mirror of
https://hacklab.nilfm.cc/felt
synced 2024-10-22 14:31:48 +00:00
142 lines
No EOL
3.4 KiB
JavaScript
142 lines
No EOL
3.4 KiB
JavaScript
let map = null;
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let mapImg = null;
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let tokens = [];
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const worldBounds = [[180, -180],[-180, 180]];
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function initializeMap(mapImgUrl) {
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let init = false;
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if (!map) {
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init = true;
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map = L.map('map', { minZoom: 0, maxZoom: 4, crs: L.CRS.Simple, attributionControl: false, zoomControl: false });
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map.on("zoomend", ()=>{resizeMarkers();scaleSpritePreview();scaleAltSpritePreview();});
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}
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if (mapImg) {
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mapImg.removeFrom(map);
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}
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mapImg = L.imageOverlay(mapImgUrl, worldBounds);
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mapImg.addTo(map);
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map.setMaxBounds(worldBounds);
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if (init) {
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map.setView([0,0], 2);
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}
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}
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// this works but assumes the map is square (reasonable limitation I think)
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function resizeMarkers() {
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tokens.forEach(t=>{
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const icon = t.m.options.icon;
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const scaleFactor = mapImg._image.clientWidth / mapImg._image.naturalWidth;
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icon.options.iconSize = [scaleFactor * t.t.w, scaleFactor * t.t.h];
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icon.options.iconAnchor = [scaleFactor * t.t.oX, scaleFactor * t.t.oY];
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t.m.setIcon(icon);
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});
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}
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function processTokens(tokenChanges) {
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for (const t of tokenChanges) {
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const i = tokens.findIndex(tk=>tk.t.id == t.id);
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if (i >= 0) {
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const self = tokens[i];
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// token was made active
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if (t.x != null && t.y != null && !self.t.active && t.active) {
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self.t.active = true;
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self.m.addTo(map);
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// token was made inactive
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} else if (t.x != null && t.y != null && self.t.active && !t.active) {
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self.t.active = false;
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self.m.removeFrom(map);
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// token was destroyed
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} else if (t.x == null && t.y == null) {
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self.m.removeFrom(map);
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tokens.splice(i, 1);
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// token was moved
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} else {
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self.t.x = t.x;
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self.t.y = t.y;
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self.m.setLatLng([t.y, t.x]);
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}
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} else {
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if (t.x != null && t.y != null) {
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const self = NewToken(t);
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tokens.push(self);
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if (t.active) {
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self.m.addTo(map);
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}
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}
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}
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}
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resizeMarkers();
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}
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function toggleActive(tokenId) {
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const existing = tokens.find(t=>t.t.id == tokenId);
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if (existing) {
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const self = Object.assign({}, existing.t);
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self.active = !self.active;
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console.log(self);
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publish({token: self});
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}
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}
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function getCascadingPos() {
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const topLeft = [0,0];
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const n = tokens.length;
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topLeft[1] += (n)*Math.random()*10 - 5;
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topLeft[0] -= (n)*Math.random()*10 - 5;
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return topLeft;
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}
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function moveToken(id) {
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const existing = tokens.find(t=>t.t.id == id);
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if (existing) {
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const self = Object.assign({}, existing.t);
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const realPos = existing.m.getLatLng();
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self.x = realPos.lng;
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self.y = realPos.lat;
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console.log(self);
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publish({token: self});
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}
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}
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function NewToken(token) {
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const marker = L.marker([token.y,token.x], {
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icon: L.icon({
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iconUrl: token.sprite,
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iconSize: [token.w,token.h],
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iconAnchor: [token.oX, token.oY]
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}),
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title: token.name,
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draggable: true,
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autoPan: true
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});
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marker.on("moveend", ()=>{moveToken(token.id)});
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return {
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t: token,
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m: marker,
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};
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}
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function addToken(token) {
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const self = { sz: token.sz, m: L.marker(token.pos, {
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icon: L.icon({
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iconUrl: token.img,
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iconSize: token.sz,
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}),
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title: token.name,
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draggable: true,
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autoPan: true
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})};
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tokens.push(self);
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self.m.addTo(map);
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}
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// token for testing in browser console
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const t = {
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img: "https://nilfm.cc/favicon.png",
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sz: [32,32],
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pos: [0,0],
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name: "test",
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} |