AssignmentofStanfordUniversityCS193pSpring2021Lecture5-6资源-CSDN文库

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CS193P IOS APPLICATION DEVELOPMENT SPRING 2021

Assignment III: Set

Objective

The goal of this assignment is to give you an opportunity to create your ﬁrst app

completely from scratch by yourself. It is similar enough to the ﬁrst two assignments

that you should be able to ﬁnd your bearings, but different enough to give you the full

experience!

Since the goal here is to create an application from scratch, do not start with your

assignment 2 code, start with New → Project in Xcode.

Be sure to review the Hints section below!

Also, check out the latest in the Evaluation section to make sure you understand what

you are going to be evaluated on with this assignment.

Due

This assignment is due in 10 days because it is larger in scope than assignments 1 and 2.

It is effectively a “ﬁrst midterm” in this course, so start working on it early. Check out

the very last Hint.

Materials

• You can use any of the code from lecture (e.g. AspectVGrid which you can ﬁnd here).

• You will want to review the rules to the game of Set.

PAGE OF ASSIGNMENT III: SET1 8

CS193P IOS APPLICATION DEVELOPMENT SPRING 2021

Required Tasks

1. Implement a game of solo (i.e. one player) Set.

2. As the game play progresses, try to keep all the cards visible and as large as possible.

In other words, cards should get smaller (or larger) as more (or fewer) appear on-

screen at the same time. It’s okay if you want to enforce a minimum size for your

cards and then revert to scrolling when there are a very large number of cards.

Whatever way you deal with “lots of cards” on screen, it must always still be possible

to play the game (i.e. cards must always be recognizable, even when all 81 are in play

at the same time).

3. Cards can have any aspect ratio you like, but they must all have the same aspect ratio at

all times (no matter their size and no matter how many are on screen at the same

time). In other words, cards can be appearing to the user to get larger and smaller as

the game goes on, but the cards cannot be “stretching” into different aspect ratios as

the game is played.

4. The symbols on cards should be proportional to the size of the card (i.e. large cards

should have large symbols and smaller cards should have smaller symbols).

5. Users must be able to select up to 3 cards by touching on them in an attempt to make

a Set (i.e. 3 cards which match, per the rules of Set). It must be clearly visible to the

user which cards have been selected so far.

6. After 3 cards have been selected, you must indicate whether those 3 cards are a match

or mismatch. You can show this any way you want (colors, borders, backgrounds,

whatever). Anytime there are 3 cards currently selected, it must be clear to the user

whether they are a match or not (and the cards involved in a non-matching trio must

look different than the cards look when there are only 1 or 2 cards in the selection).

7. Support “deselection” by touching already-selected cards (but only if there are 1 or 2

cards (not 3) currently selected).

8. When any card is touched on and there are already 3 matching Set cards selected,

then …

a. as per the rules of Set, replace those 3 matching Set cards with new ones from the

deck

b. if the deck is empty then the space vacated by the matched cards (which cannot be

replaced since there are no more cards) should be made available to the remaining

cards (i.e. which may well then get bigger)

c. if the touched card was not part of the matching Set, then select that card

d. if the touched card was part of a matching Set, then select no card

PAGE OF ASSIGNMENT III: SET2 8

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