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tsgames/src/common/rpg/systems/render/text.ts

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TypeScript

import { TextRegion, TextDisplay } from "@common/display/text";
import { Position } from "@common/rpg/components/position";
import { getViewport } from "@common/rpg/components/render/viewport";
import { Hidden, Sprite } from "@common/rpg/components/sprite";
import { System, World } from "@common/rpg/core/world";
import { Resources } from "@common/rpg/utils/resources";
export class TextDisplaySystem extends System {
public readonly display: TextDisplay;
constructor(display: TextDisplay);
constructor(width?: number, height?: number);
constructor(displayOrWidth?: TextDisplay | number, height?: number) {
super();
this.display = displayOrWidth instanceof TextDisplay ? displayOrWidth : new TextDisplay(displayOrWidth, height);
}
override update(world: World) {
const viewport = getViewport(world);
const offset = viewport ? {
x: viewport.worldX - viewport.screenX,
y: viewport.worldY - viewport.screenY,
} : { x: 0, y: 0 };
const sprites = Array.from(world.query(Sprite, Position))
.sort((a, b) => Number(a[2].absolute) - Number(b[2].absolute) || a[2].z - b[2].z);
for (const [e, sprite, pos] of sprites) {
if (e.has(Hidden)) continue;
const image = sprite.image;
const { x, y, absolute } = pos;
const data =
Resources.get(TextRegion, image)
?? Resources.get(String, image)
?? image;
const region = data instanceof TextRegion ? data : new TextRegion(data);
if (absolute) {
this.display.setRegion(x, y, region);
} else {
const clipRect = this.display.getClipRect();
if (viewport) {
this.display.setClipRect({ x: viewport.screenX, y: viewport.screenY, width: viewport.width, height: viewport.height });
}
this.display.setRegion(x - offset.x, y - offset.y, region);
this.display.setClipRect(clipRect);
}
}
this.display.update();
}
}