Gml

Front 1

get_string("Question","Input");

Back 1

Allows users to define the text in a var or obj.

Front 2

draw_text(x,y,variable or "text");

Back 2

Draws the defined variable or "text" at x,y, coordinates.

Front 3

room_goto(roomname)

Back 3

Sends the user to specified room.

Front 4

ObjName.var-=x;

Back 4

Used when referencing another obj in a script.

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if var == x

{

statement;

}

Back 5

If statement. If var == x, then the statement will be completed.

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&&

Back 6

'And' expression. If var1==1 && var2==1 then the following code will be executed.

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!

Back 7

'Not' expression. If var1 != 0 then the following code will be executed. (If var1 does not equal 0)

Front 8

var[1] = 2

var[2] = 4

Back 8

1D array. Useful for setting up an inventory, intro, etc.

Front 9

var[1,2]="text"

var[1,2]=4

Back 9

2D array. Useful for adding multiple vars to an obj.

Front 10

random()

Back 10

function. Gets any number within its range.

if var(random(100)) = 0

{

do this

}

Front 11

round()

Back 11

function. Use with random() to get a whole number

round(random(12,24,38,50,62))

Front 12

-- Check to see If player's health is 0. If so, then show message "You have died."

Back 12

if player.health = 0

{

show_message("You have died.")

}

Front 13

instance_create(x,y,obj)

Back 13

Function. Create a random instance of an obj @ x,y.

Front 14

Function. Without specification, destroys the instance's self.

Back 14

instance_destroy()

Front 15

instance_nearest(x,y,obj)

Back 15

Function. Finds the nearest instance of an object within x,y.

Front 16

instance_furthest(x,y,obj)

Back 16

Function. Finds the nearest instance of an object within x,y.

Front 17

Function. Move towards a certain x,y point at a designated speed.

Back 17

move_towards_point(x,y,speed)

Front 18

Function. Restart the game.

Back 18

game_restart()

Front 19

Function. Goto a specific room.

Back 19

goto_room(room)

Front 20

Vspeed = 0

Back 20

Set the Vertical Speed to 0

Front 21

place_meeting(x,y,obj)

Back 21

Checks for a collision at x,y with obj.

Use with If to check for a collision.

if place_meeting(x,y+1,obj_ground) && vspeed>=0

{

vspeed=-6

}

Front 22

--Check for a collision with obj_test at 6 steps to the right. If true, set vertical speed to -10.

(Use this with a keyboard press.)

Back 22

if place_meeting(x+6,y,obj_test)

{

vspeed=-10

}

Front 23

--Check if the player is free from contact at y+1. If so, set gravity to 0.5.

Back 23

if(place_free(x,y+1))

{

gravity=0.5

}

Front 24

--Move the player to contact with solid obj in 270 direction (down) at max of 12.

Back 24

move_contact_solid(270,12)

Front 25

Direction - 0 degrees

270 degress

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0 - Right

270 - Down

Front 26

Draw_sprite(sprite,subimage,x,y)

Back 26

Draws the specified sprite and subimage @ x,y.

Front 27

Draw_Sprite_Tiled(sprite,subimage,x,y)

Back 27

Draw tiled sprite and subimage @ x,y

Front 28

Draw a background @ x,y.

Back 28

draw_background(background,x,y)

Front 29

Used to obtain a random value between two provided values & put into a variable.

Back 29

var = random(1,10)

Front 30

Execute scripts (2 ways)

Back 30

Directly: script_name(arg,obj_player,0.12,false) -- works like a function.

Script Execute: script_execute(script_name,arg,obj_player,0.12,falst)

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Arguments

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From Arg0 to a max of 16 Args, accessed within the scripts using keyword "argument0"

Front 32

Expression to combine two strings.

Back 32

Plus sign +.

string = "x" + "y";

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Not equal to

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Expression !=

Front 34

OR. Will return true if atleast one of the Booleans are true.

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|| or

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XOR. Will return true if one of the Booleans is true and the other is false.

Back 35

^^ xor

Front 36

Inefficient method for checking multiple conditions.

Back 36

if(color == blue || color == green || color == red)

{

temperature = "cold";

}

else if(color == red || color = orange || color = yellow)

{

temperature = "x";

}

etc... Use a switch statement instead.

Front 37

Switch

Back 37

Statement. Used with keywords "switch","case","break" and "default."

switch (color)

{

case red:

case orange:

case yellow:

temperature = "warm";

break;

case green:

case blue:

case purple:

temperature = "cool";

break;

default:

temperature = "other";

break;

}

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Difference between Loop and Repeat

Back 38

Loop is used to execute a program multiple times.

Repeat is used to execute a program for a specified number of times.

Front 39

Repeat 10 times

Back 39

repeat (10)

{

instance_create(random(100),random(100),obj_x)

}

Front 40

While

Back 40

used to execute a program until the condition is no longer met.

while ( x > 100)

{

x -= 10;

}

Front 41

Do statement

Back 41

Like 'While' statements, except they use the keyword ''Until." Will be executed first, then checked.

do

{

x-=10

}

until (x <= 100);

Front 42

For

Back 42

var I;

for (I=0 ; I < 10; I++)

{

instance_create(I*100 + 25, 25, obj_button)

}

I=0 sets the local variable to 0.

I<10, checks if I is less than ten.

If so, then increment I.

Front 43

a

Back 43

a