Trees.h

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// Trees.h

// Interfaces to helper functions used for generating trees

/*
Note that all of these functions must generate the same tree image for the same input (x, y, z, seq)
    - cStructGenTrees depends on this
To generate a random image for the (x, y, z) coords, pass an arbitrary value as (seq).
Each function returns two arrays of blocks, "logs" and "other". The point is that logs are of higher priority,
logs can overwrite others(leaves), but others shouldn't overwrite logs. This is an optimization for the generator.
*/





#pragma once

#include "../Noise/Noise.h"





// Blocks that don't block tree growth:
#define CASE_TREE_ALLOWED_BLOCKS \
    case E_BLOCK_AIR: \
    case E_BLOCK_LEAVES: \
    case E_BLOCK_NEW_LEAVES: \
    case E_BLOCK_SNOW: \
    case E_BLOCK_TALL_GRASS: \
    case E_BLOCK_DEAD_BUSH: \
    case E_BLOCK_SAPLING: \
    case E_BLOCK_VINES

// Blocks that a tree may overwrite when growing:
#define CASE_TREE_OVERWRITTEN_BLOCKS \
    case E_BLOCK_AIR: \
    /* case E_BLOCK_LEAVES: LEAVES are a special case, they can be overwritten only by log. Handled in cChunkMap::ReplaceTreeBlocks(). */ \
    case E_BLOCK_SNOW: \
    case E_BLOCK_TALL_GRASS: \
    case E_BLOCK_BIG_FLOWER: \
    case E_BLOCK_DEAD_BUSH: \
    case E_BLOCK_SAPLING: \
    case E_BLOCK_VINES





void GetTreeImageByBiome(Vector3i a_BlockPos, cNoise & a_Noise, int a_Seq, EMCSBiome a_Biome, sSetBlockVector & a_LogBlocks, sSetBlockVector & a_OtherBlocks);

void GetAppleTreeImage(Vector3i a_BlockPos, cNoise & a_Noise, int a_Seq, sSetBlockVector & a_LogBlocks, sSetBlockVector & a_OtherBlocks);

void GetSmallAppleTreeImage(Vector3i a_BlockPos, cNoise & a_Noise, int a_Seq, sSetBlockVector & a_LogBlocks, sSetBlockVector & a_OtherBlocks);

void GetLargeAppleTreeImage(Vector3i a_BlockPos, cNoise & a_Noise, int a_Seq, sSetBlockVector & a_LogBlocks, sSetBlockVector & a_OtherBlocks);

Vector3d GetTreeBranch(BLOCKTYPE a_BlockType, NIBBLETYPE a_BlockMeta, Vector3i a_BlockPos, int a_BranchLength, Vector3d a_StartDirection, Vector3d a_Direction, sSetBlockVector & a_LogBlocks);

NIBBLETYPE GetLogMetaFromDirection(NIBBLETYPE a_BlockMeta, Vector3d a_Direction);

void GetBirchTreeImage(Vector3i a_BlockPos, cNoise & a_Noise, int a_Seq, sSetBlockVector & a_LogBlocks, sSetBlockVector & a_OtherBlocks);

void GetAcaciaTreeImage(Vector3i a_BlockPos, cNoise & a_Noise, int a_Seq, sSetBlockVector & a_LogBlocks, sSetBlockVector & a_OtherBlocks);

void GetDarkoakTreeImage(Vector3i a_BlockPos, cNoise & a_Noise, int a_Seq, sSetBlockVector & a_LogBlocks, sSetBlockVector & a_OtherBlocks);

void GetTallBirchTreeImage(Vector3i a_BlockPos, cNoise & a_Noise, int a_Seq, sSetBlockVector & a_LogBlocks, sSetBlockVector & a_OtherBlocks);

void GetConiferTreeImage(Vector3i a_BlockPos, cNoise & a_Noise, int a_Seq, sSetBlockVector & a_LogBlocks, sSetBlockVector & a_OtherBlocks);

void GetSpruceTreeImage(Vector3i a_BlockPos, cNoise & a_Noise, int a_Seq, sSetBlockVector & a_LogBlocks, sSetBlockVector & a_OtherBlocks);

void GetPineTreeImage(Vector3i a_BlockPos, cNoise & a_Noise, int a_Seq, sSetBlockVector & a_LogBlocks, sSetBlockVector & a_OtherBlocks);

void GetSwampTreeImage(Vector3i a_BlockPos, cNoise & a_Noise, int a_Seq, sSetBlockVector & a_LogBlocks, sSetBlockVector & a_OtherBlocks);

void GetAppleBushImage(Vector3i a_BlockPos, cNoise & a_Noise, int a_Seq, sSetBlockVector & a_LogBlocks, sSetBlockVector & a_OtherBlocks);

void GetJungleTreeImage(Vector3i a_BlockPos, cNoise & a_Noise, int a_Seq, sSetBlockVector & a_LogBlocks, sSetBlockVector & a_OtherBlocks, bool a_Large);

void GetLargeJungleTreeImage(Vector3i a_BlockPos, cNoise & a_Noise, int a_Seq, sSetBlockVector & a_LogBlocks, sSetBlockVector & a_OtherBlocks);

void GetSmallJungleTreeImage(Vector3i a_BlockPos, cNoise & a_Noise, int a_Seq, sSetBlockVector & a_LogBlocks, sSetBlockVector & a_OtherBlocks);