From c0a215282d12872cf32fb24f9067216c0f869b96 Mon Sep 17 00:00:00 2001
From: Tarek Soliman
Date: Thu, 1 Mar 2012 06:29:44 -0600
Subject: KEYMAPPER: Add delays for *UP events coming from non-keys

Delayed entries are in a queue where each entry stores how
many milliseconds should pass based on the last entry.
---
 common/EventDispatcher.cpp |  6 ++++++
 common/EventMapper.cpp     | 28 ++++++++++++++++++++++++++++
 common/events.h            | 15 +++++++++++++++
 3 files changed, 49 insertions(+)

(limited to 'common')

diff --git a/common/EventDispatcher.cpp b/common/EventDispatcher.cpp
index 4c7286bbb5..012a2dfce5 100644
--- a/common/EventDispatcher.cpp
+++ b/common/EventDispatcher.cpp
@@ -60,6 +60,12 @@ void EventDispatcher::dispatch() {
 			}
 		}
 	}
+
+	List<Event> delayedEvents = _mapper->getDelayedEvents();
+	for (List<Event>::iterator k = delayedEvents.begin(); k != delayedEvents.end(); ++k) {
+		const Event delayedEvent = *k;
+		dispatchEvent(delayedEvent);
+	}
 }
 
 void EventDispatcher::registerMapper(EventMapper *mapper) {
diff --git a/common/EventMapper.cpp b/common/EventMapper.cpp
index 0771ecdd89..47db61e472 100644
--- a/common/EventMapper.cpp
+++ b/common/EventMapper.cpp
@@ -21,6 +21,8 @@
  */
 
 #include "common/events.h"
+
+#include "common/system.h"
 #include "common/textconsole.h"
 
 namespace Common {
@@ -61,4 +63,30 @@ List<Event> DefaultEventMapper::mapEvent(const Event &ev, EventSource *source) {
 }
 
 
+void DefaultEventMapper::addDelayedEvent(uint32 millis, Event ev) {
+	if (_delayedEvents.empty()) {
+		_delayedEffectiveTime = g_system->getMillis() + millis;
+		millis = 0;
+	}
+	DelayedEventsEntry entry = DelayedEventsEntry(millis, ev);
+	_delayedEvents.push(entry);
+}
+
+List<Event> DefaultEventMapper::getDelayedEvents() {
+	List<Event> events;
+
+	if (_delayedEvents.empty())
+		return events;
+
+	uint32 now = g_system->getMillis();
+
+	while (!_delayedEvents.empty() && now >= _delayedEffectiveTime) {
+		DelayedEventsEntry entry = _delayedEvents.pop();
+		if (!_delayedEvents.empty())
+			_delayedEffectiveTime += _delayedEvents.front().timerOffset;
+		events.push_back(entry.event);
+	}
+	return events;
+}
+
 } // namespace Common
diff --git a/common/events.h b/common/events.h
index 7e411ecce5..7366c51d36 100644
--- a/common/events.h
+++ b/common/events.h
@@ -232,12 +232,27 @@ public:
 	 * Map an incoming event to one or more action events
 	 */
 	virtual List<Event> mapEvent(const Event &ev, EventSource *source) = 0;
+
+	virtual List<Event> getDelayedEvents() = 0;
 };
 
 class DefaultEventMapper : public EventMapper {
 public:
+	DefaultEventMapper() : _delayedEvents(), _delayedEffectiveTime(0) {}
 	// EventMapper interface
 	virtual List<Event> mapEvent(const Event &ev, EventSource *source);
+	virtual List<Event> getDelayedEvents();
+protected:
+	virtual void addDelayedEvent(uint32 millis, Event ev);
+
+	struct DelayedEventsEntry {
+		const uint32 timerOffset;
+		const Event event;
+		DelayedEventsEntry(const uint32 offset, const Event ev) : timerOffset(offset), event(ev) { }
+	};
+
+	Queue<DelayedEventsEntry> _delayedEvents;
+	uint32 _delayedEffectiveTime;
 };
 
 /**
-- 
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