From 7003039e56598fee96a49218d1d4fa167ac97a0b Mon Sep 17 00:00:00 2001
From: Jonas Kulla <Nyocurio@gmail.com>
Date: Sat, 3 Jan 2015 19:18:52 +0100
Subject: [PATCH] EventThread: Track touch state (maximum 4 fingers)

---
 src/eventthread.cpp | 51 ++++++++++++++++++++++++++++++++++-----------
 src/eventthread.h   | 20 ++++++++++++++----
 2 files changed, 55 insertions(+), 16 deletions(-)

diff --git a/src/eventthread.cpp b/src/eventthread.cpp
index 0ae1acf..724f4ba 100644
--- a/src/eventthread.cpp
+++ b/src/eventthread.cpp
@@ -26,6 +26,7 @@
 #include <SDL_messagebox.h>
 #include <SDL_timer.h>
 #include <SDL_thread.h>
+#include <SDL_touch.h>
 
 #include "sharedstate.h"
 #include "graphics.h"
@@ -34,17 +35,10 @@
 
 #include <string.h>
 
-uint8_t EventThread::keyStates[] = { false };
-
-EventThread::JoyState EventThread::joyState =
-{
-	{ 0 }, { 0 }, { false }
-};
-
-EventThread::MouseState EventThread::mouseState =
-{
-	0, 0, false, { false }
-};
+uint8_t EventThread::keyStates[];
+EventThread::JoyState EventThread::joyState;
+EventThread::MouseState EventThread::mouseState;
+EventThread::TouchState EventThread::touchState;
 
 /* User event codes */
 enum
@@ -111,6 +105,11 @@ void EventThread::process(RGSSThreadData &rtData)
 
 	bool resetting = false;
 
+	int winW, winH;
+	int i;
+
+	SDL_GetWindowSize(win, &winW, &winH);
+
 	SettingsMenu *sMenu = 0;
 
 	while (true)
@@ -140,7 +139,11 @@ void EventThread::process(RGSSThreadData &rtData)
 			switch (event.window.event)
 			{
 			case SDL_WINDOWEVENT_SIZE_CHANGED :
-				windowSizeMsg.post(Vec2i(event.window.data1, event.window.data2));
+				winW = event.window.data1;
+				winH = event.window.data2;
+
+				windowSizeMsg.post(Vec2i(winW, winH));
+				resetInputStates();
 				break;
 
 			case SDL_WINDOWEVENT_ENTER :
@@ -318,7 +321,30 @@ void EventThread::process(RGSSThreadData &rtData)
 
 			mouseState.x = event.motion.x;
 			mouseState.y = event.motion.y;
+			break;
 
+		case SDL_FINGERDOWN :
+			if (event.tfinger.fingerId >= MAX_FINGERS)
+				break;
+
+			i = event.tfinger.fingerId;
+			touchState.fingers[i].down = true;
+
+		case SDL_FINGERMOTION :
+			if (event.tfinger.fingerId >= MAX_FINGERS)
+				break;
+
+			i = event.tfinger.fingerId;
+			touchState.fingers[i].x = event.tfinger.x * winW;
+			touchState.fingers[i].y = event.tfinger.y * winH;
+			break;
+
+		case SDL_FINGERUP :
+			if (event.tfinger.fingerId >= MAX_FINGERS)
+				break;
+
+			i = event.tfinger.fingerId;
+			memset(&touchState.fingers[i], 0, sizeof(touchState.fingers[0]));
 			break;
 
 		default :
@@ -395,6 +421,7 @@ void EventThread::resetInputStates()
 	memset(&keyStates, 0, sizeof(keyStates));
 	memset(&joyState, 0, sizeof(joyState));
 	memset(&mouseState.buttons, 0, sizeof(mouseState.buttons));
+	memset(&touchState, 0, sizeof(touchState));
 }
 
 void EventThread::setFullscreen(SDL_Window *win, bool mode)
diff --git a/src/eventthread.h b/src/eventthread.h
index 1414f37..9dcc21f 100644
--- a/src/eventthread.h
+++ b/src/eventthread.h
@@ -40,11 +40,11 @@ struct RGSSThreadData;
 typedef struct ALCdevice_struct ALCdevice;
 struct SDL_Window;
 
+#define MAX_FINGERS 4
+
 class EventThread
 {
 public:
-	static uint8_t keyStates[SDL_NUM_SCANCODES];
-
 	struct JoyState
 	{
 		int axes[256];
@@ -52,8 +52,6 @@ public:
 		bool buttons[256];
 	};
 
-	static JoyState joyState;
-
 	struct MouseState
 	{
 		int x, y;
@@ -61,7 +59,21 @@ public:
 		bool buttons[32];
 	};
 
+	struct FingerState
+	{
+		bool down;
+		int x, y;
+	};
+
+	struct TouchState
+	{
+		FingerState fingers[MAX_FINGERS];
+	};
+
+	static uint8_t keyStates[SDL_NUM_SCANCODES];
+	static JoyState joyState;
 	static MouseState mouseState;
+	static TouchState touchState;
 
 	static bool allocUserEvents();