add start of gun support

server/game/room/world/missile.js

@@ -0,0 +1,36 @@
+'use strict';
+
+const Body = require('./bodies.js');
+
+class Missile extends Body {
+	constructor(world, source) {
+		super(world);
+
+		this.source = source;
+		this.player = source.player;
+
+		this.frame = [[[0, 0], [0, 10], [3, 10], [3, 0]]];
+	}
+
+	detonate() {
+		// Blow up stuff.
+		this.world.removeBody(this);
+	}
+
+	packTypeDelta() {
+		return [];
+	}
+
+	packFull() {
+		return {
+			type: 'missile',
+			id: this.id,
+			source: this.source.id,
+			team: this.player.team,
+			frame: this.frame,
+			delta: this.packDelta()
+		};
+	}
+}
+
+module.exports = Projectile;