Y8 - GM - L02 - Do Now Quiz (Co-ordinates–Angles–Axis-Variables)

Maths Links in Gamemaker

The axis system in Gamemaker is slightly different from what you have experienced. The X axis values are the same but the Y axis values are reversed.

-

Can you label the axis values correctly for Gamemaker?

a

b

c

d

X-

Y+

X+

Y-

Gamemaker Co-ordinates System

In Gamemaker to move an object to the RIGHT you will need to:​ (a)   the objects ​ (b)   axis value

In Gamemaker to move an object to the LEFT you will need to:​ ​ (c)   the objects ​ (d)   ​ axis value

• INCREASE
• X
• DECREASE
• Y

Gamemaker Co-ordinates System

In Gamemaker to move an object UP you will need to:​ ​ (a)   the objects ​ (b)   axis value

In Gamemaker to move an object DOWN you will need to:​ ​ (c)   the objects ​ ​ (d)   ​ axis value

• INCREASE
• Y
• X
• DECREASE

Maths Links in Gamemaker

The angles system in Gamemaker is different from what you are used to in Maths. In Gamemaker 0 degrees points to the right.

-

Using this information can you correctly label the angles?

a

b

c

d

90 degrees

270 degrees

0 degrees

180 degrees

Angles in Gamemaker

-

In Gamemaker to point an object UP on the screen you will need to set its angle to?

Angles in Gamemaker

-

In Gamemaker to point an object LEFT on the screen you will need to set its angle to?

Angles in Gamemaker

-

In Gamemaker to point an object DOWN on the screen you will need to set its angle to?

Angles in Gamemaker

-

In Gamemaker to point an object RIGHT on the screen you will need to set its angle to?

Maths Links in Gamemaker

The Gamemaker co-ordinates system is slightly different from what you are used to seeing in Maths. The X axis behaviours as you would expect but on the Y axis positive numbers go down and negative numbers go up the axis.

-

Also in Gamemaker the room coordinates start in the top left of each room with 0,0.

-

Can you correctly label the room co-ordinates?

a

b

c

d

e

X:-32, Y:0

X:0, Y:-32

X: 800, Y: 0

X:800, Y:960

X:0, Y:960

Maths Links: ​ Co-ordinates in Gamemaker

You want to create an object off the top of the screen in Gamemaker.

• -

• Which Y axis coordinate should you use?,

• ​ (a)  

• -50
• 32
• 0
• 50