Press n or j to go to the next uncovered block, b, p or k for the previous block.
| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 | 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 3x 3x 1x 1x 2x 10x 10x 10x 10x 10x 10x 10x 10x 10x 2x 2x 1x | import { random } from "@jga/algorithms";
import { ComponentName, isPositionComponent, isSpreadComponent } from "../components";
import { Entity } from "../entities";
import { World } from "../world";
import { System } from "./system";
export class SpreadSystem extends System {
public constructor(entities: Map<string, Entity>) {
super(entities, [ComponentName.SPREAD, ComponentName.POSITION]);
}
public run(world: World): void {
return this.entities.forEach((entity): void => {
const spreadComponent = entity.getComponent(ComponentName.SPREAD);
const positionComponent = entity.getComponent(ComponentName.POSITION);
if (
isSpreadComponent(spreadComponent) &&
isPositionComponent(positionComponent) &&
spreadComponent.getRemainingGrowth() > 0 &&
random(0, 100) <= 10
) {
// Generate the coordinates of a random adjacent square by
// generating an offset between [-1, 0, 1] for both the x and
// y directions. To do this, we generate a number from 0-2 and then
// subtract 1.
const xOffset = random(0, 2) - 1;
const yOffset = random(0, 2) - 1;
const xSpread = positionComponent.getPosition().x + xOffset;
const ySpread = positionComponent.getPosition().y + yOffset;
// Make sure we aren't trying to spawn on the same tile as us
if ((xOffset !== 0 || yOffset !== 0) && world.isEmptyFloor({ x: xSpread, y: ySpread })) {
// Check if we can actually spawn at that location, and if so
// then we grow!
// eslint-disable-next-line @typescript-eslint/no-explicit-any
const spreadEntity = world
.getEntityFactory()
.create(
`${entity.getId()}-spread-${spreadComponent.getRemainingGrowth()}`,
spreadComponent.getSpreadedName(),
);
const spreadEntityPosition = spreadEntity.getComponent(ComponentName.POSITION);
if (isPositionComponent(spreadEntityPosition)) {
spreadEntityPosition.setPosition({
x: xSpread,
y: ySpread,
});
}
const spreadEntitySpread = spreadEntity.getComponent(ComponentName.SPREAD);
if (isSpreadComponent(spreadEntitySpread)) {
spreadEntitySpread.spread();
}
world.addEntity(spreadEntity);
}
}
});
}
}
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