added lazor

1 files changed, 131 insertions, 28 deletions

diff --git a/snek.js b/snek.js
index 49d14b3..4e83075 100644
--- a/snek.js
+++ b/snek.js
@@ -10,28 +10,38 @@ let context;
 let mice;
 let explosions;
 
-let drawInterval=20/1000;
+const drawInterval=20/1000;
 
 let micePerSecond=0.3;
+const chargeDepletionRate=200;
 
 let normalMouseSpeed=3;
 let normalMouseSize=1;
 
-let maxNumberOfExplosionParticles=20;
-let minNumberOfExplosionParticles=5;
-let maxParticleSize=50;
-let maxExplosionAge=100;
+const maxNumberOfExplosionParticles=20;
+const minNumberOfExplosionParticles=5;
+const maxParticleSize=50;
+const maxExplosionAge=100;
+
 
 let lastTimeStamp;
 
 let snake = { 
 	'x':window.innerWidth/2,
-	'y':window.innerHeight/2 
+	'y':window.innerHeight/2,
+	'discharging': false,
+	'direction' : 0
+	
 };
 
 let health=10;
+let score=0;
 
 let frameId;
+let snakeLaserId;
+
+let charge=0;
+const chargeTipoffPoint=10;
 
 function draw(timeStamp)
 {
@@ -46,15 +56,27 @@ function draw(timeStamp)
 	canvas.width  = window.innerWidth;
 	canvas.height = window.innerHeight;
 
+	/*the only clear thing here is that I am very bad at geometry*/
 	context.clearRect(0, 0, canvas.width, canvas.height);
 
+
 	drawExplosions(timeElapsed);
 	drawMice(timeElapsed);
 	drawSnake(timeElapsed);
+	drawHealth();
 
 	frameId=window.requestAnimationFrame(draw);
 }
+function drawHealth()
+{
+	context.save();
+	context.font='48px serif';
+	context.fillText(`Health: ${health}`,10,70);
 
+	context.font='48px serif';
+	context.fillText(`Score: ${score}/30`,window.innerWidth-48*10,70);
+	context.restore();
+}
 function createMouse(x,y,direction,speed,size)
 {
 	return { 'x':x, 'y':y, 'direction':direction, 'speed':speed,'size':size ,'tailLag':0, 'animation':0, 'animationCounter':0, 'hitbox':size*90 };
@@ -68,11 +90,13 @@ function main()
 	setInterval(spawnMouse,1000/micePerSecond);
 	setInterval(cleanUpMice,100);
 	setInterval(cleanUpBlood,maxExplosionAge);
+
+	setInterval(depleteCharge,chargeDepletionRate);
 }
 
 function spawnMouse()
 {
-	mice.push(createMouse(5+window.innerWidth*Math.random()*0.9,window.innerHeight+normalMouseSize*90,-Math.PI/2,normalMouseSpeed,normalMouseSize));
+	mice.push(createMouse(5+window.innerWidth*Math.random()*0.9,window.innerHeight+normalMouseSize*90,-Math.PI/2,(normalMouseSpeed*(Math.random()+1)),normalMouseSize*(Math.random()+1)));
 } 
 
 function initialise()
@@ -86,7 +110,6 @@ function initialise()
 	mice.push(createMouse(200,100,1,normalMouseSpeed,normalMouseSize));
 
 	explosions=[];
-
 }
 function cleanUpMice()
 {
@@ -100,11 +123,20 @@ function cleanUpMice()
 			if(health==0)
 			{
 				window.cancelAnimationFrame(frameId);
-				alert("Too many of the filthy rats escaped! Your snake died of despair.");
+				alert(`Too many of the filthy rats escaped! Your snake has died of despair. Your score is ${score}`);
 			}
 		}
 		else if(mice[i].x-mice[i].hitbox<snake.x && mice[i].x+mice[i].hitbox>snake.x && mice[i].y+mice[i].hitbox>snake.y && mice[i].y-mice[i].hitbox<snake.y)
+		{
+			explosions.push( makeExplosion(mice.splice(i,1)[0]));
+			checkScore();
+		}
+		else if(snake.discharging && mouseColidesWithLaserBeam(mice[i]))
+		{
 			explosions.push( makeExplosion(mice.splice(i,1)[0]));
+			checkScore();
+		}
+
 	}
 }
 function cleanUpBlood()
@@ -116,22 +148,48 @@ function cleanUpBlood()
 			explosions.splice(i,1);
 	}
 }
-/*it is clear that I am bad at geometry :P*/
 function drawSnake(timeElapsed)
 {
 	let distance;
+	let distance2;
 	let vx;
 	let vy;
 	let wx;
 	let wy;
 
-	distance=Math.sqrt(Math.pow(window.innerWidth/2-snake.x,2) + Math.pow(window.innerHeight/2-snake.y,2));
+	distance2=Math.sqrt(Math.pow(window.innerWidth/2-snake.x,2) + Math.pow(window.innerHeight/2-snake.y,2))+0.1;
+	wx=((window.innerWidth/2)-snake.x)/distance2;
+
+	gravitate(snake,cursor,true,10000*(timeElapsed/drawInterval),100);
+
+	distance=Math.sqrt(Math.pow(window.innerWidth/2-snake.x,2) + Math.pow(window.innerHeight/2-snake.y,2))+0.1;
 	vx=(window.innerWidth/2-snake.x)/distance;
 	vy=(window.innerHeight/2-snake.y)/distance;
 
-	gravitate(snake,cursor,true,10000*(timeElapsed/drawInterval),100);
+	
+	if(charge>chargeTipoffPoint && snake.discharging==false)
+	{
+		snake.discharging=true;
+		snakeLaserId=setInterval(cleanUpMice,drawInterval);
+	}else if(snake.discharging==true && charge<=0)
+	{
+		snake.discharging=false;
+		clearInterval(snakeLaserId);
+	}
 
+	if(snake.discharging==true)
+	{
+		gravitate(snake,{'x':Math.random()*window.innerWidth,'y':Math.random()*window.innerHeight/4},false,10000*(timeElapsed/drawInterval),1);
+		charge+=Math.abs(Math.asin(wx)-Math.asin(vx))*0.5;
+	}else
+	{
+		charge+=Math.abs(Math.asin(wx)-Math.asin(vx));
+	}
+
+	context.save();
 
+	context.shadowBlur=charge;
+	context.shadowColor="yellow";
 	/*body*/
 	context.beginPath();
 	context.strokeStyle="#00FF00";
@@ -148,27 +206,34 @@ function drawSnake(timeElapsed)
 	context.stroke();
 	context.closePath();
 
-
-	/*head*/
-	distance=Math.sqrt(Math.pow(vx*300,2) + Math.pow(vy*100,2));
-	wx=(vx*300)/distance;
-	wy=(vy*100)/distance;
-
-	context.save();
-
-
 	context.translate(snake.x,snake.y);
+	snake.direction=Math.atan2(vy,vx);
+	context.rotate(Math.PI/2+snake.direction);
+	/*
 	if(wx>0)
 	{
-		context.rotate(Math.PI-Math.acos(wy));
+		snake.direction=Math.acos(wy);
+		context.rotate(Math.PI-snake.direction);
 	}else
 	{
-		context.rotate(Math.PI+Math.acos(wy));
+		snake.direction=Math.acos(wy);
+		context.rotate(Math.PI+snake.direction);
+	}
+	*/
+
+	if(snake.discharging==true)
+	{
+		context.beginPath();
+		context.fillStyle="#FF0000";
+		context.rect(-15,0,30,10000);
+		context.fill();
+		context.closePath();
 	}
 
+	context.strokeStyle="#00FF00";
 	context.beginPath();
-	context.ellipse(0,50,30,70,0,0,3*Math.PI);
 	context.fillStyle = "#00FF00";
+	context.ellipse(0,50,30,70,0,0,3*Math.PI);
 	context.fill();
 	context.stroke();
 	context.closePath();
@@ -244,10 +309,10 @@ function drawMouse(mouse,timeElapsed)
 	mouse.y+=mouse.speed*(timeElapsed/drawInterval)*Math.sin(mouse.direction);
 	mouse.animation+=0.4*(timeElapsed/drawInterval);
 
-	/*
-	mouse.direction+=0.1;
-	if(mouse.direction>1) mouse.direction-=1;
-	*/
+	if(score>=0)
+	{
+		gravitate(mouse,snake,false,(timeElapsed/drawInterval)*500,10);
+	}
 
 	context.save();
 
@@ -355,6 +420,7 @@ function makeExplosion(mouse)
 	let numberOfParticles=Math.floor(Math.random()*(maxNumberOfExplosionParticles-minNumberOfExplosionParticles))+minNumberOfExplosionParticles;
 	let i=0;
 
+	++score;
 	for(i;i<numberOfParticles;++i)
 	{
 		ret.particles.push({ 'x':mouse.x , 'y':mouse.y, 'direction':Math.random()*2*Math.PI, 'size':Math.random() });
@@ -362,3 +428,40 @@ function makeExplosion(mouse)
 
 	return ret;
 }
+function depleteCharge()
+{
+	charge=Math.max(0,charge-1);
+}
+function possiblyDischarge()
+{
+
+}
+function mouseColidesWithLaserBeam(mouse)
+{
+	let vx=(mouse.x-snake.x);
+	let vy=(mouse.y-snake.y);
+	let direction=Math.atan2(vy,vx);
+
+	if(direction<0)
+		direction=Math.PI*2+direction;
+
+	if(Math.abs(direction-Math.PI-snake.direction)<0.1)
+		return true;
+	else
+		return false;
+}
+function checkScore()
+{
+	if(score==20 || score==10 || score==5)
+	{
+		normalMouseSpeed*=2;
+		normalMouseSize*=0.7;
+		setInterval(spawnMouse,1000/micePerSecond);
+	}
+
+	if(score>=30)
+	{
+		window.cancelAnimationFrame(frameId);
+		alert("You are winner!");
+	}
+}