Designing Games with Game Maker - YoYo Games

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There are some additional functions related to keyboard interaction. keyboard_clear(key) Clears the state of the key. This means that it will no longer generate keyboard events until it starts repeating. io_clear() Clears all keyboard and mouse states. io_handle() Handle user io, updating keyboard and mouse status. keyboard_wait() Waits till the user presses a key on the keyboard. The mouse For mouse interaction, the following variables and functions exist: mouse_x* X-coordinate of the mouse in the room. Cannot be changed. mouse_y* Y-coordinate of the mouse in the room. Cannot be changed. mouse_button Currently pressed mouse button. As value use mb_none, mb_any, mb_left, mb_middle, or mb_right. mouse_lastbutton Last pressed mouse button. To check whether a particular mouse button is pressed you can use the following functions. This is in particular useful when multiple keys are pressed simultaneously. mouse_check_button(numb) Returns whether the mouse button is currently down (use as values mb_none, mb_left, mb_middle, or mb_right). mouse_check_button_pressed(numb) Returns whether the mouse button was pressed since the last step. mouse_check_button_released(numb) Returns whether the mouse button was released since the last step. There are some additional functions related to mouse interaction. mouse_clear(button) Clears the state of the mouse button. This means that it will no longer generate mouse events until the player releases it and presses it again. io_clear() Clears all keyboard and mouse states. io_handle() Handle user io, updating keyboard and mouse status. mouse_wait() Waits till the user presses a mouse button .
You can change the way the mouse cursor looks like. You can choose any sprite for this. To this end you can use the following variable: cursor_sprite Indicates the sprite that is used to represent the cursor (default no sprite is used, represented by a value of -1). You can assign one of the sprites to this variable to have it been drawn automatically at the position of the mouse cursor. (You can also switch off the windows mouse cursor in the Global Game Settings.) The joystick There are some events associated with joysticks. But to have full control over the joysticks there is a whole set of functions to deal with joysticks. Game Maker supports up to two joysticks. So all of these functions take a joystick id as argument. joystick_exists(id) Returns whether joystick id (1 or 2) exists. joystick_name(id) Returns the name of the joystick joystick_axes(id) Returns the number of axes of the joystick. joystick_buttons(id) Returns the number of buttons of the joystick. joystick_has_pov(id) Returns whether the joystick has point-of-view capabilities. joystick_direction(id) Returns the keycode (vk_numpad1 to vk_numpad9) corresponding to the direction of joystick id (1 or 2). joystick_check_button(id,numb) Returns whether the joystick button is pressed (numb in the range 1-32). joystick_xpos(id) Returns the position (-1 to 1) of the x-axis of joystick id. joystick_ypos(id) Returns the joysticks y-position. joystick_zpos(id) Returns the joysticks z-position (if it has a z-axis). joystick_rpos(id) Returns the joysticks rudder position (or fourth axis). joystick_upos(id) Returns the joysticks u-position (or fifth axis). joystick_vpos(id) Returns the joysticks v-position (or sixth axis). joystick_pov(id) Returns the joysticks point-of view position. This is an angle between 0 and 360 degrees. 0 is forwards, 90 to the right, 180 backwards and 270 to the left. When no point-of-view direction is pressed by the user -1 is returned.
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What is New Designing Games with Ga
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It can now be indicated whether or
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• You can now set the variable cu
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Playing computer games is fun. But
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Upgrading to the Pro Edition Game M
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http://www.yoyogames.com/upgrade He
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simple: There is a blue ball bounci
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(Actually, this is what you see whe
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Resources menu In this menu, you ca
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When you make a game you normally s
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To create a background resource in
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whether this is a solid object (lik
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Here you select the event you want
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the keys pressed happen. Note that
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Key release events This event is si
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Relative. If you check this, the ne
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object is reached. If there already
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Transform Sprite Use this action to
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Sleep With this action you can free
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Check Collision This is the reverse
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peferably only for small pieces of
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provide the positions and the capti
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to right. You specify the rectangle
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You can change most of these variab
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To add instances to the room, first
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At the top you will see the backgro
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When you start Game Maker in advanc
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• Show the origin and bounding bo
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Editing your sprites Up to now we l
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• Scale. This command scales the
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• Disappear. Makes the image disa
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Once you selected the correct set o
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• Clear. Clear the image to the l
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Multiple normal sounds can play at
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You can indicate a number of settin
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When a ball hits the floor it must
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action it lets the instance take a
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The following additional draw actio
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dies. The transparency slowly chang
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Resume CD Resumes a paused CD. Chec
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e the way you left it the last time
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At the left top there is the curren
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At the top there is a box labeled E
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Letters range that contains all upp
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top tool bar. Here you can also ind
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You might wonder what happens when
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Set the time line position With thi
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As you might have noticed, parts of
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In this form you can indicate which
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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
Page 107 and 108: Here you can set a number of option
Page 109 and 110: Game Maker contains a built-in prog
Page 111 and 112: • !: not, turns true into false a
Page 113 and 114: } instance_create(xx,yy,ball); Addr
Page 115 and 116: } obj[1].id.x = 12; The last statem
Page 117 and 118: { } repeat (5) instance_create(rand
Page 119 and 120: } for (i=0; i
Page 121 and 122: A function has the form of a functi
Page 123 and 124: with (ball) { } x = random(room_wid
Page 125 and 126: andom_set_seed(seed) Sets the seed
Page 127 and 128: string_copy(str,index,count) Return
Page 129 and 130: date_get_hour(date) Returns the hou
Page 131 and 132: Generating Events Miscellaneous Var
Page 133 and 134: Paths move_bounce_all(adv) Bounces
Page 135 and 136: e careful how and when you apply it
Page 137 and 138: overwritten by the new path. (See a
Page 139 and 140: mp_grid_add_instances(id,obj,prec)
Page 141 and 142: instance_count* Number of instances
Page 143 and 144: When you deactivate instances they
Page 145 and 146: As you should know, every instance
Page 147 and 148: loading. You can also save and load
Page 149 and 150: score The current score. lives Numb
Page 151 and 152: ev_joystick1_button7 ev_joystick1_b
Page 153 and 154: Here are some variables and functio
Page 155 and 156: There is no game without interactio
Page 157: vk_insert insert key vk_pageup page
Page 161 and 162: image_index When the image has mult
Page 163 and 164: ackground_height[0...7]* Height of
Page 165 and 166: ,xscale,yscale,rot,c1,c2,c3,c4,alph
Page 167 and 168: ection,showback,showborder) With th
Page 169 and 170: Fonts and text In games you sometim
Page 171 and 172: This functionality is only availabl
Page 173 and 174: sprite_get_texture(spr,subimg) Retu
Page 175 and 176: draw_set_blend_mode(mode) Indicates
Page 177 and 178: position (x,y) in the surface. This
Page 179 and 180: change their position, and even sca
Page 181 and 182: indicated depth to the new depth. W
Page 183 and 184: window_set_sizeable(sizeable) Sets
Page 185 and 186: window_default() Gives the window t
Page 187 and 188: can also assign an instance id to t
Page 189 and 190: Be careful when using this techniqu
Page 191 and 192: sound_volume(index,value) Changes t
Page 193 and 194: wave Waveform of the LFO. (0 = tria
Page 195 and 196: accordingly. The effect is especial
Page 197 and 198: MCI_command(str) This functions sen
Page 199 and 200: e adapted to the scaled size of the
Page 201 and 202: message_caption(show,str) Sets the
Page 203 and 204: place (1-10). This can be used to d
Page 205 and 206: sound_discard(index) Frees the audi
Page 207 and 208: 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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