# Using the Board to create interesting games

CASCON 2007 Workshop Presentation 1 USING THE BOARD TO CREATE (INTERESTING, USEFUL, EXTENDIBLE...) GAMES Troy Vasiga 02/06/20 Lecturer, Cheriton School of Computer Science University of Waterloo Outline 2

What makes an assignment good? Introduction and overview of Board class Motivation Simple animations and extensions Dealing with clicks and lines Larger scale projects Summary CASCON 2007 Workshop Presentation 02/06/20 3

What makes an assignment good? Assignments should be: Interesting Approachable (for beginning students) Extendible (for higher level students) Useful Related to the curriculum CASCON 2007 Workshop Presentation 02/06/20

Board overview 4 Create one dimensional and two dimensional Boards of arbitrary (discrete) size Boards allow us to put pegs (of virtually any colour) and remove pegs

Boards allow us to place lines between any two positions and remove lines Boards allow messages to be printed Boards allow us to obtain their size Boards allow mouse clicks to be obtained from each position See handout: BoardReference.pdf CASCON 2007 Workshop Presentation 02/06/20 My motivation 5 CASCON 2007 Workshop Presentation 02/06/20 Pong 6

CASCON 2007 Workshop Presentation 02/06/20 Breakout 7 CASCON 2007 Workshop Presentation 02/06/20 Kaboom 8 CASCON 2007 Workshop Presentation 02/06/20 Fundamentals

9 All these games have Low-resolution (good for the board) Discrete motion Simple animation involving a moving ball Simple animation involving a blocker/ bouncer CASCON 2007 Workshop Presentation 02/06/20

Simple Animation 10 This program should be accessible to all students Deals only with method calls No if statements No loops

Specification: create a one-dimensional board of size 5. Have a black peg move across from left to right as if it was moving. It should disappear at the end. Enhancements: Have it loop Have it bounce back and forth CASCON 2007 Workshop Presentation 02/06/20 More extensions 11

Instead of simply bouncing, lets have the animation do something more complicated, like go in a spiral. A static version is shown here: spiral.pdf Note the ability for students at various levels to approach this problem: Simple lines Static points Dynamic animation CASCON 2007 Workshop Presentation 02/06/20 12

Getting a grasp on clicks and lines To begin, we will get a grasp on clicks This will be the input mechanism to move the bouncer A nice warm up exercise: linedraw.pdf Simple loop, no if statements, very few variables CASCON 2007 Workshop Presentation

02/06/20 Simple bouncer 13 Lets create the bouncer It should move along the bottom of a given board A click to the right of the bouncer should move it to the right. A click to the left of the bouncer should move it to the left.

CASCON 2007 Workshop Presentation 02/06/20 Larger scale projects 14 Flipper: flipper.pdf Checkers Chess (colours can be different pieces: messages can indicates which pieces are being moved) Mario-type game

CASCON 2007 Workshop Presentation 02/06/20 Summary 15 The Board offers lots of benefit Little overhead (compared to other

graphics libraries in Java) Discrete, integer based model Easy to create animation Accessible to students of all ability (easy to partition assignments into approachable levels) Free CASCON 2007 Workshop Presentation 02/06/20

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