mr-crocs-adventures/js/Game.js

237 lines
8.5 KiB
JavaScript

import MrCroc from "./MrCroc.js";
import Gisela from "./Gisela.js";
import RetroArchitecture from "./retro/RetroArchitecture.js";
import Camera from "./Camera.js";
import TextMessageMrCroc from "./ui/TextMessageMrCroc.js";
import TextMessageGisela from "./ui/TextMessageGisela.js";
import UserInterface from "./ui/UserInterface.js";
import Key from "./Key.js";
import Setting from "./Setting.js";
import {EventBus} from "./events/EventBus.js";
import InterfaceEvent from "./events/InterfaceEvent.js";
import FrameRateMeasurer from "./FrameRateMeasurer.js";
export class Game
{
static GAME_SPEED = 1
constructor(level) {
this.level = level;
this.fps = 0;
this.frameDuration = 0;
this.lastRendered = undefined;
this.lastTimestamp = undefined;
this.canvas = document.getElementById('canvas');
this.context = this.canvas.getContext('2d');
this.mrCroc = new MrCroc();
this.gisela = new Gisela();
this.architecture = RetroArchitecture.createFromData(this.level);
const cameraPosition = this.architecture.getStartPosition();
this.camera = new Camera(cameraPosition.x, cameraPosition.y);
this.gameFinished = false;
this.hasPlayerLeftArchitecture = false;
this.textBoxGameStart = new TextMessageMrCroc('Mr. Croc: "Where is Gisela? I have to find her!"', this.context);
this.textBoxGameFinished = new TextMessageGisela(
'Gisela: "Thanks for showing up, Mr. Croc, but I\'m not in danger."',
this.context
);
this.userInterface = new UserInterface();
this.isPaused = true;
this.KeyLeft = new Key('ArrowLeft');
this.KeyRight = new Key('ArrowRight');
this.KeyJump = new Key('Space');
this.KeyLoad = new Key('KeyL');
}
render(timestamp)
{
if (timestamp - this.lastRendered < this.frameDuration) {
return;
}
if (this.gisela.currentAnimation !== 'LOOK_LEFT' && this.mrCroc.position.x < this.gisela.position.x) {
this.gisela.currentAnimation = 'LOOK_LEFT';
} else if (this.gisela.currentAnimation !== 'LOOK_RIGHT' && this.mrCroc.position.x >= this.gisela.position.x) {
this.gisela.currentAnimation = 'LOOK_RIGHT';
}
this.context.clearRect(0, 0, window.innerWidth, window.innerHeight);
this.architecture.draw(this.context, this.camera);
this.mrCroc.draw(this.context, this.camera);
this.gisela.draw(this.context, this.camera);
this.userInterface.draw(this.context);
this.lastRendered = timestamp;
}
canBeFinished()
{
return (
!this.gameFinished &&
this.mrCroc.isJumping === false &&
this.architecture.isMovableInsideTargetPosition(this.mrCroc)
);
}
handlePhysics(delta, timestamp)
{
const ceilingHeight = Math.max(
this.architecture.getCeilingHeight(this.mrCroc.getPositionHeadLeft()),
this.architecture.getCeilingHeight(this.mrCroc.getPositionHeadRight()),
);
const groundHeight = Math.min(
this.architecture.getGroundHeight(this.mrCroc.getPositionFootLeft()),
this.architecture.getGroundHeight(this.mrCroc.getPositionFootRight())
);
/* Handle falling */
this.mrCroc.position.y += this.mrCroc.fallSpeed;
this.mrCroc.fallSpeed += this.level.gravity * delta;
/* Handle ground collision */
if (this.mrCroc.position.y > groundHeight && this.mrCroc.fallSpeed > 0) {
this.mrCroc.position.y = groundHeight;
this.mrCroc.fallSpeed = 0;
}
/* Handle ceiling collision */
if (this.mrCroc.position.y - this.mrCroc.getHeight() <= ceilingHeight) {
this.mrCroc.fallSpeed = 0;
this.mrCroc.position.y = ceilingHeight + this.mrCroc.getHeight() + 1;
}
this.handlePlayerMovement(delta, timestamp, groundHeight);
}
updateCamera()
{
this.camera.focusPosition(
this.mrCroc.position.x - this.mrCroc.getWidth() * 0.5,
this.mrCroc.position.y - this.mrCroc.getHeight() * 0.5,
20
);
this.camera.lockCameraIntoBorders();
}
handlePlayerMovement(delta, timestamp, groundHeight)
{
/* Jumping */
if (!this.mrCroc.isJumping && this.mrCroc.fallSpeed === 0 && this.mrCroc.position.y === groundHeight && this.KeyJump.isPressed()) {
this.mrCroc.jump();
} else if (!this.KeyJump.isPressed()) {
this.mrCroc.isJumping = false;
}
/* Movement left and right */
if (!this.hasPlayerLeftArchitecture && this.KeyLeft.isPressed()) {
const lastWallLeft = Math.min(
this.architecture.getWallLeft(this.mrCroc.getPositionHeadLeft()),
this.architecture.getWallLeft(this.mrCroc.getPositionFootLeft())
);
this.mrCroc.moveLeft(timestamp, delta);
if (this.mrCroc.position.x <= lastWallLeft + this.mrCroc.getWidth() * 0.5) {
this.mrCroc.position.x = lastWallLeft + this.mrCroc.getWidth() * 0.5 + 1;
}
} else if (!this.hasPlayerLeftArchitecture && this.KeyRight.isPressed()) {
const lastWallRight = Math.max(
this.architecture.getWallRight(this.mrCroc.getPositionHeadRight()),
this.architecture.getWallRight(this.mrCroc.getPositionFootRight())
);
this.mrCroc.moveRight(timestamp, delta);
if (this.mrCroc.position.x >= lastWallRight - this.mrCroc.getWidth() * 0.5) {
this.mrCroc.position.x = lastWallRight - this.mrCroc.getWidth() * 0.5 - 1;
}
}
if (!this.hasPlayerLeftArchitecture && !this.architecture.isInsideArchitecture(this.mrCroc.position)) {
this.hasPlayerLeftArchitecture = true;
setTimeout(
() => {
this.architecture.setMovableToStartPosition(this.mrCroc);
this.hasPlayerLeftArchitecture = false;
}, 2000
);
}
}
finish()
{
this.gameFinished = true;
this.KeyLeft.pressed = false;
this.KeyRight.pressed = false;
this.KeyJump.pressed = false;
this.lastTimestamp = undefined;
this.lastRendered = undefined;
this.textBoxGameFinished.updateLines(window.innerWidth - 40, this.context);
this.textBoxGameFinished.animate(75);
this.userInterface.addTextBox(this.textBoxGameFinished);
}
init(loopFunction) {
if (this.isChromeBrowser()) {
this.canvas.width = window.innerWidth - 1;
this.canvas.height = window.innerHeight - 1;
}
this.canvas.style.backgroundAttachment = 'fixed';
this.canvas.style.backgroundSize = 'cover';
this.canvas.style.backgroundPosition = 'center center';
if (this.level.getBackgroundImage() !== undefined) {
this.canvas.style.backgroundImage = "url("+ Setting.GRAPHICS_LOCATION + this.level.getBackgroundImage() + ")";
} else {
this.canvas.style.backgroundImage = 'none';
}
this.canvas.style.backgroundColor = this.level.getBackgroundColor();
this.canvas.width = window.innerWidth;
this.canvas.height = window.innerHeight;
EventBus.addEventListener(
'resize',
function () {
this.canvas.width = window.innerWidth;
this.canvas.height = window.innerHeight;
}
);
this.textBoxGameStart.animate(75, 1000);
this.textBoxGameStart.show(1000);
this.textBoxGameStart.hide(10000);
this.userInterface.addTextBox(this.textBoxGameStart);
this.camera.borderRight = this.architecture.columns * this.architecture.tileWidth;
this.camera.borderBottom = this.architecture.rows * this.architecture.tileHeight;
this.architecture.setMovableToStartPosition(this.mrCroc);
this.architecture.setMovableToTargetPosition(this.gisela);
EventBus.addEventListener(
InterfaceEvent.FRAME_RATE_MEASURED,
(event) => {
this.isPaused = false;
this.fps = event.frameRate;
this.frameDuration = 1000.0 / this.fps;
window.requestAnimationFrame(loopFunction);
}
);
new FrameRateMeasurer();
}
isChromeBrowser()
{
return navigator.userAgent.match('Chrome') !== null;
}
}