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1 | function calculateArrow(x1, x2, y1, y2) { | |
2 | var deg = -90; | |
3 | var dist_x = x1 - x2; | |
4 | var dist_y = Math.abs(y1 - y2); | |
5 | if (dist_y != 0) { | |
6 | deg = Math.atan(dist_x / dist_y); | |
7 | } | |
8 | if (y2 < y1) { | |
9 | deg = -1 * ((deg + Math.PI) % (2 * Math.PI)); | |
10 | } | |
11 | return deg * 360 / (2 * Math.PI); | |
12 | } | |
13 | ||
14 | function renderRadar() { | |
15 | var mindist = 10000000000; | |
16 | var closest; | |
17 | var remainingFound = false; | |
18 | for (var S = 0; S < explorer.objects.length; S++) { | |
19 | var I = explorer.objects[S]; | |
20 | if (!I.got) { | |
21 | remainingFound = true; | |
22 | var dist = distance(explorer.pos.x, explorer.pos.y, I.x1, I.y1); | |
23 | if (dist < mindist) { | |
24 | mindist = dist; | |
25 | closest = I; | |
26 | } | |
27 | } | |
28 | } | |
29 | if (!remainingFound) { | |
30 | document.getElementById("radar").innerHTML = "You found all coins!"; | |
31 | return; | |
32 | } | |
33 | var indicator = ""; | |
34 | var deg = calculateArrow(closest.x1, explorer.pos.x, closest.y1, explorer.pos.y); | |
35 | var dist_x = Math.abs(closest.x1 - explorer.pos.x); | |
36 | var dist_y = Math.abs(closest.y1 - explorer.pos.y); | |
37 | if (closest.x1 < explorer.pos.x) { | |
38 | indicator += ((dist_x < 500)?"slightly ":"") + "left"; | |
39 | } | |
40 | if (closest.x1 > explorer.pos.x) { | |
41 | indicator += ((dist_x < 500)?"slightly ":"") + "right"; | |
42 | } | |
43 | if (closest.y1 < explorer.pos.y) { | |
44 | indicator += ((dist_y < 500)?"slightly ":"") + " up"; | |
45 | } | |
46 | if (closest.y1 > explorer.pos.y) { | |
47 | indicator += ((dist_y < 500)?"slightly ":"") + " down"; | |
48 | } | |
49 | document.getElementById("radar").innerHTML = "Distance: " + mindist.toFixed(1).toString() + "<br/><div id=\"indic\" style=\"transform: rotate(" + deg + "deg)\" title=\"indicator\">↑</div>"; | |
50 | } | |
51 | setInterval(renderRadar, 100); |