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Add gamepad support #599

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975490e
Add gamepad support
davidspies Jan 8, 2026
376b202
Clarify weird behavior in docs
davidspies Jan 8, 2026
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34 changes: 33 additions & 1 deletion js/gl.js
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Original file line number Diff line number Diff line change
Expand Up @@ -1458,7 +1458,39 @@ var importObject = {
}
animation_frame_timeout = window.requestAnimationFrame(animation);
},
init_webgl
init_webgl,

// Gamepad support (W3C Gamepad API)
// https://w3c.github.io/gamepad/#remapping
// Returns highest occupied gamepad slot + 1 (not count of connected gamepads)
sapp_gamepad_count: function() {
var gamepads = navigator.getGamepads ? navigator.getGamepads() : [];
var count = 0;
for (var i = 0; i < gamepads.length && i < 4; i++) {
if (gamepads[i]) count = i + 1;
}
return count;
},
sapp_gamepad_connected: function(id) {
var gamepads = navigator.getGamepads ? navigator.getGamepads() : [];
if (id < 0 || id >= gamepads.length) return 0;
var gp = gamepads[id];
return (gp && gp.connected) ? 1 : 0;
},
sapp_gamepad_button: function(id, btn) {
var gamepads = navigator.getGamepads ? navigator.getGamepads() : [];
if (id < 0 || id >= gamepads.length) return 0;
var gp = gamepads[id];
if (!gp || !gp.connected || btn < 0 || btn >= gp.buttons.length) return 0;
return gp.buttons[btn].pressed ? 1 : 0;
},
sapp_gamepad_axis: function(id, axis) {
var gamepads = navigator.getGamepads ? navigator.getGamepads() : [];
if (id < 0 || id >= gamepads.length) return 0.0;
var gp = gamepads[id];
if (!gp || !gp.connected || axis < 0 || axis >= gp.axes.length) return 0.0;
return gp.axes[axis];
}
}
};

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14 changes: 14 additions & 0 deletions src/native/wasm.rs
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Expand Up @@ -138,6 +138,20 @@ extern "C" {
pub fn sapp_schedule_update();
pub fn init_webgl(version: i32);
pub fn now() -> f64;

// Gamepad support (W3C Gamepad API)
// https://w3c.github.io/gamepad/#remapping
/// Returns the number of gamepad slots to check (0-4).
/// This is the highest occupied index + 1, not the count of connected gamepads.
pub fn sapp_gamepad_count() -> i32;
/// Returns 1 if gamepad at index is connected, 0 otherwise.
pub fn sapp_gamepad_connected(id: i32) -> i32;
/// Returns 1 if button is pressed, 0 otherwise.
/// Button indices follow W3C standard gamepad mapping.
pub fn sapp_gamepad_button(id: i32, btn: i32) -> i32;
/// Returns axis value (-1.0 to 1.0).
/// Axis indices: 0=LeftX, 1=LeftY, 2=RightX, 3=RightY
pub fn sapp_gamepad_axis(id: i32, axis: i32) -> f32;
}

unsafe fn show_mouse(shown: bool) {
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