When your game is being targeted at those platforms that permit
multi-touch, you should be using these functions. They work the
same way a PC would work if it had multiple mice attached and the
constants that are being checked for are the same as those used for
the standard mouse functions:
| Constant | Description |
|---|---|
| mb_left | The left mouse button |
| mb_middle | The middle mouse button (this may not be valid for all target platforms) |
| mb_right | The right mouse button |
| mb_none | No mouse button |
| mb_any | Any of the mouse buttons |
NOTE: On touch screen devices, a double tap is returned
as the equivalent of a right mouse button event. So, if you
need to detect multiple taps in quick succession, for example, you
will need to check for both the mb_left and mb_right. This
functionality can be toggled on or off using device_mouse_dbclick_enable.
Below you can find a list of all the device specific control functions:
- device_mouse_check_button
- device_mouse_check_button_pressed
- device_mouse_check_button_released
- device_mouse_dbclick_enable
- device_mouse_x
- device_mouse_y
- device_mouse_raw_x
- device_mouse_raw_y
- device_mouse_x_to_gui
- device_mouse_y_to_gui
- device_is_keypad_open
- device_get_tilt_x
- device_get_tilt_y
- device_get_tilt_z
Please note that on mobile devices (Android, iOS and Windows
Phone), you can use the back button at any time, as it is mapped to
the keyboard backspace which is the GameMaker: Studio
keyboard constant
vk_backspace, so you can do checks for that key and perform
actions on those devices as if the back button had been used.