forked from mtcontrib/markers
Merge pull request #7 from Kilarin/master
Calculate 3D cube from multiple markers instead of requiring a rectangle of 4
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Sokomine
commit
dc45b5ca23
139
init.lua
139
init.lua
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@ -9,7 +9,7 @@ markers = {}
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markers.positions = {}
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-- store the positions of that many markers for each player (until server restart)
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markers.MAX_MARKERS = 10;
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markers.MAX_MARKERS = 50;
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-- the protection against digging of the marker by other players expires after this time
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markers.EXPIRE_AFTER = 60*60*24;
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@ -144,46 +144,6 @@ markers.marker_placed = function( pos, placer, itemstack )
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tostring( d )..' m '..dir_name..'.');
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end
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-- do the last 4 markers placed form an area?
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if( #markers.positions[ name ] > 3 ) then
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local count_x_coord = {};
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local count_z_coord = {};
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local anz_x_coord = 0;
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local anz_z_coord = 0;
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local check_failed = 0;
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for i=0,3 do
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local v = markers.positions[ name ][ n-i ].x;
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if( not( count_x_coord[ v ] )) then
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count_x_coord[ v ] = 1;
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anz_x_coord = anz_x_coord + 1;
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elseif( count_x_coord[ v ] == 2 ) then
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check_failed = 1;
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else
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count_x_coord[ v ] = count_x_coord[ v ] + 1;
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end
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v = markers.positions[ name ][ n-i ].z;
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if( not( count_z_coord[ v ] )) then
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count_z_coord[ v ] = 1;
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anz_z_coord = anz_z_coord + 1;
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elseif( count_z_coord[ v ] == 2 ) then
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check_failed = 1;
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else
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count_z_coord[ v ] = count_z_coord[ v ] + 1;
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end
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end
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if( anz_x_coord == 2
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and anz_z_coord == 2
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and check_failed == 0 ) then
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minetest.chat_send_player( name, 'The last four markers you placed form a rectangle. '..
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'Right-click on this marker here in order to protect the area.');
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end
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end
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-- make sure the list does not grow too large
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if( n > markers.MAX_MARKERS ) then
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table.remove( markers.positions[ name ], 1 );
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@ -266,7 +226,32 @@ markers.marker_after_dig_node = function(pos, oldnode, oldmetadata, digger)
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end
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--this function returns a min_pos and max_pos that are the corners
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--of a box that contains ALL of the players active markers.
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markers.get_box_from_markers = function(name)
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if (not name) or (not (markers.positions[ name ][ 1 ] )) then
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return {x=0,y=0,z=0},{x=1,y=1,z=1}
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end
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local min_pos={}
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min_pos.x = markers.positions[ name ][ 1 ].x
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min_pos.y = markers.positions[ name ][ 1 ].y
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min_pos.z = markers.positions[ name ][ 1 ].z
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local max_pos={}
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max_pos.x = markers.positions[ name ][ 1 ].x
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max_pos.y = markers.positions[ name ][ 1 ].y
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max_pos.z = markers.positions[ name ][ 1 ].z
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for i,p in ipairs( markers.positions[ name ] ) do
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if p.x < min_pos.x then min_pos.x = p.x end
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if p.x > max_pos.x then max_pos.x = p.x end
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if p.y < min_pos.y then min_pos.y = p.y end
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if p.y > max_pos.y then max_pos.y = p.y end
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if p.z < min_pos.z then min_pos.z = p.z end
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if p.z > max_pos.z then max_pos.z = p.z end
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end
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--print("getbox: min_pos.x="..min_pos.x.." y="..min_pos.y.." z="..min_pos.z)
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--print(" : max_pos.x="..max_pos.x.." y="..max_pos.y.." z="..max_pos.z)
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return min_pos, max_pos
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end --get_box_from_markers
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@ -291,69 +276,19 @@ markers.get_marker_formspec = function(player, pos, error_msg)
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local n = #markers.positions[ name ];
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if( markers.positions[ name ][ n ].x ~= pos.x
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or markers.positions[ name ][ n ].y ~= pos.y
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or markers.positions[ name ][ n ].z ~= pos.z ) then
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return formspec_info.."Please use the marker\nyou placed last\n"..
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"for accessing this menu.\nYou can find said marker at\n"..
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minetest.pos_to_string( markers.positions[ name ][ n ] )..'.]';
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end
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if( n < 4 ) then
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return formspec_info.."Please place 4 markers\n - one in each corner\n of your area - first.]";
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if ( n < 2 ) then
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return formspec_info.."Please place 2 or more markers\n - at least one in each corner\n of your area first]";
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end
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local coords_raw = meta:get_string( 'coords' );
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local coords = {};
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if( coords_raw ~= nil and coords_raw ~= '' ) then
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coords = minetest.deserialize( coords_raw );
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end
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local opposite = n;
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-- the last 4 markers placed ought to form the area
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if( true or #coords ~= 2 ) then -- TODO
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for i=1,3 do
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-- if both coordinates are diffrent, then this may be the opposite marker
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if( ( markers.positions[ name ][ n-i ].x ~=
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markers.positions[ name ][ n ].x )
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and ( markers.positions[ name ][ n-i ].z ~=
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markers.positions[ name ][ n ].z )) then
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opposite = n-i;
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coords = { markers.positions[ name ][ n ],
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markers.positions[ name ][ n-i ] };
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end
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end
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-- check if they fit
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for i=1,3 do
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if(not( ((n-i) == opposite )
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or not(markers.positions[ name ][ n-i ] )
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or not( coords ) or not( coords[1]) or not( coords[2])
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or not(markers.positions[ name ] )
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or not(markers.positions[ name ][ n-i ] )
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or ( markers.positions[ name ][ n-i ].x == coords[ 1 ].x
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and markers.positions[ name ][ n-i ].z == coords[ 2 ].z )
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or ( markers.positions[ name ][ n-i ].x == coords[ 2 ].x
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and markers.positions[ name ][ n-i ].z == coords[ 1 ].z ))) then
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return formspec_info.."Error: The last 4 markers\nyou placed do not form\na rectangle.]";
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end
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end
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local coords={}
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coords[1],coords[2] = markers.get_box_from_markers(name)
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-- save data
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meta:set_string( 'coords', minetest.serialize( coords ) );
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end
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if( not( coords ) or #coords < 2 or not( coords[1] ) or not( coords[2] )) then
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return formspec_info.."Error: The last 4 markers\nyou placed do not form\na rectangle.]";
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return formspec_info.."Error in markers.]";
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end
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-- the coordinates are set; we may present an input form now
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@ -402,11 +337,11 @@ markers.get_marker_formspec = function(player, pos, error_msg)
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'label[0.5,3.0;Your area ought to go..]'..
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'label[0.5,3.5;this many blocks up:]'..
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'field[5.0,4.0;1,0.5;add_height;;40]'..
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'label[6.0,3.5;(relative to this marker)]'..
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'label[6.0,3.5;(above '..coords[2].y..' )]'..
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'label[0.5,4.0;and this many blocks down:]'..
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'field[5.0,4.5;1,0.5;add_depth;;10]'..
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'label[6.0,4.0;(relative to this marker)]'..
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'label[6.0,4.0;(below '..coords[1].y..' )]'..
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'label[0.5,4.5;The area shall be named]'..
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'field[5.0,5.0;6,0.5;set_area_name;;please enter a name]'..
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@ -493,8 +428,8 @@ markers.marker_on_receive_fields = function(pos, formname, fields, sender)
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local pos1 = coords[1];
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local pos2 = coords[2];
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-- apply height values from the formspeck
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pos1.y = pos.y + add_height;
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pos2.y = pos.y - add_depth;
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pos1.y = pos1.y - add_depth;
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pos2.y = pos2.y + add_height;
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pos1, pos2 = areas:sortPos( pos1, pos2 );
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