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</pre></td>
<td class='lines'><pre><code><span class="hl slc">-- Track Circuit Breaks and Track Sections - Player interaction</span>
<span class="hl kwa">local</span> players_assign_tcb <span class="hl opt">= {}</span>
<span class="hl kwa">local</span> players_assign_signal <span class="hl opt">= {}</span>
<span class="hl kwa">local</span> players_link_ts <span class="hl opt">= {}</span>
<span class="hl kwa">local</span> ildb <span class="hl opt">=</span> advtrains<span class="hl opt">.</span>interlocking<span class="hl opt">.</span>db
<span class="hl kwa">local</span> ilrs <span class="hl opt">=</span> advtrains<span class="hl opt">.</span>interlocking<span class="hl opt">.</span>route
<span class="hl kwa">local</span> sigd_equal <span class="hl opt">=</span> advtrains<span class="hl opt">.</span>interlocking<span class="hl opt">.</span>sigd_equal
<span class="hl kwa">local</span> lntrans <span class="hl opt">= {</span> <span class="hl str">"A"</span><span class="hl opt">,</span> <span class="hl str">"B"</span> <span class="hl opt">}</span>
<span class="hl kwa">local function</span> <span class="hl kwd">sigd_to_string</span><span class="hl opt">(</span>sigd<span class="hl opt">)</span>
<span class="hl kwa">return</span> minetest<span class="hl opt">.</span><span class="hl kwd">pos_to_string</span><span class="hl opt">(</span>sigd<span class="hl opt">.</span>p<span class="hl opt">)..</span><span class="hl str">" / "</span><span class="hl opt">..</span>lntrans<span class="hl opt">[</span>sigd<span class="hl opt">.</span>s<span class="hl opt">]</span>
<span class="hl kwa">end</span>
minetest<span class="hl opt">.</span><span class="hl kwd">register_node</span><span class="hl opt">(</span><span class="hl str">"advtrains_interlocking:tcb_node"</span><span class="hl opt">, {</span>
drawtype <span class="hl opt">=</span> <span class="hl str">"mesh"</span><span class="hl opt">,</span>
paramtype<span class="hl opt">=</span><span class="hl str">"light"</span><span class="hl opt">,</span>
paramtype2<span class="hl opt">=</span><span class="hl str">"facedir"</span><span class="hl opt">,</span>
walkable <span class="hl opt">=</span> <span class="hl kwa">false</span><span class="hl opt">,</span>
selection_box <span class="hl opt">= {</span>
<span class="hl kwb">type</span> <span class="hl opt">=</span> <span class="hl str">"fixed"</span><span class="hl opt">,</span>
fixed <span class="hl opt">= {-</span><span class="hl num">1</span><span class="hl opt">/</span><span class="hl num">6</span><span class="hl opt">, -</span><span class="hl num">1</span><span class="hl opt">/</span><span class="hl num">2</span><span class="hl opt">, -</span><span class="hl num">1</span><span class="hl opt">/</span><span class="hl num">6</span><span class="hl opt">,</span> <span class="hl num">1</span><span class="hl opt">/</span><span class="hl num">6</span><span class="hl opt">,</span> <span class="hl num">1</span><span class="hl opt">/</span><span class="hl num">4</span><span class="hl opt">,</span> <span class="hl num">1</span><span class="hl opt">/</span><span class="hl num">6</span><span class="hl opt">},</span>
<span class="hl opt">},</span>
mesh <span class="hl opt">=</span> <span class="hl str">"at_il_tcb_node.obj"</span><span class="hl opt">,</span>
tiles <span class="hl opt">= {</span><span class="hl str">"at_il_tcb_node.png"</span><span class="hl opt">},</span>
description<span class="hl opt">=</span><span class="hl str">"Track Circuit Break"</span><span class="hl opt">,</span>
sunlight_propagates<span class="hl opt">=</span><span class="hl kwa">true</span><span class="hl opt">,</span>
groups <span class="hl opt">= {</span>
cracky<span class="hl opt">=</span><span class="hl num">3</span><span class="hl opt">,</span>
not_blocking_trains<span class="hl opt">=</span><span class="hl num">1</span><span class="hl opt">,</span>
<span class="hl slc">--save_in_at_nodedb=2,</span>
at_il_track_circuit_break <span class="hl opt">=</span> <span class="hl num">1</span><span class="hl opt">,</span>
<span class="hl opt">},</span>
after_place_node <span class="hl opt">=</span> <span class="hl kwa">function</span><span class="hl opt">(</span>pos<span class="hl opt">,</span> node<span class="hl opt">,</span> player<span class="hl opt">)</span>
<span class="hl kwa">local</span> meta <span class="hl opt">=</span> minetest<span class="hl opt">.</span><span class="hl kwd">get_meta</span><span class="hl opt">(</span>pos<span class="hl opt">)</span>
meta<span class="hl opt">:</span><span class="hl kwd">set_string</span><span class="hl opt">(</span><span class="hl str">"infotext"</span><span class="hl opt">,</span> <span class="hl str">"Unconfigured Track Circuit Break, right-click to assign."</span><span class="hl opt">)</span>
<span class="hl kwa">end</span><span class="hl opt">,</span>
on_rightclick <span class="hl opt">=</span> <span class="hl kwa">function</span><span class="hl opt">(</span>pos<span class="hl opt">,</span> node<span class="hl opt">,</span> player<span class="hl opt">)</span>
<span class="hl kwa">local</span> pname <span class="hl opt">=</span> player<span class="hl opt">:</span><span class="hl kwd">get_player_name</span><span class="hl opt">()</span>
<span class="hl kwa">if not</span> minetest<span class="hl opt">.</span><span class="hl kwd">check_player_privs</span><span class="hl opt">(</span>pname<span class="hl opt">,</span> <span class="hl str">"interlocking"</span><span class="hl opt">)</span> <span class="hl kwa">then</span>
minetest<span class="hl opt">.</span><span class="hl kwd">chat_send_player</span><span class="hl opt">(</span>pname<span class="hl opt">,</span> <span class="hl str">"Insufficient privileges to use this!"</span><span class="hl opt">)</span>
<span class="hl kwa">return</span>
<span class="hl kwa">end</span>
<span class="hl kwa">local</span> meta <span class="hl opt">=</span> minetest<span class="hl opt">.</span><span class="hl kwd">get_meta</span><span class="hl opt">(</span>pos<span class="hl opt">)</span>
<span class="hl kwa">local</span> tcbpts <span class="hl opt">=</span> meta<span class="hl opt">:</span><span class="hl kwd">get_string</span><span class="hl opt">(</span><span class="hl str">"tcb_pos"</span><span class="hl opt">)</span>
<span class="hl kwa">if</span> tcbpts <span class="hl opt">~=</span> <span class="hl str">""</span> <span class="hl kwa">then</span>
<span class="hl kwa">local</span> tcbpos <span class="hl opt">=</span> minetest<span class="hl opt">.</span><span class="hl kwd">string_to_pos</span><span class="hl opt">(</span>tcbpts<span class="hl opt">)</span>
advtrains<span class="hl opt">.</span>interlocking<span class="hl opt">.</span><span class="hl kwd">show_tcb_form</span><span class="hl opt">(</span>tcbpos<span class="hl opt">,</span> pname<span class="hl opt">)</span>
<span class="hl kwa">else</span>
<span class="hl kwa">if not</span> minetest<span class="hl opt">.</span><span class="hl kwd">check_player_privs</span><span class="hl opt">(</span>pname<span class="hl opt">,</span> <span class="hl str">"interlocking"</span><span class="hl opt">)</span> <span class="hl kwa">then</span>
minetest<span class="hl opt">.</span><span class="hl kwd">chat_send_player</span><span class="hl opt">(</span>pname<span class="hl opt">,</span> <span class="hl str">"Insufficient privileges to use this!"</span><span class="hl opt">)</span>
<span class="hl kwa">return</span>
<span class="hl kwa">end</span>
<span class="hl slc">--unconfigured</span>
minetest<span class="hl opt">.</span><span class="hl kwd">chat_send_player</span><span class="hl opt">(</span>pname<span class="hl opt">,</span> <span class="hl str">"Configuring TCB: Please punch the rail you want to assign this TCB to."</span><span class="hl opt">)</span>
players_assign_tcb<span class="hl opt">[</span>pname<span class="hl opt">] =</span> pos
<span class="hl kwa">end</span>
<span class="hl kwa">end</span><span class="hl opt">,</span>
<span class="hl slc">--on_punch = function(pos, node, player)</span>
<span class="hl slc">-- local meta = minetest.get_meta(pos)</span>
<span class="hl slc">-- local tcbpts = meta:get_string("tcb_pos")</span>
<span class="hl slc">-- if tcbpts ~= "" then</span>
<span class="hl slc">-- local tcbpos = minetest.string_to_pos(tcbpts)</span>
<span class="hl slc">-- advtrains.interlocking.show_tcb_marker(tcbpos)</span>
<span class="hl slc">-- end </span>
<span class="hl slc">--end,</span>
can_dig <span class="hl opt">=</span> <span class="hl kwa">function</span><span class="hl opt">(</span>pos<span class="hl opt">,</span> player<span class="hl opt">)</span>
<span class="hl kwa">local</span> pname <span class="hl opt">=</span> player<span class="hl opt">:</span><span class="hl kwd">get_player_name</span><span class="hl opt">()</span>
<span class="hl slc">-- Those markers can only be dug when all adjacent TS's are set</span>
<span class="hl slc">-- as EOI.</span>
<span class="hl kwa">local</span> meta <span class="hl opt">=</span> minetest<span class="hl opt">.</span><span class="hl kwd">get_meta</span><span class="hl opt">(</span>pos<span class="hl opt">)</span>
<span class="hl kwa">local</span> tcbpts <span class="hl opt">=</span> meta<span class="hl opt">:</span><span class="hl kwd">get_string</span><span class="hl opt">(</span><span class="hl str">"tcb_pos"</span><span class="hl opt">)</span>
<span class="hl kwa">if</span> tcbpts <span class="hl opt">~=</span> <span class="hl str">""</span> <span class="hl kwa">then</span>
<span class="hl kwa">if not</span> minetest<span class="hl opt">.</span><span class="hl kwd">check_player_privs</span><span class="hl opt">(</span>pname<span class="hl opt">,</span> <span class="hl str">"interlocking"</span><span class="hl opt">)</span> <span class="hl kwa">then</span>
minetest<span class="hl opt">.</span><span class="hl kwd">chat_send_player</span><span class="hl opt">(</span>pname<span class="hl opt">,</span> <span class="hl str">"Insufficient privileges to use this!"</span><span class="hl opt">)</span>
<span class="hl kwa">return</span>
<span class="hl kwa">end</span>
<span class="hl kwa">local</span> tcbpos <span class="hl opt">=</span> minetest<span class="hl opt">.</span><span class="hl kwd">string_to_pos</span><span class="hl opt">(</span>tcbpts<span class="hl opt">)</span>
<span class="hl kwa">local</span> tcb <span class="hl opt">=</span> ildb<span class="hl opt">.</span><span class="hl kwd">get_tcb</span><span class="hl opt">(</span>tcbpos<span class="hl opt">)</span>
<span class="hl kwa">if not</span> tcb <span class="hl kwa">then return true end</span>
<span class="hl kwa">for</span> connid<span class="hl opt">=</span><span class="hl num">1</span><span class="hl opt">,</span><span class="hl num">2</span> <span class="hl kwa">do</span>
<span class="hl kwa">if</span> tcb<span class="hl opt">[</span>connid<span class="hl opt">].</span>ts_id <span class="hl kwa">then</span>
<span class="hl kwa">return false</span>
<span class="hl kwa">end</span>
<span class="hl kwa">end</span>
<span class="hl kwa">end</span>
<span class="hl kwa">return true</span>
<span class="hl kwa">end</span><span class="hl opt">,</span>
after_dig_node <span class="hl opt">=</span> <span class="hl kwa">function</span><span class="hl opt">(</span>pos<span class="hl opt">,</span> oldnode<span class="hl opt">,</span> oldmetadata<span class="hl opt">,</span> player<span class="hl opt">)</span>
<span class="hl kwa">if not</span> oldmetadata <span class="hl kwa">or not</span> oldmetadata<span class="hl opt">.</span>fields <span class="hl kwa">then return end</span>
<span class="hl kwa">local</span> tcbpts <span class="hl opt">=</span> oldmetadata<span class="hl opt">.</span>fields<span class="hl opt">.</span>tcb_pos
<span class="hl kwa">if</span> tcbpts <span class="hl kwa">and</span> tcbpts <span class="hl opt">~=</span> <span class="hl str">""</span> <span class="hl kwa">then</span>
<span class="hl kwa">local</span> tcbpos <span class="hl opt">=</span> minetest<span class="hl opt">.</span><span class="hl kwd">string_to_pos</span><span class="hl opt">(</span>tcbpts<span class="hl opt">)</span>
ildb<span class="hl opt">.</span><span class="hl kwd">remove_tcb</span><span class="hl opt">(</span>tcbpos<span class="hl opt">)</span>
<span class="hl kwa">end</span>
<span class="hl kwa">end</span><span class="hl opt">,</span>
<span class="hl opt">})</span>
minetest<span class="hl opt">.</span><span class="hl kwd">register_on_punchnode</span><span class="hl opt">(</span><span class="hl kwa">function</span><span class="hl opt">(</span>pos<span class="hl opt">,</span> node<span class="hl opt">,</span> player<span class="hl opt">,</span> pointed_thing<span class="hl opt">)</span>
<span class="hl kwa">local</span> pname <span class="hl opt">=</span> player<span class="hl opt">:</span><span class="hl kwd">get_player_name</span><span class="hl opt">()</span>
<span class="hl kwa">if not</span> minetest<span class="hl opt">.</span><span class="hl kwd">check_player_privs</span><span class="hl opt">(</span>pname<span class="hl opt">,</span> <span class="hl str">"interlocking"</span><span class="hl opt">)</span> <span class="hl kwa">then</span>
<span class="hl kwa">return</span>
<span class="hl kwa">end</span>
<span class="hl slc">-- TCB assignment</span>
<span class="hl kwa">local</span> tcbnpos <span class="hl opt">=</span> players_assign_tcb<span class="hl opt">[</span>pname<span class="hl opt">]</span>
<span class="hl kwa">if</span> tcbnpos <span class="hl kwa">then</span>
<span class="hl kwa">if</span> vector<span class="hl opt">.</span><span class="hl kwd">distance</span><span class="hl opt">(</span>pos<span class="hl opt">,</span> tcbnpos<span class="hl opt">)<=</span><span class="hl num">20</span> <span class="hl kwa">then</span>
<span class="hl kwa">local</span> node_ok<span class="hl opt">,</span> conns<span class="hl opt">,</span> rhe <span class="hl opt">=</span> advtrains<span class="hl opt">.</span><span class="hl kwd">get_rail_info_at</span><span class="hl opt">(</span>pos<span class="hl opt">,</span> advtrains<span class="hl opt">.</span>all_tracktypes<span class="hl opt">)</span>
<span class="hl kwa">if</span> node_ok <span class="hl kwa">and</span> <span class="hl opt">#</span>conns <span class="hl opt">==</span> <span class="hl num">2</span> <span class="hl kwa">then</span>
<span class="hl kwa">local</span> ok <span class="hl opt">=</span> ildb<span class="hl opt">.</span><span class="hl kwd">create_tcb</span><span class="hl opt">(</span>pos<span class="hl opt">)</span>
<span class="hl kwa">if not</span> ok <span class="hl kwa">then</span>
minetest<span class="hl opt">.</span><span class="hl kwd">chat_send_player</span><span class="hl opt">(</span>pname<span class="hl opt">,</span> <span class="hl str">"Configuring TCB: TCB already exists at this position. Aborted."</span><span class="hl opt">)</span>
<span class="hl kwa">end</span>
ildb<span class="hl opt">.</span><span class="hl kwd">sync_tcb_neighbors</span><span class="hl opt">(</span>pos<span class="hl opt">,</span> <span class="hl num">1</span><span class="hl opt">)</span>
ildb<span class="hl opt">.</span><span class="hl kwd">sync_tcb_neighbors</span><span class="hl opt">(</span>pos<span class="hl opt">,</span> <span class="hl num">2</span><span class="hl opt">)</span>
<span class="hl kwa">local</span> meta <span class="hl opt">=</span> minetest<span class="hl opt">.</span><span class="hl kwd">get_meta</span><span class="hl opt">(</span>tcbnpos<span class="hl opt">)</span>
meta<span class="hl opt">:</span><span class="hl kwd">set_string</span><span class="hl opt">(</span><span class="hl str">"tcb_pos"</span><span class="hl opt">,</span> minetest<span class="hl opt">.</span><span class="hl kwd">pos_to_string</span><span class="hl opt">(</span>pos<span class="hl opt">))</span>
meta<span class="hl opt">:</span><span class="hl kwd">set_string</span><span class="hl opt">(</span><span class="hl str">"infotext"</span><span class="hl opt">,</span> <span class="hl str">"TCB assigned to "</span><span class="hl opt">..</span>minetest<span class="hl opt">.</span><span class="hl kwd">pos_to_string</span><span class="hl opt">(</span>pos<span class="hl opt">))</span>
minetest<span class="hl opt">.</span><span class="hl kwd">chat_send_player</span><span class="hl opt">(</span>pname<span class="hl opt">,</span> <span class="hl str">"Configuring TCB: Successfully configured TCB"</span><span class="hl opt">)</span>
<span class="hl kwa">else</span>
minetest<span class="hl opt">.</span><span class="hl kwd">chat_send_player</span><span class="hl opt">(</span>pname<span class="hl opt">,</span> <span class="hl str">"Configuring TCB: This is not a normal two-connection rail! Aborted."</span><span class="hl opt">)</span>
<span class="hl kwa">end</span>
<span class="hl kwa">else</span>
minetest<span class="hl opt">.</span><span class="hl kwd">chat_send_player</span><span class="hl opt">(</span>pname<span class="hl opt">,</span> <span class="hl str">"Configuring TCB: Node is too far away. Aborted."</span><span class="hl opt">)</span>
<span class="hl kwa">end</span>
players_assign_tcb<span class="hl opt">[</span>pname<span class="hl opt">] =</span> <span class="hl kwa">nil</span>
<span class="hl kwa">end</span>
<span class="hl slc">-- Signal assignment</span>
<span class="hl kwa">local</span> sigd <span class="hl opt">=</span> players_assign_signal<span class="hl opt">[</span>pname<span class="hl opt">]</span>
<span class="hl kwa">if</span> sigd <span class="hl kwa">then</span>
<span class="hl kwa">if</span> vector<span class="hl opt">.</span><span class="hl kwd">distance</span><span class="hl opt">(</span>pos<span class="hl opt">,</span> sigd<span class="hl opt">.</span>p<span class="hl opt">)<=</span><span class="hl num">50</span> <span class="hl kwa">then</span>
<span class="hl kwa">local</span> is_signal <span class="hl opt">=</span> minetest<span class="hl opt">.</span><span class="hl kwd">get_item_group</span><span class="hl opt">(</span>node<span class="hl opt">.</span>name<span class="hl opt">,</span> <span class="hl str">"advtrains_signal"</span><span class="hl opt">) >=</span> <span class="hl num">2</span>
<span class="hl kwa">if</span> is_signal <span class="hl kwa">then</span>
<span class="hl kwa">local</span> ndef <span class="hl opt">=</span> minetest<span class="hl opt">.</span>registered_nodes<span class="hl opt">[</span>node<span class="hl opt">.</span>name<span class="hl opt">]</span>
<span class="hl kwa">if</span> ndef <span class="hl kwa">and</span> ndef<span class="hl opt">.</span>advtrains <span class="hl kwa">and</span> ndef<span class="hl opt">.</span>advtrains<span class="hl opt">.</span>set_aspect <span class="hl kwa">then</span>
<span class="hl kwa">local</span> tcbs <span class="hl opt">=</span> ildb<span class="hl opt">.</span><span class="hl kwd">get_tcbs</span><span class="hl opt">(</span>sigd<span class="hl opt">)</span>
<span class="hl kwa">if</span> tcbs <span class="hl kwa">then</span>
tcbs<span class="hl opt">.</span>signal <span class="hl opt">=</span> pos
<span class="hl kwa">if not</span> tcbs<span class="hl opt">.</span>signal_name <span class="hl kwa">then</span>
tcbs<span class="hl opt">.</span>signal_name <span class="hl opt">=</span> <span class="hl str">"Signal at "</span><span class="hl opt">..</span>minetest<span class="hl opt">.</span><span class="hl kwd">pos_to_string</span><span class="hl opt">(</span>sigd<span class="hl opt">.</span>p<span class="hl opt">)</span>
<span class="hl kwa">end</span>
<span class="hl kwa">if not</span> tcbs<span class="hl opt">.</span>routes <span class="hl kwa">then</span>
tcbs<span class="hl opt">.</span>routes <span class="hl opt">= {}</span>
<span class="hl kwa">end</span>
ildb<span class="hl opt">.</span><span class="hl kwd">set_sigd_for_signal</span><span class="hl opt">(</span>pos<span class="hl opt">,</span> sigd<span class="hl opt">)</span>
minetest<span class="hl opt">.</span><span class="hl kwd">chat_send_player</span><span class="hl opt">(</span>pname<span class="hl opt">,</span> <span class="hl str">"Configuring TCB: Successfully assigned signal."</span><span class="hl opt">)</span>
advtrains<span class="hl opt">.</span>interlocking<span class="hl opt">.</span><span class="hl kwd">show_ip_form</span><span class="hl opt">(</span>pos<span class="hl opt">,</span> pname<span class="hl opt">,</span> <span class="hl kwa">true</span><span class="hl opt">)</span>
<span class="hl kwa">else</span>
minetest<span class="hl opt">.</span><span class="hl kwd">chat_send_player</span><span class="hl opt">(</span>pname<span class="hl opt">,</span> <span class="hl str">"Configuring TCB: Internal error, TCBS doesn't exist. Aborted."</span><span class="hl opt">)</span>
<span class="hl kwa">end</span>
<span class="hl kwa">else</span>
minetest<span class="hl opt">.</span><span class="hl kwd">chat_send_player</span><span class="hl opt">(</span>pname<span class="hl opt">,</span> <span class="hl str">"Configuring TCB: Cannot use static signals for routesetting. Aborted."</span><span class="hl opt">)</span>
<span class="hl kwa">end</span>
<span class="hl kwa">else</span>
minetest<span class="hl opt">.</span><span class="hl kwd">chat_send_player</span><span class="hl opt">(</span>pname<span class="hl opt">,</span> <span class="hl str">"Configuring TCB: Not a compatible signal. Aborted."</span><span class="hl opt">)</span>
<span class="hl kwa">end</span>
<span class="hl kwa">else</span>
minetest<span class="hl opt">.</span><span class="hl kwd">chat_send_player</span><span class="hl opt">(</span>pname<span class="hl opt">,</span> <span class="hl str">"Configuring TCB: Node is too far away. Aborted."</span><span class="hl opt">)</span>
<span class="hl kwa">end</span>
players_assign_signal<span class="hl opt">[</span>pname<span class="hl opt">] =</span> <span class="hl kwa">nil</span>
<span class="hl kwa">end</span>
<span class="hl kwa">end</span><span class="hl opt">)</span>
<span class="hl slc">-- TCB Form</span>
<span class="hl kwa">local function</span> <span class="hl kwd">mktcbformspec</span><span class="hl opt">(</span>tcbs<span class="hl opt">,</span> btnpref<span class="hl opt">,</span> offset<span class="hl opt">,</span> pname<span class="hl opt">)</span>
<span class="hl kwa">local</span> form <span class="hl opt">=</span> <span class="hl str">""</span>
<span class="hl kwa">local</span> ts
<span class="hl kwa">if</span> tcbs<span class="hl opt">.</span>ts_id <span class="hl kwa">then</span>
ts <span class="hl opt">=</span> ildb<span class="hl opt">.</span><span class="hl kwd">get_ts</span><span class="hl opt">(</span>tcbs<span class="hl opt">.</span>ts_id<span class="hl opt">)</span>
<span class="hl kwa">end</span>
<span class="hl kwa">if</span> ts <span class="hl kwa">then</span>
form <span class="hl opt">=</span> form<span class="hl opt">..</span><span class="hl str">"label[0.5,"</span><span class="hl opt">..</span>offset<span class="hl opt">..</span><span class="hl str">";Side "</span><span class="hl opt">..</span>btnpref<span class="hl opt">..</span><span class="hl str">": "</span><span class="hl opt">..</span>ts<span class="hl opt">.</span>name<span class="hl opt">..</span><span class="hl str">"]"</span>
form <span class="hl opt">=</span> form<span class="hl opt">..</span><span class="hl str">"button[0.5,"</span><span class="hl opt">..(</span>offset<span class="hl opt">+</span><span class="hl num">0.5</span><span class="hl opt">)..</span><span class="hl str">";5,1;"</span><span class="hl opt">..</span>btnpref<span class="hl opt">..</span><span class="hl str">"_gotots;Show track section]"</span>
form <span class="hl opt">=</span> form<span class="hl opt">..</span><span class="hl str">"button[0.5,"</span><span class="hl opt">..(</span>offset<span class="hl opt">+</span><span class="hl num">1.5</span><span class="hl opt">)..</span><span class="hl str">";2.5,1;"</span><span class="hl opt">..</span>btnpref<span class="hl opt">..</span><span class="hl str">"_update;Update near TCBs]"</span>
form <span class="hl opt">=</span> form<span class="hl opt">..</span><span class="hl str">"button[3 ,"</span><span class="hl opt">..(</span>offset<span class="hl opt">+</span><span class="hl num">1.5</span><span class="hl opt">)..</span><span class="hl str">";2.5,1;"</span><span class="hl opt">..</span>btnpref<span class="hl opt">..</span><span class="hl str">"_remove;Remove from section]"</span>
<span class="hl kwa">else</span>
tcbs<span class="hl opt">.</span>ts_id <span class="hl opt">=</span> <span class="hl kwa">nil</span>
form <span class="hl opt">=</span> form<span class="hl opt">..</span><span class="hl str">"label[0.5,"</span><span class="hl opt">..</span>offset<span class="hl opt">..</span><span class="hl str">";Side "</span><span class="hl opt">..</span>btnpref<span class="hl opt">..</span><span class="hl str">": "</span><span class="hl opt">..</span><span class="hl str">"End of interlocking]"</span>
form <span class="hl opt">=</span> form<span class="hl opt">..</span><span class="hl str">"button[0.5,"</span><span class="hl opt">..(</span>offset<span class="hl opt">+</span><span class="hl num">0.5</span><span class="hl opt">)..</span><span class="hl str">";5,1;"</span><span class="hl opt">..</span>btnpref<span class="hl opt">..</span><span class="hl str">"_makeil;Create Interlocked Track Section]"</span>
<span class="hl slc">--if tcbs.section_free then</span>
<span class="hl slc">--form = form.."button[0.5,"..(offset+1.5)..";5,1;"..btnpref.."_setlocked;Section is free]"</span>
<span class="hl slc">--else</span>
<span class="hl slc">--form = form.."button[0.5,"..(offset+1.5)..";5,1;"..btnpref.."_setfree;Section is blocked]" </span>
<span class="hl slc">--end</span>
<span class="hl kwa">end</span>
<span class="hl kwa">if</span> tcbs<span class="hl opt">.</span>signal <span class="hl kwa">then</span>
form <span class="hl opt">=</span> form<span class="hl opt">..</span><span class="hl str">"button[0.5,"</span><span class="hl opt">..(</span>offset<span class="hl opt">+</span><span class="hl num">2.5</span><span class="hl opt">)..</span><span class="hl str">";5,1;"</span><span class="hl opt">..</span>btnpref<span class="hl opt">..</span><span class="hl str">"_sigdia;Signalling]"</span>
<span class="hl kwa">else</span>
form <span class="hl opt">=</span> form<span class="hl opt">..</span><span class="hl str">"button[0.5,"</span><span class="hl opt">..(</span>offset<span class="hl opt">+</span><span class="hl num">2.5</span><span class="hl opt">)..</span><span class="hl str">";5,1;"</span><span class="hl opt">..</span>btnpref<span class="hl opt">..</span><span class="hl str">"_asnsig;Assign a signal]"</span>
<span class="hl kwa">end</span>
<span class="hl kwa">return</span> form
<span class="hl kwa">end</span>
<span class="hl kwa">function</span> advtrains<span class="hl opt">.</span>interlocking<span class="hl opt">.</span><span class="hl kwd">show_tcb_form</span><span class="hl opt">(</span>pos<span class="hl opt">,</span> pname<span class="hl opt">)</span>
<span class="hl kwa">if not</span> minetest<span class="hl opt">.</span><span class="hl kwd">check_player_privs</span><span class="hl opt">(</span>pname<span class="hl opt">,</span> <span class="hl str">"interlocking"</span><span class="hl opt">)</span> <span class="hl kwa">then</span>
minetest<span class="hl opt">.</span><span class="hl kwd">chat_send_player</span><span class="hl opt">(</span>pname<span class="hl opt">,</span> <span class="hl str">"Insufficient privileges to use this!"</span><span class="hl opt">)</span>
<span class="hl kwa">return</span>
<span class="hl kwa">end</span>
<span class="hl kwa">local</span> tcb <span class="hl opt">=</span> ildb<span class="hl opt">.</span><span class="hl kwd">get_tcb</span><span class="hl opt">(</span>pos<span class="hl opt">)</span>
<span class="hl kwa">if not</span> tcb <span class="hl kwa">then return end</span>
<span class="hl kwa">local</span> form <span class="hl opt">=</span> <span class="hl str">"size[6,9] label[0.5,0.5;Track Circuit Break Configuration]"</span>
form <span class="hl opt">=</span> form <span class="hl opt">..</span> <span class="hl kwd">mktcbformspec</span><span class="hl opt">(</span>tcb<span class="hl opt">[</span><span class="hl num">1</span><span class="hl opt">],</span> <span class="hl str">"A"</span><span class="hl opt">,</span> <span class="hl num">1</span><span class="hl opt">,</span> pname<span class="hl opt">)</span>
form <span class="hl opt">=</span> form <span class="hl opt">..</span> <span class="hl kwd">mktcbformspec</span><span class="hl opt">(</span>tcb<span class="hl opt">[</span><span class="hl num">2</span><span class="hl opt">],</span> <span class="hl str">"B"</span><span class="hl opt">,</span> <span class="hl num">5</span><span class="hl opt">,</span> pname<span class="hl opt">)</span>
minetest<span class="hl opt">.</span><span class="hl kwd">show_formspec</span><span class="hl opt">(</span>pname<span class="hl opt">,</span> <span class="hl str">"at_il_tcbconfig_"</span><span class="hl opt">..</span>minetest<span class="hl opt">.</span><span class="hl kwd">pos_to_string</span><span class="hl opt">(</span>pos<span class="hl opt">),</span> form<span class="hl opt">)</span>
advtrains<span class="hl opt">.</span>interlocking<span class="hl opt">.</span><span class="hl kwd">show_tcb_marker</span><span class="hl opt">(</span>pos<span class="hl opt">)</span>
<span class="hl kwa">end</span>
<span class="hl slc">--helper: length of nil table is 0</span>
<span class="hl kwa">local function</span> <span class="hl kwd">nlen</span><span class="hl opt">(</span>t<span class="hl opt">)</span>
<span class="hl kwa">if not</span> t <span class="hl kwa">then return</span> <span class="hl num">0</span> <span class="hl kwa">end</span>
<span class="hl kwa">return</span> <span class="hl opt">#</span>t
<span class="hl kwa">end</span>
minetest<span class="hl opt">.</span><span class="hl kwd">register_on_player_receive_fields</span><span class="hl opt">(</span><span class="hl kwa">function</span><span class="hl opt">(</span>player<span class="hl opt">,</span> formname<span class="hl opt">,</span> fields<span class="hl opt">)</span>
<span class="hl kwa">local</span> pname <span class="hl opt">=</span> player<span class="hl opt">:</span><span class="hl kwd">get_player_name</span><span class="hl opt">()</span>
<span class="hl kwa">if not</span> minetest<span class="hl opt">.</span><span class="hl kwd">check_player_privs</span><span class="hl opt">(</span>pname<span class="hl opt">,</span> <span class="hl str">"interlocking"</span><span class="hl opt">)</span> <span class="hl kwa">then</span>
<span class="hl kwa">return</span>
<span class="hl kwa">end</span>
<span class="hl kwa">local</span> pts <span class="hl opt">=</span> <span class="hl kwb">string</span><span class="hl opt">.</span><span class="hl kwd">match</span><span class="hl opt">(</span>formname<span class="hl opt">,</span> <span class="hl str">"^at_il_tcbconfig_(.+)$"</span><span class="hl opt">)</span>
<span class="hl kwa">local</span> pos
<span class="hl kwa">if</span> pts <span class="hl kwa">then</span>
pos <span class="hl opt">=</span> minetest<span class="hl opt">.</span><span class="hl kwd">string_to_pos</span><span class="hl opt">(</span>pts<span class="hl opt">)</span>
<span class="hl kwa">end</span>
<span class="hl kwa">if</span> pos <span class="hl kwa">and not</span> fields<span class="hl opt">.</span>quit <span class="hl kwa">then</span>
<span class="hl kwa">local</span> tcb <span class="hl opt">=</span> ildb<span class="hl opt">.</span><span class="hl kwd">get_tcb</span><span class="hl opt">(</span>pos<span class="hl opt">)</span>
<span class="hl kwa">if not</span> tcb <span class="hl kwa">then return end</span>
<span class="hl kwa">local</span> f_gotots <span class="hl opt">= {</span>fields<span class="hl opt">.</span>A_gotots<span class="hl opt">,</span> fields<span class="hl opt">.</span>B_gotots<span class="hl opt">}</span>
<span class="hl kwa">local</span> f_update <span class="hl opt">= {</span>fields<span class="hl opt">.</span>A_update<span class="hl opt">,</span> fields<span class="hl opt">.</span>B_update<span class="hl opt">}</span>
<span class="hl kwa">local</span> f_remove <span class="hl opt">= {</span>fields<span class="hl opt">.</span>A_remove<span class="hl opt">,</span> fields<span class="hl opt">.</span>B_remove<span class="hl opt">}</span>
<span class="hl kwa">local</span> f_makeil <span class="hl opt">= {</span>fields<span class="hl opt">.</span>A_makeil<span class="hl opt">,</span> fields<span class="hl opt">.</span>B_makeil<span class="hl opt">}</span>
<span class="hl kwa">local</span> f_setlocked <span class="hl opt">= {</span>fields<span class="hl opt">.</span>A_setlocked<span class="hl opt">,</span> fields<span class="hl opt">.</span>B_setlocked<span class="hl opt">}</span>
<span class="hl kwa">local</span> f_setfree <span class="hl opt">= {</span>fields<span class="hl opt">.</span>A_setfree<span class="hl opt">,</span> fields<span class="hl opt">.</span>B_setfree<span class="hl opt">}</span>
<span class="hl kwa">local</span> f_asnsig <span class="hl opt">= {</span>fields<span class="hl opt">.</span>A_asnsig<span class="hl opt">,</span> fields<span class="hl opt">.</span>B_asnsig<span class="hl opt">}</span>
<span class="hl kwa">local</span> f_sigdia <span class="hl opt">= {</span>fields<span class="hl opt">.</span>A_sigdia<span class="hl opt">,</span> fields<span class="hl opt">.</span>B_sigdia<span class="hl opt">}</span>
<span class="hl kwa">for</span> connid<span class="hl opt">=</span><span class="hl num">1</span><span class="hl opt">,</span><span class="hl num">2</span> <span class="hl kwa">do</span>
<span class="hl kwa">local</span> tcbs <span class="hl opt">=</span> tcb<span class="hl opt">[</span>connid<span class="hl opt">]</span>
<span class="hl kwa">if</span> tcbs<span class="hl opt">.</span>ts_id <span class="hl kwa">then</span>
<span class="hl kwa">if</span> f_gotots<span class="hl opt">[</span>connid<span class="hl opt">]</span> <span class="hl kwa">then</span>
advtrains<span class="hl opt">.</span>interlocking<span class="hl opt">.</span><span class="hl kwd">show_ts_form</span><span class="hl opt">(</span>tcbs<span class="hl opt">.</span>ts_id<span class="hl opt">,</span> pname<span class="hl opt">)</span>
<span class="hl kwa">return</span>
<span class="hl kwa">end</span>
<span class="hl kwa">if</span> f_update<span class="hl opt">[</span>connid<span class="hl opt">]</span> <span class="hl kwa">then</span>
ildb<span class="hl opt">.</span><span class="hl kwd">sync_tcb_neighbors</span><span class="hl opt">(</span>pos<span class="hl opt">,</span> connid<span class="hl opt">)</span>
<span class="hl kwa">end</span>
<span class="hl kwa">if</span> f_remove<span class="hl opt">[</span>connid<span class="hl opt">]</span> <span class="hl kwa">then</span>
ildb<span class="hl opt">.</span><span class="hl kwd">remove_from_interlocking</span><span class="hl opt">({</span>p<span class="hl opt">=</span>pos<span class="hl opt">,</span> s<span class="hl opt">=</span>connid<span class="hl opt">})</span>
<span class="hl kwa">end</span>
<span class="hl kwa">else</span>
<span class="hl kwa">if</span> f_makeil<span class="hl opt">[</span>connid<span class="hl opt">]</span> <span class="hl kwa">then</span>
<span class="hl slc">-- try sinc_tcb_neighbors first</span>
ildb<span class="hl opt">.</span><span class="hl kwd">sync_tcb_neighbors</span><span class="hl opt">(</span>pos<span class="hl opt">,</span> connid<span class="hl opt">)</span>
<span class="hl slc">-- if that didn't work, create new section</span>
<span class="hl kwa">if not</span> tcbs<span class="hl opt">.</span>ts_id <span class="hl kwa">then</span>
ildb<span class="hl opt">.</span><span class="hl kwd">create_ts</span><span class="hl opt">({</span>p<span class="hl opt">=</span>pos<span class="hl opt">,</span> s<span class="hl opt">=</span>connid<span class="hl opt">})</span>
ildb<span class="hl opt">.</span><span class="hl kwd">sync_tcb_neighbors</span><span class="hl opt">(</span>pos<span class="hl opt">,</span> connid<span class="hl opt">)</span>
<span class="hl kwa">end</span>
<span class="hl kwa">end</span>
<span class="hl slc">-- non-interlocked</span>
<span class="hl kwa">if</span> f_setfree<span class="hl opt">[</span>connid<span class="hl opt">]</span> <span class="hl kwa">then</span>
tcbs<span class="hl opt">.</span>section_free <span class="hl opt">=</span> <span class="hl kwa">true</span>
<span class="hl kwa">end</span>
<span class="hl kwa">if</span> f_setlocked<span class="hl opt">[</span>connid<span class="hl opt">]</span> <span class="hl kwa">then</span>
tcbs<span class="hl opt">.</span>section_free <span class="hl opt">=</span> <span class="hl kwa">nil</span>
<span class="hl kwa">end</span>
<span class="hl kwa">end</span>
<span class="hl kwa">if</span> f_asnsig<span class="hl opt">[</span>connid<span class="hl opt">]</span> <span class="hl kwa">and not</span> tcbs<span class="hl opt">.</span>signal <span class="hl kwa">then</span>
minetest<span class="hl opt">.</span><span class="hl kwd">chat_send_player</span><span class="hl opt">(</span>pname<span class="hl opt">,</span> <span class="hl str">"Configuring TCB: Please punch the signal to assign."</span><span class="hl opt">)</span>
players_assign_signal<span class="hl opt">[</span>pname<span class="hl opt">] = {</span>p<span class="hl opt">=</span>pos<span class="hl opt">,</span> s<span class="hl opt">=</span>connid<span class="hl opt">}</span>
minetest<span class="hl opt">.</span><span class="hl kwd">close_formspec</span><span class="hl opt">(</span>pname<span class="hl opt">,</span> formname<span class="hl opt">)</span>
<span class="hl kwa">return</span>
<span class="hl kwa">end</span>
<span class="hl kwa">if</span> f_sigdia<span class="hl opt">[</span>connid<span class="hl opt">]</span> <span class="hl kwa">and</span> tcbs<span class="hl opt">.</span>signal <span class="hl kwa">then</span>
advtrains<span class="hl opt">.</span>interlocking<span class="hl opt">.</span><span class="hl kwd">show_signalling_form</span><span class="hl opt">({</span>p<span class="hl opt">=</span>pos<span class="hl opt">,</span> s<span class="hl opt">=</span>connid<span class="hl opt">},</span> pname<span class="hl opt">)</span>
<span class="hl kwa">return</span>
<span class="hl kwa">end</span>
<span class="hl kwa">end</span>
advtrains<span class="hl opt">.</span>interlocking<span class="hl opt">.</span><span class="hl kwd">show_tcb_form</span><span class="hl opt">(</span>pos<span class="hl opt">,</span> pname<span class="hl opt">)</span>
<span class="hl kwa">end</span>
<span class="hl kwa">end</span><span class="hl opt">)</span>
<span class="hl slc">-- TS Formspec</span>
<span class="hl slc">-- textlist selection temporary storage</span>
<span class="hl kwa">local</span> ts_pselidx <span class="hl opt">= {}</span>
<span class="hl kwa">function</span> advtrains<span class="hl opt">.</span>interlocking<span class="hl opt">.</span><span class="hl kwd">show_ts_form</span><span class="hl opt">(</span>ts_id<span class="hl opt">,</span> pname<span class="hl opt">,</span> sel_tcb<span class="hl opt">)</span>
<span class="hl kwa">if not</span> minetest<span class="hl opt">.</span><span class="hl kwd">check_player_privs</span><span class="hl opt">(</span>pname<span class="hl opt">,</span> <span class="hl str">"interlocking"</span><span class="hl opt">)</span> <span class="hl kwa">then</span>
minetest<span class="hl opt">.</span><span class="hl kwd">chat_send_player</span><span class="hl opt">(</span>pname<span class="hl opt">,</span> <span class="hl str">"Insufficient privileges to use this!"</span><span class="hl opt">)</span>
<span class="hl kwa">return</span>
<span class="hl kwa">end</span>
<span class="hl kwa">local</span> ts <span class="hl opt">=</span> ildb<span class="hl opt">.</span><span class="hl kwd">get_ts</span><span class="hl opt">(</span>ts_id<span class="hl opt">)</span>
<span class="hl kwa">if not</span> ts_id <span class="hl kwa">then return end</span>
<span class="hl kwa">local</span> form <span class="hl opt">=</span> <span class="hl str">"size[10,10]label[0.5,0.5;Track Section Detail - "</span><span class="hl opt">..</span>ts_id<span class="hl opt">..</span><span class="hl str">"]"</span>
form <span class="hl opt">=</span> form<span class="hl opt">..</span><span class="hl str">"field[0.8,2;5.2,1;name;Section name;"</span><span class="hl opt">..</span>ts<span class="hl opt">.</span>name<span class="hl opt">..</span><span class="hl str">"]"</span>
form <span class="hl opt">=</span> form<span class="hl opt">..</span><span class="hl str">"button[5.5,1.7;1,1;setname;Set]"</span>
<span class="hl kwa">local</span> hint
<span class="hl kwa">local</span> strtab <span class="hl opt">= {}</span>
<span class="hl kwa">for</span> idx<span class="hl opt">,</span> sigd <span class="hl kwa">in</span> <span class="hl kwd">ipairs</span><span class="hl opt">(</span>ts<span class="hl opt">.</span>tc_breaks<span class="hl opt">)</span> <span class="hl kwa">do</span>
strtab<span class="hl opt">[#</span>strtab<span class="hl opt">+</span><span class="hl num">1</span><span class="hl opt">] =</span> minetest<span class="hl opt">.</span><span class="hl kwd">formspec_escape</span><span class="hl opt">(</span><span class="hl kwd">sigd_to_string</span><span class="hl opt">(</span>sigd<span class="hl opt">))</span>
advtrains<span class="hl opt">.</span>interlocking<span class="hl opt">.</span><span class="hl kwd">show_tcb_marker</span><span class="hl opt">(</span>sigd<span class="hl opt">.</span>p<span class="hl opt">)</span>
<span class="hl kwa">end</span>
form <span class="hl opt">=</span> form<span class="hl opt">..</span><span class="hl str">"textlist[0.5,3;5,3;tcblist;"</span><span class="hl opt">..</span><span class="hl kwb">table</span><span class="hl opt">.</span><span class="hl kwd">concat</span><span class="hl opt">(</span>strtab<span class="hl opt">,</span> <span class="hl str">","</span><span class="hl opt">)..</span><span class="hl str">"]"</span>
<span class="hl kwa">if</span> players_link_ts<span class="hl opt">[</span>pname<span class="hl opt">]</span> <span class="hl kwa">then</span>
<span class="hl kwa">local</span> other_id <span class="hl opt">=</span> players_link_ts<span class="hl opt">[</span>pname<span class="hl opt">]</span>
<span class="hl kwa">local</span> other_ts <span class="hl opt">=</span> ildb<span class="hl opt">.</span><span class="hl kwd">get_ts</span><span class="hl opt">(</span>other_id<span class="hl opt">)</span>
<span class="hl kwa">if</span> other_ts <span class="hl kwa">then</span>
form <span class="hl opt">=</span> form<span class="hl opt">..</span><span class="hl str">"button[5.5,3;3.5,1;mklink;Join with "</span><span class="hl opt">..</span>other_ts<span class="hl opt">.</span>name<span class="hl opt">..</span><span class="hl str">"]"</span>
form <span class="hl opt">=</span> form<span class="hl opt">..</span><span class="hl str">"button[9 ,3;0.5,1;cancellink;X]"</span>
<span class="hl kwa">end</span>
<span class="hl kwa">else</span>
form <span class="hl opt">=</span> form<span class="hl opt">..</span><span class="hl str">"button[5.5,3;4,1;link;Join into other section]"</span>
hint <span class="hl opt">=</span> <span class="hl num">1</span>
<span class="hl kwa">end</span>
form <span class="hl opt">=</span> form<span class="hl opt">..</span><span class="hl str">"button[5.5,4;4,1;dissolve;Dissolve Section]"</span>
form <span class="hl opt">=</span> form<span class="hl opt">..</span><span class="hl str">"tooltip[dissolve;This will remove the track section and set all its end points to End Of Interlocking]"</span>
<span class="hl kwa">if</span> sel_tcb <span class="hl kwa">then</span>
form <span class="hl opt">=</span> form<span class="hl opt">..</span><span class="hl str">"button[5.5,5;4,1;del_tcb;Unlink selected TCB]"</span>
hint <span class="hl opt">=</span> <span class="hl num">2</span>
<span class="hl kwa">end</span>
<span class="hl kwa">if</span> ts<span class="hl opt">.</span>route <span class="hl kwa">then</span>
form <span class="hl opt">=</span> form<span class="hl opt">..</span><span class="hl str">"label[0.5,6.1;Route is set: "</span><span class="hl opt">..</span>ts<span class="hl opt">.</span>route<span class="hl opt">.</span>rsn<span class="hl opt">..</span><span class="hl str">"]"</span>
<span class="hl kwa">elseif</span> ts<span class="hl opt">.</span>route_post <span class="hl kwa">then</span>
form <span class="hl opt">=</span> form<span class="hl opt">..</span><span class="hl str">"label[0.5,6.1;Section holds "</span><span class="hl opt">..#(</span>ts<span class="hl opt">.</span>route_post<span class="hl opt">.</span>lcks <span class="hl kwa">or</span> <span class="hl opt">{})..</span><span class="hl str">" route locks.]"</span>
<span class="hl kwa">end</span>
<span class="hl slc">-- occupying trains</span>
<span class="hl kwa">if</span> ts<span class="hl opt">.</span>trains <span class="hl kwa">and</span> <span class="hl opt">#</span>ts<span class="hl opt">.</span>trains<span class="hl opt">></span><span class="hl num">0</span> <span class="hl kwa">then</span>
form <span class="hl opt">=</span> form<span class="hl opt">..</span><span class="hl str">"label[0.5,7.1;Trains on this section:]"</span>
form <span class="hl opt">=</span> form<span class="hl opt">..</span><span class="hl str">"textlist[0.5,7.7;3,2;trnlist;"</span><span class="hl opt">..</span><span class="hl kwb">table</span><span class="hl opt">.</span><span class="hl kwd">concat</span><span class="hl opt">(</span>ts<span class="hl opt">.</span>trains<span class="hl opt">,</span> <span class="hl str">","</span><span class="hl opt">)..</span><span class="hl str">"]"</span>
<span class="hl kwa">else</span>
form <span class="hl opt">=</span> form<span class="hl opt">..</span><span class="hl str">"label[0.5,7.1;No trains on this section.]"</span>
<span class="hl kwa">end</span>
form <span class="hl opt">=</span> form<span class="hl opt">..</span><span class="hl str">"button[5.5,7;4,1;reset;Reset section state]"</span>
<span class="hl kwa">if</span> hint <span class="hl opt">==</span> <span class="hl num">1</span> <span class="hl kwa">then</span>
form <span class="hl opt">=</span> form<span class="hl opt">..</span><span class="hl str">"label[0.5,0.75;Use the 'Join' button to designate rail crosses and link not listed far-away TCBs]"</span>
<span class="hl kwa">elseif</span> hint <span class="hl opt">==</span> <span class="hl num">2</span> <span class="hl kwa">then</span>
form <span class="hl opt">=</span> form<span class="hl opt">..</span><span class="hl str">"label[0.5,0.75;Unlinking a TCB will set it to non-interlocked mode.]"</span>
<span class="hl slc">--form = form.."label[0.5,1;Trying to unlink a TCB directly connected to this track will not work.]"</span>
<span class="hl kwa">end</span>
ts_pselidx<span class="hl opt">[</span>pname<span class="hl opt">]=</span>sel_tcb
minetest<span class="hl opt">.</span><span class="hl kwd">show_formspec</span><span class="hl opt">(</span>pname<span class="hl opt">,</span> <span class="hl str">"at_il_tsconfig_"</span><span class="hl opt">..</span>ts_id<span class="hl opt">,</span> form<span class="hl opt">)</span>
<span class="hl kwa">end</span>
minetest<span class="hl opt">.</span><span class="hl kwd">register_on_player_receive_fields</span><span class="hl opt">(</span><span class="hl kwa">function</span><span class="hl opt">(</span>player<span class="hl opt">,</span> formname<span class="hl opt">,</span> fields<span class="hl opt">)</span>
<span class="hl kwa">local</span> pname <span class="hl opt">=</span> player<span class="hl opt">:</span><span class="hl kwd">get_player_name</span><span class="hl opt">()</span>
<span class="hl kwa">if not</span> minetest<span class="hl opt">.</span><span class="hl kwd">check_player_privs</span><span class="hl opt">(</span>pname<span class="hl opt">,</span> <span class="hl str">"interlocking"</span><span class="hl opt">)</span> <span class="hl kwa">then</span>
<span class="hl kwa">return</span>
<span class="hl kwa">end</span>
<span class="hl slc">-- independent of the formspec, clear this whenever some formspec event happens</span>
<span class="hl kwa">local</span> tpsi <span class="hl opt">=</span> ts_pselidx<span class="hl opt">[</span>pname<span class="hl opt">]</span>
ts_pselidx<span class="hl opt">[</span>pname<span class="hl opt">] =</span> <span class="hl kwa">nil</span>
<span class="hl kwa">local</span> ts_id <span class="hl opt">=</span> <span class="hl kwb">string</span><span class="hl opt">.</span><span class="hl kwd">match</span><span class="hl opt">(</span>formname<span class="hl opt">,</span> <span class="hl str">"^at_il_tsconfig_(.+)$"</span><span class="hl opt">)</span>
<span class="hl kwa">if</span> ts_id <span class="hl kwa">and not</span> fields<span class="hl opt">.</span>quit <span class="hl kwa">then</span>
<span class="hl kwa">local</span> ts <span class="hl opt">=</span> ildb<span class="hl opt">.</span><span class="hl kwd">get_ts</span><span class="hl opt">(</span>ts_id<span class="hl opt">)</span>
<span class="hl kwa">if not</span> ts <span class="hl kwa">then return end</span>
<span class="hl kwa">local</span> sel_tcb
<span class="hl kwa">if</span> fields<span class="hl opt">.</span>tcblist <span class="hl kwa">then</span>
<span class="hl kwa">local</span> tev <span class="hl opt">=</span> minetest<span class="hl opt">.</span><span class="hl kwd">explode_textlist_event</span><span class="hl opt">(</span>fields<span class="hl opt">.</span>tcblist<span class="hl opt">)</span>
sel_tcb <span class="hl opt">=</span> tev<span class="hl opt">.</span>index
ts_pselidx<span class="hl opt">[</span>pname<span class="hl opt">] =</span> sel_tcb
<span class="hl kwa">elseif</span> tpsi <span class="hl kwa">then</span>
sel_tcb <span class="hl opt">=</span> tpsi
<span class="hl kwa">end</span>
<span class="hl kwa">if</span> players_link_ts<span class="hl opt">[</span>pname<span class="hl opt">]</span> <span class="hl kwa">then</span>
<span class="hl kwa">if</span> fields<span class="hl opt">.</span>cancellink <span class="hl kwa">then</span>
players_link_ts<span class="hl opt">[</span>pname<span class="hl opt">] =</span> <span class="hl kwa">nil</span>
<span class="hl kwa">elseif</span> fields<span class="hl opt">.</span>mklink <span class="hl kwa">then</span>
ildb<span class="hl opt">.</span><span class="hl kwd">link_track_sections</span><span class="hl opt">(</span>players_link_ts<span class="hl opt">[</span>pname<span class="hl opt">],</span> ts_id<span class="hl opt">)</span>
players_link_ts<span class="hl opt">[</span>pname<span class="hl opt">] =</span> <span class="hl kwa">nil</span>
<span class="hl kwa">end</span>
<span class="hl kwa">end</span>
<span class="hl kwa">if</span> fields<span class="hl opt">.</span>del_tcb <span class="hl kwa">and</span> sel_tcb <span class="hl kwa">and</span> sel_tcb <span class="hl opt">></span> <span class="hl num">0</span> <span class="hl kwa">and</span> sel_tcb <span class="hl opt"><= #</span>ts<span class="hl opt">.</span>tc_breaks <span class="hl kwa">then</span>
ildb<span class="hl opt">.</span><span class="hl kwd">remove_from_interlocking</span><span class="hl opt">(</span>ts<span class="hl opt">.</span>tc_breaks<span class="hl opt">[</span>sel_tcb<span class="hl opt">])</span>
sel_tcb <span class="hl opt">=</span> <span class="hl kwa">nil</span>
<span class="hl kwa">end</span>
<span class="hl kwa">if</span> fields<span class="hl opt">.</span>link <span class="hl kwa">then</span>
players_link_ts<span class="hl opt">[</span>pname<span class="hl opt">] =</span> ts_id
<span class="hl kwa">end</span>
<span class="hl kwa">if</span> fields<span class="hl opt">.</span>dissolve <span class="hl kwa">then</span>
ildb<span class="hl opt">.</span><span class="hl kwd">dissolve_ts</span><span class="hl opt">(</span>ts_id<span class="hl opt">)</span>
minetest<span class="hl opt">.</span><span class="hl kwd">close_formspec</span><span class="hl opt">(</span>pname<span class="hl opt">,</span> formname<span class="hl opt">)</span>
<span class="hl kwa">return</span>
<span class="hl kwa">end</span>
<span class="hl kwa">if</span> fields<span class="hl opt">.</span>setname <span class="hl kwa">then</span>
ts<span class="hl opt">.</span>name <span class="hl opt">=</span> fields<span class="hl opt">.</span>name
<span class="hl kwa">if</span> ts<span class="hl opt">.</span>name <span class="hl opt">==</span> <span class="hl str">""</span> <span class="hl kwa">then