From c9e358414063f8bc36afa796d781cd64299a80cf Mon Sep 17 00:00:00 2001
From: "Juan J. Martinez" <jjm@usebox.net>
Date: Mon, 10 Feb 2025 16:22:43 +0000
Subject: Controller support

---
 js/game.js | 59 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++--
 1 file changed, 57 insertions(+), 2 deletions(-)

diff --git a/js/game.js b/js/game.js
index f11174b..c2f714a 100644
--- a/js/game.js
+++ b/js/game.js
@@ -55,6 +55,8 @@ class Game {
             b: false
         };
 
+        this.gamepads = {};
+
         this.minFps = 60;
         this.then = -1 / this.minFps;
 
@@ -69,6 +71,25 @@ class Game {
             this.resize();
         };
 
+        window.addEventListener("gamepadconnected", (e) => {
+            console.log(
+                "Gamepad connected at index %d: %s. %d buttons, %d axes.",
+                e.gamepad.index,
+                e.gamepad.id,
+                e.gamepad.buttons.length,
+                e.gamepad.axes.length,
+            );
+            this.gamepads[e.gamepad.index] = e.gamepad;
+        });
+        window.addEventListener("gamepaddisconnected", (e) => {
+            console.log(
+                "Gamepad disconnected from index %d: %s",
+                e.gamepad.index,
+                e.gamepad.id,
+            );
+            delete this.gamepads[e.gamepad.index];
+        });
+
         this.loader();
     }
 
@@ -90,6 +111,40 @@ class Game {
     }
 
     loop(now) {
+
+        Object.keys(this.gamepads).forEach((g) => {
+            const gp = this.gamepads[g];
+
+            this.keys["a"] = gp.buttons[0].pressed;
+            this.keys["b"] = gp.buttons[1].pressed;
+
+            if (gp.buttons[14].pressed) {
+                this.keys["left"] = true;
+                this.keys["right"] = false;
+            } else {
+                if (gp.buttons[15].pressed) {
+                    this.keys["left"] = false;
+                    this.keys["right"] = true;
+                } else {
+                    this.keys["left"] = false;
+                    this.keys["right"] = false;
+                }
+            }
+
+            if (gp.buttons[12].pressed) {
+                this.keys["up"] = true;
+                this.keys["down"] = false;
+            } else {
+                if (gp.buttons[13].pressed) {
+                    this.keys["up"] = false;
+                    this.keys["down"] = true;
+                } else {
+                    this.keys["up"] = false;
+                    this.keys["down"] = false;
+                }
+            }
+        });
+
         let dt = min(1000 / this.minFps, now - this.then);
         this._update(dt/1000);
 
@@ -201,14 +256,14 @@ class Game {
 
     playSnd(playable, loop, clone) {
         if (this.playCount < this.playLimit) {
-            this.playCount += 1;
+            this.playCount++;
 
             if (clone || false) {
                 playable = playable.cloneNode(true)
             }
             playable.onended = (ev) => {
                 playable.onended = null;
-                this.playCount -= 1;
+                this.playCount--;
             };
             playable.loop = loop || false;
             playable.play();
-- 
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