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show last move marker #2

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Merged
merged 1 commit into from
Aug 2, 2024
Merged

show last move marker #2

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31 changes: 27 additions & 4 deletions src/main/client/src/Game.jsx
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Original file line number Diff line number Diff line change
Expand Up @@ -40,6 +40,8 @@ const TAU = 2 * Math.PI
export const Game = () => {
let [cursor_x, setCursor_x] = useState(-1)
let [cursor_y, setCursor_y] = useState(-1)
let lastStoneXref = useRef(-1)
let lastStoneYref = useRef(-1)
let [zoom, setZoom] = useState(0)
let { gameId } = useParams()
let stompClient = useContext(StompContext)
Expand Down Expand Up @@ -73,11 +75,7 @@ export const Game = () => {
}
let hoshis = new PointList(dim)
if (dim === 9) {
hoshis.add(2, 2)
hoshis.add(2, 6)
hoshis.add(4, 4)
hoshis.add(6, 2)
hoshis.add(6, 6)
} else if (dim === 13) {
hoshis.add(3, 3)
hoshis.add(3, 9)
Expand Down Expand Up @@ -109,6 +107,8 @@ export const Game = () => {
stoneRadius: getRadius(step * 0.475),
territoryRadius: getRadius(step * 0.125),
hoshiRadius: getRadius(step * 0.0625),
lastStoneXref: lastStoneXref,
lastStoneYref: lastStoneYref,
}
}, [board.length, canvasRef, zoom])
let onMouseMove = useCallback((e) => {
Expand Down Expand Up @@ -148,6 +148,8 @@ export const Game = () => {
return
}
}
lastStoneXref.current = cursor_x
lastStoneYref.current = cursor_y
stompClient.publish({
destination: "/app/game/move",
body: JSON.stringify({
Expand Down Expand Up @@ -247,6 +249,26 @@ function showStone({ canvasRef, grid, stoneRadius }, grid_x, grid_y, style) {
ctx.fill()
}

function showTriangle({ isCursorInBounds, canvasRef, grid, stoneRadius, lastStoneXref, lastStoneYref }, board) {
let grid_x = lastStoneXref.current
let grid_y = lastStoneYref.current
if (!isCursorInBounds(grid_x, grid_y)) {
return
}
let { color } = board[grid_y][grid_x]
let style = color === BLACK ?
"rgba(255,255,255)" :
"rgba(0,0,0)"
let [x, y] = grid[grid_y][grid_x]
let ctx = canvasRef.current.getContext("2d")
ctx.fillStyle = style
ctx.beginPath()
ctx.moveTo(x, y)
ctx.lineTo(x + stoneRadius, y)
ctx.lineTo(x , y + stoneRadius)
ctx.fill()
}

function showShadow({ canvasRef, grid, stoneRadius }, grid_x, grid_y, style) {
let [x, y] = grid[grid_y][grid_x]
let ctx = canvasRef.current.getContext("2d")
Expand Down Expand Up @@ -306,6 +328,7 @@ function paintStones(context, board) {
}
}
}
showTriangle(context, board)
}

function paintStonesCounting(context, board, countingGroup) {
Expand Down
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