109 lines
4.8 KiB
JavaScript
109 lines
4.8 KiB
JavaScript
function ResourceGatherer() {}
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ResourceGatherer.prototype.Schema =
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"<a:help>Lets the unit gather resources from entities that have the ResourceSupply component.</a:help>" +
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"<a:example>" +
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"<MaxDistance>2.0</MaxDistance>" +
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"<BaseSpeed>1.0</BaseSpeed>" +
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"<Rates>" +
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"<food.fish>1</food.fish>" +
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"<metal.ore>3</metal.ore>" +
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"<stone.rock>3</stone.rock>" +
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"<wood.tree>2</wood.tree>" +
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"</Rates>" +
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"</a:example>" +
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"<element name='MaxDistance' a:help='Max resource-gathering distance'>" +
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"<ref name='positiveDecimal'/>" +
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"</element>" +
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"<element name='BaseSpeed' a:help='Base resource-gathering rate (in resource units per second)'>" +
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"<ref name='positiveDecimal'/>" +
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"</element>" +
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"<element name='Rates' a:help='Per-resource-type gather rate multipliers. If a resource type is not specified then it cannot be gathered by this unit'>" +
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"<interleave>" +
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"<optional><element name='food' a:help='Food gather rate (may be overridden by \"food.*\" subtypes)'><ref name='positiveDecimal'/></element></optional>" +
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"<optional><element name='wood' a:help='Wood gather rate'><ref name='positiveDecimal'/></element></optional>" +
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"<optional><element name='stone' a:help='Stone gather rate'><ref name='positiveDecimal'/></element></optional>" +
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"<optional><element name='metal' a:help='Metal gather rate'><ref name='positiveDecimal'/></element></optional>" +
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"<optional><element name='food.fish' a:help='Fish gather rate (overrides \"food\")'><ref name='positiveDecimal'/></element></optional>" +
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"<optional><element name='food.fruit' a:help='Fruit gather rate (overrides \"food\")'><ref name='positiveDecimal'/></element></optional>" +
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"<optional><element name='food.grain' a:help='Grain gather rate (overrides \"food\")'><ref name='positiveDecimal'/></element></optional>" +
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"<optional><element name='food.meat' a:help='Meat gather rate (overrides \"food\")'><ref name='positiveDecimal'/></element></optional>" +
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"<optional><element name='food.milk' a:help='Milk gather rate (overrides \"food\")'><ref name='positiveDecimal'/></element></optional>" +
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"<optional><element name='wood.tree' a:help='Tree gather rate (overrides \"wood\")'><ref name='positiveDecimal'/></element></optional>" +
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"<optional><element name='stone.rock' a:help='Rock gather rate (overrides \"stone\")'><ref name='positiveDecimal'/></element></optional>" +
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"<optional><element name='metal.ore' a:help='Ore gather rate(overrides \"metal\")'><ref name='positiveDecimal'/></element></optional>" +
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"<optional><element name='metal.treasure' a:help='Treasure gather rate(overrides \"metal\")'><ref name='positiveDecimal'/></element></optional>" +
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"</interleave>" +
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"</element>";
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ResourceGatherer.prototype.Init = function()
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{
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};
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ResourceGatherer.prototype.GetGatherRates = function()
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{
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var ret = {};
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for (var r in this.template.Rates)
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ret[r] = this.template.Rates[r] * this.template.BaseSpeed;
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return ret;
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};
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ResourceGatherer.prototype.GetRange = function()
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{
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return { "max": +this.template.MaxDistance, "min": 0 };
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// maybe this should depend on the unit or target or something?
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}
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/**
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* Gather from the target entity. This should only be called after a successful range check,
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* and if the target has a compatible ResourceSupply.
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* It should be called at a rate of once per second.
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*/
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ResourceGatherer.prototype.PerformGather = function(target)
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{
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var rate = this.GetTargetGatherRate(target);
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if (!rate)
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return { "exhausted": true };
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var cmpResourceSupply = Engine.QueryInterface(target, IID_ResourceSupply);
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var type = cmpResourceSupply.GetType();
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var status = cmpResourceSupply.TakeResources(rate);
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// Give the gathered resources to the player
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var cmpPlayerManager = Engine.QueryInterface(SYSTEM_ENTITY, IID_PlayerManager);
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var cmpOwnership = Engine.QueryInterface(this.entity, IID_Ownership);
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var cmpPlayer = Engine.QueryInterface(cmpPlayerManager.GetPlayerByID(cmpOwnership.GetOwner()), IID_Player);
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cmpPlayer.AddResource(type.generic, status.amount);
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// Tell the target we're gathering from it
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Engine.PostMessage(target, MT_ResourceGather,
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{ "entity": target, "gatherer": this.entity });
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return status;
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};
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/**
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* Compute the amount of resources collected per second from the target.
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* Returns 0 if resources cannot be collected (e.g. the target doesn't
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* exist, or is the wrong type).
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*/
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ResourceGatherer.prototype.GetTargetGatherRate = function(target)
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{
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var cmpResourceSupply = Engine.QueryInterface(target, IID_ResourceSupply);
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if (!cmpResourceSupply)
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return 0;
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var type = cmpResourceSupply.GetType();
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var rate;
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if (type.specific && this.template.Rates[type.generic+"."+type.specific])
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rate = this.template.Rates[type.generic+"."+type.specific];
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else
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rate = this.template.Rates[type.generic];
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return (rate || 0) * this.template.BaseSpeed;
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}
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Engine.RegisterComponentType(IID_ResourceGatherer, "ResourceGatherer", ResourceGatherer);
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