WorksheetsY8 - GM - L02 - Do Now Quiz (Co-ordinates–Angles–Axis-Variables)
Total questions: 13
Worksheet time: 18mins
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.
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Can you label the axis values correctly for Gamemaker?
X+
X-
Y+
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
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
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.
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Using this information can you correctly label the angles?
0 degrees
90 degrees
180 degrees
270 degrees
Angles in Gamemaker
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In Gamemaker to point an object UP on the screen you will need to set its angle to?
(a)
Angles in Gamemaker
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In Gamemaker to point an object LEFT on the screen you will need to set its angle to?
(a)
Angles in Gamemaker
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In Gamemaker to point an object DOWN on the screen you will need to set its angle to?
(a)
Angles in Gamemaker
-
In Gamemaker to point an object RIGHT on the screen you will need to set its angle to?
(a)
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.
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Also in Gamemaker the room coordinates start in the top left of each room with 0,0.
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Can you correctly label the room co-ordinates?
X: 800, Y: 0
X:0, Y:960
X:800, Y:960
X:0, Y:-32
X:-32, Y:0
Maths Links: Co-ordinates in Gamemaker
You want to create an object off the top of the screen in Gamemaker.
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Which Y axis coordinate should you use?,
(a)
Image Alpha Value
The alpha value of an image is how transparent it is.
You can set the transparency value between 0 and 1.
1 is no transparency and 0 is completely transparent, 0.5 is 50% transparency.
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Can you correctly label the transparency levels of the bubble graphics?
0.1
1
0.75
0.5
0.25
A (a) is a reserved area of (b) where you can store some information while your program is running. They are essential for remembering (c) during the game.
You must tell the computer what type of (d) you are going to store in variable when you set it up. This is so the computer knows how to treat and handle the data when it is stored as a computer treats text differently to numbers, i.e. the computer will not allow maths (e) to be carried out on text.
Variable Data Types
There are lots of different data types that can be set for a variable depending on what data you want to store.
To store WHOLE NUMBERS only (no decimals) you must set the variable data type to: (a)
To store TEXT you must set the variable data type to: (b)
To store a TRUE or FALSE value you must set the variable data type to: (c)
To store DECIMAL NUMBERS you must set the variable data type to: (d)
