ASSETS & ROOMS
The visual "skin" for anything you want to appear on the screen.
a sprite
This event runs once, the instant the object is created in the game.
Create event
The true/false data type shown as a checkbox; the type used for movingRight.
Boolean
The two values shown in the Room Editor's lower-left as you move the mouse.
x and y coordinates
The kind of statement an "If Variable" block makes: it checks true/false, then runs code.
Conditional Statement
The interactable asset you place in a room; you make one every time you make a sprite.
an object
This event runs every frame (about 60 times a second) and holds most of your game logic.
Step Event
What operator adds to the current value instead of replacing it, and it's the code version of the relative checkbox?
+=
In GameMaker, making this coordinate bigger moves an object down the screen.
y
Checking this box in an Assign Variable block means "add to the current value" instead of "set it.
relative
The scenes that hold objects and display what appears on the game screen.
rooms
The event you use to draw a score or other text on top of the game.
Draw GUI Event
Why does: draw_text(20, 20, Score: 5) throws an error
The "Score: 5" should be in quotes because it is a string.
True or false: you need a while loop in the Step event to make the cube circle forever.
False
When the cube reaches the right wall, movingRight gets set to this value.
false
The width-and-height measurement every room must share so the screen doesn't resize mid-game
aspect ratio
The function that prints a message to the Output window to help you troubleshoot
show_debug_message()
What is the difference between a Real variable and an Integer variable? Give examples.
A Real variable can hold numbers with decimals (fractional values), while an Integer holds whole numbers only.
The built-in variable that actually makes an instance move; "Set Point Direction" only aims it.
image_speed
The window where your show_debug_message text appears when the game runs.
Output Window
Stackable groups inside a room; you might have separate ones for the player, walls, and background
layers
What does GUI Stand for?
Graphical User Interface
The naming style where the first word is lowercase and each word after is capitalized, like movingRight.
camelCase
Because x is the sprite's left edge, moving-right stops when x is greater than or equal to this expression.
What is room_width - sprite_width
You can't just add the number totalClicks to your text (GML throws a type error). To print it on one line, you wrap it in this function first.
string()
E.g show_debug_message("Clicks: " + string(totalClicks));