69 lines
1.9 KiB
JavaScript
69 lines
1.9 KiB
JavaScript
import { globalConfig } from "../../core/config";
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import { smoothenDpi } from "../../core/dpi_manager";
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import { DrawParameters } from "../../core/draw_parameters";
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import { types } from "../../savegame/serialization";
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import { BaseItem, enumItemType } from "../base_item";
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export class PositiveEnergyItem extends BaseItem {
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static getId() {
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return "positive_energy";
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}
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static getSchema() {
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return types.uint;
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}
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serialize() {
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return 0;
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}
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deserialize(data) {}
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getItemType() {
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return enumItemType.positiveEnergy;
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}
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constructor() {
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super();
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this.bufferGenerator = null;
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}
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/**
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* @param {number} x
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* @param {number} y
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* @param {number} size
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* @param {DrawParameters} parameters
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*/
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draw(x, y, parameters, size = 12) {
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if (!this.bufferGenerator) {
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this.bufferGenerator = this.internalGenerateBuffer.bind(this);
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}
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const dpi = smoothenDpi(globalConfig.shapesSharpness * parameters.zoomLevel);
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const key = size + "/" + dpi;
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const canvas = parameters.root.buffers.getForKey(key, "", size, size, dpi, this.bufferGenerator);
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parameters.context.drawImage(canvas, x - size / 2, y - size / 2, size, size);
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}
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/**
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* @param {HTMLCanvasElement} canvas
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* @param {CanvasRenderingContext2D} context
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* @param {number} w
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* @param {number} h
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* @param {number} dpi
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*/
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internalGenerateBuffer(canvas, context, w, h, dpi) {
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context.translate((w * dpi) / 2, (h * dpi) / 2);
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context.scale((dpi * w) / 12, (dpi * h) / 12);
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context.fillStyle = "#e84a4a";
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context.strokeStyle = "#eee";
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context.lineWidth = 1;
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context.beginCircle(0, 0, 5);
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context.fill();
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context.stroke();
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}
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}
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export const POSITIVE_ENERGY_ITEM_SINGLETON = new PositiveEnergyItem();
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