A simple approach
A simple approach
Embedded Files
Saving means writing important information from the game to a file (Such as player position and health)
Saving means writing important information from the game to a file (Such as player position and health)
Loading means restoring that information into the game
Loading means restoring that information into the game
Add Save and Load buttons to your level
Add Save and Load buttons to your level
There is a button node
There is a button node
which can be added
which can be added
then change the text property
then change the text property
Save and Load Utility Node
Save and Load Utility Node
Create a new scene with Node as the root
Create a new scene with Node as the root
Rename it to SaveAndLoad
Rename it to SaveAndLoad
Attach a Script to the node
Attach a Script to the node
Create a function to save the game
Create a function to save the game
Create a function to load the game
Create a function to load the game
Add the SaveAndLoad scene to your level scene
Add the SaveAndLoad scene to your level scene
Connect the pressed function of the SaveButton
Connect the pressed function of the SaveButton
To the save_game() function
To the save_game() function
Of the SaveAndLoad Node
Of the SaveAndLoad Node
Using the Pick button to
Using the Pick button to
Select the save_game() function
Select the save_game() function
Connect the pressed function of the LoadButton
Connect the pressed function of the LoadButton
To the load_game_function()
To the load_game_function()
To save to a file we need a new file
To save to a file we need a new file
Opened in Write mode
Opened in Write mode
Note that: user:// is is a folder that is always writable
Note that: user:// is is a folder that is always writable
SAVING
SAVING
Now that we have a file to store data
Now that we have a file to store data
Let's try storing the position of the Player
Let's try storing the position of the Player
Since a game usually only has one player, we can make the node name reference unique
Since a game usually only has one player, we can make the node name reference unique
Add reference variables for the player
Add reference variables for the player
by holding CTRL and dragging the node into the code
by holding CTRL and dragging the node into the code
Use the store_var function of file
Use the store_var function of file
to store the global position of the player
to store the global position of the player
then close the file
then close the file
LOADING
LOADING
Open the file you want to load
Open the file you want to load
Set it to READ mode
Set it to READ mode
Use the get_var function
Use the get_var function
to retrieve the position
to retrieve the position
close the file
close the file
For a very simple game or only saving one variable such as a high score this simple approach works just fine!
For a very simple game or only saving one variable such as a high score this simple approach works just fine!
Important note: If you want to store more than one value such as player position and player health etc.
Important note: If you want to store more than one value such as player position and player health etc.
The variables must be saved and loaded in the same order!
The variables must be saved and loaded in the same order!
The main issue with this approach is that we cannot save dynamically created objects
The main issue with this approach is that we cannot save dynamically created objects
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