bp-space-invaders
Version:
The BP Space Invaders Game
76 lines • 11.7 kB
JavaScript
import { ObservableTypeEnum } from '../enum/observable-type.enum';
import { Missile2Class } from '../missile/missile-2/missile-2.class';
import { BombClass } from '../bomb/bomb.class';
export class ProjectileService {
constructor(gameService, ctx, boundary) {
this.gameService = gameService;
this.ctx = ctx;
this.boundary = boundary;
this.spaceshipMissiles = [];
this.alienBombs = [];
this.isGamePaused = false;
this.init();
}
init() {
this.gameService.getMasterObservable().subscribe((event) => {
if (event.type === ObservableTypeEnum.missileShot) {
this.launchMissile(event);
}
else if (event.type === ObservableTypeEnum.bombDropped) {
this.dropBomb(event);
}
else if (event.type === ObservableTypeEnum.gamePaused) {
this.isGamePaused = event.booleanData;
}
});
}
findUnusedMissile() {
return this.spaceshipMissiles.filter((missile) => missile.isDestroyed)[0];
}
findUnusedBomb() {
return this.alienBombs.filter((bomb) => bomb.isDestroyed)[0];
}
getActiveMissiles() {
return this.spaceshipMissiles.filter((missile) => !missile.isDestroyed);
}
getActiveBombs() {
return this.alienBombs.filter((bomb) => !bomb.isDestroyed);
}
removeProjectiles() {
this.getActiveMissiles().map((missile) => {
missile.isDestroyed = true;
});
this.getActiveBombs().map((bomb) => {
bomb.isDestroyed = true;
});
}
animate(now = 0) {
if (!this.isGamePaused) {
this.getActiveMissiles().map((missile) => {
missile.animate(now);
});
this.getActiveBombs().map((bomb) => {
bomb.animate(now);
});
}
}
launchMissile(event) {
let missile = this.findUnusedMissile();
if (!missile) {
missile = new Missile2Class(this.gameService, this.ctx, this.boundary, this.spaceshipMissiles.length);
this.spaceshipMissiles.push(missile);
}
missile.isDestroyed = false;
missile.move(event.assetCoordinateData);
}
dropBomb(event) {
let bomb = this.findUnusedBomb();
if (!bomb) {
bomb = new BombClass(this.gameService, this.ctx, this.boundary, this.alienBombs.length);
this.alienBombs.push(bomb);
}
bomb.isDestroyed = false;
bomb.move(event.assetCoordinateData);
}
}
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{ GameService } from './game.service';\nimport { ObservableModel } from '../model/observable.model';\nimport { ObservableTypeEnum } from '../enum/observable-type.enum';\nimport { Missile2Class } from '../missile/missile-2/missile-2.class';\nimport { MissileClass } from '../missile/missile/missile.class';\nimport { BombClass } from '../bomb/bomb.class';\nimport { BoundarySetupModel } from '../model/boundary-set.model';\n\n/**\n * The projectile service\n */\nexport class ProjectileService {\n  /**\n   * The spaceship missiles\n   */\n  private spaceshipMissiles: MissileClass[];\n  /**\n   * The game is paused\n   */\n  private isGamePaused: boolean;\n  /**\n   * The alien bombs\n   */\n  private alienBombs: BombClass[];\n\n  /**\n   * The constructor\n   *\n   * @param gameService The GameService\n   * @param ctx The ctx\n   * @param boundary The boundary setup model\n   */\n  constructor(\n    private gameService: GameService,\n    private ctx: CanvasRenderingContext2D,\n    private boundary: BoundarySetupModel\n  ) {\n    this.spaceshipMissiles = [];\n    this.alienBombs = [];\n    this.isGamePaused = false;\n\n    this.init();\n  }\n\n  /**\n   * Init the service with the listener\n   */\n  private init(): void {\n    this.gameService.getMasterObservable().subscribe((event: ObservableModel) => {\n      if (event.type === ObservableTypeEnum.missileShot) {\n        this.launchMissile(event);\n      } else if (event.type === ObservableTypeEnum.bombDropped) {\n        this.dropBomb(event);\n      } else if (event.type === ObservableTypeEnum.gamePaused) {\n        this.isGamePaused = event.booleanData;\n      }\n    });\n  }\n\n  /**\n   * Find any unused missiles\n   */\n  private findUnusedMissile(): MissileClass {\n    return this.spaceshipMissiles.filter((missile: MissileClass) => missile.isDestroyed)[0];\n  }\n\n  /**\n   * Find any unused bombs\n   */\n  private findUnusedBomb(): BombClass {\n    return this.alienBombs.filter((bomb: BombClass) => bomb.isDestroyed)[0];\n  }\n\n  /**\n   * Return all Active Missiles\n   */\n  public getActiveMissiles(): MissileClass[] {\n    return this.spaceshipMissiles.filter((missile: MissileClass) => !missile.isDestroyed);\n  }\n\n  /**\n   * Return all Active Missiles\n   */\n  public getActiveBombs(): BombClass[] {\n    return this.alienBombs.filter((bomb: BombClass) => !bomb.isDestroyed);\n  }\n\n  /**\n   * Remove all the projectiles\n   */\n  public removeProjectiles(): void {\n    this.getActiveMissiles().map((missile: MissileClass) => {\n      missile.isDestroyed = true;\n    });\n\n    this.getActiveBombs().map((bomb: BombClass) => {\n      bomb.isDestroyed = true;\n    });\n  }\n\n  /**\n   * Animate the missiles\n   * @param now  the current time stamp\n   */\n  animate(now = 0): void {\n    if (!this.isGamePaused) {\n      this.getActiveMissiles().map((missile: MissileClass) => {\n        missile.animate(now);\n      });\n\n      this.getActiveBombs().map((bomb: BombClass) => {\n        bomb.animate(now);\n      });\n    }\n  }\n\n  /**\n   * Launch a Missile\n   * @param event The event\n   */\n  private launchMissile(event: ObservableModel): void {\n    let missile = this.findUnusedMissile();\n    if (!missile) {\n      missile = new Missile2Class(this.gameService, this.ctx, this.boundary, this.spaceshipMissiles.length);\n      this.spaceshipMissiles.push(missile);\n    }\n    missile.isDestroyed = false;\n\n    missile.move(event.assetCoordinateData);\n  }\n\n  /**\n   * Drop a bomb\n   * @param event The event\n   */\n  private dropBomb(event: ObservableModel): void {\n    let bomb = this.findUnusedBomb();\n    if (!bomb) {\n      bomb = new BombClass(this.gameService, this.ctx, this.boundary, this.alienBombs.length);\n      this.alienBombs.push(bomb);\n    }\n    bomb.isDestroyed = false;\n\n    bomb.move(event.assetCoordinateData);\n  }\n}\n"]}