79 lines
2.4 KiB
C#
79 lines
2.4 KiB
C#
#region Copyright & License Information
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/*
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* Copyright 2007,2009,2010 Chris Forbes, Robert Pepperell, Matthew Bowra-Dean, Paul Chote, Alli Witheford.
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* This file is part of OpenRA.
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*
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* OpenRA is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* OpenRA is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with OpenRA. If not, see <http://www.gnu.org/licenses/>.
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*/
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#endregion
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using System;
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using System.Collections.Generic;
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using OpenRA.Traits;
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namespace OpenRA.Mods.RA
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{
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class CrateSpawnerInfo : TraitInfo<CrateSpawner>
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{
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public readonly int Minimum = 1; // Minumum number of crates
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public readonly int Maximum = 255; // Maximum number of crates
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public readonly int SpawnInterval = 180; // Average time (seconds) between crate spawn
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public readonly float WaterChance = .2f; // Chance of generating a water crate instead of a land crate
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}
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// assumption: there is always at least one free water cell, and one free land cell.
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class CrateSpawner : ITick
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{
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List<Actor> crates = new List<Actor>();
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int ticks = 0;
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public void Tick(Actor self)
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{
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if (--ticks <= 0)
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{
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var info = self.Info.Traits.Get<CrateSpawnerInfo>();
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ticks = info.SpawnInterval * 25; // todo: randomize
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crates.RemoveAll(c => !c.IsInWorld);
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var toSpawn = Math.Max(0, info.Minimum - crates.Count)
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+ (crates.Count < info.Maximum ? 1 : 0);
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for (var n = 0; n < toSpawn; n++)
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SpawnCrate(self, info);
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}
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}
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const int ChooseCrateLocationAttempts = 100;
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void SpawnCrate(Actor self, CrateSpawnerInfo info)
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{
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var inWater = self.World.SharedRandom.NextDouble() < info.WaterChance;
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for (var n = 0; n < ChooseCrateLocationAttempts; n++)
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{
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var p = self.World.ChooseRandomCell(self.World.SharedRandom);
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if (self.World.IsCellBuildable(p, inWater))
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{
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self.World.AddFrameEndTask(
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w => crates.Add(w.CreateActor("crate", p, self.World.WorldActor.Owner)));
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break;
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}
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}
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}
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}
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}
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