Program design and implementation Sept 7, 2010 – Day 2 Object-oriented Programming thru Video...

Program design and Program design and implementationimplementationSept 7, 2010 – Day 2Sept 7, 2010 – Day 2Object-oriented Programming thru Video GamesTIDE 1840Harry HowardTulane University

Course organizationCourse organizationhttp://www.tulane.edu/~howard/

TIDE1840/Please, no food or drink!

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Course organizationCourse organizationThe SD card

on my camera screwed up, and I lost a few photos.

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Course organizationCourse organizationWe have a budget

of $75 per enrolled student: 12 x $75 = $900.◦ I suggest that we

have dinner at Jacques-Imo’s some night

◦ I will invite you to a Doodle poll to find an evening when most people can attend.

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GETTING STARTED GETTING STARTED WITH ALICEWITH ALICE

Dann, Cooper & Pausch §I.1

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Exercises p. 19ffExercises p. 19ffIslandWinterSnowpeople pileTea partySoldiers on deck

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PROGRAM DESIGN PROGRAM DESIGN AND AND IMPLEMENTATIONIMPLEMENTATION

Dann, Cooper & Pausch §I.2

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Some terminologySome terminologyProgramInstructionScenario

◦A statement of the problem or task that the animation addresses = requirement specification

StoryboardAlgorithmPseudocode

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Steps to creating an Steps to creating an animationanimation1. Read the scenario2. Design3. Implement4. Test

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Read the scenarioRead the scenarioWhat questions does a scenario

answer?◦What story is to be told?◦What objects are needed?◦What actions take place?

Take 10 minutes to make up a scenario and then share it with the class.

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DesignDesignCreate a storyboard

◦See example of a visual storyboard on the next page.

◦Each sketch is a snapshot of a scene, known as a state in computer science.

◦It helps to use a template, see slides10 and 11.

◦If making a visual storyboard is too time consuming, the alternative is to make a textual storyboard, see slide 12.

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Example of a storyboardExample of a storyboard

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Storyboard template

Storyboard template

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Scene Number: 1Scene Number: 1

Sound: NoneText: None

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DescriptionThe initial scene.

The book’s example, p. 28The book’s example, p. 28Do the following steps in order

◦alien moves up◦alien says “Slithy toves?”◦robot’s head turns around◦robot turns to look at alien◦Do the following steps together

robot moves toward the alien robot legs walk

◦etc.Note that this looks like

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Evaluate and reviseEvaluate and reviseDoes the action flow from scene

to scene as the story unfolds?Do any transitions need to be

added to blend one scene to the next?

Did you overlook any part of the story?

Is there something about the story that should be changed?

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§I.3 PROGRAMMING: §I.3 PROGRAMMING: PUTTING THE PIECES PUTTING THE PIECES TOGETHERTOGETHER

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