKTYPE tempblock;
NIBBLETYPE tempmeta;
- m_World->GetBlockTypeMeta(tempx, tempy, tempz, tempblock, tempmeta);
+ m_World->GetBlockTypeMeta(tempx, tempy, tempz, tempblock, tempmeta); //Check for pullable-ness
if (
(tempblock == E_BLOCK_OBSIDIAN) ||
(tempblock == E_BLOCK_BEDROCK) ||
- (tempblock == E_BLOCK_PISTON_EXTENSION)
+ (tempblock == E_BLOCK_PISTON_EXTENSION) ||
+ (g_BlockPistonBreakable[tempblock]) ||
+ ((tempmeta & 0x8) != 0x0 )
)
{
// These cannot be moved by the sticky piston, bail out
return;
}
-
- // TODO: This code needs replacing
- // Sleeping here will play the piston animation on the client; however, it will block the entire server
- // for the 100 ms, effectively dropping 2 game ticks per piston. This is very bad
- // This needs to be handled using delayed scheduled tasks instead
- cSleep::MilliSleep(100);
m_World->SetBlock(pistx, pisty, pistz, tempblock, tempmeta);
m_World->SetBlock(tempx, tempy, tempz, E_BLOCK_AIR, 0);
}
else
{
- // TODO: This code needs replacing
- // Sleeping here will play the piston animation on the client; however, it will block the entire server
- // for the 100 ms, effectively dropping 2 game ticks per piston. This is very bad
- // This needs to be handled using delayed scheduled tasks instead
- cSleep::MilliSleep(100);
m_World->SetBlock(pistx, pisty, pistz, E_BLOCK_AIR, 0);
}