Designing Games with Game Maker - YoYo Games

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the bottommost instance at the position to the top or send the topmost instance to the bottom. Room setting Each room has a number of settings that you can change by clicking on the settings tab. Each room has a name. Best give it a meaningful name. There also is a caption. This caption is displayed in the window caption when the game is running. You can set the width and height of the room (in pixels). Also you can set the speed of the game. This is the number of steps per second. The higher the speed, the smoother the motion is. But you will need a faster computer to run it. Setting the background With the tab backgrounds you can set the background image for the room. Actually, you can specify multiple backgrounds. The tab page looks as follows:
At the top you will see the background color. You can click on it to change it. The background color is only useful if you don't use a background image that covers the whole room. Otherwise, best uncheck the box labeled Draw background color because this will be a waste of time. At the top you see a list of 8 backgrounds. You can define each of them but most of the time you will need just one or two. To define a background, first select it in the list. Next check the box labeled Visible when room starts otherwise you won't see it. The name of the background will become bold when it is defined. Now indicate a background image in the menu. There are a number of settings you can change. First of all you can indicate whether the background image should tile the room horizontally and/or vertically. You can also indicate the position of the background in the room (this will also influence the tiling). A different option is to stretch the background. The background will then be scaled so that it fills the entire room. The aspect ration of the image will not be maintained. Finally you can make the background scrolling by giving it a horizontal or vertical speed (pixels per step). Better not use scrolling <strong>with</strong> a stretched background. The result will be a bit jaggy. There is one more checkbox labeled Foreground image. When you check this box, the background is actually a foreground, which is drawn on top of everything else rather than behind it. Clearly such an image should be partially transparent to be of any use. Distributing your game
Page 1 and 2: What is New Designing Games with Ga
Page 3 and 4: It can now be indicated whether or
Page 5 and 6: • You can now set the variable cu
Page 7 and 8: Playing computer games is fun. But
Page 9 and 10: Upgrading to the Pro Edition Game M
Page 11 and 12: http://www.yoyogames.com/upgrade He
Page 13 and 14: simple: There is a blue ball bounci
Page 15 and 16: (Actually, this is what you see whe
Page 17 and 18: Resources menu In this menu, you ca
Page 19 and 20: When you make a game you normally s
Page 21 and 22: To create a background resource in
Page 23 and 24: whether this is a solid object (lik
Page 25 and 26: Here you select the event you want
Page 27 and 28: the keys pressed happen. Note that
Page 29 and 30: Key release events This event is si
Page 31 and 32: Relative. If you check this, the ne
Page 33 and 34: object is reached. If there already
Page 35 and 36: Transform Sprite Use this action to
Page 37 and 38: Sleep With this action you can free
Page 39 and 40: Check Collision This is the reverse
Page 41 and 42: peferably only for small pieces of
Page 43 and 44: provide the positions and the capti
Page 45 and 46: to right. You specify the rectangle
Page 47 and 48: You can change most of these variab
Page 49: To add instances to the room, first
Page 53 and 54: When you start Game Maker in advanc
Page 55 and 56: • Show the origin and bounding bo
Page 57 and 58: Editing your sprites Up to now we l
Page 59 and 60: • Scale. This command scales the
Page 61 and 62: • Disappear. Makes the image disa
Page 63 and 64: Once you selected the correct set o
Page 65 and 66: • Clear. Clear the image to the l
Page 67 and 68: Multiple normal sounds can play at
Page 69 and 70: You can indicate a number of settin
Page 71 and 72: When a ball hits the floor it must
Page 73 and 74: action it lets the instance take a
Page 75 and 76: The following additional draw actio
Page 77 and 78: dies. The transparency slowly chang
Page 79 and 80: Resume CD Resumes a paused CD. Chec
Page 81 and 82: e the way you left it the last time
Page 83 and 84: At the left top there is the curren
Page 85 and 86: At the top there is a box labeled E
Page 87 and 88: Letters range that contains all upp
Page 89 and 90: top tool bar. Here you can also ind
Page 91 and 92: You might wonder what happens when
Page 93 and 94: Set the time line position With thi
Page 95 and 96: As you might have noticed, parts of
Page 97 and 98: In this form you can indicate which
Page 99 and 100: about the game and how it was creat
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Resolution In this tab you can set
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Also you can set the priority of th
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Change to change a selected file, D
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Here you can set a number of option
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Game Maker contains a built-in prog
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• !: not, turns true into false a
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} instance_create(xx,yy,ball); Addr
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} obj[1].id.x = 12; The last statem
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{ } repeat (5) instance_create(rand
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} for (i=0; i
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A function has the form of a functi
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with (ball) { } x = random(room_wid
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andom_set_seed(seed) Sets the seed
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string_copy(str,index,count) Return
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date_get_hour(date) Returns the hou
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Generating Events Miscellaneous Var
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Paths move_bounce_all(adv) Bounces
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e careful how and when you apply it
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overwritten by the new path. (See a
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mp_grid_add_instances(id,obj,prec)
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instance_count* Number of instances
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When you deactivate instances they
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As you should know, every instance
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loading. You can also save and load
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score The current score. lives Numb
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ev_joystick1_button7 ev_joystick1_b
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Here are some variables and functio
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There is no game without interactio
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vk_insert insert key vk_pageup page
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You can change the way the mouse cu
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image_index When the image has mult
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ackground_height[0...7]* Height of
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,xscale,yscale,rot,c1,c2,c3,c4,alph
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ection,showback,showborder) With th
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Fonts and text In games you sometim
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This functionality is only availabl
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sprite_get_texture(spr,subimg) Retu
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draw_set_blend_mode(mode) Indicates
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position (x,y) in the surface. This
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change their position, and even sca
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indicated depth to the new depth. W
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window_set_sizeable(sizeable) Sets
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window_default() Gives the window t
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can also assign an instance id to t
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Be careful when using this techniqu
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sound_volume(index,value) Changes t
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wave Waveform of the LFO. (0 = tria
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accordingly. The effect is especial
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MCI_command(str) This functions sen
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e adapted to the scaled size of the
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message_caption(show,str) Sets the
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place (1-10). This can be used to d
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sound_discard(index) Frees the audi
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script_exists(ind) Returns whether
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• Make sure you delete resources
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sprite_add_from_surface(ind,id,x,y,
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does not matter. background_create_
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Scripts an empty path. path_reverse
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ehavior we must define events for t
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oom. room_tile_add(ind,back,left,to
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fa_directory directories fa_archive
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using the file selector. Note that
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To pass certain parameter settings
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All data structures work globally i
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Lists ds_queue_size(id) Returns the
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ds_map_create() Creates a new map.
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Grids an easy mechanism for saving
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ds_grid_get_mean(id,x1,y1,x2,y2) Re
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• ef_smokeup • ef_star • ef_s
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at the beginning of the animation o
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Besides the color you can also give
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front of, or between object instanc
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• distribution indicates the dist
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settings. part_attractor_position(p
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Changers change certain particles w
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part_type_gravity(pt2,0.2,270); par
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mplay_connect_status() returns the
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calling the first routine. This id
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This functionality is only availabl
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ty_real,2,ty_real,ty_real); global.
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• When you use the 3D functionali
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Note that at the moment a new insta
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} ttt = background_get_texture(back
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Default you look along the negative
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A standard use for this is to draw
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{ } d3d_transform_set_identity(); d
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d3d_light_define_direction(ind,dx,d
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pr_trianglefan. d3d_model_vertex(in
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