added touchscreen support

levels/arcade-survival.json

@@ -8,9 +8,11 @@
 		[16, 10]
 	],
 	"rules": {
+		"worldWrap": false,
 		"autoSpeedIncrease": true,
 		"autoSpeadIncreaseTicks": 10,
 		"autoSizeGrow": true,
-		"autoSizeGrowTicks": 100
+		"autoSizeGrowTicks": 100,
+		"scoreSystem": "survival"
 	}
 }

levels/arcade-timed.json

@@ -0,0 +1,17 @@
+{
+	"dimensions": [32, 32],
+	"delay": 100,
+	"food": [
+		[16, 5]
+	],
+	"snake": [
+		[16, 12],
+		[16, 11],
+		[16, 10]
+	],
+	"rules": {
+		"speedMultiplier": 0.8,
+		"gameDuration": 30000,
+		"winCondition": "time"
+	}
+}

src/js/main.js

@@ -108,4 +108,16 @@
 		else if(e.key=='ArrowRight') inputs.right=true;
 	});
 
+	window.addEventListener('touchstart', e => {
+		let x=e.touches[0].clientX/window.innerWidth-.5;
+		let y=e.touches[0].clientY/window.innerHeight-.5;
+		const angle=((Math.atan2(x, y)+2*Math.PI)%(2*Math.PI))/Math.PI;
+
+		let inputs=currentInputs;
+		if(angle>.25 && angle <.75) inputs.right=true;
+		else if(angle>.75 && angle<1.25) inputs.up=true;
+		else if(angle>1.25 && angle<1.75) inputs.left=true;
+		else inputs.down=true;
+	});
+
 })();

src/js/snek.js

@@ -82,7 +82,9 @@ class SnekGame {
 			worldWrap: true,
 			winCondition: 'none',
 			scoreSystem: 'fruit',
-			netPlay: false
+			netPlay: false,
+			autoSizeGrow: false,
+			autoSpeedIncrease: false
 		}, rules, settings.rules || {});
 	}
 
@@ -305,6 +307,17 @@ class SnekGame {
 				return true;
 			}
 		}
+
+		Object
+			.keys(inputs)
+			.forEach(k => {
+				let v=inputs[k];
+				if(v===true) v=5;
+				v--;
+				if(!v) delete inputs[k];
+				else inputs[k]=v;
+			});
+
 		if(inputs.left && trySet([-1, 0])) return delete inputs.left;
 		else if(inputs.right && trySet([ 1, 0])) return delete inputs.right;
 		else if(inputs.up && trySet([ 0,-1])) return delete inputs.up;