create unit layer

TODO.txt

@@ -172,11 +172,12 @@
 * rewrite EventsDisplay DONE 11/1/2024
 * update Mena NPC locations DONE 11/1/2024
 * create build menu DONE 11/3/2024
-* add gold
-* add troop/worker slider
-* add battleship
+* add gold DONE 11/4/2024
+* add troop/worker slider DONE 11/4/2024
+* create Unit layer DONE 11/9/2024
+* create Unit interface
+* add destroyer
 * NPC has relations
-* fix name rendering
 * use twitter emojis
 * private game shows how many players joined
 * optimize sendBoat function

src/client/graphics/GameRenderer.ts

@@ -14,6 +14,7 @@ import { Leaderboard } from "./layers/Leaderboard";
 import { ControlPanel } from "./layers/ControlPanel";
 import { UIState } from "./UIState";
 import { BuildMenu } from "./layers/radial/BuildMenu";
+import { UnitLayer } from "./layers/UnitLayer";
 
 
 export function createRenderer(canvas: HTMLCanvasElement, game: Game, eventBus: EventBus, clientID: ClientID): GameRenderer {
@@ -61,6 +62,7 @@ export function createRenderer(canvas: HTMLCanvasElement, game: Game, eventBus:
 	const layers: Layer[] = [
 		new TerrainLayer(game),
 		new TerritoryLayer(game, eventBus),
+		new UnitLayer(game, eventBus),
 		new NameLayer(game, game.config().theme(), transformHandler, clientID),
 		new UILayer(eventBus, game, clientID, transformHandler),
 		eventsDisplay,

src/client/graphics/layers/TerritoryLayer.ts

@@ -1,5 +1,5 @@
 import { PriorityQueue } from "@datastructures-js/priority-queue";
-import {Boat, BoatEvent, Cell, Game, Player, Tile, TileEvent} from "../../../core/game/Game";
+import { Cell, Game, Player, Tile, TileEvent } from "../../../core/game/Game";
 import { PseudoRandom } from "../../../core/PseudoRandom";
 import { Colord } from "colord";
 import { bfs, dist } from "../../../core/Util";
@@ -17,17 +17,17 @@ export class TerritoryLayer implements Layer {
     private random = new PseudoRandom(123)
     private theme: Theme = null
 
-    private boatToTrail = new Map<Boat, Set<Tile>>()
 
 
     constructor(private game: Game, eventBus: EventBus) {
         this.theme = game.config().theme()
         eventBus.on(TileEvent, e => this.tileUpdate(e))
-        eventBus.on(BoatEvent, e => this.boatEvent(e))
     }
+
     shouldTransform(): boolean {
         return true
     }
+
     tick() {
     }
 
@@ -62,31 +62,6 @@ export class TerritoryLayer implements Layer {
         )
     }
 
-    boatEvent(event: BoatEvent) {
-        if (!this.boatToTrail.has(event.boat)) {
-            this.boatToTrail.set(event.boat, new Set<Tile>())
-        }
-        const trail = this.boatToTrail.get(event.boat)
-        trail.add(event.oldTile)
-        bfs(event.oldTile, dist(event.oldTile, 3)).forEach(t => {
-            this.paintTerritory(t)
-        })
-        if (event.boat.isActive()) {
-            bfs(event.boat.tile(), dist(event.boat.tile(), 4)).forEach(
-                t => {
-                    if (trail.has(t)) {
-                        this.paintCell(t.cell(), this.theme.territoryColor(event.boat.owner().info()), 150)
-                    }
-                }
-            )
-            bfs(event.boat.tile(), dist(event.boat.tile(), 2)).forEach(t => this.paintCell(t.cell(), this.theme.borderColor(event.boat.owner().info()), 255))
-            bfs(event.boat.tile(), dist(event.boat.tile(), 1)).forEach(t => this.paintCell(t.cell(), this.theme.territoryColor(event.boat.owner().info()), 180))
-        } else {
-            trail.forEach(t => this.paintTerritory(t))
-            this.boatToTrail.delete(event.boat)
-        }
-    }
-
     renderTerritory() {
         let numToRender = Math.floor(this.tileToRenderQueue.size() / 10)
         if (numToRender == 0) {

src/client/graphics/layers/UnitLayer.ts

@@ -0,0 +1,103 @@
+import { Colord } from "colord";
+import { Theme } from "../../../core/configuration/Config";
+import { Boat, BoatEvent, Cell, Game, Tile } from "../../../core/game/Game";
+import { bfs, dist } from "../../../core/Util";
+import { Layer } from "./Layer";
+import { EventBus } from "../../../core/EventBus";
+
+export class UnitLayer implements Layer {
+    private canvas: HTMLCanvasElement
+    private context: CanvasRenderingContext2D
+    private imageData: ImageData
+
+    private boatToTrail = new Map<Boat, Set<Tile>>()
+
+    private theme: Theme = null
+
+    constructor(private game: Game, private eventBus: EventBus) {
+        this.theme = game.config().theme()
+    }
+
+    shouldTransform(): boolean {
+        return true
+    }
+
+    tick() {
+    }
+
+    init(game: Game) {
+        this.canvas = document.createElement('canvas');
+        this.context = this.canvas.getContext("2d")
+
+        this.imageData = this.context.getImageData(0, 0, this.game.width(), this.game.height())
+        this.canvas.width = this.game.width();
+        this.canvas.height = this.game.height();
+        this.context.putImageData(this.imageData, 0, 0);
+        this.initImageData()
+
+        this.eventBus.on(BoatEvent, e => this.onBoatEvent(e))
+    }
+
+    initImageData() {
+        this.game.forEachTile((tile) => {
+            const index = (tile.cell().y * this.game.width()) + tile.cell().x
+            const offset = index * 4
+            this.imageData.data[offset + 3] = 0
+        })
+    }
+
+    renderLayer(context: CanvasRenderingContext2D) {
+        this.context.putImageData(this.imageData, 0, 0);
+        context.drawImage(
+            this.canvas,
+            -this.game.width() / 2,
+            -this.game.height() / 2,
+            this.game.width(),
+            this.game.height()
+        )
+    }
+
+
+    onBoatEvent(event: BoatEvent) {
+        if (!this.boatToTrail.has(event.boat)) {
+            this.boatToTrail.set(event.boat, new Set<Tile>())
+        }
+        const trail = this.boatToTrail.get(event.boat)
+        trail.add(event.oldTile)
+        bfs(event.oldTile, dist(event.oldTile, 3)).forEach(t => {
+            this.clearCell(t.cell())
+        })
+        if (event.boat.isActive()) {
+            bfs(event.boat.tile(), dist(event.boat.tile(), 4)).forEach(
+                t => {
+                    if (trail.has(t)) {
+                        this.paintCell(t.cell(), this.theme.territoryColor(event.boat.owner().info()), 150)
+                    }
+                }
+            )
+            bfs(event.boat.tile(), dist(event.boat.tile(), 2)).forEach(t => this.paintCell(t.cell(), this.theme.borderColor(event.boat.owner().info()), 255))
+            bfs(event.boat.tile(), dist(event.boat.tile(), 1)).forEach(t => this.paintCell(t.cell(), this.theme.territoryColor(event.boat.owner().info()), 180))
+        } else {
+            trail.forEach(t => this.clearCell(t.cell()))
+            this.boatToTrail.delete(event.boat)
+        }
+    }
+
+
+    paintCell(cell: Cell, color: Colord, alpha: number) {
+        const index = (cell.y * this.game.width()) + cell.x
+        const offset = index * 4
+        this.imageData.data[offset] = color.rgba.r;
+        this.imageData.data[offset + 1] = color.rgba.g;
+        this.imageData.data[offset + 2] = color.rgba.b;
+        this.imageData.data[offset + 3] = alpha
+    }
+
+    clearCell(cell: Cell) {
+        const index = (cell.y * this.game.width()) + cell.x;
+        const offset = index * 4;
+        this.imageData.data[offset + 3] = 0; // Set alpha to 0 (fully transparent)
+    }
+
+
+}