From 37e364b2c6cc7487a1c888d256a73e5337bb7189 Mon Sep 17 00:00:00 2001
From: Ash Wolf <ninji@wuffs.org>
Date: Wed, 14 Jun 2023 00:50:34 +0100
Subject: initial commit

---
 src/T2DLL/T2ReturnStack.cpp | 140 ++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 140 insertions(+)
 create mode 100644 src/T2DLL/T2ReturnStack.cpp

(limited to 'src/T2DLL/T2ReturnStack.cpp')

diff --git a/src/T2DLL/T2ReturnStack.cpp b/src/T2DLL/T2ReturnStack.cpp
new file mode 100644
index 0000000..4c046bb
--- /dev/null
+++ b/src/T2DLL/T2ReturnStack.cpp
@@ -0,0 +1,140 @@
+#include "T2Archive.h"
+#include "T2ReturnStack.h"
+
+T2ReturnStack::T2ReturnStack() {
+	Init();
+}
+
+T2ReturnStack::~T2ReturnStack() {
+}
+
+void T2ReturnStack::Init() {
+	for (int i = 0; i < 3; i++) {
+		mEntries[i].tenant = 0;
+		mEntries[i].time = 0;
+	}
+	mCount = 0;
+}
+
+BOOL T2ReturnStack::Current(unsigned int &tenant, unsigned int &time) {
+	if (mCount > 0) {
+		tenant = mEntries[0].tenant;
+		time = mEntries[0].time;
+		return true;
+	}
+	return false;
+}
+
+BOOL T2ReturnStack::Push(unsigned int tenant, unsigned int time) {
+	if (mCount < 3) {
+		for (int i = mCount - 1; i >= 0; i--) {
+			mEntries[i + 1] = mEntries[i];
+		}
+		mCount++;
+		mEntries[0].tenant = tenant;
+		mEntries[0].time = time;
+		return true;
+	} else {
+		return false;
+	}
+}
+
+BOOL T2ReturnStack::Pop(unsigned int &tenant, unsigned int &time) {
+	if (mCount > 0) {
+		tenant = mEntries[0].tenant;
+		time = mEntries[0].time;
+		for (int i = 1; i < mCount; i++) {
+			mEntries[i - 1] = mEntries[i];
+		}
+		mCount--;
+		return true;
+	} else {
+		return false;
+	}
+}
+
+BOOL T2ReturnStack::IsSetTime() const {
+	BOOL result = false;
+	if (mCount > 0 && mEntries[0].time != 0)
+		result = true;
+	return result;
+}
+
+unsigned int T2ReturnStack::GetTenant() const {
+	unsigned int result = 0;
+	if (mCount > 0)
+		result = mEntries[0].tenant;
+	return result;
+}
+
+unsigned int T2ReturnStack::GetTime() const {
+	unsigned int result = 0;
+	if (mCount > 0)
+		result = mEntries[0].time;
+	return result;
+}
+
+void T2ReturnStack::SetTime(unsigned int time) {
+	if (mCount > 0)
+		mEntries[0].time = time;
+}
+
+void T2ReturnStack::DayChanged() {
+	for (int i = 0; i < mCount; i++) {
+		if (mEntries[i].time >= 1440) {
+			mEntries[i].time -= 1440;
+		} else if (mEntries[i].time > 1438) {
+			mEntries[i].time = 0;
+		}
+	}
+}
+
+BOOL T2ReturnStack::Remove(unsigned int tenant) {
+	BOOL result = false;
+
+	for (int i = 0; i < mCount; i++) {
+		if (!result) {
+			if (mEntries[i].tenant == tenant)
+				result = true;
+		} else {
+			mEntries[i - 1] = mEntries[i];
+		}
+	}
+
+	if (result)
+		mCount--;
+
+	return result;
+}
+
+void T2ReturnStack::Peek(int index, unsigned int &tenant, unsigned int &time) {
+	tenant = mEntries[index].tenant;
+	time = mEntries[index].time;
+}
+
+void T2ReturnStack::Poke(int index, unsigned int tenant, unsigned int time) {
+	mEntries[index].tenant = tenant;
+	mEntries[index].time = time;
+}
+
+void T2ReturnStack::Read(T2Archive &stream, T2TowerDoc *towerDoc) {
+	stream >> mCount;
+	for (int i = 0; i < mCount; i++) {
+		unsigned short v;
+		stream >> v;
+		mEntries[i].tenant = v;
+		stream >> v;
+		mEntries[i].time = v;
+	}
+}
+
+void T2ReturnStack::Write(T2Archive &stream) {
+	stream << mCount;
+	for (int i = 0; i < mCount; i++) {
+		unsigned short v;
+		v = mEntries[i].tenant;
+		stream << v;
+		v = mEntries[i].time;
+		stream << v;
+	}
+}
-- 
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