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Added EventHandler.CreateOnce and EventHandler.Find to refer to handlers after they are created

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ZZYZX 2017-01-22 02:56:15 +02:00
parent ce616f9c06
commit ca0d92a454
1 changed files with 31 additions and 9 deletions
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40
src/events.cpp
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@ -2,7 +2,7 @@
#include "virtual.h"
#include "r_utility.h"
DEventHandler* E_FirstDEventHandler = nullptr;
DEventHandler* E_FirstEventHandler = nullptr;
void E_RegisterHandler(DEventHandler* handler)
{
@ -10,10 +10,10 @@ void E_RegisterHandler(DEventHandler* handler)
return;
// link into normal list
handler->prev = nullptr;
handler->next = E_FirstDEventHandler;
handler->next = E_FirstEventHandler;
if (handler->next)
handler->next->prev = handler;
E_FirstDEventHandler = handler;
E_FirstEventHandler = handler;
}
void E_UnregisterHandler(DEventHandler* handler)
@ -25,31 +25,31 @@ void E_UnregisterHandler(DEventHandler* handler)
handler->prev->next = handler->next;
if (handler->next)
handler->next->prev = handler->prev;
if (handler == E_FirstDEventHandler)
E_FirstDEventHandler = handler->next;
if (handler == E_FirstEventHandler)
E_FirstEventHandler = handler->next;
}
void E_MapLoaded()
{
for (DEventHandler* handler = E_FirstDEventHandler; handler; handler = handler->next)
for (DEventHandler* handler = E_FirstEventHandler; handler; handler = handler->next)
handler->MapLoaded();
}
void E_MapUnloading()
{
for (DEventHandler* handler = E_FirstDEventHandler; handler; handler = handler->next)
for (DEventHandler* handler = E_FirstEventHandler; handler; handler = handler->next)
handler->MapUnloading();
}
void E_RenderFrame()
{
for (DEventHandler* handler = E_FirstDEventHandler; handler; handler = handler->next)
for (DEventHandler* handler = E_FirstEventHandler; handler; handler = handler->next)
handler->RenderFrame();
}
void E_RenderCamera()
{
for (DEventHandler* handler = E_FirstDEventHandler; handler; handler = handler->next)
for (DEventHandler* handler = E_FirstEventHandler; handler; handler = handler->next)
handler->RenderCamera();
}
@ -71,6 +71,28 @@ DEFINE_ACTION_FUNCTION(DEventHandler, Create)
ACTION_RETURN_OBJECT(t->CreateNew());
}
DEFINE_ACTION_FUNCTION(DEventHandler, CreateOnce)
{
PARAM_PROLOGUE;
PARAM_CLASS(t, DEventHandler);
// check if there are already registered handlers of this type.
for (DEventHandler* handler = E_FirstEventHandler; handler; handler = handler->next)
if (handler->GetClass() == t) // check precise class
ACTION_RETURN_OBJECT(nullptr);
// generate a new object of this type.
ACTION_RETURN_OBJECT(t->CreateNew());
}
DEFINE_ACTION_FUNCTION(DEventHandler, Find)
{
PARAM_PROLOGUE;
PARAM_CLASS(t, DEventHandler);
for (DEventHandler* handler = E_FirstEventHandler; handler; handler = handler->next)
if (handler->GetClass() == t) // check precise class
ACTION_RETURN_OBJECT(handler);
ACTION_RETURN_OBJECT(nullptr);
}
DEFINE_ACTION_FUNCTION(DEventHandler, Register)
{
PARAM_PROLOGUE;