little canopy
Hi all, another basic question. I'm trying to import a Struct from another file, and access the member methods to run a simple game loop.
At the moment this is an empty struct, but it doesn't seem to be importing, and any attempt at interacting with the struct instance results in an error.
What syntax am I missing?
main.zig and game.zig code screenshots attached.
languid elm
First question, did you write the file? Second, I feel like Game.isRunning should be a field, not a static variable.
Third, missing one screenshot
little canopy
I did write the file. Sorry let me attach the screenshot for main.zig
languid elm
No problem :)
little canopy
ashen aspen
Please post code as text, not images. Format as code with triple back tick lines.
runic linden
amber oasis
functions only become methods when the first argument is the container type
frigid patrol
you need to have a self parameter:
pub const Game = struct {
const Self = @This();
pub fn getInput(self: Self) void {}
...
};```You have a Game struct in the game.zig file
languid elm
Okay, you'd want isRunning to be a field, not a static, and the three functions should take a *Game
runic linden
Also, Zig files are implicitly structs. You don't NEED to write it in this specific way
little canopy
you need to have a self parameter:
```rust
pub const Game = struct {
const Se...
one question on this point - the Ziglings examples for structs and methods don't have the Self = @This(); - is there something I'm doing differently that requires this? (or happy to be pointed to the documentation as well)
little canopy
Please post code as text, not images. Format as code with triple back tick lines...
will do in future!
frigid patrol
it's something I do personally
you could just have Game instead of Self
and ofc make it a pointer (only if) you need to mutate it
languid elm
I.e.
pub const Game = struct {
is_running: bool = true,
pub fn getInput(game: *Game) void {
_ = game; // Supress unused error
}
pub fn update(game: *Game) void {
_ = game; // Supress unused error
}
// Const pointer because you don't mutate while rendering
pub fn render(game: *const Game) void {
_ = game; // Supress unused error
}
}
It's your own choice on whether to use @This or the struct's name
little canopy
ty all, really appreciate the help!