D&D to GML

Here is a conversion of the drag and drop options in Game Maker to their Game Maker Language equivalent.

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Table of Contents

Move

Move Fixed

move_fixed( direction, speed );

Move Free

motion_set(direction,speed);

motion_set()

Move Towards

move_towards_point(x,y,speed);

move_towards_point()

Speed Horizontal

hspeed = speed;

hspeed()

Speed Vertical

vspeed = speed;

vspeed()

Set Gravity

gravity_direction = direction; 
gravity = amount;

gravity
gravity_direction

'Reverse Horizontal'

hspeed = -hspeed;

'Reverse Vertical'

vspeed = -vspeed;

'Set Friction'

friction = amount;

'Jump to Position'

x = value;
y = value;

'Jump to Start'

x = xstart;

y = ystart;

'Jump to Random'

move_random(1,1);

'Align to grid'

move_snap(hsnap,vsnap);

'Wrap Screen'

move_wrap(hort,vert,margin);

'Move to Contact'

move_contact_solid(dir,maxdist);

move_contact_all(dir,maxdist);

'Bounce'

move_bounce_solid(advanced);

move_bounce_all(advanced);

'Set Path'

path_start(path,speed,endaction,absolute);

'End Path'

path_end();

'Path Position'

path_position = value;

'Path Speed'

path_speed = value;

'Step Towards'

mp_linear_step(x,y,stepsize,checkall);

'Step Avoiding'

mp_potential_step(x,y,stepsize,checkall);

Main1

'Create Instance'

instance_create(x,y,object0);

'Create Moving'

ID = instance_create(x,y,object1);
with (ID) motion_set(direction,speed);

'Create Random'

instance_create(x,y,choose(object0,object1,object2,...));

'Change Instance'

instance_change(obj,perf);

'Destroy Instance'

instance_destroy();

'Destroy at Position'

position_destroy(x,y);

'Change Sprite'

sprite_index = sprite0;

'Transform Sprite'

image_xscale = value;
image_yscale = value;
image_angle = value;
image_xscale = -image_xscale;
image_yscale = -image_yscale;

'Color Sprite'

image_blend = color;
image_alpha = value;

'Play Sound'

sound_play(sound);

sound_loop(sound);

'Stop Sound'

sound_stop(index);

'Check Sound'

if sound_isplaying(sound1) = true 
{
  sound_stop(sound1)
}
else
{
  if sound_isplaying(sound2)
{
    sound_stop(sound2)
 }
}

transition kind = value;

'Previous Room'

room_goto_previous();

'Next Room'

room_goto_next();

'Restart Room'

room_restart();

'Different Room'

room_goto(room);

'Check Previous'

if room_previous(room) != -1 
{
  room_goto_previous();
}

'Check Next'

if room_next(room) != -1 
{
  room_goto_next();
}

Main2

'Set Alarm'

alarm[0] = value;

'Sleep'

sleep(numb);

'Set Timeline'

timeline_index = timeline;

'Set Timeline Position'

timeline_position = value;

'Display Message'

show_message('Hello');

'Show Info'

show_info();

'Show Video'

show_video(fname,full,loop);

'Restart Game'

game_restart();

'End Game'

game_end();

'Save Game'

game_save(fname);

'Load Game'

game_load(fname);

'Replace Sprite'

sprite_replace(ind,fname,imgnumb,precise,transparent,smooth,preload,xorig,yorig);

'Replace Sound'

sound_replace(index,fname,kind,loadonuse);

/kind: 0-normal, 1-background, 2-3d, 3-mmplayer

'Replace Background'

background_replace(ind,fname,transparent,smooth,preload);

Control

'Check Empty'

if place_free(x+4,y) { /actions here. } 
{
  x += 4;
}
/Can also be "not" place_free: if !place_free(x+4,y)

'Check Collision'

if place_meeting(x,y,object) { /actions here. }

if collision_point(x,y,obj,prec,notme) { /actions here. }

if collision_rectangle(x1,y1,x2,y2,obj,prec,notme) { /actions here. }
if collision_circle(xc,yc,radius,obj,prec,notme) { /actions here. }
if collision_ellipse(x1,y1,x2,y2,obj,prec,notme) { /actions here. }
if collision_line(x1,y1,x2,y2,obj,prec,notme) { /actions here. }

'Check Object'

if place_meeting(x,y,object0) { /actions here. }

'Test Instance Count'

if instance_number(obj) = value { /actions here. }

'Test chance'

if floor(random(value)) = 0 { /actions here. }

/value represents sides of dice

'Check Question'

if show_question('Do you want to do this?') { / actions here. }

'Test Expression'

if (expression) { / actions here. }

/Examples for expression would be: x = 5, y > 10, global.item = 'Key'.

'Check Mouse'

if mouse_check_button(mb_left)
{
  if cursor_sprite=sprLineS
  {
    instance_create(mouse_x,mouse_y,objLineS);
  }
  else if cursor_sprite=sprLineM
  {
    instance_create(mouse_x,mouse_y,objLineM);
  }
  else if cursor_sprite=sprLineL
  {
    instance_create(mouse_x,mouse_y,objLineL);
  }
}

/Buttons can be: mb_none,mb_left, mb_middle, or mb_right.

'Check Grid'

if place_snapped(value,value) { /actions here. }

'Start Block'

GML uses brackets "{" for blocks of commands.

'End Block'

GML uses brackets "}" for blocks of commands.

'Else'

if x = 50
{
  hspeed = 2;
  vspeed = -2;
}
else
{
  motion_set(90,1);
}

/When value of the test is false (x != 50), commands under "else" are executed.

'Exit Event'

exit;

'Repeat'

repeat (value) { /actions here. };

/Example: repeat (10) instance_create(x,y,object0); creates 10 object0 at x,y

'Call Parent Event'

event_inherited();

'Execute Code'

-no code available in GML-

'Execute Script'

script_execute(ind,arguments);

'Comment'

GML uses 2 slashes "//" for a comment.

'Set Variable'

use "=" operator to assign to a variable.

Examples:

health = 50;
lives = 3;
name = 'Gordon';

/Use 'global.' for your own variables that are to be used by more than one object...
global.name = 'Gordon';

/You do not need to use global for built-in variables like 'lives', or 'score'.

'Test Variable'

/Use an if statement to check this. Example:

if lives = 0 { /actions here. }

'Draw Variable'

draw_text(x,y,variable);

/Use "+" to draw more variables in one line: draw_text(x,y,varible1 + ',' + variable2 + ...)

Score

'Set Score'

score = value;

'Test Score'

if score = value { /actions here. }

'Draw Score'

draw_text(x,y,'Score: ' + string(score));

'Show Highscore'

highscore_set_background(back);
highscore_set_border(show);
highscore_set_colors(back,new,other);
highscore_set_font(name,size,style);
highscore_show(numb);

'Clear Highscore'

highscore_clear();

'Set Lives'

lives = value;

'Test Lives'

if lives = value { /actions here. }

'Draw Lives'

draw_text(x,y,'Lives: ' + string(lives));

'Draw Life Images'

var a;
a = 0;
repeat(lives)
{
  draw_sprite(sprite0,0,view_xview+a,view_yview);a += sprite0.sprite_width;
}

'Set Health'

health = value;

'Test Health'

if health = value { /actions here. }

'Draw Health'

draw_healthbar(x1,y1,x2,y2,amount,backcol,mincol,maxcol,direction,showback,showborder);

'Score Caption'

show_score = value;
caption_score = string;
show_lives = value;
caption_lives = string;
show_health = value;
caption_health = string;

Extra

'Create Part System'

index=part_system_create();

'Destroy Part System'

part_system_destroy(index);

'Clear Part system'

part_system_clear(index);

'Create Particle'

index = part_type_create();
part_type_shape(index,shape);
part_type_size(index,size_min,size_max,size_incr,size_rand);
part_type_color(index,color_start,color_middle,color_end);

'Particle Color'

part_type_color1(ind,color1);
part_type_color2(ind,color1,color2);
part_type_color3(ind,color1,color2,color3);

part_type_color_mix(ind,color1,color2);  or...
part_type_color_rgb(ind,rmin,rmax,gmin,gmax,bmin,bmax);  or...
part_type_color_hsv(ind,hmin,hmax,smin,smax,vmin,vmax);

'Particle Life'

part_type_life(index,life_min,life_max);

'Particle Speed'

part_type_speed(index,speed_min,speed_max,speed_incr,speed_rand);
part_type_direction(index,dir_min,dir_max,dir_incr,dir_rand);

'Particle Gravity'

part_type_gravity(index,grav_amount,grav_dir);

'Particle Secondary'

part_type_death(index,death_number,death_type);

'Create Emitter'

index=part_emitter_create(ps);
part_emitter_region(ps,index,xmin,xmax,ymin,ymax,shape,distribution);

'Destroy Emitter'

part_emitter_destroy_all(ps);

'Burst from Emitter

part_emitter_burst(ps,index,parttype,number);

'Stream from Emitter'

part_emitter_stream(ps,index,parttype,number);

You must call the function cd_init() before calling other Cd functions.

'Play CD'

cd_play(first,last);

'Stop CD'

cd_stop();

'Pause CD'

cd_pause();

'Resume CD'

cd_resume();

'Check CD'

if cd_present() = true { /actions here. }

'Check CD playing'

if cd_playing() = true { /actions here. }

'Set Cursor'

window_set_cursor(curs);
cursor_sprite=sprite0;

'Open a Web Page'

execute_shell('http//www.somepage.com',0);

Draw

'Draw Sprite'

draw_sprite(sprite,subimage,x,y);

'Draw Background'

draw_background(back,x,y);

draw_background_tiled(back,x,y);

'Draw Text'

draw_text(x,y,string);

'Draw Scaled Text'

draw_text_transformed(x,y,string,xscale,yscale,angle);

'Draw Rectangle'

draw_rectangle(x1,y1,x2,y2,outline); 

/Outline is 1 or 0 for yes or no.

'Horizontal Gradient'

draw_rectangle_color(x1,y1,x2,y2,col1,col2,col3,col4,outline);

'Vertical Gradient'

draw_rectangle_color(x1,y1,x2,y2,col1,col2,col3,col4,outline);

'Draw Ellipse'

draw_ellipse(x1,y1,x2,y2,outline);

'Gradient Ellipse'

draw_ellipse_color(x1,y1,x2,y2,col1,col2,outline);

'Draw Line'

draw_line(x1,y1,x2,y2);

'Draw Arrow'

draw_arrow(x1,y1,x2,y2,size);

'Set Color'

draw_set_color(col);

'Set Font'

draw_set_font(font);
draw_set_halign(halign);
draw_set_valign(valign);

/halign and valign : 0 for left/top, 1 for center, 2 for right/bottom

'Set Full Screen'

window_set_fullscreen(full);

'Take Snapshot'

screen_save(filename);

'Create Effect'

effect_create_below(efkind,x,y,size,color);

effect_create_above(efkind,x,y,size,color);

various effects:
ef_explosion, ef_ring, ef_ellipse, ef_firework, ef_smoke, ef_smokeup, ef_star, ef_spark,
ef_flare, ef_cloud, ef_rain, ef_snow

Formula for destroying an object hitting only the top of it:

if (vspeed > 0 and y < other.y + other.sprite_height)
{
  with(other) instance_destroy();
}

Game Maker

Free Game Maker Tutorials & Game Maker Help Wiki

Move

Main1

Main2

Control

Score

Extra

Draw