Improve gameplay

backend/src/create-world.ts

@@ -6,11 +6,11 @@ import { PhysicalContainer } from './physics/containers/physical-container';
 import { evaluateSdf } from './physics/functions/evaluate-sdf';
 import { Physical } from './physics/physicals/physical';
 
-export const createWorld = (objectContainer: PhysicalContainer, worldRadius: number) => {
+export const createWorld = (objectContainer: PhysicalContainer) => {
   const objects: Array<Physical> = [];
   const lights: Array<Physical> = [];
 
-  for (let r = 0; r < worldRadius; r += settings.radiusSteps) {
+  for (let r = 0; r < settings.worldRadius; r += settings.radiusSteps) {
     const circumference = 2 * Math.PI * r;
     const stepCount = circumference * settings.objectsOnCircleLength;
     for (let rad = 0; rad < 2 * Math.PI; rad += (2 * Math.PI) / stepCount) {
@@ -67,8 +67,29 @@ export const createWorld = (objectContainer: PhysicalContainer, worldRadius: num
       }
     }
   }
-  console.info('Generated planet count', objects.length);
-  console.info('Generated light count', lights.length);
+  console.info(`Generated ${objects.length} planets`);
+  console.info(`Generated ${lights.length} light`);
+
+  // Associate each lamp with its NEAREST planet, so a planet can repaint "its"
+  // lamps to the owning team's colour when it flips. Lamps are already placed by
+  // proximity during world-gen, so the nearest planet is the one whose capture
+  // they should advertise. Distances use the planet SDF (negative inside), which
+  // is exactly the "closest planet" metric we want.
+  const planets = objects.filter((o): o is PlanetPhysical => o instanceof PlanetPhysical);
+  lights
+    .filter((l): l is LampPhysical => l instanceof LampPhysical)
+    .forEach((lamp) => {
+      let nearest: PlanetPhysical | undefined;
+      let nearestDistance = Infinity;
+      planets.forEach((planet) => {
+        const distance = planet.distance(lamp.center);
+        if (distance < nearestDistance) {
+          nearestDistance = distance;
+          nearest = planet;
+        }
+      });
+      nearest?.addLamp(lamp);
+    });
 
   [...objects, ...lights].forEach((o) => objectContainer.addObject(o));
 };

backend/src/default-options.ts

@@ -4,8 +4,7 @@ export const defaultOptions: Options = {
   port: 3000,
   name: 'Test server',
   playerLimit: 16,
-  npcCount: 16,
+  npcCount: 8,
   seed: Math.random(),
-  scoreLimit: 1000,
-  worldSize: 8000,
+  scoreLimit: 2500,
 };

backend/src/game-server.ts

@@ -41,7 +41,7 @@ export class GameServer extends CommandReceiver {
   private initialize() {
     const previousPlayers = this.players;
     this.objects = new PhysicalContainer();
-    createWorld(this.objects, this.options.worldSize);
+    createWorld(this.objects);
     this.objects.initialize();
     this.players = new PlayerContainer(
       this.objects,

backend/src/objects/lamp-physical.ts

@@ -32,6 +32,10 @@ export class LampPhysical extends LampBase implements StaticPhysical {
     return this;
   }
 
+  public queueSetLight(color: vec3, lightness: number) {
+    this.remoteCall('setLight', color, lightness);
+  }
+
   public distance(target: vec2): number {
     return vec2.distance(this.center, target);
   }

backend/src/objects/projectile-physical.ts

@@ -53,6 +53,13 @@ export class ProjectilePhysical extends ProjectileBase implements DynamicPhysica
     return !this.isDestroyed;
   }
 
+  public get direction(): vec2 {
+    const direction = vec2.clone(this.velocity);
+    return vec2.length(direction) > 0
+      ? vec2.normalize(direction, direction)
+      : vec2.fromValues(0, -1);
+  }
+
   private moveOutsideOfObject() {
     let wasCollision = true;
     const delta = vec2.scale(

backend/src/options.ts

@@ -5,5 +5,4 @@ export interface Options {
   scoreLimit: number;
   npcCount: number;
   seed: number;
-  worldSize: number;
 }

backend/src/players/player-base.ts

@@ -1,9 +1,17 @@
 import { vec2 } from 'gl-matrix';
-import { CommandReceiver, Circle, PlayerInformation, CharacterTeam } from 'shared';
+import {
+  CommandReceiver,
+  Circle,
+  PlayerInformation,
+  CharacterTeam,
+  Random,
+  settings,
+} from 'shared';
 import { PhysicalContainer } from '../physics/containers/physical-container';
 import { getBoundingBoxOfCircle } from '../physics/functions/get-bounding-box-of-circle';
 import { isCircleIntersecting } from '../physics/functions/is-circle-intersecting';
 import { CharacterPhysical } from '../objects/character-physical';
+import { PlanetPhysical } from '../objects/planet-physical';
 import { PlayerContainer } from './player-container';
 
 export abstract class PlayerBase extends CommandReceiver {
@@ -22,14 +30,14 @@ export abstract class PlayerBase extends CommandReceiver {
     super();
   }
 
-  protected createCharacter(preferredCenter: vec2) {
+  protected createCharacter() {
     this.character = new CharacterPhysical(
       this.playerInfo.name.slice(0, 20),
       this.sumKills,
       this.sumDeaths,
       this.team,
       this.objectContainer,
-      this.findEmptyPositionForPlayer(preferredCenter),
+      this.findEmptyPositionForPlayer(this.findSpawnCenter()),
     );
 
     this.objectContainer.addObject(this.character);
@@ -37,14 +45,37 @@ export abstract class PlayerBase extends CommandReceiver {
 
   public abstract step(deltaTimeInSeconds: number): void;
 
-  protected findEmptyPositionForPlayer(preferredCenter: vec2): vec2 {
-    if (!preferredCenter) {
-      preferredCenter = vec2.create();
+  private findSpawnCenter(): vec2 {
+    const planets = this.objectContainer
+      .findIntersecting(
+        getBoundingBoxOfCircle(new Circle(vec2.create(), settings.worldRadius * 2)),
+      )
+      .filter((o): o is PlanetPhysical => o instanceof PlanetPhysical);
+
+    const friendly = planets.filter((p) => p.team === this.team);
+    const neutral = planets.filter((p) => p.team === CharacterTeam.neutral);
+    const candidates = friendly.length ? friendly : neutral.length ? neutral : planets;
+    if (candidates.length === 0) {
+      return vec2.create();
     }
 
+    const isContested = (planet: PlanetPhysical) =>
+      this.playerContainer.players.some(
+        (p) =>
+          p.team !== this.team &&
+          p.character?.isAlive &&
+          vec2.distance(p.center, planet.center) < settings.spawnSafetyDistance,
+      );
+    const safe = candidates.filter((p) => !isContested(p));
+
+    // candidates is non-empty here, so choose() always returns a planet.
+    return vec2.clone(Random.choose(safe.length ? safe : candidates)!.center);
+  }
+
+  protected findEmptyPositionForPlayer(preferredCenter: vec2): vec2 {
     let rotation = 0;
     let radius = 0;
-    for (;;) {
+    for (; ;) {
       const playerPosition = vec2.fromValues(
         radius * Math.cos(rotation) + preferredCenter.x,
         radius * Math.sin(rotation) + preferredCenter.y,

backend/src/players/player.ts

@@ -42,9 +42,8 @@ export class Player extends PlayerBase {
       (this.aspectRatio = v.aspectRatio),
     [MoveActionCommand.type]: (c: MoveActionCommand) =>
       this.character?.handleMovementAction(c),
-    [PrimaryActionCommand.type]: (c: PrimaryActionCommand) => {
-      this.character?.shootTowards(c.position);
-    },
+    [PrimaryActionCommand.type]: (c: PrimaryActionCommand) =>
+      this.character?.shootTowards(c.position, c.charge),
   };
 
   constructor(
@@ -60,11 +59,7 @@ export class Player extends PlayerBase {
   }
 
   protected createCharacter() {
-    const preferredCenter = this.playerContainer.players.find(
-      (p) => p.character?.isAlive && p.team === this.team,
-    )?.center;
-
-    super.createCharacter(preferredCenter ?? vec2.create());
+    super.createCharacter();
 
     this.objectsPreviouslyInViewArea.push(this.character!);
     this.queueCommandSend(new CreatePlayerCommand(this.character!));
@@ -206,8 +201,4 @@ export class Player extends PlayerBase {
       this.queueCommandSend(new ServerAnnouncement(announcement));
     }
   }
-
-  public destroy() {
-    super.destroy();
-  }
 }

backend/src/react-to-collision.ts

@@ -1,7 +0,0 @@
-import { Command, GameObject } from 'shared';
-
-export class ReactToCollisionCommand extends Command {
-  public constructor(public readonly other: GameObject) {
-    super();
-  }
-}