Google + Content reposting - 28th April 2015

Digital and Interactive Games 2015 – Term 2, Session 2
S2W1Q1

Today
Casting
While Loop
Input
Some simple Maths and figures

int i = 10;
float f = 10.25;

i = (int)f;

while loop
while (condition(s)) {

}

sum to n (from 1)

int sum = 0;
int n = 10;
int i = 1;

while (i < n) {
    sum += I;
    i += 1;
}

It is important to know who to 'walk' through the code.

int sum = 0;
int n = 10;
int i = 1;

while (i < n) {
    sum += I;
    i += 1;
}
System.out.Println(sum);


int sum = 0;
int n = 10;
int i = 1;

while (i < n) {
    sum += I;
    i += 1;
}
System.out.Println((float)sum);
boolean exit;

int sum = 0;
int n = 10;
int i = 1;

while(!exit) {
    sum += I;
    i += 1;
    if (i < n)exit = true;
}
System.out.Println((float)sum);


BMI calculation
–    Formula

BMI = mass/weight

Think
–    Formula
–    variable types
–    test values


Factorial (maximum of 12)
–    Formula
–    Variables
–    how many times?
–    Hold result, counter, temp

BMI Calculation
Declare BMI
Declare Mass
Declare height
Calculate

Factorial
No input larger than 12
LoopsTrajectories

<a href="http://s483.photobucket.com/user/Brenorenz/media/W9S004_zps6mvllvka.png.html" target="_blank"><img src="http://i483.photobucket.com/albums/rr193/Brenorenz/W9S004_zps6mvllvka.png" border="0" alt=" photo W9S004_zps6mvllvka.png"/></a>
http://i483.photobucket.com/albums/rr193/Brenorenz/W9S004_zps6mvllvka.png

Fifth Program
char ch;

System.out.Println(“Enter a key and press enter”);

ch (char) System.in.read();

System.out.Println(“Your Key is: “ + ch);


Trajectories

<a href="http://s483.photobucket.com/user/Brenorenz/media/W9S005_zpsfvpnqjpl.png.html" target="_blank"><img src="http://i483.photobucket.com/albums/rr193/Brenorenz/W9S005_zpsfvpnqjpl.png" border="0" alt=" photo W9S005_zpsfvpnqjpl.png"/></a>
http://i483.photobucket.com/albums/rr193/Brenorenz/W9S005_zpsfvpnqjpl.png

Speed of the Plane
700 km/hr → m/s
700 * 1000 m/hr
700 * 1000m/60 min
700 * 1000 m/3600s

194.4m/s

1 ) (Speed x 1000)/(60 * 60)

Math function

2 Velocity * Math.cos(angle)

angle.degreeAngle * Math.PI/180

Distance = velocity x time

time = distance / velocity
= 10.29s
Initial velocity

yVelocity * Math.sin(angle);

y = vy + (1/2)g(t^2)


Quadratic formula

x = (b +/ (b^2 – 4ac)^0.5)/(2a)
t = (vy +/(vy^2 – 5 * 4.9 * 2000)^0.5)/(2 * 4.9)

Square root
Math.sqrt
Power
Math.pow(base, 2)


#gamedesign   #gameprogramming   #java   #programming