A from-scratch SwiftUI remake of the 1982 Apple ][ trading game by Art Canfil:

Taipan! is a 1979 turn-based strategy computer game written for the TRS-80 and ported to the Apple II in 1982. It was created by Art Canfil and the company Mega Micro Computers, and published by Avalanche Productions.

The game Taipan! was inspired by the novel Tai-Pan by James Clavell. The player is in the role of a trader in the Far East. The goal of the game is for the player to accumulate wealth through trade and possibly also through booty won in battles against pirates.

This is an exercise for me to learn Swift and SwiftUI, open-sourced so that it might help somebody else along the way. I deliberately did not use UIKit for any of the visuals, even when it was probably easier.

I also wanted to explore how easy or difficult it would be to port SwiftUI across iPhone, iPad, and Macs.

I'm a beginner at Swift and SwiftUI, so all feedback are welcome. There's a lot of forced unwrapping in the code, because I bounced back and forth between crashing versus trying to proceed with a nonsensical game state that a prior state should've initialized properly.

The strings in the game, and possibly the general game mechanics, are almost certainly still remain under copyright protection. Since the original software had long since left the market, I don't believe this harms the commercial interests of the copyright holder.

The formulas are mostly based on the Cymon's Games version by Jay Link of https://taipangame.com.

The font is Morris Roman used under the 1001Fonts Free For Commercial Use License (FFC), specifically:

6. Embedding the given typeface may be embedded into an application such as a web- or mobile app, independant of the number of the application users, as long as the application does not distribute the given typeface, such as offering it as a download.

I retain the copyright to the source code of this project. You may not publish this or a derivative work in the App Store or elsewhere without my permission, but feel free to take snippets or ideas.

The iPhone, iPad, and macOS versions are all largely functional and playable.

The iPhone version took about two weeks to build, and is now playable. The landscape iPad version took about a day of tweaking, but the portrait iPad and larger iPhone layouts proved difficult. SwiftUI doesn't make it easy to make small spacing adjustments, especially when we're wrapping everything in a ScrollView for accesibility text sizes. The macOS version took another couple of days to bring up, with just ten #if os() chunks.

• The keyboard-oriented Apple ][ UI has been adapted for touch input, with a lot less of the nonsensical interactions that can happen in the original, such as opting to fight with no guns
• Light and dark mode support
• Some accessibility support
• Dialogs offer convenient numbers, such as buying enough to fill the ship's hold

The touch UI disables options when they're not applicable, which makes "the bug" pretty glaring, and I decided not to mimic it.

本遊戲以經完全中文化。我翻譯時故意使用一些如「錢莊」等比較古拙的字眼來搭配遊戲中公元 1860 年左右的用詞，但有哪位先進願意指教的話，我是感激不盡。

您如果在 macOS 上使用，請先用系統的 Font Book 程式確認有下載並安裝 STFangSong 仿宋字體。在 iOS 上我搞不懂該如何下載系統字體，所以內嵌了 cwTeX 的仿宋字型。這個字型有侵權的疑慮，要另用的話，請從原出處取得。據我所知，我沒有發表本遊戲的執行檔，應不受 GPL 約束而必須把遊戲本身也改以 GPL 授權。

• App Icon
• Localization, including proper plurality handling and fancyFormatted
• Keyboard support, including for the custom keypad and Apple ][ compatibility
• Untested haptics for when ship is hit
• Feedback and alert sounds
• Rotating a device between portrait and landscape orientations during a game
• Buttons should look different while being pressed
• Should be able to press any key to skip game delays

• Unit tests, maybe even a robot that plays the game
• Other color schemes, including a nostalgic green on black
• Particle effects (confetti for retirement, fire for ship battles)
• Saved game state
• High scores
• Improve layout on larger iPhones and portrait-orientation iPad. There's too much space given to the bottom pane, but SwiftUI makes this harder to fix than it sounds, at least for me.

Adventure awaits, reformatted for portrait-orientation screens, in dark and light mode!

Impossible options are disabled, convenient options are offered

Explore the seas and lands beyond, and battle pirates to protect your merchandise (and booty!)

iPad

The state machine of the game is depicted below. Note that some of the states are "pass through" and do nothing and simply move on to a subsequent state if certain conditions (e.g., random numbers) are not met. There are nicer ways to depict that, but I think keeping this diagram close to what the code actually does is more useful.

stateDiagram-v2
    [*] --> splash
    splash --> name
    arriving --> liYuenExtortion
    name --> debtOrGuns
    debtOrGuns --> liYuenExtortion
    liYuenExtortion --> notEnoughCash: yes
    liYuenExtortion --> mcHenryOffer: no
    notEnoughCash --> mcHenryOffer
    notEnoughCash --> borrowForLiYuen
    borrowForLiYuen --> borrowedForLiYuen: yes
    borrowForLiYuen --> elderBrotherWuPirateWarning: no
    elderBrotherWuPirateWarning --> mcHenryOffer
    borrowedForLiYuen --> mcHenryOffer
    mcHenryOffer --> elderBrotherWuWarning1: debt > 10000
    mcHenryOffer --> elderBrotherWuBusiness
    elderBrotherWuWarning1 --> elderBrotherWuWarning2
    elderBrotherWuWarning2 --> elderBrotherWuWarning3
    elderBrotherWuWarning3 --> elderBrotherWuBusiness
    elderBrotherWuBusiness --> cutthroats: no
    elderBrotherWuBusiness --> elderBrotherWuBailout
    elderBrotherWuBailout --> bailoutReaction: yes
    elderBrotherWuBailout --> bankruptcy: no
    bailoutReaction --> cutthroats
    bankruptcy --> finalStats
    cutthroats --> opiumSeized
    cutthroats --> newShipOffer
    cutthroats --> newGunOffer
    newShipOffer --> opiumSeized
    newShipOffer --> newGunOffer
    newGunOffer --> opiumSeized
    opiumSeized --> warehouseTheft
    warehouseTheft --> liYuenMessage
    liYuenMessage --> goodPrices
    goodPrices --> priceJump
    goodPrices --> priceDrop
    goodPrices --> robbery
    priceJump --> robbery
    priceDrop --> robbery
    robbery --> trading
    trading --> hostilesApproaching: Quit Trading
    trading --> retirement: Retire
    hostilesApproaching --> storm
    hostilesApproaching --> liYuenApproaching
    hostilesApproaching --> seaBattle
    seaBattle --> liYuenDroveThemOff
    seaBattle --> battleSummary
    battleSummary --> storm: shipStatus > 0
    battleSummary --> finalStats: shipStatus <= 0
    liYuenDroveThemOff --> liYuenApproaching
    liYuenApproaching --> liYuenLetUsBe
    liYuenLetUsBe --> storm
    liYuenLetUsBe --> liYuenAttacking
    liYuenAttacking --> liYuenBattle
    liYuenBattle --> liYuenBattleSummary
    liYuenBattleSummary --> storm
    storm --> storm2
    storm2 --> stormMadeIt
    storm2 --> stormGoingDown
    stormGoingDown --> finalStats
    stormMadeIt --> stormBlownOffCourse
    stormBlownOffCourse --> arriving
    retirement --> finalStats
    finalStats --> [*]: no
    finalStats --> name: yes