wasm4fun_input/
gamepad.rs

1// Copyright Claudio Mattera 2022.
2//
3// Distributed under the MIT License or the Apache 2.0 License at your option.
4// See the accompanying files License-MIT.txt and License-Apache-2.0.txt, or
5// online at
6// https://opensource.org/licenses/MIT
7// https://opensource.org/licenses/Apache-2.0
8
9use wasm4fun_core::{
10    BUTTON_1, BUTTON_2, BUTTON_DOWN, BUTTON_LEFT, BUTTON_RIGHT, BUTTON_UP, GAMEPAD1, GAMEPAD2,
11    GAMEPAD3, GAMEPAD4,
12};
13
14/// A gamepad
15///
16/// Gamepads have 6 buttons: X (confirm), Z (cancel), Left, Right, Up and Down.
17/// Multiple buttons can be pressed at the same time.
18pub struct GamePad(u8);
19
20impl GamePad {
21    /// Open a system gamepad
22    ///
23    /// # Panics
24    ///
25    /// This function panic if `index` is larger than 4.
26    pub fn open(index: usize) -> &'static Self {
27        match index {
28            1 => unsafe { &*(GAMEPAD1 as *const Self) },
29            2 => unsafe { &*(GAMEPAD2 as *const Self) },
30            3 => unsafe { &*(GAMEPAD3 as *const Self) },
31            4 => unsafe { &*(GAMEPAD4 as *const Self) },
32            _ => panic!("Invalid gamepad"),
33        }
34    }
35
36    /// Access the X button
37    pub fn x(&self) -> bool {
38        self.0 & BUTTON_1 != 0
39    }
40
41    /// Access the Z button
42    pub fn z(&self) -> bool {
43        self.0 & BUTTON_2 != 0
44    }
45
46    /// Access the D-pad Left button
47    pub fn left(&self) -> bool {
48        self.0 & BUTTON_LEFT != 0
49    }
50
51    /// Access the D-pad Right button
52    pub fn right(&self) -> bool {
53        self.0 & BUTTON_RIGHT != 0
54    }
55
56    /// Access the D-pad Up button
57    pub fn up(&self) -> bool {
58        self.0 & BUTTON_UP != 0
59    }
60
61    /// Access the D-pad Down button
62    pub fn down(&self) -> bool {
63        self.0 & BUTTON_DOWN != 0
64    }
65}
wasm4fun_input/gamepad.rs

wasm4fun_input/
gamepad.rs
