IAT 167 Lecture : IAT167-Week 8 and 9 Lectures.docx

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goldgerbil543

25 Mar 2012

School

Simon Fraser University

Department

Interactive Arts & Tech

Course

IAT 167

Professor

Jack Stockholm

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Document Summary

Events are objects that are raised by the dispatcher, caught by the listener, and passed to the. Custom events can be used to pass variables from the sender (dispatcher) to the receiver (listener) If you want to measure from the edge, take the registration point +/- half of the width / height of the object. Problem 2: detection across time in the game loop. Actionscript instrinsics hittestobject: boundary box collision detection, fast and efficient, not precise. hittestpoint: higher precision, but only tests if a single point is in an object. Meaningful play: discernible and integrated relationship between actions and outcomes. Glory: no impact on the gameplay, such as reaching the end, completion, score, achievements. Sustenance: maintain status quo, health power-ups, removal of curses / diseases, blockages. Access: new locations or resources, used once, no other value once used, keys, passwords, picklocks. Facility: do new things you couldn"t do before.

Related Questions

A student proposes to measure the gravitational constantGby suspending two spherical objects from the ceiling of atallcathedral and measuring the deflection of the cables fromthevertical. Draw a free-body diagram of one of the objects. (Dothison paper. Your instructor may ask you to turn in thiswork.)

If two 130.0 kg objects are suspendedat the lower ends of cables40.00 mlong and the cables are attached to the ceiling 1.000 mapart, whatis the deflection of each object? (Use 1.000 m for theseparationdistance in the expression for the gravitational forceand assumethat the deflection is extremely small compared to 1m.)
1 m

this problem has two possible answers but it only wantsone

A student proposes to measure the gravitational constantGby suspending two spherical objects from the ceiling of atallcathedral and measuring the deflection of the cables fromthevertical. Draw a free-body diagram of one of the objects.

If two 145.0 kg objects are suspendedat the lower ends of cables35.00 mlong and the cables are attached to the ceiling 1.000 mapart, whatis the deflection of each object? (Use 1.000 m for thedistance inthe gravitational force and assume that the deflectionis extremelysmall.)

Perform a computer calculation for an object moving vertically inair under gravity and experiencing a retarding force proportionalto the square of the object's speed (see Equation 2.21). Usevariables m for mass and r for the objects radius. All the objectsare dropped from rest from the top of a 100-m-tall building. Use avalue of cw=.5 and make computer plot the height y, speed v, andacceleration a versus t for the following conditions and answer thequestions:
a. A baseball of m=.145 kg and r=.0366m
b. a ping-pong m=.0024 kg and r=.019m
c. a raindrop of r=.003 m.
d. Do all the objects reach their terminal speeds? Discuss thevalues of the terminal velocities and explain theirdifferences.
e. Why can a baseball be thrown farther than a ping-pong ball eventhough the baseball is so much more massive?
f. Discuss the terminal speeds of big and small raindrops. What arethe terminal speeds of raindrops have radii .002m and .004m?

IAT 167 Lecture : IAT167-Week 8 and 9 Lectures.docx

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