32ee4aaf1e
git-svn-id: http://mc-server.googlecode.com/svn/trunk@1218 0a769ca7-a7f5-676a-18bf-c427514a06d6
81 lines
2.0 KiB
C++
81 lines
2.0 KiB
C++
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#pragma once
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#include "BlockHandler.h"
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#include "../MersenneTwister.h"
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#include "../World.h"
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/// Handler used for both dirt and grass
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class cBlockDirtHandler :
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public cBlockHandler
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{
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public:
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cBlockDirtHandler(BLOCKTYPE a_BlockType)
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: cBlockHandler(a_BlockType)
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{
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}
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virtual void ConvertToPickups(cItems & a_Pickups, NIBBLETYPE a_BlockMeta) override
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{
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a_Pickups.push_back(cItem(E_BLOCK_DIRT, 1, 0));
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}
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virtual void OnUpdate(cWorld * a_World, int a_BlockX, int a_BlockY, int a_BlockZ) override
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{
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if (m_BlockType != E_BLOCK_GRASS)
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{
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return;
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}
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// Grass becomes dirt if there is something on top of it:
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BLOCKTYPE Above = a_World->GetBlock(a_BlockX, a_BlockY + 1, a_BlockZ);
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if (!g_BlockTransparent[Above] && !g_BlockOneHitDig[Above])
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{
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a_World->FastSetBlock(a_BlockX, a_BlockY, a_BlockZ, E_BLOCK_DIRT, 0);
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return;
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}
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// Grass spreads to adjacent blocks:
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MTRand rand;
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for (int i = 0; i < 2; i++) // Pick two blocks to grow to
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{
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int OfsX = rand.randInt(2) - 1; // [-1 .. 1]
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int OfsY = rand.randInt(4) - 3; // [-3 .. 1]
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int OfsZ = rand.randInt(2) - 1; // [-1 .. 1]
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BLOCKTYPE DestBlock;
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NIBBLETYPE DestMeta;
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bool IsValid = a_World->GetBlockTypeMeta(a_BlockX + OfsX, a_BlockY + OfsY, a_BlockZ + OfsZ, DestBlock, DestMeta);
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if (!IsValid || (DestBlock != E_BLOCK_DIRT))
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{
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continue;
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}
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BLOCKTYPE AboveDest;
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NIBBLETYPE AboveMeta;
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IsValid = a_World->GetBlockTypeMeta(a_BlockX + OfsX, a_BlockY + OfsY + 1, a_BlockZ + OfsZ, AboveDest, AboveMeta);
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ASSERT(IsValid); // WTF - how did we get the DestBlock if AboveBlock is not valid?
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if (g_BlockOneHitDig[AboveDest] || g_BlockTransparent[AboveDest])
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{
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a_World->FastSetBlock(a_BlockX + OfsX, a_BlockY + OfsY, a_BlockZ + OfsZ, E_BLOCK_GRASS, 0);
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}
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} // for i - repeat twice
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}
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virtual const char * GetStepSound(void) override
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{
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return "step.gravel";
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}
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} ;
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