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-rw-r--r--src/mapblock_nodemod.h114
1 files changed, 114 insertions, 0 deletions
diff --git a/src/mapblock_nodemod.h b/src/mapblock_nodemod.h
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+++ b/src/mapblock_nodemod.h
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+/*
+Minetest-c55
+Copyright (C) 2010 celeron55, Perttu Ahola <celeron55@gmail.com>
+
+This program is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along
+with this program; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+*/
+
+#ifndef MAPBLOCK_NODEMOD_HEADER
+#define MAPBLOCK_NODEMOD_HEADER
+
+enum NodeModType
+{
+ NODEMOD_NONE,
+ NODEMOD_CHANGECONTENT, //param is content id
+ NODEMOD_CRACK // param is crack progression
+};
+
+struct NodeMod
+{
+ NodeMod(enum NodeModType a_type=NODEMOD_NONE, u16 a_param=0)
+ {
+ type = a_type;
+ param = a_param;
+ }
+ bool operator==(const NodeMod &other)
+ {
+ return (type == other.type && param == other.param);
+ }
+ enum NodeModType type;
+ u16 param;
+};
+
+class NodeModMap
+{
+public:
+ /*
+ returns true if the mod was different last time
+ */
+ bool set(v3s16 p, const NodeMod &mod)
+ {
+ // See if old is different, cancel if it is not different.
+ core::map<v3s16, NodeMod>::Node *n = m_mods.find(p);
+ if(n)
+ {
+ NodeMod old = n->getValue();
+ if(old == mod)
+ return false;
+
+ n->setValue(mod);
+ }
+ else
+ {
+ m_mods.insert(p, mod);
+ }
+
+ return true;
+ }
+ // Returns true if there was one
+ bool get(v3s16 p, NodeMod *mod)
+ {
+ core::map<v3s16, NodeMod>::Node *n;
+ n = m_mods.find(p);
+ if(n == NULL)
+ return false;
+ if(mod)
+ *mod = n->getValue();
+ return true;
+ }
+ bool clear(v3s16 p)
+ {
+ if(m_mods.find(p))
+ {
+ m_mods.remove(p);
+ return true;
+ }
+ return false;
+ }
+ bool clear()
+ {
+ if(m_mods.size() == 0)
+ return false;
+ m_mods.clear();
+ return true;
+ }
+ void copy(NodeModMap &dest)
+ {
+ dest.m_mods.clear();
+
+ for(core::map<v3s16, NodeMod>::Iterator
+ i = m_mods.getIterator();
+ i.atEnd() == false; i++)
+ {
+ dest.m_mods.insert(i.getNode()->getKey(), i.getNode()->getValue());
+ }
+ }
+
+private:
+ core::map<v3s16, NodeMod> m_mods;
+};
+
+#endif
+