Repterra Web — full game: base building, power grid, taming & breeding, aquatic raiders, day/night, save/load

- Isometric canvas RTS vs dinosaur waves (fan demake of Repterra) - Economy: houses/taxes, farms, foresters, quarries; colonist staffing - Power grid: generators extend build range; brownout + recovery - Defense: walls/gates, watchtowers (AA), cannon towers (ground-only) - Taming: Primal Pen + Tamers collar weakened dinos; pets obey commands - Breeding: tamed pairs incubate eggs at the pen; hatchlings grow up - 7 dino species incl. flying Pteranodons and lake-raiding Suchomimus - Telegraphed waves with direction arrows; day-15 final horde; 3 difficulties - Day/night cycle, fog of war, minimap, synth audio, 1x-3x speeds - Save/Load/Continue + dawn autosave (full JSON state snapshots) - Tests: 80-assertion headless suite, browser boot + E2E, balance harness
2026-08-23 07:00:23 +00:00
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+/* =========================================================
+ * REPRTERRA WEB — entities.js
+ * Factories & shared helpers for buildings/units/dinos.
+ * ========================================================= */
+'use strict';
+window.RTS = window.RTS || {};
+
+RTS.entities = (function () {
+  const U = RTS.util;
+  let nextId = 1;
+
+  const E = {};
+  E.resetIds = () => { nextId = 1; };
+  // after loading a save, keep new ids above everything deserialized
+  E.setIdFloor = (n) => { if (n >= nextId) nextId = n + 1; };
+
+  // ---------- footprint ----------
+  // returns [x0,y0] of top-left tile for a building centered at cx,cy
+  E.footOrigin = function (cx, cy, size) {
+    return [Math.round(cx - size / 2), Math.round(cy - size / 2)];
+  };
+
+  // ---------- buildings ----------
+  E.makeBuilding = function (defId, cx, cy, opts) {
+    const C = RTS.CONFIG;
+    const def = C.BUILDINGS[defId];
+    const instant = opts && opts.instant;
+    const b = {
+      kind: 'building',
+      id: nextId++,
+      defId,
+      name: def.name,
+      size: def.size,
+      x: Math.round(cx), y: Math.round(cy),   // center tile coords
+      hp: instant ? def.hp : def.hp * 0.15,
+      maxHp: def.hp,
+      done: !!instant,
+      progress: instant ? 1 : 0,
+      buildTime: instant ? 0 : 2.5 + def.size * 2.5,
+      workersNeed: def.workers || 0,
+      workers: 0,
+      powered: true,
+      active: true,          // production on/off
+      cool: 0,               // tower fire cooldown
+      trainQ: [],            // barracks queue [{t, unit}]
+      trainT: 0,
+      rallyX: null, rallyY: null,
+      burnT: 0,
+    };
+    return b;
+  };
+
+  // ---------- human units ----------
+  E.makeUnit = function (unitId, x, y) {
+    const C = RTS.CONFIG;
+    const def = C.UNITS[unitId];
+    const simSt = (RTS.sim && RTS.sim.state) ? RTS.sim.state() : null;
+    const armorLvl = (simSt && simSt.upgrades) ? simSt.upgrades.armor || 0 : 0;
+    const hp = def.hp * (1 + 0.25 * armorLvl);
+    return {
+      kind: 'unit',
+      id: nextId++,
+      unitId,
+      name: def.name,
+      x, y,
+      hp, maxHp: hp,
+      speed: def.speed,
+      cool: 0,
+      path: null, pathI: 0,
+      tx: null, ty: null,          // move goal
+      attackMove: false,
+      targetId: 0,                 // focused enemy
+      selected: false,
+      facing: U.rng() * Math.PI * 2,
+      animT: U.rng() * 10,
+      dead: false,
+    };
+  };
+
+  // ---------- dinosaurs ----------
+  E.makeDino = function (dinoId, x, y, mode, home) {
+    const C = RTS.CONFIG;
+    const def = C.DINOS[dinoId];
+    const rng = U.rng;
+    return {
+      kind: 'dino',
+      id: nextId++,
+      dinoId,
+      name: def.name,
+      x, y,
+      hp: def.hp, maxHp: def.hp,
+      dmg: def.dmg,
+      rof: def.rof,
+      speed: def.speed * rng.range(0.9, 1.12),
+      r: def.r,
+      flying: !!def.flying,
+      amphibious: !!def.amphibious,
+      ranged: def.ranged || 0,
+      bldMult: def.bldMult || 1,
+      bounty: def.bounty,
+      scale: def.scale,
+      color: def.color,
+      mode: mode || 'wave',          // 'roam' | 'wave' | 'final'
+      homeX: home ? home.x : x, homeY: home ? home.y : y,
+      targetId: 0, targetType: '',
+      path: null, pathI: 0,
+      repathT: 0,
+      stuckT: 0,
+      lastDist: Infinity,
+      cool: 0,
+      facing: rng() * Math.PI * 2,
+      animT: rng() * 10,
+      wanderT: 0,
+      wx: x, wy: y,
+      aggro: !!(mode === 'wave'),
+      dead: false,
+      hitFlash: 0,
+    };
+  };
+
+  // ---------- projectiles ----------
+  E.makeProj = function (type, x, y, tx, ty, opts) {
+    return {
+      kind: 'proj',
+      id: nextId++,
+      type,           // 'bullet' | 'shell' | 'spit'
+      x, y, z: opts && opts.z != null ? opts.z : 8,
+      tx, ty,
+      speed: opts && opts.speed || 14,
+      dmg: opts && opts.dmg || 5,
+      aoe: opts && opts.aoe || 0,
+      air: !!(opts && opts.air),
+      fromPlayer: !(opts && opts.enemy),
+      color: opts && opts.color || '#ffd76a',
+      trail: [],
+      arc: opts && opts.arc || 0,     // lob height for shells/spits
+      t: 0, total: 1,
+    };
+  };
+
+  return E;
+})();