feat: add grid

src/App.tsx

@@ -1,3 +1,4 @@
+import { SettingsProvider } from "./context/SettingsContext";
 import { TexturesProvider } from "./context/TexturesContext";
 import { ToolProvider } from "./context/ToolContext";
 
@@ -7,6 +8,7 @@ import Canvas from "./components/Canvas";
 
 function App() {
 	return (
+		<SettingsProvider>
 			<TexturesProvider>
 				<ToolProvider>
 					<main className="h-screen grid grid-rows-[2.5rem_1fr] grid-cols-[2.5rem_1fr]">
@@ -16,6 +18,7 @@ function App() {
 					</main>
 				</ToolProvider>
 			</TexturesProvider>
+		</SettingsProvider>
 	);
 }
 

src/components/Canvas.tsx

@@ -2,10 +2,12 @@ import React, { useCallback, useContext, useEffect, useMemo, useRef, useState }
 import { Container, Stage } from "@pixi/react";
 import * as PIXI from "pixi.js";
 
+import { SettingsContext } from "@/context/SettingsContext";
 import { ToolContext } from "@/context/ToolContext";
 import { TexturesContext } from "@/context/TexturesContext";
 
 import Blocks from "./Blocks";
+import Grid from "./Grid";
 import Cursor from "./Cursor";
 import CursorInformation from "./information/Cursor";
 import CanvasInformation from "./information/Canvas";
@@ -14,11 +16,12 @@ import CanvasInformation from "./information/Canvas";
 PIXI.settings.SCALE_MODE = PIXI.SCALE_MODES.NEAREST;
 
 function Canvas() {
+	const { settings } = useContext(SettingsContext);
 	const { tool, selectedBlock } = useContext(ToolContext);
 	const textures = useContext(TexturesContext);
 
 	const stageContainerRef = useRef<HTMLDivElement>(null);
-	const [stageSize, setStageSize] = useState({ width: 0, height: 0 });
+	const [stageSize, setStageSize] = useState<Dimension>({ width: 0, height: 0 });
 
 	const [coords, setCoords] = useState<Position>({ x: 0, y: 0 });
 	const [scale, setScale] = useState(1);
@@ -136,6 +139,12 @@ function Canvas() {
 					<Blocks blocks={blocks} setBlocks={setBlocks} textures={textures} />
 					<Cursor mouseCoords={mouseCoords} />
 				</Container>
+
+				{settings.grid && (
+					<Container>
+						<Grid stageSize={stageSize} coords={coords} scale={scale} />
+					</Container>
+				)}
 			</Stage>
 
 			<CursorInformation mouseCoords={mouseCoords} blocks={blocks} />

src/components/Grid.tsx

@@ -0,0 +1,32 @@
+import { Graphics } from "@pixi/react";
+
+interface Props {
+	stageSize: Dimension;
+	coords: Position;
+	scale: number;
+}
+
+function Grid({ stageSize, coords, scale }: Props) {
+	return (
+		<Graphics
+			draw={(g) => {
+				g.clear();
+				g.lineStyle(1, 0xffffff, 0.1);
+
+				const tileSize = 16 * scale;
+
+				for (let x = coords.x % tileSize; x < stageSize.width; x += tileSize) {
+					g.moveTo(x, 0);
+					g.lineTo(x, stageSize.height);
+				}
+
+				for (let y = coords.y % tileSize; y < stageSize.height; y += tileSize) {
+					g.moveTo(0, y);
+					g.lineTo(stageSize.width, y);
+				}
+			}}
+		/>
+	);
+}
+
+export default Grid;

src/components/information/Canvas.tsx

@@ -1,4 +1,4 @@
-import React, { useEffect, useMemo, useState } from "react";
+import React, { useMemo } from "react";
 import { Slider } from "@/components/ui/slider";
 
 interface Props {
@@ -22,8 +22,8 @@ function CanvasInformation({ scale, setScale, blocks }: Props) {
 		});
 
 		return {
-			x: maxX - minX,
+			width: maxX - minX,
-			y: maxY - minY,
+			height: maxY - minY,
 		};
 	}, [blocks]);
 
@@ -36,8 +36,8 @@ function CanvasInformation({ scale, setScale, blocks }: Props) {
 			<div className="flex flex-col items-end gap-1">
 				<div className="info-child">{Math.floor(scale * 100)}%</div>
 				<div className="info-child">
-					<span>W: {canvasSize.x} </span>
+					<span>W: {canvasSize.width} </span>
-					<span>H: {canvasSize.y}</span>
+					<span>H: {canvasSize.height}</span>
 				</div>
 			</div>
 

src/context/SettingsContext.tsx

@@ -0,0 +1,24 @@
+import { createContext, ReactNode, useState } from "react";
+
+interface Props {
+	children: ReactNode;
+}
+
+const defaultSettings: Settings = {
+	grid: false,
+};
+
+export const SettingsContext = createContext({
+	settings: defaultSettings,
+	setSetting: <K extends keyof Settings>(key: K, value: Settings[K]) => {},
+});
+
+export const SettingsProvider = ({ children }: Props) => {
+	const [settings, setSettings] = useState<Settings>(defaultSettings);
+
+	const setSetting = <K extends keyof Settings>(key: K, value: Settings[K]) => {
+		setSettings((prev) => ({ ...prev, [key]: value }));
+	};
+
+	return <SettingsContext.Provider value={{ settings, setSetting }}>{children}</SettingsContext.Provider>;
+};

src/types.d.ts

@@ -2,7 +2,12 @@ type Theme = "dark" | "light" | "system";
 
 interface Position {
 	x: number;
-    y: number
+	y: number;
+}
+
+interface Dimension {
+	width: number;
+	height: number;
 }
 
 interface Block extends Position {
@@ -10,3 +15,7 @@ interface Block extends Position {
 }
 
 type Tool = "hand" | "pencil" | "eraser";
+
+interface Settings {
+	grid: boolean;
+}