Make some schnecken

src/common/vec.ts

@@ -164,13 +164,13 @@ export class Vec {
     distance(x: number, y: number): number;
     distance(x: number|Vec, y?: number): number {
         if (x instanceof Vec) {
-            return this.sub(x).length();
+            return Math.sqrt((this.x - x.x) * (this.x - x.x) + (this.y - x.y) * (this.y - x.y));
         }
         if (undefined === y) {
             throw new Error("y-coordinate undefined on vector operation");
         }
 
-        return this.sub(x, y).length();
+        return Math.sqrt((this.x - x) * (this.x - x) + (this.y - y) * (this.y - y));
     }
 
     rotate(angle: number) {

src/env.d.ts

@@ -0,0 +1 @@
+declare module "*.png";

src/game/fluids/fluids.ts

@@ -9,6 +9,7 @@ const gravity = 0.008;
 const numParticles = 200;
 const pressureForce = 8000;
 export const particleSize = 10;
+export const imageSize = 64;
 export const desiredDensity = 6;
 const densityRadius = 40;
 const mass = 1;

src/game/swarm/agent.ts

@@ -1,11 +1,13 @@
 import { Canvas } from "@/canvas";
 import { GameObject } from "@/common/gameobject";
 import { Vec } from "@/common/vec";
-import { particleSize } from "@/game/fluids/fluids";
+import { imageSize, particleSize } from "@/game/fluids/fluids";
 import { Swarm } from "@/game/swarm/swarm";
-import { fillCircle, strokeCircle, strokeLine } from "@/graphics";
+import { drawImageRotated, fillCircle, strokeCircle, strokeLine } from "@/graphics";
-
+import Schnecke from "@/assets/schnecke.png";
 
+const schneckenImage = new Image();
+schneckenImage.src = Schnecke;
 export type NavigationType = 'stayInBounds' | 'doNotBumpIntoFlock' | 'keepFlockClose' | 'behaveLikeFlockDoes' | 'idling';
 export type NavigatingDesire = {
     pos: Vec;
@@ -117,14 +119,20 @@ export class Agent extends GameObject {
 
     doNotBumpIntoFlock(nextPos: Vec): NavigatingDesire {
         const {agents} = this.swarm;
-        const visibleAgentsNotMe = agents
+        const visibleAgentsInBounds = [];
-            .filter(a => a.pos.distance(this.pos) < this.swarm.config.flockPerceptionDistance && a !== this);
-        const visibleAgentsInBounds = visibleAgentsNotMe
-            .filter(a => this.swarm.rect.contains(a.pos));
         let closestAgent: Agent|null = null;
-        for (const a of visibleAgentsInBounds) {
+        let closestDist: number = Infinity;
-            if (!closestAgent || a.pos.distance(this.pos) < closestAgent.pos.distance(this.pos)) {
+        for (const a of agents) {
+            const dist = a.pos.distance(this.pos);
+            if (!this.swarm.rect.contains(a.pos)
+                || dist >= this.swarm.config.flockPerceptionDistance
+                || a === this) {
+                continue;
+            }
+            visibleAgentsInBounds.push(a);
+            if (!closestAgent || dist < closestDist) {
                 closestAgent = a;
+                closestDist = dist;
             }
         }
         if (!closestAgent) {
@@ -135,7 +143,7 @@ export class Agent extends GameObject {
             };
         }
         const awayFromClosestAgentDir = this.pos.sub(closestAgent.pos).normalize();
-        const urgency = Math.max(0, (this.swarm.config.desiredDistanceToEveryone - closestAgent.pos.distance(this.pos)) / this.swarm.config.desiredDistanceToEveryone);
+        const urgency = Math.max(0, (this.swarm.config.desiredDistanceToEveryone - closestDist) / this.swarm.config.desiredDistanceToEveryone);
         return {
             pos: this.pos.add(awayFromClosestAgentDir),
             urgency: urgency * urgency,
@@ -145,10 +153,9 @@ export class Agent extends GameObject {
 
     keepFlockClose(nextPos: Vec): NavigatingDesire {
         const {agents} = this.swarm;
-        const visibleAgents = agents
+        const visibleAgentsInBounds = agents
+            .filter(a => this.swarm.rect.contains(a.pos))
             .filter(a => a.pos.distance(this.pos) < this.swarm.config.flockPerceptionDistance);
-        const visibleAgentsInBounds = visibleAgents
-            .filter(a => this.swarm.rect.contains(a.pos));
         const center = visibleAgentsInBounds
             .reduce((sum, a) => sum.add(a.pos), new Vec)
             .scale(1 / visibleAgentsInBounds.length);
@@ -203,18 +210,28 @@ export class Agent extends GameObject {
     }
 
     render({ctx, input}: Canvas) {
-        if (input.mouseDown) {
+        if (this === this.swarm.selectedAgent) {
+            console.log(this.dir.clockwiseAngleBetween(1, 0));
+        }
+        if (this.swarm.config.renderStyle === 'image') {
+            const satisfaction = Math.floor(this.satisfaction());
+            const dissatisfaction = 255 - satisfaction;
+            // draw color
+            ctx.filter = `hue-rotate(${satisfaction}deg) saturate(1000%)`;
+
+            // set composite mode
+            drawImageRotated(ctx, schneckenImage, -this.dir.clockwiseAngleBetween(1, 0), this.pos.x, this.pos.y, imageSize, imageSize);
+            ctx.filter = `none`;
+        } else if (input.mouseDown) {
             fillCircle(ctx, this.pos, particleSize, 'gray');
-        } else {
+        } else if (this.swarm.config.renderStyle === 'satisfaction') {
-            if (this.swarm.config.renderStyle === 'satisfaction') {
             const satisfaction = this.satisfaction();
             const dissatisfaction = 255 - satisfaction;
             fillCircle(ctx, this.pos, particleSize, `rgb(${dissatisfaction}, 0, ${satisfaction})`);
-            } else {
+        } else if (this.swarm.config.renderStyle === 'navigationMode') {
             const color = navigationColorMap[this.lastNavigation.type];
             fillCircle(ctx, this.pos, particleSize, color);
         }
-        }
         if (this.swarm.config.showDirections) {
             strokeLine(ctx, this.pos, this.pos.add(this.dir.scale(30)));
         }

src/game/swarm/swarm.ts

@@ -6,7 +6,7 @@ import { Agent } from "@/game/swarm/agent";
 import { strokeCircle } from "@/graphics";
 import Button from "@/ui/button";
 
-export type RenderStyle = 'satisfaction'|'navigationMode';
+export type RenderStyle = 'satisfaction'|'navigationMode'|'image';
 
 export class Config {
     numAgents: number =  20;
@@ -15,7 +15,7 @@ export class Config {
     idlingUrgency: number =  0.001;
     idlingDistance: number =  20;
     desiredDistanceToEveryone: number =  50;
-    renderStyle: RenderStyle =  'satisfaction';
+    renderStyle: RenderStyle =  'image';
     showDirections: boolean =  false;
     showFlockCenter: boolean =  false;
     flockPerceptionDistance: number =  100;
@@ -64,15 +64,23 @@ export class Swarm extends GameObject {
         const buttons = [
             new Button("Reset", Rect.bySize(new Vec(10, 10), buttonSize), () => this.init(canvas)),
             new Button("Toggle Colors", Rect.bySize(new Vec(110, 10), buttonSize), () => {
-                this.config.renderStyle = this.config.renderStyle === 'satisfaction' ? 'navigationMode' : 'satisfaction';
+                const styles: RenderStyle[] = ['satisfaction', 'navigationMode', 'image'];
+                this.config.renderStyle = styles[(styles.indexOf(this.config.renderStyle) + 1) % styles.length];
             }),
             new Button("Less Agents", Rect.bySize(new Vec(10, 60), buttonSize), () => {
-                this.config.numAgents -= Math.max(1, this.config.numAgents / 10);
+                const agentsToRemove = Math.max(1, this.config.numAgents / 10);
-                this.init(canvas);
+                this.agents.splice(-agentsToRemove, agentsToRemove).forEach(a => canvas.remove(a));
+                this.config.numAgents -= agentsToRemove;
             }),
             new Button("More Agents", Rect.bySize(new Vec(110, 60), buttonSize), () => {
-                this.config.numAgents += Math.max(1, this.config.numAgents / 10);
+                const agentsToAdd = Math.max(1, this.config.numAgents / 10);
-                this.init(canvas);
+                for (let i = 0; i < agentsToAdd; i++) {
+                    const pos = Vec.random(this.rect);
+                    const agent = new Agent(pos, this);
+                    this.agents.push(agent);
+                    canvas.add(agent);
+                }
+                this.config.numAgents += agentsToAdd;
             }),
             new Button("toggle Directions", Rect.bySize(new Vec(10, 110), buttonSize), () => {
                 this.config.showDirections = !this.config.showDirections;
@@ -101,6 +109,11 @@ export class Swarm extends GameObject {
     }
 
     update(canvas: Canvas, delta: DOMHighResTimeStamp) {
+        if (canvas.input.keypressed('Escape')) {
+            canvas.camera.reset();
+            canvas.camera.unlock();
+            this.selectedAgent = null;
+        }
     }
 
     render(canvas: Canvas) {

src/graphics.ts

@@ -9,12 +9,12 @@ export function drawImageRotated(
     y: number,
     w: number,
     h: number,
-    x2: number,
+    x2?: number,
-    y2: number,
+    y2?: number,
-    w2: number,
+    w2?: number,
-    h2: number,
+    h2?: number,
 ) {
-    if (typeof h2 !== "undefined") {
+    if (typeof x2 !== "undefined" && typeof h2 !== "undefined" && typeof w2 !== "undefined" && typeof y2 !== "undefined") {
         ctx.translate(x2, y2);
         ctx.rotate(angle);
         ctx.drawImage(img, x, y, w, h, -w2 / 2, -h2 / 2, w2, h2);

webpack.config.js

@@ -36,9 +36,13 @@ const config = {
         use: [stylesHandler, "css-loader"],
       },
       {
-        test: /\.(eot|svg|ttf|woff|woff2|png|jpg|gif)$/i,
+        test: /\.(eot|svg|ttf|woff|woff2|jpg|gif)$/i,
         type: "asset",
       },
+      {
+        test: /\.(png)$/i,
+        type: "asset/inline",
+      },
 
       // Add your rules for custom modules here
       // Learn more about loaders from https://webpack.js.org/loaders/