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index.html
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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Space Game</title>
<style>
body {
margin: 0;
text-align: center;
background-color: steelblue;
font-family: monaco;
cursor: default;
}
canvas {
position: absolute;
border: 0;
left: 0;
top: 0;
}
#version {
color: white;
font-size: small;
position: absolute;
bottom: 0;
margin-left: 10px;
}
</style>
</head>
<body>
<canvas id="background"></canvas>
<canvas id="middleground"></canvas>
<canvas id="foreground"></canvas>
<canvas id="playerCamera"></canvas>
<canvas id="userInterface"></canvas>
<canvas id="minimap"></canvas>
<p id="version">Alpha v0.1.0</p>
<script src="settings.js"></script>
<script src="player.js"></script>
<script src="commonMethods.js"></script>
<script src="text.js"></script>
<script src="background.js"></script>
<script src="rocks.js"></script>
<script src="input.js"></script>
<script src="movement.js"></script>
<script src="collision.js"></script>
<script src="enemies.js"></script>
<script src="userInterface.js"></script>
<script>
console.log(document.scripts)
const HTML_CANVAS = document.getElementsByTagName("canvas"); // An array of HTML Canvas Elements
var canvas = { // An object of Canvas Contexts (Remember to write by HTML order)
background: null,
middleground: null,
foreground: null,
playerCamera: null,
userInterface: null,
minimap: null
}
function assignCanvases ()
{
let index = 0;
for (const key in canvas) {
if (canvas.hasOwnProperty(key)) {
canvas[key] = HTML_CANVAS[index].getContext("2d");
index++;
console.log(`canvas.${key}: ${canvas[key]}`);
}
}
}
function scaleCanvases ()
{
for (let i = 0; i < HTML_CANVAS.length; i++)
{
if (i == 5)
{
HTML_CANVAS[i].width = MAP_MINIMAP_SIZE;
HTML_CANVAS[i].height = MAP_MINIMAP_SIZE;
HTML_CANVAS[i].style.top = 20 * SCALE + "px";
HTML_CANVAS[i].style.left = SCREEN_WIDTH - MAP_MINIMAP_SIZE - 20*SCALE + "px";
}
else
{
HTML_CANVAS[i].width = SCREEN_WIDTH;
HTML_CANVAS[i].height = SCREEN_HEIGHT;
}
}
}
assignCanvases();
scaleCanvases();
var missions = [
{name: "Collect fuel", completed: 0, goal: 15},
{name: "Kill enemies", completed: 0, goal: 3},
{name: "Visit planets", completed: 0, goal: 3}
]
/*collectFuel: [0, 15],
collectUpgrades: [0, 2],
killEnemies: [0, 3]
}*/
var images = {
ship: "images/ship.png",
nebula1: "images/nebula1.png",
nebula2: "images/nebula2.png",
stars1: "images/stars1.png",
enemy: "images/enemy.png",
boost: "images/boost3.png"
};
function getImages()
{
for (const key in images) {
if (images.hasOwnProperty(key)) {
src = images[key];
images[key] = new Image();
images[key].src = src;
console.log(`images.${key}: ${images[key].src}`);
}
}
}
getImages();
var sounds = {
ship: "sounds/ship.mp3",
pickup: "sounds/pickup.mp3"
};
function getSounds()
{
for (const key in sounds) {
if (sounds.hasOwnProperty(key)) {
src = sounds[key];
sounds[key] = new Audio();
sounds[key].src = src;
console.log(`sounds.${key}: ${sounds[key].src}`);
}
}
}
getSounds();
/*
class Nebula {constructor(image, xPos, yPos, width, height, z)
{
this.image = image;
this.xPos = xPos;
this.yPos = yPos;
this.width = width;
this.height = height;
this.z = z;
}}
let nebulaArray = new Array();
let nebulaCount = 0;
while (nebulaCount < 100)
{
nebulaCount++;
// Needs change
let z = 0.25;
let image = images.nebula1;
if (nebulaCount >= 50) {image = images.nebula2; z = 0.5;}
if (nebulaCount >= 75) {image = images.stars1; z = 1;}
nebulaArray.push(new Nebula(image, (Math.random()*MAP_SIZE-(MAP_SIZE/2))-MAP_LEFT, (Math.random()*MAP_SIZE-(MAP_SIZE/2))-MAP_TOP, 2000, 2000, z));
}
*/
/*
class Rock {constructor(xPos, yPos, rad, collision, color, interacted)
{
this.xPos = xPos;
this.yPos = yPos;
this.rad = rad;
this.collision = collision;
this.color = color;
this.interacted = interacted;
}}
let rockArray = new Array();
let rockCount = 0;
let rockRemove = new Array();
while (rockCount < 50)
{
rockCount++;
interacted = true;
color = "gray";
if (rockCount == 49) {color = "tan"; interacted = false}
if (rockCount == 50) {color = "green"; interacted = false}
rockArray.push(new Rock(Math.random()*MAP_SIZE, Math.random()*MAP_SIZE, Math.random()*100+50, false, color, interacted))
}
*/
class Boost {constructor(xPos, yPos)
{
this.xPos = xPos;
this.yPos = yPos;
}}
let boostArray = new Array();
let boostCount = 0;
class Laser {constructor(xPos, yPos, rotation, speed, distance)
{
this.xPos = xPos;
this.yPos = yPos;
this.rotation = rotation;
this.speed = speed;
this.distance = distance;
}}
let laserArray = new Array();
let laserCount = 0;
let sections = MAP_SIZE/10;
var lasersAreFiring = false; // bruh
function updateScreen ()
{
// might be a problem as i only update the visible screen
canvas.background.clearRect(0, 0, SCREEN_WIDTH, SCREEN_HEIGHT);
canvas.background.save();
canvas.middleground.clearRect(0, 0, SCREEN_WIDTH, SCREEN_HEIGHT);
canvas.foreground.clearRect(0, 0, SCREEN_WIDTH, SCREEN_HEIGHT);
canvas.playerCamera.clearRect(0, 0, SCREEN_WIDTH, SCREEN_HEIGHT);
canvas.userInterface.clearRect(0, 0, SCREEN_WIDTH, SCREEN_HEIGHT);
canvas.minimap.clearRect(0, 0, MAP_MINIMAP_SIZE, MAP_MINIMAP_SIZE);
// if (Math.round(ship.rotation)%360 == 0) {} // Use to find rotation direction
detectMovement();
//canvas.foreground.fillRect(MAP_LEFT+ship.xPos-25, MAP_TOP+ship.yPos-25, 50, 50);
canvas.minimap.fillStyle = "black";
canvas.minimap.fillRect(0, 0, 200, 200);
//canvas.background.translate(MAP_LEFT+MAP_SIZE/2, MAP_TOP+MAP_SIZE/2)
//canvas.background.translate(SCREEN_MIDDLE.x+(ship.width/2), SCREEN_MIDDLE.y+(ship.height/2));
canvas.playerCamera.translate(SCREEN_WIDTH/2, SCREEN_HEIGHT/2)
canvas.playerCamera.rotate(-ship.rotationSpeed * Math.PI / 180); // ship.rotation if background
canvas.playerCamera.translate(-SCREEN_WIDTH/2, -SCREEN_HEIGHT/2)
//canvas.background.translate(-SCREEN_MIDDLE.x-(ship.width/2), -SCREEN_MIDDLE.y-(ship.height/2));
//canvas.background.translate(-(MAP_LEFT+MAP_SIZE/2), -(MAP_TOP+MAP_SIZE/2))
//canvas.background.translate(MAP_LEFT+MAP_SIZE/2, MAP_TOP+MAP_SIZE/2)
//canvas.background.translate(-(MAP_LEFT+MAP_SIZE/2), -(MAP_TOP+MAP_SIZE/2))
//canvas.background.fillRect(MAP_LEFT+ship.xPos, MAP_TOP+ship.yPos, MAP_SIZE, MAP_SIZE);
if (gridView)
{
for (let i = 0; i <= MAP_SIZE/sections; i++)
{
// vertical
canvas.foreground.strokeStyle = "red";
canvas.foreground.beginPath(); // Start a new path
canvas.foreground.moveTo(i*sections+MAP_LEFT+ship.xPos, 0+MAP_TOP+ship.yPos); // Move the pen to (30, 50)
canvas.foreground.lineTo(i*sections+MAP_LEFT+ship.xPos, MAP_SIZE+MAP_TOP+ship.yPos); // Draw a line to (150, 100)
canvas.foreground.stroke(); // Render the path
canvas.minimap.strokeStyle = "red";
canvas.minimap.beginPath(); // Start a new path
canvas.minimap.moveTo(i*sections/75, 0); // Move the pen to (30, 50)
canvas.minimap.lineTo(i*sections/75, 200); // Draw a line to (150, 100)
canvas.minimap.stroke(); // Render the path
}
for (let i = 0; i <= MAP_SIZE/sections; i++)
{
// horizontal
canvas.foreground.strokeStyle = "red";
canvas.foreground.beginPath(); // Start a new path
canvas.foreground.moveTo(MAP_LEFT+ship.xPos, i*sections+MAP_TOP+ship.yPos); // Move the pen to (30, 50)
canvas.foreground.lineTo(MAP_SIZE+MAP_LEFT+ship.xPos, i*sections+MAP_TOP+ship.yPos); // Draw a line to (150, 100)
canvas.foreground.stroke(); // Render the path
canvas.minimap.strokeStyle = "red";
canvas.minimap.beginPath(); // Start a new path
canvas.minimap.moveTo(0, i*sections/75); // Move the pen to (30, 50)
canvas.minimap.lineTo(200, i*sections/75); // Draw a line to (150, 100)
canvas.minimap.stroke(); // Render the path
}
}
drawBackground();
handleBodies();
/*
rockArray.forEach(function(object, index)
{
canvas.foreground.globalAlpha = 1;
canvas.foreground.fillStyle = object.color;
canvas.foreground.beginPath();
canvas.foreground.arc(object.xPos+MAP_LEFT+ship.xPos, object.yPos+MAP_TOP+ship.yPos, object.rad, 0, 2 * Math.PI);
canvas.foreground.fill();
canvas.minimap.fillStyle = object.color;
canvas.minimap.beginPath();
canvas.minimap.arc(object.xPos/75, object.yPos/75, object.rad/75*6, 0, 2 * Math.PI);
canvas.minimap.fill();
// hitbox of ship when hitting things
/*
canvas.foreground.fillStyle = "white";
canvas.foreground.beginPath();
canvas.foreground.arc(SCREEN_MIDDLE.x+ship.width/2, SCREEN_MIDDLE.y+ship.width/2, ship.width/2 * collisionRange, 0, 2 * Math.PI);
canvas.foreground.fill();
*/
// EXPERIMENTAL
/*
rockArray.forEach(function(obj, i)
{
if (object !== obj) { // Ensure we're not comparing the same rock to itself
var disX = object.xPos - obj.xPos;
var disY = object.yPos - obj.yPos;
var dis = Math.sqrt(disX * disX + disY * disY);
// Calculate combined "mass" based on radii
var combinedMass = object.rad * obj.rad;
const thresholdDistance = 10000; // Adjust this value based on your requirements
// Check if rocks are close enough for gravity to take effect
if (dis < thresholdDistance) {
displayX = object.xPos+MAP_LEFT+ship.xPos;
displayY = object.yPos + MAP_TOP+ship.yPos;
let angleToAnotherRock = Math.atan2(disY, disX);
// Apply gravitational force
let time = 1;
let gravity = combinedMass / (dis * dis); // Adjust the factor according to your requirements
if (dis < Math.max(object.rad, obj.rad)) {
// Merge the rocks together or apply some other action
if (object.rad > obj.rad)
{
rockRemove.push(i)
object.rad += obj.rad / 2;
}
else if (object.rad < obj.rad)
{
rockRemove.push(index)
obj.rad += object.rad / 2;
}
}
else
{
// Apply gravitational force to the current rock (object)
object.xPos -= gravity*time * Math.cos(angleToAnotherRock);
object.yPos -= gravity*time * Math.sin(angleToAnotherRock);
}
// Optionally, you can visualize or debug here
let forceX = Math.min(gravity * 5000, 100) * Math.cos(angleToAnotherRock);
let forceY = Math.min(gravity * 5000, 100) * Math.sin(angleToAnotherRock);
canvas.foreground.beginPath();
canvas.foreground.moveTo(MAP_LEFT+object.xPos+ship.xPos, MAP_TOP+object.yPos+ship.yPos);
canvas.foreground.lineTo(MAP_LEFT+object.xPos+ship.xPos - forceX, MAP_TOP+object.yPos+ship.yPos - forceY);
canvas.foreground.strokeStyle = "rgba(255, 0, 0, 0.5)"; // Red with some transparency
canvas.foreground.lineWidth = 2;
canvas.foreground.stroke();
}
}
for (let i = 0; i < rockRemove.length; i++)
{
rockArray.splice(rockRemove[i], 1);
rockRemove.splice(i, 1);
rockCount--;
console.log(rockCount)
}
});*/
// gravity
/*
if (detectCircularCollision(object, object.rad/100*10))
{
// Get distance
var distanceX = (object.xPos + MAP_LEFT+ship.xPos) - (SCREEN_MIDDLE.x + ship.width / 2);
var distanceY = (object.yPos + MAP_TOP+ship.yPos) - (SCREEN_MIDDLE.y + ship.height / 2);
var distance = Math.sqrt(distanceX * distanceX + distanceY * distanceY);
// Calculate vectors from ship to rock
let rockToShipVector = {
x: (MAP_LEFT + object.xPos + ship.xPos) - SCREEN_MIDDLE.x - ship.width / 2,
y: (MAP_TOP + object.yPos + ship.yPos) - SCREEN_MIDDLE.y - ship.height / 2
};
// Calculate the angle between ship and rock
let angleToRock = Math.atan2(rockToShipVector.y, rockToShipVector.x);
// Move the ship towards the rock
if (distance < object.rad)
{gravity = object.rad / object.rad * 2.5}
else
{
gravity = object.rad / distance * 2.5;
}
ship.xPos -= gravity * Math.cos(angleToRock);
ship.yPos -= gravity * Math.sin(angleToRock);
}
*/
/*
// COLLISION SHIP
if (object.color != "gray")
{
if (detectCircularCollision(object, pickupRange))
{
displayX = object.xPos+MAP_LEFT+ship.xPos;
displayY = object.yPos + MAP_TOP+ship.yPos;
if (interact && !object.interacted)
{
object.interacted = true;
ship.boostCapacity += 100;
mission.collectUpgrades[0]++;
//sounds.pickup.play();
}
else if (interact || object.interacted)
{
displayTextOnMap(displayX, displayY, "Upgrade Collected")
}
else if (!object.interacted)
{
displayTextOnMap(displayX, displayY, "[E] Collect Upgrade")
}
}
}
else
{
if (detectCircularCollision(object, collisionRange))
{
canvas.foreground.fillStyle = "red";
canvas.foreground.beginPath();
canvas.foreground.arc(SCREEN_MIDDLE.x+ship.width/2, SCREEN_MIDDLE.y+ship.width/2, ship.width/2 * collisionRange, 0, 2 * Math.PI);
canvas.foreground.fill();
// sticky rocks
/*
ship.xPos += ship.speed * Math.sin(-ship.rotation * Math.PI / 180); // rotationspeed
ship.yPos -= ship.speed * Math.cos(-ship.rotation * Math.PI / 180);
*/
/*
if (ship.health > 0)
{
if (ship.speed >= 0)
{
ship.health -= ship.speed + 1;
}
else
{
ship.health += ship.speed + 1;
}
}
else
{
// GAME OVER
GAME_STATE = "lost";
}
}
}
// COLLISION ENEMY
enemyArray.forEach(function(obj, i)
{
let eDisX = (object.xPos + MAP_LEFT+ship.xPos) - (MAP_LEFT+obj.xPos+ship.xPos+obj.width/2);
let eDisY = (object.yPos + MAP_TOP+ship.yPos) - (MAP_TOP+obj.yPos+ship.yPos+obj.height/2);
let dis = Math.sqrt(eDisX * eDisX + eDisY * eDisY);
if (dis < object.rad + Math.min(obj.width * collisionRange, obj.height * collisionRange) / 2)
{
canvas.foreground.fillStyle = "red";
canvas.foreground.beginPath();
canvas.foreground.arc(MAP_LEFT+obj.xPos+ship.xPos+obj.width/2, MAP_TOP+obj.yPos+ship.yPos+obj.height/2, obj.width/2 * collisionRange, 0, 2 * Math.PI);
canvas.foreground.fill();
if (obj.health > 0)
{
obj.health -= obj.speed + 1;
}
else
{
// ENEMY DIES
enemyArray.splice(i, 1);
enemyCount--;
mission.killEnemies[0]++;
}
}
});
});
*/
while (boostCount < 100)
{
boostCount++;
boostArray.push(new Boost(Math.random()*MAP_SIZE, Math.random()*MAP_SIZE))
}
boostArray.forEach(function(object, index)
{
//canvas.foreground.globalAlpha = 1;
//canvas.foreground.fillStyle = "yellow";
//canvas.foreground.fillRect(object.xPos+MAP_LEFT+ship.xPos, object.yPos+MAP_TOP+ship.yPos, 25, 40);
canvas.foreground.drawImage(images.boost, object.xPos+MAP_LEFT+ship.xPos, object.yPos+MAP_TOP+ship.yPos, 100, 100)
canvas.minimap.fillStyle = "yellow";
let minimapScale = 8;
canvas.minimap.fillRect(object.xPos/75-25/75*minimapScale/2, object.yPos/75-40/75*minimapScale/2, 25/75*minimapScale, 40/75*minimapScale);
// hitbox of ship when picking up items
/*
canvas.foreground.fillStyle = "white";
canvas.foreground.beginPath();
canvas.foreground.arc(SCREEN_MIDDLE.x+ship.width/2, SCREEN_MIDDLE.y+ship.width/2, ship.width/2 * pickupRange, 0, 2 * Math.PI);
canvas.foreground.fill();
canvas.foreground.fillRect(SCREEN_MIDDLE.x-ship.width/2*pickupRange/4, SCREEN_MIDDLE.y-ship.height/2*pickupRange/4, ship.width*pickupRange, ship.height*pickupRange)
*/
// COLLISION
if (detectRectangularCollision(object, pickupRange)) {
// collision detected
if (ship.boostTank != ship.boostCapacity)
{
// able to pick up boost
if (ship.boostCapacity - ship.boostTank <= 50)
{
ship.boostTank += ship.boostCapacity - ship.boostTank;
}
else
{
ship.boostTank += 50;
}
boostArray.splice(index, 1);
boostCount--;
/*let sound = new Audio(sounds.pickup);
sound.play();*/
//sounds.pickup.play();
//mission.collectFuel[0]++;
missions[0].completed++;
}
}
});
canvas.minimap.fillStyle = "lime";
canvas.minimap.fillRect((SCREEN_MIDDLE.x-MAP_LEFT-ship.xPos)/75-(ship.width/75*6)/2, (SCREEN_MIDDLE.y-MAP_TOP-ship.yPos)/75-(ship.height/75*6)/2, ship.width/75*6, ship.height/75*6)
// motion trail
storeLastPosition(ship.xPos, ship.yPos, ship.rotation, shipPositions);
for (var i = 0; i < shipPositions.length; i++)
{
var ratio = (i + 1) / shipPositions.length;
canvas.foreground.beginPath();
canvas.foreground.arc(SCREEN_MIDDLE.x+ship.xPos-shipPositions[i].x+ship.width/2, SCREEN_MIDDLE.y+ship.yPos-shipPositions[i].y+ship.height/2, 7.5, 0, 2 * Math.PI, true);
if (ship.speed > 5.2) {canvas.foreground.fillStyle = "rgba(255, 255, 0, " + ratio / 2 + ")";}
else {canvas.foreground.fillStyle = "rgba(255, 255, 255, " + ratio / 2 + ")";}
canvas.foreground.fill();
}
// shooting
if (blasters && !blastCooldown && ship.energyStore > 1)
{
blastCooldown = true;
setTimeout(function(){blastCooldown = false;}, 150)
laserArray.push(new Laser(MAP_SIZE/2-ship.xPos, MAP_SIZE/2-ship.yPos, shipPositions[shipPositions.length-1].rotation, 15, 0))
laserCount++;
}
if (blasters && ship.energyStore > 1)
{
lasersAreFiring = true; // this is shit. look line 220
ship.energyStore -= ship.energyConsumption;
}
else {lasersAreFiring = false;}
handleEnemies();
/*
//enemy
//collision
distanceX = (enemy.xPos + MAP_LEFT+ship.xPos + enemy.width/2) - (SCREEN_MIDDLE.x + ship.width / 2);
distanceY = (enemy.yPos + MAP_TOP+ship.yPos + enemy.height/2) - (SCREEN_MIDDLE.y + ship.height / 2);
distance = Math.sqrt(distanceX * distanceX + distanceY * distanceY);
if (distance < enemy.vision + Math.min(ship.width, ship.height) / 2)
{
//spotted
// accelerate speed
if (enemy.speed < enemy.maxSpeed) {enemy.speed += enemy.acceleration;}
else {enemy.speed = enemy.maxSpeed;}
//turning
let angle = drawLinesAndCalculateAngle(enemy);
//let angle = -calculateDefaultAngle({x: MAP_LEFT+enemy.xPos+ship.xPos+enemy.width/2, y: MAP_TOP+enemy.yPos+ship.yPos+enemy.height/2}, {x: SCREEN_MIDDLE.x + ship.width / 2, y: SCREEN_MIDDLE.y + ship.height / 2});
//enemy.rotation = -calculateDefaultAngle({x: MAP_LEFT+enemy.xPos+ship.xPos+enemy.width/2, y: MAP_TOP+enemy.yPos+ship.yPos+enemy.height/2}, {x: SCREEN_MIDDLE.x + ship.width / 2, y: SCREEN_MIDDLE.y + ship.height / 2});
//enemy.rotationSpeed = enemy.maxRotationSpeed
if (angle > 10) // left
{
// accelerate rotation
if (enemy.rotationSpeed > -enemy.maxRotationSpeed) {enemy.rotationSpeed -= enemy.rotationAcceleration}
else {enemy.rotationSpeed = -enemy.maxRotationSpeed;}
enemy.rotation += enemy.rotationSpeed;
}
else if (angle < -10) // right
{
// accelerate rotation
if (enemy.rotationSpeed < enemy.maxRotationSpeed) {enemy.rotationSpeed += enemy.rotationAcceleration}
else {enemy.rotationSpeed = enemy.maxRotationSpeed;}
enemy.rotation += enemy.rotationSpeed;
}
else // in line of sight
{
// decellerate rotation
if (enemy.rotationSpeed > 0.1) {enemy.rotationSpeed -= enemy.rotationAcceleration}
else if (enemy.rotationSpeed < -0.1) {enemy.rotationSpeed += enemy.rotationAcceleration}
else {enemy.rotationSpeed = 0;}
enemy.rotation += enemy.rotationSpeed;
if (!enemyCooldown)
{
// fire
enemyCooldown = true;
setTimeout(function(){enemyCooldown = false;}, 150)
laserArray.push(new Laser(enemy.xPos+enemy.width/2, enemy.yPos+enemy.height/2, -enemyPositions[enemyPositions.length-1].rotation, 0))
laserCount++;
}
}
}
else
{
// decellerate speed
if (enemy.speed > enemy.maxSpeed+0.1) {enemy.speed -= enemy.acceleration;}
else if (enemy.speed > 0.1) {enemy.speed -= enemy.speed*enemy.deceleration;} // Deceleration value
else {enemy.speed = 0;}
}
canvas.enemies.save();
// rotation
canvas.enemies.translate((MAP_LEFT+enemy.xPos+ship.xPos)+enemy.width/2, (MAP_TOP+enemy.yPos+ship.yPos)+enemy.height/2)
canvas.enemies.rotate(enemy.rotation * Math.PI / 180);
canvas.enemies.translate(-((MAP_LEFT+enemy.xPos+ship.xPos)+enemy.width/2), -((MAP_TOP+enemy.yPos+ship.yPos)+enemy.height/2))
canvas.enemies.drawImage(enemy.image, MAP_LEFT+enemy.xPos+ship.xPos, MAP_TOP+enemy.yPos+ship.yPos, enemy.width, enemy.height);
canvas.enemies.restore();
//movement
enemy.xPos += enemy.speed * Math.sin(enemy.rotation * Math.PI / 180);
enemy.yPos -= enemy.speed * Math.cos(enemy.rotation * Math.PI / 180);
canvas.minimap.fillStyle = "red";
canvas.minimap.fillRect((enemy.xPos)/75-(enemy.width/75*6)/2, (enemy.yPos)/75-(enemy.height/75*6)/2, enemy.width/75*6, enemy.height/75*6)
storeLastPosition(enemy.xPos, enemy.yPos, enemy.rotation, enemyPositions);
for (var i = 0; i < enemyPositions.length-1; i++)
{
var ratio = (i + 1) / enemyPositions.length;
canvas.foreground.beginPath();
canvas.foreground.arc(MAP_LEFT+ship.xPos+enemyPositions[i].x+enemy.width/2, MAP_TOP+ship.yPos+enemyPositions[i].y+enemy.height/2, 7.5, 0, 2 * Math.PI, true);
if (enemy.speed > 5.2) {canvas.foreground.fillStyle = "rgba(255, 255, 0, " + ratio / 2 + ")";}
else {canvas.foreground.fillStyle = "rgba(255, 255, 255, " + ratio / 2 + ")";}
canvas.foreground.fill();
}
*/
laserArray.forEach(function(object, index)
{
object.xPos -= object.speed * Math.sin(object.rotation * Math.PI / 180);
object.yPos -= object.speed * Math.cos(object.rotation * Math.PI / 180);
object.distance += object.speed;
if (object.distance > object.speed*500)
{
// Fade out
laserArray.splice(index, 1)
laserCount--;
}
if (object.distance > 60)
{
// collision ship
let disX = (object.xPos + MAP_LEFT+ship.xPos) - (SCREEN_MIDDLE.x + ship.width / 2);
let disY = (object.yPos + MAP_TOP+ship.yPos) - (SCREEN_MIDDLE.y + ship.height / 2);
let dis = Math.sqrt(disX * disX + disY * disY);
if (dis < 5 + Math.min(ship.width * collisionRange, ship.height * collisionRange) / 2)
{
laserArray.splice(index, 1)
laserCount--;
if (ship.shield > 0)
{
if (ship.shield < 10)
{
let remainder = 10 - ship.shield;
ship.shield -= ship.shield;
ship.health -= remainder;
}
else
{
canvas.foreground.fillStyle = "blue";
ship.shield -= 10;
}
}
else if (ship.health > 0)
{
canvas.foreground.fillStyle = "red";
ship.health -= 10;
}
else
{
// GAME OVER
GAME_STATE = "lost";
}
if (ship.health <= 0)
{
// GAME OVER
GAME_STATE = "lost";
}
canvas.foreground.beginPath();
canvas.foreground.arc(SCREEN_MIDDLE.x+ship.width/2, SCREEN_MIDDLE.y+ship.width/2, ship.width/2 * collisionRange, 0, 2 * Math.PI);
canvas.foreground.fill();
}
// collision enemy
enemyArray.forEach(function(obj, i)
{
let eDisX = (object.xPos + MAP_LEFT+ship.xPos) - (MAP_LEFT+obj.xPos+ship.xPos+obj.width/2);
let eDisY = (object.yPos + MAP_TOP+ship.yPos) - (MAP_TOP+obj.yPos+ship.yPos+obj.height/2);
let dis = Math.sqrt(eDisX * eDisX + eDisY * eDisY);
if (dis < 5 + Math.min(obj.width, obj.height) / 2)
{
canvas.foreground.fillStyle = "red";
canvas.foreground.beginPath();
canvas.foreground.arc(MAP_LEFT+obj.xPos+ship.xPos+obj.width/2, MAP_TOP+obj.yPos+ship.yPos+obj.height/2, obj.width/2, 0, 2 * Math.PI);
canvas.foreground.fill();
laserArray.splice(index, 1)
laserCount--;
if (obj.health > 0)
{
obj.health -= 10;
}
else
{
// ENEMY DIES
enemyArray.splice(i, 1);
enemyCount--;
//mission.killEnemies[0]++;
missions[1].completed++;
}
}
});
}
// collision rocks
bodies.forEach(function(rock)
{
let distanceX = (rock.x - object.xPos);
let distanceY = (rock.y - object.yPos);
let distance = Math.sqrt(distanceX * distanceX + distanceY * distanceY);
if (distance < rock.radius + 5)
{
// Collision
laserArray.splice(index, 1)
laserCount--;
}
});
// lines
/*
canvas.foreground.beginPath();
canvas.foreground.moveTo(MAP_LEFT+object.xPos+ship.xPos+25 * Math.sin(object.rotation * Math.PI / 180), MAP_TOP+object.yPos+ship.yPos+25 * Math.cos(object.rotation * Math.PI / 180))
canvas.foreground.lineTo(MAP_LEFT+object.xPos+ship.xPos, MAP_TOP+object.yPos+ship.yPos);
canvas.foreground.strokeStyle = "red";
canvas.foreground.lineWidth = 5;
canvas.foreground.stroke();
*/
// circle
canvas.foreground.beginPath()
canvas.foreground.arc(MAP_LEFT+object.xPos+ship.xPos, MAP_TOP+object.yPos+ship.yPos, 5, 0, 2 * Math.PI, true); //SCREEN_MIDDLE.x-ship.xPos+ship.width/2
canvas.foreground.fillStyle = "red";
canvas.foreground.fill();
});
canvas.playerCamera.drawImage(ship.image, SCREEN_MIDDLE.x, SCREEN_MIDDLE.y, ship.width, ship.height);
drawInterface();
canvas.background.restore();
let completedMissions = 0;
for (let i = 0; i < missions.length; i++)
{
if (missions[i].completed >= missions[i].goal)
{completedMissions++;}
}
if (completedMissions == missions.length)
{
GAME_STATE = "won";
}
if (GAME_STATE == "won")
{
displayTextOnScreen("middle", 1, 50, "lime", "You Win")
displayTextOnScreen("middle", 3, 20, "white", "Reload page to play again")
}
if (GAME_STATE == "lost")
{
displayTextOnScreen("middle", 1, 50, "red", "Game Over")
displayTextOnScreen("middle", 3, 20, "white", "Reload page")
}
if (GAME_STATE == "playing")
{
setTimeout(updateScreen, GAME_UPDATE_SPEED);
}
}
updateScreen();
</script>
</body>
</html>