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115 lines
2.3 KiB
C
115 lines
2.3 KiB
C
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/*
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Minetest-c55
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Copyright (C) 2010 celeron55, Perttu Ahola <celeron55@gmail.com>
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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 General Public License as published by
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the Free Software Foundation; either version 2 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 General Public License for more details.
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You should have received a copy of the GNU 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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#ifndef MAPBLOCK_NODEMOD_HEADER
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#define MAPBLOCK_NODEMOD_HEADER
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enum NodeModType
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{
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NODEMOD_NONE,
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NODEMOD_CHANGECONTENT, //param is content id
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NODEMOD_CRACK // param is crack progression
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};
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struct NodeMod
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{
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NodeMod(enum NodeModType a_type=NODEMOD_NONE, u16 a_param=0)
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{
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type = a_type;
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param = a_param;
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}
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bool operator==(const NodeMod &other)
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{
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return (type == other.type && param == other.param);
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}
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enum NodeModType type;
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u16 param;
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};
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class NodeModMap
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{
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public:
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/*
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returns true if the mod was different last time
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*/
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bool set(v3s16 p, const NodeMod &mod)
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{
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// See if old is different, cancel if it is not different.
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core::map<v3s16, NodeMod>::Node *n = m_mods.find(p);
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if(n)
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{
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NodeMod old = n->getValue();
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if(old == mod)
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return false;
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n->setValue(mod);
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}
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else
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{
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m_mods.insert(p, mod);
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}
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return true;
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}
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// Returns true if there was one
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bool get(v3s16 p, NodeMod *mod)
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{
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core::map<v3s16, NodeMod>::Node *n;
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n = m_mods.find(p);
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if(n == NULL)
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return false;
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if(mod)
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*mod = n->getValue();
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return true;
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}
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bool clear(v3s16 p)
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{
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if(m_mods.find(p))
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{
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m_mods.remove(p);
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return true;
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}
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return false;
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}
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bool clear()
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{
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if(m_mods.size() == 0)
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return false;
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m_mods.clear();
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return true;
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}
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void copy(NodeModMap &dest)
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{
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dest.m_mods.clear();
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for(core::map<v3s16, NodeMod>::Iterator
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i = m_mods.getIterator();
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i.atEnd() == false; i++)
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{
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dest.m_mods.insert(i.getNode()->getKey(), i.getNode()->getValue());
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}
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}
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private:
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core::map<v3s16, NodeMod> m_mods;
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};
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#endif
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