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L-System treegen
This commit is contained in:
RealBadAngel
Ilya Zhuravlev
parent
45029117f5
commit
b40e599866
@ -1063,6 +1063,60 @@ methods:
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^ Return world-specific perlin noise (int(worldseed)+seeddiff)
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- clear_objects()
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^ clear all objects in the environments
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- spawn_tree (pos, {treedef})
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^ spawns L-System tree at given pos with definition in treedef table
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treedef={
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axiom, - string initial tree axiom
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rules_a, - string rules set A
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rules_b, - string rules set B
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rules_c, - string rules set C
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rules_d, - string rules set D
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trunk, - string trunk node name
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leaves, - string leaves node name
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angle, - num angle in deg
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iterations, - num max # of iterations, usually 2 -5
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random_level, - num factor to lower nr of iterations, usually 0 - 3
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thin_trunks, - boolean true -> use thin trunks
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fruit_tree, - boolean true -> is a fruit tree
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fruit - string fruit node name
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}
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Key for Special L-System Symbols used in Axioms
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G - move forward one unit with the pin down
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F - move forward one unit with the pin up
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A - replace with rules set A
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B - replace with rules set B
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C - replace with rules set C
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D - replace with rules set D
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a - replace with rules set A, chance 90%
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b - replace with rules set B, chance 80%
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c - replace with rules set C, chance 70%
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d - replace with rules set D, chance 60%
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+ - yaw the turtle right by angle parameter
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- - yaw the turtle left by angle parameter
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& - pitch the turtle down by angle parameter
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^ - pitch the turtle up by angle parameter
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/ - roll the turtle to the right by angle parameter
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* - roll the turtle to the left by angle parameter
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[ - save in stack current state info
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] - recover from stack state info
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Example usage: spawn small apple tree
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apple_tree={
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axiom="FFFFFAFFBF",
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rules_a="[&&&FFFFF&&FFFF][&&&++++FFFFF&&FFFF][&&&----FFFFF&&FFFF]",
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rules_b="[&&&++FFFFF&&FFFF][&&&--FFFFF&&FFFF][&&&------FFFFF&&FFFF]",
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trunk="default:tree",
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leaves="default:leaves",
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angle=30,
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iterations=2,
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random_level=0,
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thin_trunks=true,
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fruit_tree=true,
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fruit="default:apple"
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}
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minetest.env:spawn_tree(pos,apple_tree)
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Deprecated:
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- add_rat(pos): Add C++ rat object (no-op)
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- add_firefly(pos): Add C++ firefly object (no-op)
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@ -188,6 +188,7 @@ set(common_SRCS
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log.cpp
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content_sao.cpp
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mapgen.cpp
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treegen.cpp
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content_nodemeta.cpp
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content_mapnode.cpp
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collision.cpp
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@ -25,7 +25,7 @@ with this program; if not, write to the Free Software Foundation, Inc.,
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#include "content_sao.h"
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#include "settings.h"
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#include "mapblock.h" // For getNodeBlockPos
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#include "mapgen.h" // For mapgen::make_tree
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#include "treegen.h" // For treegen::make_tree
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#include "map.h"
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#define PP(x) "("<<(x).X<<","<<(x).Y<<","<<(x).Z<<")"
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@ -118,7 +118,7 @@ public:
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v3s16 tree_blockp = getNodeBlockPos(tree_p);
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vmanip.initialEmerge(tree_blockp - v3s16(1,1,1), tree_blockp + v3s16(1,1,1));
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bool is_apple_tree = myrand()%4 == 0;
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mapgen::make_tree(vmanip, tree_p, is_apple_tree, ndef);
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treegen::make_tree(vmanip, tree_p, is_apple_tree, ndef);
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vmanip.blitBackAll(&modified_blocks);
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// update lighting
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170
src/mapgen.cpp
170
src/mapgen.cpp
@ -29,6 +29,7 @@ with this program; if not, write to the Free Software Foundation, Inc.,
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#include "voxelalgorithms.h"
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#include "profiler.h"
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#include "main.h" // For g_profiler
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#include "treegen.h"
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namespace mapgen
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{
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@ -120,174 +121,7 @@ static s16 find_stone_level(VoxelManipulator &vmanip, v2s16 p2d,
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}
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#endif
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void make_tree(ManualMapVoxelManipulator &vmanip, v3s16 p0,
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bool is_apple_tree, INodeDefManager *ndef)
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{
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MapNode treenode(ndef->getId("mapgen_tree"));
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MapNode leavesnode(ndef->getId("mapgen_leaves"));
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MapNode applenode(ndef->getId("mapgen_apple"));
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s16 trunk_h = myrand_range(4, 5);
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v3s16 p1 = p0;
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for(s16 ii=0; ii<trunk_h; ii++)
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{
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if(vmanip.m_area.contains(p1))
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if(ii == 0 || vmanip.getNodeNoExNoEmerge(p1).getContent() == CONTENT_AIR)
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vmanip.m_data[vmanip.m_area.index(p1)] = treenode;
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p1.Y++;
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}
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// p1 is now the last piece of the trunk
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p1.Y -= 1;
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VoxelArea leaves_a(v3s16(-2,-1,-2), v3s16(2,2,2));
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//SharedPtr<u8> leaves_d(new u8[leaves_a.getVolume()]);
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Buffer<u8> leaves_d(leaves_a.getVolume());
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for(s32 i=0; i<leaves_a.getVolume(); i++)
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leaves_d[i] = 0;
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// Force leaves at near the end of the trunk
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{
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s16 d = 1;
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for(s16 z=-d; z<=d; z++)
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for(s16 y=-d; y<=d; y++)
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for(s16 x=-d; x<=d; x++)
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{
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leaves_d[leaves_a.index(v3s16(x,y,z))] = 1;
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}
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}
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// Add leaves randomly
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for(u32 iii=0; iii<7; iii++)
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{
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s16 d = 1;
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v3s16 p(
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myrand_range(leaves_a.MinEdge.X, leaves_a.MaxEdge.X-d),
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myrand_range(leaves_a.MinEdge.Y, leaves_a.MaxEdge.Y-d),
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myrand_range(leaves_a.MinEdge.Z, leaves_a.MaxEdge.Z-d)
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);
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for(s16 z=0; z<=d; z++)
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for(s16 y=0; y<=d; y++)
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for(s16 x=0; x<=d; x++)
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{
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leaves_d[leaves_a.index(p+v3s16(x,y,z))] = 1;
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}
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}
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// Blit leaves to vmanip
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for(s16 z=leaves_a.MinEdge.Z; z<=leaves_a.MaxEdge.Z; z++)
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for(s16 y=leaves_a.MinEdge.Y; y<=leaves_a.MaxEdge.Y; y++)
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for(s16 x=leaves_a.MinEdge.X; x<=leaves_a.MaxEdge.X; x++)
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{
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v3s16 p(x,y,z);
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p += p1;
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if(vmanip.m_area.contains(p) == false)
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continue;
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u32 vi = vmanip.m_area.index(p);
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if(vmanip.m_data[vi].getContent() != CONTENT_AIR
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&& vmanip.m_data[vi].getContent() != CONTENT_IGNORE)
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continue;
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u32 i = leaves_a.index(x,y,z);
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if(leaves_d[i] == 1) {
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bool is_apple = myrand_range(0,99) < 10;
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if(is_apple_tree && is_apple) {
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vmanip.m_data[vi] = applenode;
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} else {
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vmanip.m_data[vi] = leavesnode;
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}
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}
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}
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}
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#if 0
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static void make_jungletree(VoxelManipulator &vmanip, v3s16 p0,
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INodeDefManager *ndef)
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{
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MapNode treenode(ndef->getId("mapgen_jungletree"));
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MapNode leavesnode(ndef->getId("mapgen_leaves"));
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for(s16 x=-1; x<=1; x++)
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for(s16 z=-1; z<=1; z++)
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{
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if(myrand_range(0, 2) == 0)
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continue;
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v3s16 p1 = p0 + v3s16(x,0,z);
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v3s16 p2 = p0 + v3s16(x,-1,z);
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if(vmanip.m_area.contains(p2)
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&& vmanip.m_data[vmanip.m_area.index(p2)] == CONTENT_AIR)
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vmanip.m_data[vmanip.m_area.index(p2)] = treenode;
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else if(vmanip.m_area.contains(p1))
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vmanip.m_data[vmanip.m_area.index(p1)] = treenode;
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}
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s16 trunk_h = myrand_range(8, 12);
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v3s16 p1 = p0;
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for(s16 ii=0; ii<trunk_h; ii++)
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{
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if(vmanip.m_area.contains(p1))
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vmanip.m_data[vmanip.m_area.index(p1)] = treenode;
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p1.Y++;
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}
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// p1 is now the last piece of the trunk
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p1.Y -= 1;
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VoxelArea leaves_a(v3s16(-3,-2,-3), v3s16(3,2,3));
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//SharedPtr<u8> leaves_d(new u8[leaves_a.getVolume()]);
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Buffer<u8> leaves_d(leaves_a.getVolume());
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for(s32 i=0; i<leaves_a.getVolume(); i++)
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leaves_d[i] = 0;
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// Force leaves at near the end of the trunk
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{
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s16 d = 1;
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for(s16 z=-d; z<=d; z++)
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for(s16 y=-d; y<=d; y++)
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for(s16 x=-d; x<=d; x++)
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{
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leaves_d[leaves_a.index(v3s16(x,y,z))] = 1;
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}
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}
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// Add leaves randomly
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for(u32 iii=0; iii<30; iii++)
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{
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s16 d = 1;
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v3s16 p(
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myrand_range(leaves_a.MinEdge.X, leaves_a.MaxEdge.X-d),
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myrand_range(leaves_a.MinEdge.Y, leaves_a.MaxEdge.Y-d),
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myrand_range(leaves_a.MinEdge.Z, leaves_a.MaxEdge.Z-d)
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);
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for(s16 z=0; z<=d; z++)
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for(s16 y=0; y<=d; y++)
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for(s16 x=0; x<=d; x++)
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{
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leaves_d[leaves_a.index(p+v3s16(x,y,z))] = 1;
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}
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}
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// Blit leaves to vmanip
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for(s16 z=leaves_a.MinEdge.Z; z<=leaves_a.MaxEdge.Z; z++)
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for(s16 y=leaves_a.MinEdge.Y; y<=leaves_a.MaxEdge.Y; y++)
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for(s16 x=leaves_a.MinEdge.X; x<=leaves_a.MaxEdge.X; x++)
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{
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v3s16 p(x,y,z);
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p += p1;
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if(vmanip.m_area.contains(p) == false)
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continue;
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u32 vi = vmanip.m_area.index(p);
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if(vmanip.m_data[vi].getContent() != CONTENT_AIR
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&& vmanip.m_data[vi].getContent() != CONTENT_IGNORE)
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continue;
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u32 i = leaves_a.index(x,y,z);
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if(leaves_d[i] == 1)
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vmanip.m_data[vi] = leavesnode;
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}
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}
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static void make_papyrus(VoxelManipulator &vmanip, v3s16 p0,
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INodeDefManager *ndef)
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@ -2239,7 +2073,7 @@ void make_block(BlockMakeData *data)
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}
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p.Y++;
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// Make a tree
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make_tree(vmanip, p, false, ndef);
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treegen::make_tree(vmanip, p, false, ndef);
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}
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}
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}
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@ -42,10 +42,6 @@ namespace mapgen
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// Main map generation routine
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void make_block(BlockMakeData *data);
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// Add a tree
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void make_tree(ManualMapVoxelManipulator &vmanip, v3s16 p0,
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bool is_apple_tree, INodeDefManager *ndef);
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/*
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These are used by FarMesh
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*/
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@ -48,6 +48,7 @@ extern "C" {
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#include "noise.h" // PseudoRandom for LuaPseudoRandom
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#include "util/pointedthing.h"
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#include "rollback.h"
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#include "treegen.h"
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static void stackDump(lua_State *L, std::ostream &o)
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{
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@ -4004,6 +4005,45 @@ private:
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return 0;
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}
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static int l_spawn_tree(lua_State *L)
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{
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EnvRef *o = checkobject(L, 1);
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ServerEnvironment *env = o->m_env;
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if(env == NULL) return 0;
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v3s16 p0 = read_v3s16(L, 2);
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treegen::TreeDef tree_def;
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std::string trunk,leaves,fruit;
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INodeDefManager *ndef = env->getGameDef()->ndef();
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if(lua_istable(L, 3))
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{
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getstringfield(L, 3, "axiom", tree_def.initial_axiom);
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getstringfield(L, 3, "rules_a", tree_def.rules_a);
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getstringfield(L, 3, "rules_b", tree_def.rules_b);
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getstringfield(L, 3, "rules_c", tree_def.rules_a);
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getstringfield(L, 3, "rules_d", tree_def.rules_b);
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getstringfield(L, 3, "trunk", trunk);
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tree_def.trunknode=ndef->getId(trunk);
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getstringfield(L, 3, "leaves", leaves);
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tree_def.leavesnode=ndef->getId(leaves);
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getintfield(L, 3, "angle", tree_def.angle);
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getintfield(L, 3, "iterations", tree_def.iterations);
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getintfield(L, 3, "random_level", tree_def.iterations_random_level);
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getboolfield(L, 3, "thin_trunks", tree_def.thin_trunks);
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getboolfield(L, 3, "fruit_tree", tree_def.fruit_tree);
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if (tree_def.fruit_tree)
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{
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getstringfield(L, 3, "fruit", fruit);
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tree_def.fruitnode=ndef->getId(fruit);
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}
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}
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else
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return 0;
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treegen::spawn_ltree (env, p0, ndef, tree_def);
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return 1;
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}
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public:
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EnvRef(ServerEnvironment *env):
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m_env(env)
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@ -4086,6 +4126,7 @@ const luaL_reg EnvRef::methods[] = {
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method(EnvRef, find_nodes_in_area),
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method(EnvRef, get_perlin),
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method(EnvRef, clear_objects),
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method(EnvRef, spawn_tree),
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{0,0}
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};
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518
src/treegen.cpp
Normal file
518
src/treegen.cpp
Normal file
@ -0,0 +1,518 @@
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/*
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Minetest-c55
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Copyright (C) 2010-2012 celeron55, Perttu Ahola <celeron55@gmail.com>,
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2012 RealBadAngel, Maciej Kasatkin <mk@realbadangel.pl>
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as published by
|
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the Free Software Foundation; either version 2.1 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
|
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
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GNU Lesser General Public License for more details.
|
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|
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You should have received a copy of the GNU Lesser General Public License along
|
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with this program; if not, write to the Free Software Foundation, Inc.,
|
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51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#include <irr_v3d.h>
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#include <stack>
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#include "noise.h"
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#include "map.h"
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#include "environment.h"
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#include "nodedef.h"
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#include "treegen.h"
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namespace treegen
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{
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void make_tree(ManualMapVoxelManipulator &vmanip, v3s16 p0,
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bool is_apple_tree, INodeDefManager *ndef)
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{
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MapNode treenode(ndef->getId("mapgen_tree"));
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MapNode leavesnode(ndef->getId("mapgen_leaves"));
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MapNode applenode(ndef->getId("mapgen_apple"));
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s16 trunk_h = myrand_range(4, 5);
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v3s16 p1 = p0;
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for(s16 ii=0; ii<trunk_h; ii++)
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{
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if(vmanip.m_area.contains(p1))
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if(ii == 0 || vmanip.getNodeNoExNoEmerge(p1).getContent() == CONTENT_AIR)
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vmanip.m_data[vmanip.m_area.index(p1)] = treenode;
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p1.Y++;
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}
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// p1 is now the last piece of the trunk
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p1.Y -= 1;
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VoxelArea leaves_a(v3s16(-2,-1,-2), v3s16(2,2,2));
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//SharedPtr<u8> leaves_d(new u8[leaves_a.getVolume()]);
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Buffer<u8> leaves_d(leaves_a.getVolume());
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for(s32 i=0; i<leaves_a.getVolume(); i++)
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leaves_d[i] = 0;
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// Force leaves at near the end of the trunk
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{
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s16 d = 1;
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for(s16 z=-d; z<=d; z++)
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for(s16 y=-d; y<=d; y++)
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for(s16 x=-d; x<=d; x++)
|
||||
{
|
||||
leaves_d[leaves_a.index(v3s16(x,y,z))] = 1;
|
||||
}
|
||||
}
|
||||
|
||||
// Add leaves randomly
|
||||
for(u32 iii=0; iii<7; iii++)
|
||||
{
|
||||
s16 d = 1;
|
||||
|
||||
v3s16 p(
|
||||
myrand_range(leaves_a.MinEdge.X, leaves_a.MaxEdge.X-d),
|
||||
myrand_range(leaves_a.MinEdge.Y, leaves_a.MaxEdge.Y-d),
|
||||
myrand_range(leaves_a.MinEdge.Z, leaves_a.MaxEdge.Z-d)
|
||||
);
|
||||
|
||||
for(s16 z=0; z<=d; z++)
|
||||
for(s16 y=0; y<=d; y++)
|
||||
for(s16 x=0; x<=d; x++)
|
||||
{
|
||||
leaves_d[leaves_a.index(p+v3s16(x,y,z))] = 1;
|
||||
}
|
||||
}
|
||||
|
||||
// Blit leaves to vmanip
|
||||
for(s16 z=leaves_a.MinEdge.Z; z<=leaves_a.MaxEdge.Z; z++)
|
||||
for(s16 y=leaves_a.MinEdge.Y; y<=leaves_a.MaxEdge.Y; y++)
|
||||
for(s16 x=leaves_a.MinEdge.X; x<=leaves_a.MaxEdge.X; x++)
|
||||
{
|
||||
v3s16 p(x,y,z);
|
||||
p += p1;
|
||||
if(vmanip.m_area.contains(p) == false)
|
||||
continue;
|
||||
u32 vi = vmanip.m_area.index(p);
|
||||
if(vmanip.m_data[vi].getContent() != CONTENT_AIR
|
||||
&& vmanip.m_data[vi].getContent() != CONTENT_IGNORE)
|
||||
continue;
|
||||
u32 i = leaves_a.index(x,y,z);
|
||||
if(leaves_d[i] == 1) {
|
||||
bool is_apple = myrand_range(0,99) < 10;
|
||||
if(is_apple_tree && is_apple) {
|
||||
vmanip.m_data[vi] = applenode;
|
||||
} else {
|
||||
vmanip.m_data[vi] = leavesnode;
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// L-System tree LUA spawner
|
||||
void spawn_ltree (ServerEnvironment *env, v3s16 p0, INodeDefManager *ndef, TreeDef tree_definition)
|
||||
{
|
||||
ServerMap *map = &env->getServerMap();
|
||||
core::map<v3s16, MapBlock*> modified_blocks;
|
||||
ManualMapVoxelManipulator vmanip(map);
|
||||
v3s16 tree_blockp = getNodeBlockPos(p0);
|
||||
vmanip.initialEmerge(tree_blockp - v3s16(1,1,1), tree_blockp + v3s16(1,1,1));
|
||||
make_ltree (vmanip, p0, ndef, tree_definition);
|
||||
vmanip.blitBackAll(&modified_blocks);
|
||||
|
||||
// update lighting
|
||||
core::map<v3s16, MapBlock*> lighting_modified_blocks;
|
||||
for(core::map<v3s16, MapBlock*>::Iterator
|
||||
i = modified_blocks.getIterator();
|
||||
i.atEnd() == false; i++)
|
||||
{
|
||||
lighting_modified_blocks.insert(i.getNode()->getKey(), i.getNode()->getValue());
|
||||
}
|
||||
map->updateLighting(lighting_modified_blocks, modified_blocks);
|
||||
// Send a MEET_OTHER event
|
||||
MapEditEvent event;
|
||||
event.type = MEET_OTHER;
|
||||
for(core::map<v3s16, MapBlock*>::Iterator
|
||||
i = modified_blocks.getIterator();
|
||||
i.atEnd() == false; i++)
|
||||
{
|
||||
v3s16 p = i.getNode()->getKey();
|
||||
event.modified_blocks.insert(p, true);
|
||||
}
|
||||
map->dispatchEvent(&event);
|
||||
}
|
||||
|
||||
//L-System tree generator
|
||||
void make_ltree(ManualMapVoxelManipulator &vmanip, v3s16 p0, INodeDefManager *ndef,
|
||||
TreeDef tree_definition)
|
||||
{
|
||||
MapNode dirtnode(ndef->getId("mapgen_dirt"));
|
||||
|
||||
// chance of inserting abcd rules
|
||||
double prop_a = 9;
|
||||
double prop_b = 8;
|
||||
double prop_c = 7;
|
||||
double prop_d = 6;
|
||||
|
||||
//randomize tree growth level, minimum=2
|
||||
s16 iterations = tree_definition.iterations;
|
||||
if (tree_definition.iterations_random_level>0)
|
||||
iterations -= myrand_range(0,tree_definition.iterations_random_level);
|
||||
if (iterations<2)
|
||||
iterations=2;
|
||||
|
||||
s16 MAX_ANGLE_OFFSET = 5;
|
||||
double angle_in_radians = (double)tree_definition.angle*M_PI/180;
|
||||
double angleOffset_in_radians = (s16)(myrand_range(0,1)%MAX_ANGLE_OFFSET)*M_PI/180;
|
||||
|
||||
//initialize rotation matrix, position and stacks for branches
|
||||
core::matrix4 rotation;
|
||||
rotation=setRotationAxisRadians(rotation, M_PI/2,v3f(0,0,1));
|
||||
v3f position = v3f(0,0,0);
|
||||
std::stack <core::matrix4> stack_orientation;
|
||||
std::stack <v3f> stack_position;
|
||||
|
||||
//generate axiom
|
||||
std::string axiom = tree_definition.initial_axiom;
|
||||
for(s16 i=0; i<iterations; i++)
|
||||
{
|
||||
std::string temp = "";
|
||||
for(s16 j=0; j<(s16)axiom.size(); j++)
|
||||
{
|
||||
char axiom_char = axiom.at(j);
|
||||
switch (axiom_char)
|
||||
{
|
||||
case 'A':
|
||||
temp+=tree_definition.rules_a;
|
||||
break;
|
||||
case 'B':
|
||||
temp+=tree_definition.rules_b;
|
||||
break;
|
||||
case 'C':
|
||||
temp+=tree_definition.rules_c;
|
||||
break;
|
||||
case 'D':
|
||||
temp+=tree_definition.rules_d;
|
||||
break;
|
||||
case 'a':
|
||||
if (prop_a >= myrand_range(1,10))
|
||||
temp+=tree_definition.rules_a;
|
||||
break;
|
||||
case 'b':
|
||||
if (prop_b >= myrand_range(1,10))
|
||||
temp+=tree_definition.rules_b;
|
||||
break;
|
||||
case 'c':
|
||||
if (prop_c >= myrand_range(1,10))
|
||||
temp+=tree_definition.rules_c;
|
||||
break;
|
||||
case 'd':
|
||||
if (prop_d >= myrand_range(1,10))
|
||||
temp+=tree_definition.rules_d;
|
||||
break;
|
||||
default:
|
||||
temp+=axiom_char;
|
||||
break;
|
||||
}
|
||||
}
|
||||
axiom=temp;
|
||||
}
|
||||
|
||||
//make sure tree is not floating in the air
|
||||
if (tree_definition.thin_trunks == false)
|
||||
{
|
||||
make_tree_node_placement(vmanip,v3f(p0.X+position.X+1,p0.Y+position.Y-1,p0.Z+position.Z),dirtnode);
|
||||
make_tree_node_placement(vmanip,v3f(p0.X+position.X-1,p0.Y+position.Y-1,p0.Z+position.Z),dirtnode);
|
||||
make_tree_node_placement(vmanip,v3f(p0.X+position.X,p0.Y+position.Y-1,p0.Z+position.Z+1),dirtnode);
|
||||
make_tree_node_placement(vmanip,v3f(p0.X+position.X,p0.Y+position.Y-1,p0.Z+position.Z-1),dirtnode);
|
||||
}
|
||||
|
||||
/* build tree out of generated axiom
|
||||
|
||||
Key for Special L-System Symbols used in Axioms
|
||||
|
||||
G - move forward one unit with the pin down
|
||||
F - move forward one unit with the pin up
|
||||
A - replace with rules set A
|
||||
B - replace with rules set B
|
||||
C - replace with rules set C
|
||||
D - replace with rules set D
|
||||
a - replace with rules set A, chance 90%
|
||||
b - replace with rules set B, chance 80%
|
||||
c - replace with rules set C, chance 70%
|
||||
d - replace with rules set D, chance 60%
|
||||
+ - yaw the turtle right by angle degrees
|
||||
- - yaw the turtle left by angle degrees
|
||||
& - pitch the turtle down by angle degrees
|
||||
^ - pitch the turtle up by angle degrees
|
||||
/ - roll the turtle to the right by angle degrees
|
||||
* - roll the turtle to the left by angle degrees
|
||||
[ - save in stack current state info
|
||||
] - recover from stack state info
|
||||
|
||||
*/
|
||||
|
||||
s16 x,y,z;
|
||||
for(s16 i=0; i<(s16)axiom.size(); i++)
|
||||
{
|
||||
char axiom_char = axiom.at(i);
|
||||
core::matrix4 temp_rotation;
|
||||
temp_rotation.makeIdentity();
|
||||
v3f dir;
|
||||
switch (axiom_char)
|
||||
{
|
||||
case 'G':
|
||||
dir = v3f(-1,0,0);
|
||||
dir = transposeMatrix(rotation,dir);
|
||||
position+=dir;
|
||||
break;
|
||||
case 'F':
|
||||
make_tree_trunk_placement(vmanip,v3f(p0.X+position.X,p0.Y+position.Y,p0.Z+position.Z),tree_definition);
|
||||
if (tree_definition.thin_trunks == false)
|
||||
{
|
||||
make_tree_trunk_placement(vmanip,v3f(p0.X+position.X+1,p0.Y+position.Y,p0.Z+position.Z),tree_definition);
|
||||
make_tree_trunk_placement(vmanip,v3f(p0.X+position.X-1,p0.Y+position.Y,p0.Z+position.Z),tree_definition);
|
||||
make_tree_trunk_placement(vmanip,v3f(p0.X+position.X,p0.Y+position.Y,p0.Z+position.Z+1),tree_definition);
|
||||
make_tree_trunk_placement(vmanip,v3f(p0.X+position.X,p0.Y+position.Y,p0.Z+position.Z-1),tree_definition);
|
||||
}
|
||||
if (stack_orientation.empty() == false)
|
||||
{
|
||||
s16 size = 1;
|
||||
for(x=-size; x<size+1; x++)
|
||||
for(y=-size; y<size+1; y++)
|
||||
for(z=-size; z<size+1; z++)
|
||||
if (abs(x) == size and abs(y) == size and abs(z) == size)
|
||||
{
|
||||
make_tree_leaves_placement(vmanip,v3f(p0.X+position.X+x+1,p0.Y+position.Y+y,p0.Z+position.Z+z),tree_definition);
|
||||
make_tree_leaves_placement(vmanip,v3f(p0.X+position.X+x-1,p0.Y+position.Y+y,p0.Z+position.Z+z),tree_definition);
|
||||
make_tree_leaves_placement(vmanip,v3f(p0.X+position.X+x,p0.Y+position.Y+y,p0.Z+position.Z+z+1),tree_definition);
|
||||
make_tree_leaves_placement(vmanip,v3f(p0.X+position.X+x,p0.Y+position.Y+y,p0.Z+position.Z+z-1),tree_definition);
|
||||
}
|
||||
}
|
||||
dir = v3f(1,0,0);
|
||||
dir = transposeMatrix(rotation,dir);
|
||||
position+=dir;
|
||||
break;
|
||||
// turtle commands
|
||||
case '[':
|
||||
stack_orientation.push(rotation);
|
||||
stack_position.push(position);
|
||||
break;
|
||||
case ']':
|
||||
rotation=stack_orientation.top();
|
||||
stack_orientation.pop();
|
||||
position=stack_position.top();
|
||||
stack_position.pop();
|
||||
break;
|
||||
case '+':
|
||||
temp_rotation.makeIdentity();
|
||||
temp_rotation=setRotationAxisRadians(temp_rotation, angle_in_radians+angleOffset_in_radians,v3f(0,0,1));
|
||||
rotation*=temp_rotation;
|
||||
break;
|
||||
case '-':
|
||||
temp_rotation.makeIdentity();
|
||||
temp_rotation=setRotationAxisRadians(temp_rotation, angle_in_radians+angleOffset_in_radians,v3f(0,0,-1));
|
||||
rotation*=temp_rotation;
|
||||
break;
|
||||
case '&':
|
||||
temp_rotation.makeIdentity();
|
||||
temp_rotation=setRotationAxisRadians(temp_rotation, angle_in_radians+angleOffset_in_radians,v3f(0,1,0));
|
||||
rotation*=temp_rotation;
|
||||
break;
|
||||
case '^':
|
||||
temp_rotation.makeIdentity();
|
||||
temp_rotation=setRotationAxisRadians(temp_rotation, angle_in_radians+angleOffset_in_radians,v3f(0,-1,0));
|
||||
rotation*=temp_rotation;
|
||||
break;
|
||||
case '*':
|
||||
temp_rotation.makeIdentity();
|
||||
temp_rotation=setRotationAxisRadians(temp_rotation, angle_in_radians,v3f(1,0,0));
|
||||
rotation*=temp_rotation;
|
||||
break;
|
||||
case '/':
|
||||
temp_rotation.makeIdentity();
|
||||
temp_rotation=setRotationAxisRadians(temp_rotation, angle_in_radians,v3f(-1,0,0));
|
||||
rotation*=temp_rotation;
|
||||
break;
|
||||
default:
|
||||
break;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
void make_tree_node_placement(ManualMapVoxelManipulator &vmanip, v3f p0,
|
||||
MapNode node)
|
||||
{
|
||||
v3s16 p1 = v3s16(round(p0.X),round(p0.Y),round(p0.Z));
|
||||
if(vmanip.m_area.contains(p1) == false)
|
||||
return;
|
||||
u32 vi = vmanip.m_area.index(p1);
|
||||
if(vmanip.m_data[vi].getContent() != CONTENT_AIR
|
||||
&& vmanip.m_data[vi].getContent() != CONTENT_IGNORE)
|
||||
return;
|
||||
vmanip.m_data[vmanip.m_area.index(p1)] = node;
|
||||
}
|
||||
|
||||
void make_tree_trunk_placement(ManualMapVoxelManipulator &vmanip, v3f p0,
|
||||
TreeDef &tree_definition)
|
||||
{
|
||||
v3s16 p1 = v3s16(round(p0.X),round(p0.Y),round(p0.Z));
|
||||
if(vmanip.m_area.contains(p1) == false)
|
||||
return;
|
||||
u32 vi = vmanip.m_area.index(p1);
|
||||
if(vmanip.m_data[vi].getContent() != CONTENT_AIR
|
||||
&& vmanip.m_data[vi].getContent() != CONTENT_IGNORE)
|
||||
return;
|
||||
vmanip.m_data[vmanip.m_area.index(p1)] = tree_definition.trunknode;
|
||||
}
|
||||
|
||||
void make_tree_leaves_placement(ManualMapVoxelManipulator &vmanip, v3f p0,
|
||||
TreeDef &tree_definition)
|
||||
{
|
||||
v3s16 p1 = v3s16(round(p0.X),round(p0.Y),round(p0.Z));
|
||||
if(vmanip.m_area.contains(p1) == false)
|
||||
return;
|
||||
u32 vi = vmanip.m_area.index(p1);
|
||||
if(vmanip.m_data[vi].getContent() != CONTENT_AIR
|
||||
&& vmanip.m_data[vi].getContent() != CONTENT_IGNORE)
|
||||
return;
|
||||
if (tree_definition.fruit_tree)
|
||||
{
|
||||
if (myrand_range(1,100) > 90+tree_definition.iterations)
|
||||
vmanip.m_data[vmanip.m_area.index(p1)] = tree_definition.fruitnode;
|
||||
else
|
||||
vmanip.m_data[vmanip.m_area.index(p1)] = tree_definition.leavesnode;
|
||||
}
|
||||
else if (myrand_range(1,100) > 20)
|
||||
vmanip.m_data[vmanip.m_area.index(p1)] = tree_definition.leavesnode;
|
||||
}
|
||||
|
||||
irr::core::matrix4 setRotationAxisRadians(irr::core::matrix4 M, double angle, v3f axis)
|
||||
{
|
||||
double c = cos(angle);
|
||||
double s = sin(angle);
|
||||
double t = 1.0 - c;
|
||||
|
||||
double tx = t * axis.X;
|
||||
double ty = t * axis.Y;
|
||||
double tz = t * axis.Z;
|
||||
double sx = s * axis.X;
|
||||
double sy = s * axis.Y;
|
||||
double sz = s * axis.Z;
|
||||
|
||||
M[0] = tx * axis.X + c;
|
||||
M[1] = tx * axis.Y + sz;
|
||||
M[2] = tx * axis.Z - sy;
|
||||
|
||||
M[4] = ty * axis.X - sz;
|
||||
M[5] = ty * axis.Y + c;
|
||||
M[6] = ty * axis.Z + sx;
|
||||
|
||||
M[8] = tz * axis.X + sy;
|
||||
M[9] = tz * axis.Y - sx;
|
||||
M[10] = tz * axis.Z + c;
|
||||
return M;
|
||||
}
|
||||
|
||||
v3f transposeMatrix(irr::core::matrix4 M, v3f v)
|
||||
{
|
||||
v3f translated;
|
||||
double x = M[0] * v.X + M[4] * v.Y + M[8] * v.Z +M[12];
|
||||
double y = M[1] * v.X + M[5] * v.Y + M[9] * v.Z +M[13];
|
||||
double z = M[2] * v.X + M[6] * v.Y + M[10] * v.Z +M[14];
|
||||
translated.X=x;
|
||||
translated.Y=y;
|
||||
translated.Z=z;
|
||||
return translated;
|
||||
}
|
||||
|
||||
#if 0
|
||||
static void make_jungletree(VoxelManipulator &vmanip, v3s16 p0,
|
||||
INodeDefManager *ndef)
|
||||
{
|
||||
MapNode treenode(ndef->getId("mapgen_jungletree"));
|
||||
MapNode leavesnode(ndef->getId("mapgen_leaves"));
|
||||
|
||||
for(s16 x=-1; x<=1; x++)
|
||||
for(s16 z=-1; z<=1; z++)
|
||||
{
|
||||
if(myrand_range(0, 2) == 0)
|
||||
continue;
|
||||
v3s16 p1 = p0 + v3s16(x,0,z);
|
||||
v3s16 p2 = p0 + v3s16(x,-1,z);
|
||||
if(vmanip.m_area.contains(p2)
|
||||
&& vmanip.m_data[vmanip.m_area.index(p2)] == CONTENT_AIR)
|
||||
vmanip.m_data[vmanip.m_area.index(p2)] = treenode;
|
||||
else if(vmanip.m_area.contains(p1))
|
||||
vmanip.m_data[vmanip.m_area.index(p1)] = treenode;
|
||||
}
|
||||
|
||||
s16 trunk_h = myrand_range(8, 12);
|
||||
v3s16 p1 = p0;
|
||||
for(s16 ii=0; ii<trunk_h; ii++)
|
||||
{
|
||||
if(vmanip.m_area.contains(p1))
|
||||
vmanip.m_data[vmanip.m_area.index(p1)] = treenode;
|
||||
p1.Y++;
|
||||
}
|
||||
|
||||
// p1 is now the last piece of the trunk
|
||||
p1.Y -= 1;
|
||||
|
||||
VoxelArea leaves_a(v3s16(-3,-2,-3), v3s16(3,2,3));
|
||||
//SharedPtr<u8> leaves_d(new u8[leaves_a.getVolume()]);
|
||||
Buffer<u8> leaves_d(leaves_a.getVolume());
|
||||
for(s32 i=0; i<leaves_a.getVolume(); i++)
|
||||
leaves_d[i] = 0;
|
||||
|
||||
// Force leaves at near the end of the trunk
|
||||
{
|
||||
s16 d = 1;
|
||||
for(s16 z=-d; z<=d; z++)
|
||||
for(s16 y=-d; y<=d; y++)
|
||||
for(s16 x=-d; x<=d; x++)
|
||||
{
|
||||
leaves_d[leaves_a.index(v3s16(x,y,z))] = 1;
|
||||
}
|
||||
}
|
||||
|
||||
// Add leaves randomly
|
||||
for(u32 iii=0; iii<30; iii++)
|
||||
{
|
||||
s16 d = 1;
|
||||
|
||||
v3s16 p(
|
||||
myrand_range(leaves_a.MinEdge.X, leaves_a.MaxEdge.X-d),
|
||||
myrand_range(leaves_a.MinEdge.Y, leaves_a.MaxEdge.Y-d),
|
||||
myrand_range(leaves_a.MinEdge.Z, leaves_a.MaxEdge.Z-d)
|
||||
);
|
||||
|
||||
for(s16 z=0; z<=d; z++)
|
||||
for(s16 y=0; y<=d; y++)
|
||||
for(s16 x=0; x<=d; x++)
|
||||
{
|
||||
leaves_d[leaves_a.index(p+v3s16(x,y,z))] = 1;
|
||||
}
|
||||
}
|
||||
|
||||
// Blit leaves to vmanip
|
||||
for(s16 z=leaves_a.MinEdge.Z; z<=leaves_a.MaxEdge.Z; z++)
|
||||
for(s16 y=leaves_a.MinEdge.Y; y<=leaves_a.MaxEdge.Y; y++)
|
||||
for(s16 x=leaves_a.MinEdge.X; x<=leaves_a.MaxEdge.X; x++)
|
||||
{
|
||||
v3s16 p(x,y,z);
|
||||
p += p1;
|
||||
if(vmanip.m_area.contains(p) == false)
|
||||
continue;
|
||||
u32 vi = vmanip.m_area.index(p);
|
||||
if(vmanip.m_data[vi].getContent() != CONTENT_AIR
|
||||
&& vmanip.m_data[vi].getContent() != CONTENT_IGNORE)
|
||||
continue;
|
||||
u32 i = leaves_a.index(x,y,z);
|
||||
if(leaves_d[i] == 1)
|
||||
vmanip.m_data[vi] = leavesnode;
|
||||
}
|
||||
}
|
||||
#endif
|
||||
|
||||
}; // namespace treegen
|
||||
71
src/treegen.h
Normal file
71
src/treegen.h
Normal file
@ -0,0 +1,71 @@
|
||||
/*
|
||||
Minetest-c55
|
||||
Copyright (C) 2010-2012 celeron55, Perttu Ahola <celeron55@gmail.com>,
|
||||
2012 RealBadAngel, Maciej Kasatkin <mk@realbadangel.pl>
|
||||
This program is free software; you can redistribute it and/or modify
|
||||
it under the terms of the GNU Lesser General Public License as published by
|
||||
the Free Software Foundation; either version 2.1 of the License, or
|
||||
(at your option) any later version.
|
||||
|
||||
This program is distributed in the hope that it will be useful,
|
||||
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
GNU Lesser General Public License for more details.
|
||||
|
||||
You should have received a copy of the GNU Lesser General Public License along
|
||||
with this program; if not, write to the Free Software Foundation, Inc.,
|
||||
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
|
||||
*/
|
||||
|
||||
#ifndef TREEGEN_HEADER
|
||||
#define TREEGEN_HEADER
|
||||
|
||||
#include <matrix4.h>
|
||||
|
||||
class ManualMapVoxelManipulator;
|
||||
class INodeDefManager;
|
||||
|
||||
|
||||
namespace treegen
|
||||
{
|
||||
|
||||
struct TreeDef
|
||||
{
|
||||
std::string initial_axiom;
|
||||
std::string rules_a;
|
||||
std::string rules_b;
|
||||
std::string rules_c;
|
||||
std::string rules_d;
|
||||
MapNode trunknode;
|
||||
MapNode leavesnode;
|
||||
int angle;
|
||||
int iterations;
|
||||
int iterations_random_level;
|
||||
bool thin_trunks;
|
||||
bool fruit_tree;
|
||||
MapNode fruitnode;
|
||||
};
|
||||
|
||||
// Add default tree
|
||||
void make_tree(ManualMapVoxelManipulator &vmanip, v3s16 p0,
|
||||
bool is_apple_tree, INodeDefManager *ndef);
|
||||
|
||||
// Add L-Systems tree (used by engine)
|
||||
void make_ltree(ManualMapVoxelManipulator &vmanip, v3s16 p0, INodeDefManager *ndef,
|
||||
TreeDef tree_definition);
|
||||
// Spawn L-systems tree from LUA
|
||||
void spawn_ltree (ServerEnvironment *env, v3s16 p0, INodeDefManager *ndef, TreeDef tree_definition);
|
||||
|
||||
// L-System tree gen helper functions
|
||||
void make_tree_node_placement(ManualMapVoxelManipulator &vmanip, v3f p0,
|
||||
MapNode node);
|
||||
void make_tree_trunk_placement(ManualMapVoxelManipulator &vmanip, v3f p0,
|
||||
TreeDef &tree_definition);
|
||||
void make_tree_leaves_placement(ManualMapVoxelManipulator &vmanip, v3f p0,
|
||||
TreeDef &tree_definition);
|
||||
irr::core::matrix4 setRotationAxisRadians(irr::core::matrix4 M, double angle,v3f axis);
|
||||
|
||||
v3f transposeMatrix(irr::core::matrix4 M ,v3f v);
|
||||
|
||||
}; // namespace treegen
|
||||
#endif
|
||||
Loading…
Reference in New Issue
Block a user