121 lines
2.5 KiB
TypeScript
121 lines
2.5 KiB
TypeScript
import { WindowMouseEvent } from "https://deno.land/x/dwm@0.3.3/mod.ts";
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import { gameWindow } from "./window.ts";
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export const M = {
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NONE: -1,
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LEFT: 0,
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RIGHT: 1,
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MIDDLE: 2,
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}
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const mouseButtonsDown = {
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[M.LEFT]: false,
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[M.RIGHT]: false,
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[M.MIDDLE]: false,
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};
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type MouseEventType = "click" | "down" | "up" | "move" | "dblclick";
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const mouseEvents: Array<{
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type: MouseEventType,
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button: typeof M[keyof typeof M],
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x: number,
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y: number,
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prevX?: number,
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prevY?: number
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}> = [];
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let mouseX = 0;
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let mouseY = 0;
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const eventPixelCoords = (evt: WindowMouseEvent) => {
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const {width, height} = gameWindow.size;
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const min = Math.min(width, height);
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const pixX = Math.floor(128*(evt.clientX-(width-min)/2)/min);
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const pixY = Math.floor(128*(evt.clientY-(height-min)/2)/min);
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if (pixX < 0 || pixX > 128 || pixY < 0 || pixY > 128) {
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return null;
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}
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return {
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x: pixX,
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y: pixY,
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}
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}
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const pushEvent = (type: MouseEventType, evt: WindowMouseEvent, extra?: Partial<typeof mouseEvents[0]>) => {
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const coords = eventPixelCoords(evt);
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if (!coords) {
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return
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}
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mouseEvents.push({type, button: evt.button, ...coords, ...(extra ?? {})});
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}
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const evtInBounds = (evt: WindowMouseEvent) => {
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return !!eventPixelCoords(evt);
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}
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addEventListener("dblclick", (evt) => {
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pushEvent("dblclick", evt);
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});
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addEventListener("click", (evt) => {
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pushEvent("click", evt);
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});
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addEventListener("mousedown", (evt) => {
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if (evtInBounds(evt)) {
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mouseButtonsDown[evt.button] = true;
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}
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pushEvent("down", evt);
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});
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addEventListener("mouseup", (evt) => {
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if (evtInBounds(evt)) {
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mouseButtonsDown[evt.button] = false;
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}
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pushEvent("up", evt);
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});
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addEventListener("mousemove", (evt) => {
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const coords = eventPixelCoords(evt);
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pushEvent("up", evt, {prevX: mouseX, prevY: mouseY});
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if (coords) {
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mouseX = coords.x;
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mouseY = coords.y;
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}
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});
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export const mousePos = () => {
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return {
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x: mouseX,
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y: mouseY,
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}
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}
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export const getMouseX = () => {
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return mouseX;
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}
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export const getMouseY = () => {
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return mouseY;
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}
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export const refreshMouse = () => {
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mouseEvents.length = 0;
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}
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export const mouseDown = (button: number = M.LEFT) => {
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return mouseEvents.some(ev => ev.button === button && ev.type === "down");
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}
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export const mouseClick = (button: number = M.LEFT) => {
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return mouseEvents.some(ev => ev.button === button && ev.type === "click");
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}
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export const mouseDoubleClick = (button: number = M.LEFT) => {
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return mouseEvents.some(ev => ev.button === button && ev.type === "dblclick");
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}
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export const mouseHeld = (button: number = M.LEFT) => {
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return mouseButtonsDown[button];
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} |