silphius/app/ecs/systems/plant-growth.js

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import {System} from '@/ecs/index.js';
export default class PlantGrowth extends System {
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frequency = 1;
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static queries() {
return {
default: ['Plant'],
};
}
tick(elapsed) {
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const variance = Math.random() * 0.4 + 0.8
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for (const {Plant} of this.select('default')) {
if (65535 === Plant.growth || !Plant.mayGrow()) {
continue;
}
const stage = Math.floor(Plant.stage);
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const growthFactor = (((Plant.growthFactor + 1) / 256) * 0.4 + 0.8) * variance
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Plant.growth = Math.min(
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Plant.growth + ((growthFactor * elapsed) / Plant.stages[stage]) * 65535,
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65535,
);
if (65535 === Plant.growth) {
Plant.grow();
}
}
}
}