Small refactor, add Scrtipable base, add node_v() Lua function

Aquaria/Path.cpp

@@ -40,7 +40,6 @@ Path::Path()
 	pathType = PATH_NONE;
 	neverSpawned = true;
 	spawnedEntity = 0;
-	script = 0;
 	updateFunction = activateFunction = false;
 	cursorActivation = false;
 	rect.setWidth(64);
@@ -215,11 +214,7 @@ void Path::destroy()
 		emitter->safeKill();
 		emitter = 0;
 	}
-	if (script)
-	{
-		dsq->scriptInterface.closeScript(script);
-		script = 0;
-	}
+	closeScript();
 }
 
 Path::~Path()
@@ -724,11 +719,6 @@ void Path::luaDebugMsg(const std::string &func, const std::string &msg)
 	debugLog("luaScriptError: Path [" + name + "]: " + func + " : " + msg);
 }
 
-int Path::pushLuaVars(lua_State *L)
-{
-	return script ?  script->pushLocalVars(L) : 0;
-}
-
 MinimapIcon *Path::ensureMinimapIcon()
 {
 	if(!minimapIcon)

Aquaria/Path.h

@@ -24,12 +24,13 @@ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 #include "../BBGE/Base.h"
 #include "../BBGE/Particles.h"
 #include "../BBGE/ScriptObject.h"
-#include "ScriptInterface.h"
 #include "Rect.h"
+#include "Scriptable.h"
 
 #undef PATH_MAX  // May be set by a system header.
 
 struct MinimapIcon;
+class Entity;
 
 class PathNode
 {
@@ -72,7 +73,7 @@ enum PathShape
 	PATHSHAPE_CIRCLE	= 1
 };
 
-class Path : public ScriptObject
+class Path : public ScriptObject, public Scriptable
 {
 public:
 	Path();
@@ -112,7 +113,6 @@ public:
 	void refreshScript();
 	MinimapIcon *ensureMinimapIcon();
 
-	Script *script;
 	bool updateFunction;
 	bool activateFunction;
 	bool cursorActivation;
@@ -157,7 +157,6 @@ public:
 
 	int messageVariadic(lua_State *L, int nparams);
 	void luaDebugMsg(const std::string &func, const std::string &msg);
-	int pushLuaVars(lua_State *L);
 };
 
 #endif

Aquaria/ScriptInterface.cpp

@@ -3057,6 +3057,12 @@ luaFunc(node_v)
 	return n ? n->pushLuaVars(L) : 0;
 }
 
+luaFunc(shot_v)
+{
+	Shot *s = getShot(L);
+	return s ? s->pushLuaVars(L) : 0;
+}
+
 luaFunc(isQuitFlag)
 {
 	luaReturnBool(dsq->isQuitFlag());
@@ -9938,6 +9944,7 @@ static const struct {
 
 	luaRegister(entity_v),
 	luaRegister(node_v),
+	luaRegister(shot_v),
 
 	luaRegister(isQuitFlag),
 	luaRegister(isDeveloperKeys),

Aquaria/Scriptable.cpp

@@ -0,0 +1,21 @@
+#include "Scriptable.h"
+#include "ScriptInterface.h"
+#include "DSQ.h"
+
+Scriptable::Scriptable() : script(0)
+{
+}
+
+int Scriptable::pushLuaVars(lua_State *L)
+{
+	return script ?  script->pushLocalVars(L) : 0;
+}
+
+void Scriptable::closeScript()
+{
+	if (script)
+	{
+		dsq->scriptInterface.closeScript(script);
+		script = 0;
+	}
+}

Aquaria/Scriptable.h

@@ -0,0 +1,26 @@
+#ifndef AQUARIA_SCRIPTABLE_H
+#define AQUARIA_SCRIPTABLE_H
+
+class Script;
+struct lua_State;
+
+// Object that has a script attached
+class Scriptable
+{
+public:
+	Scriptable();
+
+	Script *script; // NULL if no script is attached
+
+	int pushLuaVars(lua_State *L);
+	void closeScript();
+
+	// Note! Before you attempt to move here some common functions like message() or anything that takes a 'this'-pointer:
+	// ScriptInterface uses raw pointers everywhere. 'this' is always passed as a void*, so if we make any such method that pushes 'this'
+	// a method of the Scriptable class, then that would pass an offset pointer.
+	// Eg. Entity *e casted to ((void*)e) is not the same as ((void*)(Scriptable*)e)! And since ScriptInterface does (Entity*)lua_touserdata(L, slot),
+	// this would break horribly since the necessary type infos to fix the pointer are not preserved.
+	// A fix would be to dynamic_cast from a common base class, but right now that isn't worth the hassle.
+};
+
+#endif

Aquaria/ScriptedEntity.cpp

@@ -31,7 +31,6 @@ ScriptedEntity::ScriptedEntity(const std::string &scriptName, Vector position, E
 {
 	addType(SCO_SCRIPTED_ENTITY);
 	crushDelay = 0;
-	script = 0;
 	songNoteFunction = songNoteDoneFunction = true;
 	addChild(&pullEmitter, PM_STATIC);
 
@@ -93,11 +92,6 @@ int ScriptedEntity::messageVariadic(lua_State *L, int nparams)
 	return Entity::messageVariadic(L, nparams);
 }
 
-int ScriptedEntity::pushLuaVars(lua_State *L)
-{
-	return script ? script->pushLocalVars(L) : 0;
-}
-
 void ScriptedEntity::warpSegments()
 {
 	Segmented::warpSegments(position);
@@ -394,11 +388,7 @@ void ScriptedEntity::destroy()
 {
 	CollideEntity::destroy();
 
-	if (script)
-	{
-		dsq->scriptInterface.closeScript(script);
-		script = 0;
-	}
+	closeScript();
 }
 
 void ScriptedEntity::song(SongType songType)

Aquaria/ScriptedEntity.h

@@ -24,11 +24,12 @@ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 #include "CollideEntity.h"
 #include "Segmented.h"
 #include "Particles.h"
+#include "Scriptable.h"
 
 struct lua_State;
 class Script;
 
-class ScriptedEntity : public CollideEntity, public Segmented
+class ScriptedEntity : public CollideEntity, public Segmented, public Scriptable
 {
 public:
 	ScriptedEntity(const std::string &scriptName, Vector position, EntityType et = ET_ENEMY);
@@ -50,7 +51,6 @@ public:
 	void entityDied(Entity *e);
 	void message(const std::string &msg, int v);
 	int messageVariadic(lua_State *L, int nparams);
-	int pushLuaVars(lua_State *L);
 
 	static bool runningActivation;
 
@@ -105,7 +105,6 @@ protected:
 
 	void onHitWall();
 	bool reverseSegments;
-	Script *script;
 	void onUpdate(float dt);
 	void onEnterState(int action);
 	void onExitState(int action);

Aquaria/Shot.cpp

@@ -298,7 +298,6 @@ Shot::Shot() : Quad(), Segmented(0,0)
 	enqueuedForDelete = false;
 	shotIdx = shots.size();
 	shots.push_back(this);
-	script = 0;
 	updateScript = false;
 }
 
@@ -431,8 +430,7 @@ void Shot::onEndOfLife()
 	if(script)
 	{
 		script->call("dieNormal", this);
-		dsq->scriptInterface.closeScript(script);
-		script = 0;
+		closeScript();
 	}
 	destroySegments(0.2f);
 	dead = true;

Aquaria/Shot.h

@@ -23,6 +23,7 @@ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 
 #include "CollideEntity.h"
 #include "Segmented.h"
+#include "Scriptable.h"
 
 class ParticleEffect;
 class Script;
@@ -73,7 +74,7 @@ struct ShotData
 
 };
 
-class Shot : public Quad, public Segmented
+class Shot : public Quad, public Segmented, public Scriptable
 {
 public:
 
@@ -144,7 +145,6 @@ protected:
 	bool fired;
 	bool enqueuedForDelete;
 	void onUpdate(float dt);
-	Script *script;
 	bool updateScript;
 
 private:

CMakeLists.txt

@@ -453,6 +453,7 @@ SET(AQUARIA_SRCS
     ${SRCDIR}/RecipeMenuEntry.cpp
     ${SRCDIR}/SceneEditor.cpp
     ${SRCDIR}/SchoolFish.cpp
+    ${SRCDIR}/Scriptable.cpp
     ${SRCDIR}/ScriptedEntity.cpp
     ${SRCDIR}/ScriptInterface.cpp
     ${SRCDIR}/Segmented.cpp

win/vc90/Aquaria.vcproj

@@ -631,6 +631,14 @@
 				RelativePath="..\..\Aquaria\SchoolFish.h"
 				>
 			</File>
+			<File
+				RelativePath="..\..\Aquaria\Scriptable.cpp"
+				>
+			</File>
+			<File
+				RelativePath="..\..\Aquaria\Scriptable.h"
+				>
+			</File>
 			<File
 				RelativePath="..\..\Aquaria\ScriptedEntity.cpp"
 				>