first commit
dgm3333
commit
b3d2a10e6e
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local growwallActive=false
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local growwalkActive=false
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local growwallMaxHeight=10
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local growwallAutoExtend=false
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local growwallNodeMarker="wool:red"
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local growwallNodeTarget="default:sandstonebrick"
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local growwallFileName="/home/david/.minetest/mods/growwall/sun.bmp"
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-- Don't edit these
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local voxManip -- handle to a voxelmanipulator
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local oldPos = {x=0,y=0,z=0} -- players most recent position
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minetest.register_chatcommand("/growwall", {
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params = "",
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description = "Activate growwall",
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func = function(name, param)
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growwallActive = not growwallActive
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if growwallActive == true then
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minetest.chat_send_all("growwallActive=true")
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else
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minetest.chat_send_all("growwallActive=false")
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end
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-- possibly add params
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return true
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end,
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})
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minetest.register_on_punchnode(
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function(pos, node, puncher)
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if growwallActive == true then
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voxManip = minetest.get_voxel_manip()
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if node.name ~= growwallNodeMarker then
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growblock(pos)
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else
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checkSurround(pos)
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end
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voxManip = nil
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end
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end
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)
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minetest.register_chatcommand("/growbmp", {
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params = "",
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description = "Load a bmp and place it in the minetest world",
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func = function(name, param)
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local f = assert(io.open(growwallFileName, "rb"));
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local bmp = f:read("*a");
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f:close();
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voxManip = minetest.get_voxel_manip()
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DrawBitmap(bmp);
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voxManip = nil
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end,
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})
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minetest.register_chatcommand("/growwalk", {
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params = "",
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description = "Activate growwalk",
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func = function(name, param)
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growwalkActive = not growwalkActive
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if growwalkActive == true then
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local player = minetest.get_player_by_name("singleplayer")
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local oldPos = player:getpos()
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oldPos = {x=(math.floor(oldPos.x+0.5)), y=(math.floor(oldPos.y+0.5)), z=(math.floor(oldPos.z+0.5))}
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minetest.chat_send_all("growwalkActive=true")
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voxManip = minetest.get_voxel_manip()
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else
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minetest.chat_send_all("growwalkActive=false")
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voxManip = nil
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end
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return true
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end,
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})
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minetest.register_globalstep(function(dtime)
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if growwalkActive == true then
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local player = minetest.get_player_by_name("singleplayer")
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local pos = player:getpos()
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pos = {x=(math.floor(pos.x+0.5)), y=(math.floor(pos.y+0.5)), z=(math.floor(pos.z+0.5))}
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if pos.x~=oldPos.x or pos.z~=oldPos.z then
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growblock(oldPos)
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oldPos = pos
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end
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end
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end)
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------------------------------
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-- Simple growth functions
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------------------------------
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function checkSurround(pos)
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for dy=-3,3 do
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for dx=-1,1 do
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for dz=-1,1 do
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local p = {x=pos.x+dx, y=pos.y+dy, z=pos.z+dz}
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voxManip:read_from_map(p, p)
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if (minetest.get_node(p).name == growwallNodeMarker) then
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-- local p1 = {x=pos.x+dx, y=pos.y+1, z=pos.z+dz}
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-- voxManip:read_from_map(p1, p1)
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-- if (minetest.get_node(p1).name == "air") then
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-- print(p.x..",".. p.y..",".. p.z)
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growblock(p)
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checkSurround(p)
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-- end
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end
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end
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end
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end
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end
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function growblock(pos)
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print(pos.x..",".. pos.y..",".. pos.z)
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for dy=0,growwallMaxHeight do
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local p = {x=pos.x, y=math.floor(pos.y+dy), z=pos.z}
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voxManip:read_from_map(p, p)
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-- place only replaces air and water
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--minetest.place_node(p, {name=growwallNodeTarget})
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minetest.set_node(p, {name=growwallNodeTarget})
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end
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end
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------------------------------
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-- BITMAP management functions
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------------------------------
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function error(err)
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-- Replace with your own error output method:
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minetest.chat_send_all(err)
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print("ERROR growwall:".. err)
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end
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-- Helper function: Parse a 16-bit WORD from the binary string
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function ReadWORD(str, offset)
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local loByte = str:byte(offset);
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local hiByte = str:byte(offset+1);
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return hiByte*256 + loByte;
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end
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-- Helper function: Parse a 32-bit DWORD from the binary string
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function ReadDWORD(str, offset)
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local loWord = ReadWORD(str, offset);
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local hiWord = ReadWORD(str, offset+2);
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return hiWord*65536 + loWord;
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end
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-- Process a bitmap file in a string, and call DrawPoint for each pixel
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function DrawBitmap(bytecode)
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if 1==0 then
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-- This code could easily be used to modify the placement of the image
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local player = minetest.get_player_by_name(name)
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local pos = player:getpos()
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pos.x, pos.y, pos.z = math.floor(pos.x), math.floor(pos.y), math.floor(pos.z)
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for x = pos.x-1, pos.x+1 do
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for z = pos.z-1, pos.z+1 do
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minetest.place_node({x=x, y=pos.y, z=z}, {name="displayallnodes:Background"})
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minetest.place_node({x=x, y=pos.y+1, z=z}, {name="displayallnodes:Background"})
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end
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end
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minetest.remove_node(pos)
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minetest.place_node(pos, {name="displayallnodes:White"})
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meta = minetest.get_meta(pos)
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meta:set_string("nodeCount", 0);
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player:setpos({x=pos.x, y=pos.y+1, z=pos.z})
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player:set_look_yaw(0)
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player:get_look_pitch(0)
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local nodeMax = 0
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-- key is node name, eg default:stone value is definition table
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for key, value in pairs(minetest.registered_nodes) do
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nodeMax = nodeMax + 1
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end
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minetest.chat_send_all("placing".. nodeMax.. " nodes")
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meta:set_string("nodeMax", nodeMax);
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end
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-------------------------
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-- Parse BITMAPFILEHEADER
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-------------------------
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minetest.chat_send_all("Parse BITMAPFILEHEADER")
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local offset = 1;
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local bfType = ReadWORD(bytecode, offset);
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if(bfType ~= 0x4D42) then
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error("Not a bitmap file (Invalid BMP magic value)");
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return;
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end
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local bfOffBits = ReadWORD(bytecode, offset+10);
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-------------------------
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-- Parse BITMAPINFOHEADER
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-------------------------
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minetest.chat_send_all("Parse BITMAPINFOHEADER")
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offset = 15; -- BITMAPFILEHEADER is 14 bytes long
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local biWidth = ReadDWORD(bytecode, offset+4);
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local biHeight = ReadDWORD(bytecode, offset+8);
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local biBitCount = ReadWORD(bytecode, offset+14);
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local biCompression = ReadDWORD(bytecode, offset+16);
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if(biBitCount ~= 24) then
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error("Only 24-bit bitmaps supported (Is " .. biBitCount .. "bpp)");
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return;
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end
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if(biCompression ~= 0) then
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error("Only uncompressed bitmaps supported (Compression type is " .. biCompression .. ")");
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return;
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end
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---------------------
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-- Parse bitmap image
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---------------------
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local player = minetest.get_player_by_name("singleplayer")
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nodeCount = 0
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for y = biHeight-1, 0, -1 do
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offset = bfOffBits + (biWidth*biBitCount/8)*y + 1;
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for x = 0, biWidth-1 do
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local b = bytecode:byte(offset);
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local g = bytecode:byte(offset+1);
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local r = bytecode:byte(offset+2);
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offset = offset + 3;
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local wallHeight = math.floor((255 - r)/10) -- use r channel of RGB for wall height
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if wallHeight>0 then
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if (nodeCount % 50) == 0 then
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minetest.chat_send_all("placed ".. nodeCount.. " pixels")
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end
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nodeCount = nodeCount+1
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for height = 0, wallHeight do
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local p = {x=x, y=height, z=y}
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voxManip:read_from_map(p, p)
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-- print((x).. ", 0, ".. (y).. ": ".. (wallHeight))
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-- print(p.x.. ": ".. p.y.. ": ".. p.z.. ": ".. height)
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-- moving the player around might solves the problem with sections missing if blocks have not been generated, but is quite slow
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-- player:setpos(p)
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--if you only want certain blocks replaced then use this conditional:-
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-- local n = minetest.get_node(p).name
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-- if (n == "air") then
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-- place only replaces air and water
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-- minetest.place_node(p, {name=growwallNodeTarget})
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minetest.set_node(p, {name=growwallNodeTarget})
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-- end
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end
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end
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end
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end
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minetest.chat_send_all("completed placing nodes")
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end
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