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Extract a board component from App.tsx
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,164 @@ | ||
| import React, { MouseEvent, useState } from "react"; | ||
| import { makeStyles } from "@material-ui/core"; | ||
| import { GRID_SIZE_PX } from "../config"; | ||
| import { Icon, ICONS_BY_ID, IconType, WALL_ICON } from "./icons"; | ||
| import uuid from "uuid"; | ||
| import { TokenState } from "../network/TokenStateClient"; | ||
| import { List } from "immutable"; | ||
| import FloorToken from "./token/FloorToken"; | ||
| import CardToken from "./token/CardToken"; | ||
| import UnreachableCaseError from "../util/UnreachableCaseError"; | ||
|
|
||
| let BACKGROUND_COLOR = "#F5F5DC"; | ||
| let GRID_COLOR = "#947C65"; | ||
|
|
||
| const useStyles = makeStyles({ | ||
| board: { | ||
| backgroundColor: BACKGROUND_COLOR, | ||
| backgroundImage: `repeating-linear-gradient( | ||
| 0deg, | ||
| transparent, | ||
| transparent ${GRID_SIZE_PX - 1}px, | ||
| ${GRID_COLOR} ${GRID_SIZE_PX - 1}px, | ||
| ${GRID_COLOR} ${GRID_SIZE_PX}px | ||
| ), | ||
| repeating-linear-gradient( | ||
| -90deg, | ||
| transparent, | ||
| transparent ${GRID_SIZE_PX - 1}px, | ||
| ${GRID_COLOR} ${GRID_SIZE_PX - 1}px, | ||
| ${GRID_COLOR} ${GRID_SIZE_PX}px | ||
| )`, | ||
| backgroundSize: `${GRID_SIZE_PX}px ${GRID_SIZE_PX}px`, | ||
| height: "100%", | ||
| width: "100%", | ||
| zIndex: 0, | ||
| position: "absolute", | ||
| // All the tokens inside the map have to be position absolute so that the | ||
| // drag offset calculations work properly | ||
| "& div": { | ||
| position: "absolute" | ||
| } | ||
| } | ||
| }); | ||
|
|
||
| enum MouseType { | ||
| drawing_walls = "walls", | ||
| deleting = "deleting", | ||
| none = "none" | ||
| } | ||
|
|
||
| const dragSnapToGrid = (x: number) => | ||
| Math.round(x / GRID_SIZE_PX) * GRID_SIZE_PX; | ||
| const clickSnapToGrid = (x: number) => | ||
| Math.floor(x / GRID_SIZE_PX) * GRID_SIZE_PX; | ||
|
|
||
| interface Props { | ||
| tokens: List<TokenState>; | ||
| activeFloor: Icon; | ||
| onTokenCreated: (token: TokenState) => void; | ||
| onTokenDeleted: (tokenId: string) => void; | ||
| onTokenMoved: (token: TokenState) => void; | ||
| } | ||
|
|
||
| const Board = (props: Props) => { | ||
| const classes = useStyles(); | ||
| const [mouseType, setMouseType] = useState<MouseType>(MouseType.none); | ||
|
|
||
| const onMouseMove = (e: MouseEvent) => { | ||
| if (mouseType === MouseType.drawing_walls) { | ||
| placeFloorAt(props.activeFloor, e.clientX, e.clientY); | ||
| } else if (mouseType === MouseType.deleting) { | ||
| deleteAt(e.clientX, e.clientY); | ||
| } | ||
| }; | ||
|
|
||
| const onMouseDown = (e: MouseEvent) => { | ||
| if (e.button === 0) { | ||
| setMouseType(MouseType.drawing_walls); | ||
| placeFloorAt(props.activeFloor, e.clientX, e.clientY); | ||
| } else if (e.button === 2) { | ||
| setMouseType(MouseType.deleting); | ||
| deleteAt(e.clientX, e.clientY); | ||
| } | ||
| }; | ||
|
|
||
| const deleteAt = (x: number, y: number) => { | ||
| const token = getTokenAt(x, y); | ||
| if (token) { | ||
| props.onTokenDeleted(token.id); | ||
| } | ||
| }; | ||
|
|
||
| const getTokenAt = (x: number, y: number) => { | ||
| const gridX = clickSnapToGrid(x); | ||
| const gridY = clickSnapToGrid(y); | ||
|
|
||
| return props.tokens | ||
| .filter(token => token.x === gridX && token.y === gridY) | ||
| .maxBy(token => token.z); | ||
| }; | ||
|
|
||
| const placeFloorAt = (icon: Icon, x: number, y: number) => { | ||
| if (getTokenAt(x, y)) { | ||
| return; | ||
| } | ||
|
|
||
| props.onTokenCreated({ | ||
| id: uuid(), | ||
| x: clickSnapToGrid(x), | ||
| y: clickSnapToGrid(y), | ||
| z: 0, | ||
| iconId: icon.id | ||
| }); | ||
| }; | ||
|
|
||
| const onMouseUp = () => setMouseType(MouseType.none); | ||
|
|
||
| const tokenIcons = props.tokens.map(token => { | ||
| const icon = ICONS_BY_ID.get(token.iconId, WALL_ICON); | ||
| const pos = { x: token.x, y: token.y, z: token.z }; | ||
|
|
||
| const onDropped = (x: number, y: number) => { | ||
| const newToken = { | ||
| id: token.id, | ||
| x: dragSnapToGrid(x), | ||
| y: dragSnapToGrid(y), | ||
| z: token.z, | ||
| iconId: token.iconId | ||
| }; | ||
| props.onTokenMoved(newToken); | ||
| }; | ||
|
|
||
| switch (icon.type) { | ||
| case IconType.floor: | ||
| case IconType.wall: | ||
| return <FloorToken key={token.id} icon={icon} pos={pos} />; | ||
| case IconType.token: | ||
| return ( | ||
| <CardToken | ||
| key={token.id} | ||
| icon={icon} | ||
| pos={pos} | ||
| onDropped={onDropped} | ||
| /> | ||
| ); | ||
| default: | ||
| throw new UnreachableCaseError(icon.type); | ||
| } | ||
| }); | ||
|
|
||
| return ( | ||
| <div | ||
| className={classes.board} | ||
| onMouseUp={onMouseUp} | ||
| onMouseDown={onMouseDown} | ||
| onMouseMove={onMouseMove} | ||
| onContextMenu={e => e.preventDefault()} | ||
| > | ||
| {tokenIcons} | ||
| </div> | ||
| ); | ||
| }; | ||
|
|
||
| export default Board; |