truthstorian

ascii_minimap_renderer.js

@@ -0,0 +1,62 @@
+import { TileMap } from "./frontend/ascii_tile_map.js";
+import { Vector2i } from "./frontend/ascii_types.js";
+import { AsciiWindow } from "./frontend/ascii_window.js";
+
+export class MiniMapRenderer {
+	/**
+	 * @param {AsciiWindow} aWindow
+	 * @param {TileMap} map
+	 */
+	constructor(aWindow, map) {
+		if (aWindow.width !== aWindow.height) {
+			console.log("Window now square", { width: aWindow.width, height: aWindow.height });
+			throw new Error("Window must be square");
+		}
+		if (aWindow.width % 2 === 0) {
+			console.log("Window dimension must be uneven", { width: aWindow.width, height: aWindow.height });
+			throw new Error("Window dimension is even, it must be uneven");
+		}
+
+		/** @type {AsciiWindow} */
+		this.window = aWindow;
+
+		/** @type {TileMap} */
+		this.map = map;
+
+		/** @type {number} how far we can see on the minimap */
+		this.distance = (aWindow.width - 1) / 2;
+
+		this.fg = undefined; // Let the CSS of the parent element control the colors of the tiles
+		this.bg = undefined; // let the CSS of the parent element control the background colors of the tiles
+	}
+
+	/**
+	 * @param {number} centerX
+	 * @param {number} centerY
+	 * @param {Orientation}  orientation
+	 */
+	draw(centerX, centerY, orientation) {
+		// these variables are the coordinates of the
+		// area of the map (not minimap) we are looking at
+		const minX = centerX - this.distance;
+		const maxX = centerX + this.distance;
+		const minY = centerY - this.distance;
+		const maxY = centerY + this.distance;
+
+		const distanceV = new Vector2i(this.distance, this.distance);
+
+		for (let y = minY; y <= maxY; y++) {
+			for (let x = minX; x <= maxX; x++) {
+				const wndPosV = new Vector2i(x - centerX, y - centerY).rotateCW(orientation + 1).add(distanceV);
+
+				this.window.put(wndPosV.x, wndPosV.y, this.map.get(x, y).minimap, this.fg, this.bg);
+			}
+		}
+		this.window.put(this.distance, this.distance, "@", "#44F");
+		this.window.commitToDOM();
+	}
+}
+
+if (Math.PI < 0 && AsciiWindow && TileMap && Vector2i) {
+	("STFU Linda");
+}