60 lines
2.2 KiB
JavaScript
60 lines
2.2 KiB
JavaScript
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/* ISLE SLINGERS -- physics/rules/index.js (submodule: rules)
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* RC-375D84 S-2 modularization (behavior-neutral split of the original
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* js/core.js monolith). Installs its units into ONE shared physics scope `P`
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* that every physics submodule sees -- the same single-scope semantics the
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* monolith had. Must load before js/physics/index.js (the aggregator that
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* attaches the public ISLE_CORE API). Surface installed: checkEndStates, birdsRemaining, starsFor.
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*/
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(function (root, factory) {
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var part = factory();
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if (typeof module !== 'undefined' && module.exports) module.exports = part;
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else (root.ISLE_PHYSICS_PARTS = root.ISLE_PHYSICS_PARTS || []).push(part);
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})(typeof globalThis !== 'undefined' ? globalThis : this, function () {
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'use strict';
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return function (P) {
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P.checkEndStates = function(g) {
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if (g.status === 'won' || g.status === 'lost') return;
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var alive = 0;
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for (var i = 0; i < g.enemies.length; i++) if (!g.enemies[i].dead) alive++;
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if (g.hadEnemies && alive === 0 && g.launched > 0) {
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g.status = 'won';
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g.wonAt = g.time;
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g.score += P.BIRD_BONUS * P.birdsRemaining(g);
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g.events.push({ type: 'level_won', x: g.camera.x, y: 400 });
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return;
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}
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var b = P.activeBird(g);
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var inFlight = false;
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// S-5: a LANDED bird is still a live body (it can fall, smash, and kill
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// while it exists) -- the level must not be declared lost while one is out
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// in the world.
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var landedOut = false;
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for (var k = 0; k < g.birds.length; k++) {
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if (g.birds[k].state === 'flying') inFlight = true;
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if (g.birds[k].state === 'landed') landedOut = true;
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}
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if (!inFlight && !landedOut && !b && g.status === 'flying') {
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// last bird spent, enemies remain
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g.status = 'lost';
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g.lostAt = g.time;
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g.events.push({ type: 'level_lost', x: g.camera.x, y: 400 });
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}
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}
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P.birdsRemaining = function(g) {
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var n = 0;
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for (var i = 0; i < g.birds.length; i++) if (g.birds[i].state === 'queued') n++;
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return n;
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}
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P.starsFor = function(g) {
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var th = g.level.stars;
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if (!th) return 0;
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if (g.score >= th[2]) return 3;
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if (g.score >= th[1]) return 2;
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if (g.score >= th[0] || g.status === 'won') return 1;
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return 0;
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}
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};
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});
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