Weather support

1 files changed, 205 insertions, 69 deletions

diff --git a/src/content_abm.cpp b/src/content_abm.cpp
index 6adcbf708..110ac1eea 100644
--- a/src/content_abm.cpp
+++ b/src/content_abm.cpp
@@ -28,6 +28,8 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 #include "treegen.h" // For treegen::make_tree
 #include "main.h" // for g_settings
 #include "map.h"
+#include "cpp_api/scriptapi.h"
+#include "log.h"
 
 #define PP(x) "("<<(x).X<<","<<(x).Y<<","<<(x).Z<<")"
 
@@ -166,86 +168,220 @@ public:
 	}
 };
 
-class LiquidFlowABM : public ActiveBlockModifier
-{
-private:
-	std::set<std::string> contents;
+class LiquidFlowABM : public ActiveBlockModifier {
+	private:
+		std::set<std::string> contents;
 
-public:
-	LiquidFlowABM(ServerEnvironment *env, INodeDefManager *nodemgr) 
-	{
-		std::set<content_t> liquids;
-		nodemgr->getIds("group:liquid", liquids);
-		for(std::set<content_t>::const_iterator k = liquids.begin(); k != liquids.end(); k++)
-			contents.insert(nodemgr->get(*k).liquid_alternative_flowing);
-		
-	}
-	virtual std::set<std::string> getTriggerContents()
-	{
-		return contents;
-	}
-	virtual float getTriggerInterval()
-	{ return 10.0; }
-	virtual u32 getTriggerChance()
-	{ return 10; }
-	virtual void trigger(ServerEnvironment *env, v3s16 p, MapNode n)
-	{
-		ServerMap *map = &env->getServerMap();
-		if (map->transforming_liquid_size() > 500)
-			return;
-		map->transforming_liquid_add(p);
-		//if ((*map).m_transforming_liquid.size() < 500) (*map).m_transforming_liquid.push_back(p);
-	}
+	public:
+		LiquidFlowABM(ServerEnvironment *env, INodeDefManager *nodemgr) {
+			std::set<content_t> liquids;
+			nodemgr->getIds("group:liquid", liquids);
+			for(std::set<content_t>::const_iterator k = liquids.begin(); k != liquids.end(); k++)
+				contents.insert(nodemgr->get(*k).liquid_alternative_flowing);
+		}
+		virtual std::set<std::string> getTriggerContents() {
+			return contents;
+		}
+		virtual float getTriggerInterval()
+		{ return 10.0; }
+		virtual u32 getTriggerChance()
+		{ return 10; }
+		virtual void trigger(ServerEnvironment *env, v3s16 p, MapNode n) {
+			ServerMap *map = &env->getServerMap();
+			if (map->transforming_liquid_size() > 500)
+				return;
+			map->transforming_liquid_add(p);
+		}
 };
 
-class LiquidDropABM : public ActiveBlockModifier
-{
-private:
-	std::set<std::string> contents;
+class LiquidDropABM : public ActiveBlockModifier {
+	private:
+		std::set<std::string> contents;
 
-public:
-	LiquidDropABM(ServerEnvironment *env, INodeDefManager *nodemgr) 
-	{
-		std::set<content_t> liquids;
-		nodemgr->getIds("group:liquid", liquids);
-		for(std::set<content_t>::const_iterator k = liquids.begin(); k != liquids.end(); k++)
-			contents.insert(nodemgr->get(*k).liquid_alternative_source);
-	}
-	virtual std::set<std::string> getTriggerContents()
-	{ return contents; }
-	virtual std::set<std::string> getRequiredNeighbors()
-	{
-		std::set<std::string> neighbors;
-		neighbors.insert("mapgen_air");
-		return neighbors; 
-	}
-	virtual float getTriggerInterval()
-	{ return 20.0; }
-	virtual u32 getTriggerChance()
-	{ return 10; }
-	virtual void trigger(ServerEnvironment *env, v3s16 p, MapNode n) 
-	{
-		ServerMap *map = &env->getServerMap();
-		if (map->transforming_liquid_size() > 500)
-			return;
-		if (	   map->getNodeNoEx(p - v3s16(0,  1, 0 )).getContent() != CONTENT_AIR  // below
-			&& map->getNodeNoEx(p - v3s16(1,  0, 0 )).getContent() != CONTENT_AIR  // right
-			&& map->getNodeNoEx(p - v3s16(-1, 0, 0 )).getContent() != CONTENT_AIR  // left
-			&& map->getNodeNoEx(p - v3s16(0,  0, 1 )).getContent() != CONTENT_AIR  // back 
-			&& map->getNodeNoEx(p - v3s16(0,  0, -1)).getContent() != CONTENT_AIR  // front
-		)
-			return;
-		map->transforming_liquid_add(p);
-	}
+	public:
+		LiquidDropABM(ServerEnvironment *env, INodeDefManager *nodemgr) {
+			std::set<content_t> liquids;
+			nodemgr->getIds("group:liquid", liquids);
+			for(std::set<content_t>::const_iterator k = liquids.begin(); k != liquids.end(); k++)
+				contents.insert(nodemgr->get(*k).liquid_alternative_source);
+		}
+		virtual std::set<std::string> getTriggerContents()
+		{ return contents; }
+		virtual std::set<std::string> getRequiredNeighbors() {
+			std::set<std::string> neighbors;
+			neighbors.insert("mapgen_air");
+			return neighbors;
+		}
+		virtual float getTriggerInterval()
+		{ return 20.0; }
+		virtual u32 getTriggerChance()
+		{ return 10; }
+		virtual void trigger(ServerEnvironment *env, v3s16 p, MapNode n) {
+			ServerMap *map = &env->getServerMap();
+			if (map->transforming_liquid_size() > 500)
+				return;
+			if (   map->getNodeNoEx(p - v3s16(0,  1, 0 )).getContent() != CONTENT_AIR  // below
+			    && map->getNodeNoEx(p - v3s16(1,  0, 0 )).getContent() != CONTENT_AIR  // right
+			    && map->getNodeNoEx(p - v3s16(-1, 0, 0 )).getContent() != CONTENT_AIR  // left
+			    && map->getNodeNoEx(p - v3s16(0,  0, 1 )).getContent() != CONTENT_AIR  // back
+			    && map->getNodeNoEx(p - v3s16(0,  0, -1)).getContent() != CONTENT_AIR  // front
+			   )
+				return;
+			map->transforming_liquid_add(p);
+		}
 };
 
-void add_legacy_abms(ServerEnvironment *env, INodeDefManager *nodedef)
-{
+class LiquidFreeze : public ActiveBlockModifier {
+	public:
+		LiquidFreeze(ServerEnvironment *env, INodeDefManager *nodemgr) { }
+		virtual std::set<std::string> getTriggerContents() {
+			std::set<std::string> s;
+			s.insert("group:freezes");
+			return s;
+		}
+		virtual std::set<std::string> getRequiredNeighbors() {
+			std::set<std::string> s;
+			s.insert("mapgen_air");
+			s.insert("group:melts");
+			return s;
+		}
+		virtual float getTriggerInterval()
+		{ return 10.0; }
+		virtual u32 getTriggerChance()
+		{ return 20; }
+		virtual void trigger(ServerEnvironment *env, v3s16 p, MapNode n) {
+			ServerMap *map = &env->getServerMap();
+			INodeDefManager *ndef = env->getGameDef()->ndef();
+
+			float heat = map->getHeat(env, p);
+			//heater = rare
+			if (heat <= -1 && (heat <= -50 || ((myrand_range(-50, heat)) <= -30))) {
+				content_t c_self = n.getContent();
+				// making freeze not annoying, do not freeze random blocks in center of ocean
+				// todo: any block not water (dont freeze _source near _flowing)
+				content_t c;
+				bool allow = heat < -40;
+				// todo: make for(...)
+				if (!allow) {
+				 c = map->getNodeNoEx(p - v3s16(0,  1, 0 )).getContent(); // below
+				 if (c == CONTENT_AIR || c == CONTENT_IGNORE)
+					return; // do not freeze when falling
+				 if (c != c_self && c != CONTENT_IGNORE) allow = 1;
+				 if (!allow) {
+				  c = map->getNodeNoEx(p - v3s16(1,  0, 0 )).getContent(); // right
+				  if (c != c_self && c != CONTENT_IGNORE) allow = 1;
+				  if (!allow) {
+				   c = map->getNodeNoEx(p - v3s16(-1, 0, 0 )).getContent(); // left
+				   if (c != c_self && c != CONTENT_IGNORE) allow = 1;
+				   if (!allow) {
+				    c = map->getNodeNoEx(p - v3s16(0,  0, 1 )).getContent(); // back
+				    if (c != c_self && c != CONTENT_IGNORE) allow = 1;
+				    if (!allow) {
+				     c = map->getNodeNoEx(p - v3s16(0,  0, -1)).getContent(); // front
+				     if (c != c_self && c != CONTENT_IGNORE) allow = 1;
+				    }
+				   }
+				  }
+				 }
+				}
+				if (allow) {
+					n.setContent(ndef->getId(ndef->get(n).freezemelt));
+					map->addNodeWithEvent(p, n);
+				}
+			}
+		}
+};
+
+class LiquidMeltWeather : public ActiveBlockModifier {
+	public:
+		LiquidMeltWeather(ServerEnvironment *env, INodeDefManager *nodemgr) { }
+		virtual std::set<std::string> getTriggerContents() {
+			std::set<std::string> s;
+			s.insert("group:melts");
+			return s;
+		}
+		virtual std::set<std::string> getRequiredNeighbors() {
+			std::set<std::string> s;
+			s.insert("mapgen_air");
+			s.insert("group:freezes");
+			return s;
+		}
+		virtual float getTriggerInterval()
+		{ return 10.0; }
+		virtual u32 getTriggerChance()
+		{ return 20; }
+		virtual void trigger(ServerEnvironment *env, v3s16 p, MapNode n) {
+			ServerMap *map = &env->getServerMap();
+			INodeDefManager *ndef = env->getGameDef()->ndef();
+
+			float heat = map->getHeat(env, p);
+			if (heat >= 1 && (heat >= 40 || ((myrand_range(heat, 40)) >= 20))) {
+				n.setContent(ndef->getId(ndef->get(n).freezemelt));
+				if (!n.getLevel(ndef))
+					n.addLevel(ndef);
+				map->addNodeWithEvent(p, n);
+				env->getScriptIface()->node_falling_update(p);
+			}
+		}
+};
+
+class LiquidMeltHot : public ActiveBlockModifier {
+	public:
+		LiquidMeltHot(ServerEnvironment *env, INodeDefManager *nodemgr) { }
+		virtual std::set<std::string> getTriggerContents() {
+			std::set<std::string> s;
+			s.insert("group:melts");
+			return s;
+		}
+		virtual std::set<std::string> getRequiredNeighbors() {
+			std::set<std::string> s;
+			s.insert("group:igniter");
+			s.insert("group:hot");
+			return s;
+		}
+		virtual float getTriggerInterval()
+		{ return 2.0; }
+		virtual u32 getTriggerChance()
+		{ return 4; }
+		virtual void trigger(ServerEnvironment *env, v3s16 p, MapNode n) {
+			ServerMap *map = &env->getServerMap();
+			INodeDefManager *ndef = env->getGameDef()->ndef();
+			n.setContent(ndef->getId(ndef->get(n).freezemelt));
+			if (!n.getLevel(ndef))
+				n.addLevel(ndef);
+			map->addNodeWithEvent(p, n);
+			env->getScriptIface()->node_falling_update(p);
+		}
+};
+
+class LiquidMeltAround : public LiquidMeltHot {
+	public:
+		LiquidMeltAround(ServerEnvironment *env, INodeDefManager *nodemgr) 
+			: LiquidMeltHot(env, nodemgr) { }
+		virtual std::set<std::string> getRequiredNeighbors() {
+			std::set<std::string> s;
+			s.insert("group:melt_around");
+			return s;
+		}
+		virtual float getTriggerInterval()
+		{ return 40.0; }
+		virtual u32 getTriggerChance()
+		{ return 60; }
+};
+
+
+void add_legacy_abms(ServerEnvironment *env, INodeDefManager *nodedef) {
 	env->addActiveBlockModifier(new GrowGrassABM());
 	env->addActiveBlockModifier(new RemoveGrassABM());
 	env->addActiveBlockModifier(new MakeTreesFromSaplingsABM(env, nodedef));
 	if (g_settings->getBool("liquid_finite")) {
 		env->addActiveBlockModifier(new LiquidFlowABM(env, nodedef));
 		env->addActiveBlockModifier(new LiquidDropABM(env, nodedef));
+		env->addActiveBlockModifier(new LiquidMeltHot(env, nodedef));
+		env->addActiveBlockModifier(new LiquidMeltAround(env, nodedef));
+		if (g_settings->getBool("weather")) {
+			env->addActiveBlockModifier(new LiquidFreeze(env, nodedef));
+			env->addActiveBlockModifier(new LiquidMeltWeather(env, nodedef));
+		}
 	}
 }