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move gamepad handling into a separate class

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This commit is contained in:
Colin McMillen 2019-09-25 17:22:04 -04:00
parent c0cd1e6df3
commit 528d9577eb
1 changed files with 48 additions and 34 deletions
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82
main.js
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@ -17,6 +17,10 @@ function bound(low, x, high) {
// standard SNES buttons.)
class SnesInput {
constructor() {
this.reset();
}
reset() {
this.up = false;
this.down = false;
this.left = false;
@ -95,12 +99,39 @@ class SnesInput {
}
}
class SnesGamepad {
update(input) {
const gamepads = navigator.getGamepads();
if (gamepads.length < 1 || !gamepads[0] || !gamepads[0].connected) {
input.reset();
return;
}
this.wasConnected = true;
// TODO: have a config screen instead of hard-coding the 8Bitdo SNES30 pad.
const gamepad = gamepads[0];
input.up = gamepad.axes[1] < 0;
input.down = gamepad.axes[1] > 0;
input.left = gamepad.axes[0] < 0;
input.right = gamepad.axes[0] > 0;
input.a = gamepad.buttons[0].pressed;
input.b = gamepad.buttons[1].pressed;
input.x = gamepad.buttons[3].pressed;
input.y = gamepad.buttons[4].pressed;
input.l = gamepad.buttons[6].pressed;
input.r = gamepad.buttons[7].pressed;
input.select = gamepad.buttons[10].pressed;
input.start = gamepad.buttons[11].pressed;
}
}
class InputHandler {
constructor() {
this.keysPressed = {};
window.addEventListener('gamepadconnected', this.gamepadConnected);
window.addEventListener('gamepaddisconnected', this.gamepadDisconnected);
this.gamepad = new SnesGamepad();
window.addEventListener(
'gamepadconnected', (e) => this.gamepadConnected(e));
window.addEventListener(
'gamepaddisconnected', (e) => this.gamepadDisconnected(e));
document.addEventListener('keydown', (e) => this.keyDown(e));
document.addEventListener('keyup', (e) => this.keyUp(e));
}
@ -114,40 +145,23 @@ class InputHandler {
}
update(input) {
this.gamepad.update(input);
// Default ZSNES keybindings. See:
// http://zsnes-docs.sourceforge.net/html/readme.htm#default_keys
input.up = this.keysPressed['ArrowUp'];
input.down = this.keysPressed['ArrowDown'];
input.left = this.keysPressed['ArrowLeft'];
input.right = this.keysPressed['ArrowRight'];
input.start = this.keysPressed['Enter'];
input.select = this.keysPressed['Shift'];
input.a = this.keysPressed['x'];
input.b = this.keysPressed['z'];
input.x = this.keysPressed['s'];
input.y = this.keysPressed['a'];
input.l = this.keysPressed['d'];
input.r = this.keysPressed['c'];
input.up |= this.keysPressed['ArrowUp'];
input.down |= this.keysPressed['ArrowDown'];
input.left |= this.keysPressed['ArrowLeft'];
input.right |= this.keysPressed['ArrowRight'];
input.start |= this.keysPressed['Enter'];
input.select |= this.keysPressed['Shift'];
input.a |= this.keysPressed['x'];
input.b |= this.keysPressed['z'];
input.x |= this.keysPressed['s'];
input.y |= this.keysPressed['a'];
input.l |= this.keysPressed['d'];
input.r |= this.keysPressed['c'];
const gamepad = navigator.getGamepads()[0];
if (gamepad == null || !gamepad.connected || gamepad.axes.length < 2 ||
gamepad.buttons.length < 12) {
return;
}
// TODO: have a config screen instead of hard-coding the 8Bitdo SNES30 pad.
// TODO: handle connects / disconnects more correctly.
input.up |= gamepad.axes[1] < 0;
input.down |= gamepad.axes[1] > 0;
input.left |= gamepad.axes[0] < 0;
input.right |= gamepad.axes[0] > 0;
input.a |= gamepad.buttons[0].pressed;
input.b |= gamepad.buttons[1].pressed;
input.x |= gamepad.buttons[3].pressed;
input.y |= gamepad.buttons[4].pressed;
input.l |= gamepad.buttons[6].pressed;
input.r |= gamepad.buttons[7].pressed;
input.select |= gamepad.buttons[10].pressed;
input.start |= gamepad.buttons[11].pressed;
debug(input.toString());
}