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# Events (core.events)
The **Events** component makes tracking changes in your application/game easier.

## Signals
### window_title
- emitted on `window title change`
- argument `window_title` (type `String`)
- argument `previous_window_title` (type `String`)
### window_size
- emitted on `window size change`
- argument `update_coordinate` (type `String`, can be `X`, `Y` or `BOTH`)
- argument `window_size` (type `Vector2i`)
- argument `previous_window_size` (type `Vector2i`)
### window_pos
- emitted on `window position change`
- argument `update_coordinate` (type `String`, can be `X`, `Y` or `BOTH`)
- argument `window_pos` (type `Vector2i`)
- argument `previous_window_pos` (type `Vector2i`)
### logger_all
- emitted on `log output`
- argument `type` (type `String`, can be `"DIAG"`, `"INFO"`, `"WARN"` or `"ERROR"`)
- argument `script` (type `String`)
- argument `message` (type `String`)
### logger_diag
- emitted on `diagnostic log output`
- argument `script` (type `String`)
- argument `message` (type `String`)
### logger_info
- emitted on `informational log output`
- argument `script` (type `String`)
- argument `message` (type `String`)
### logger_warn
- emitted on `warning log output`
- argument `script` (type `String`)
- argument `message` (type `String`)
### logger_error
- emitted on `error log output`
- argument `script` (type `String`)
- argument `message` (type `String`)

## Internal variables
### window_title_prev
- type `String`
- default value `""`
- description `The previous title.`
### window_size_x_prev
- type `int`
- default value `0`
- description `The previous window size (x coordinate)`
### window_size_y_prev
- type `int`
- default value `0`
- description `The previous window size (y coordinate)`
### window_pos_x_prev
- type `int`
- default value `0`
- description `The previous window position (x coordinate)`
### window_pos_y_prev
- type `int`
- default value `0`
- description `The previous window position (y coordinate)`

## Internal functions
### _ready()
- returns `void`
- description `connects the logger's "logevent" signal with the "logger_update()" function`
### _process()
- returns `void`
- description `checks for window title, size and position changes and emits a signal if one changes`
  - argument `_delta`
    - type `float`
    - mandatory `yes`
    - description `The delta value passed by the engine`
### logger_update()
- returns `void`
- description `emits "logger_all" signal and checks against type and sends the corresponding "logger_<TYPE>" signal`
  - argument `type`
    - type `String`
    - mandatory `yes`
    - description `The log type`
  - argument `script`
    - type `String`
    - mandatory `yes`
    - description `The script responsible for the log output`
  - argument `message`
    - type `String`
    - mandatory `yes`
    - description `The log message`
  - argument `_logmessage`
    - type `String`
    - mandatory `yes`
    - description `The printed (processed) log message`