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| 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 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 | import React, { useCallback, useEffect, useRef } from "react"; import { useAppSelector } from "store/hooks"; import { CollisionTileDef } from "shared/lib/resources/types"; import { defaultCollisionTileColor, defaultCollisionTileIcon, defaultCollisionTileDefs, } from "consts"; import { isCollisionTileActive, renderCollisionTileIcon, } from "shared/lib/collisions/collisionTiles"; import { decHexVal } from "shared/lib/helpers/8bit"; import { isoDiamondPoints, isoOriginX, isoOriginY, isoToScreen, } from "shared/lib/entities/isoUtils"; const TILE_SIZE = 16; interface SceneCollisionsProps { width: number; height: number; collisions: number[]; sceneTypeKey: string; isIsometric?: boolean; canvasWidth?: number; canvasHeight?: number; } const SceneCollisions = ({ width, height, collisions, sceneTypeKey, isIsometric = false, canvasWidth = width * 8, canvasHeight = height * 8, }: SceneCollisionsProps) => { const canvas = useRef<HTMLCanvasElement>(null); const showCollisionTileValues = useAppSelector( (state) => state.project.present.settings.showCollisionTileValues, ); const collisionLayerOpacity = useAppSelector( (state) => Math.floor(state.project.present.settings.collisionLayerOpacity) / 100, ); const collisionTileDefs = useAppSelector((state) => { const sceneType = state.engine.sceneTypes.find( (s) => s.key === sceneTypeKey, ); Iif (sceneType && sceneType.collisionTiles) return sceneType.collisionTiles; return defaultCollisionTileDefs; }); const drawCollisionTile = useCallback( ( tile: CollisionTileDef, ctx: CanvasRenderingContext2D, xi: number, yi: number, ) => { const tileIcon = renderCollisionTileIcon( tile.icon ?? defaultCollisionTileIcon, tile.color ?? defaultCollisionTileColor, ); Iif (isIsometric) { const originX = isoOriginX(width, height, canvasWidth); const originY = isoOriginY(width, height, canvasHeight); const projected = isoToScreen(xi, yi); const topX = originX + projected.x; const topY = originY + projected.y; const points = isoDiamondPoints(topX, topY) .split(" ") .map((point) => point.split(",").map(Number)); ctx.beginPath(); ctx.moveTo(points[0][0], points[0][1]); points.slice(1).forEach(([x, y]) => ctx.lineTo(x, y)); ctx.closePath(); ctx.fillStyle = tile.color ?? defaultCollisionTileColor; ctx.fill(); ctx.drawImage(tileIcon, topX - 4, topY + 4, 8, 8); return; } ctx.drawImage( tileIcon, 0, 0, 8, 8, xi * TILE_SIZE, yi * TILE_SIZE, TILE_SIZE, TILE_SIZE, ); }, [canvasHeight, canvasWidth, height, isIsometric, width], ); const drawLetter = useCallback( (letter: string, ctx: CanvasRenderingContext2D, x: number, y: number) => { ctx.textBaseline = "middle"; ctx.textAlign = isIsometric ? "center" : "start"; const projected = isIsometric ? isoToScreen(x, y) : undefined; const tx = projected ? isoOriginX(width, height, canvasWidth) + projected.x : x * TILE_SIZE; const ty = projected ? isoOriginY(width, height, canvasHeight) + projected.y + 8 : (y + 0.5) * TILE_SIZE; ctx.strokeStyle = "black"; ctx.lineWidth = 2; ctx.strokeText(letter, tx, ty); ctx.fillStyle = "white"; ctx.fillText(letter, tx, ty); }, [canvasHeight, canvasWidth, height, isIsometric, width], ); useEffect(() => { Iif (canvas.current) { // eslint-disable-next-line no-self-assign canvas.current.width = canvas.current.width; // Clear canvas const ctx = canvas.current.getContext("2d"); Iif (!ctx) return; ctx.font = "8px Public Pixel"; ctx.imageSmoothingEnabled = false; const activeCache: Record<string, boolean> = {}; for (let yi = 0; yi < height; yi++) { for (let xi = 0; xi < width; xi++) { const collisionIndex = width * yi + xi; let tile = collisions[collisionIndex] ?? 0; let unknownTile = tile !== 0; for (const tileDef of collisionTileDefs) { const key = `${tile}:${tileDef.flag}:${tileDef.mask}`; let isActive: boolean; if (key in activeCache) { isActive = activeCache[key]; } else { isActive = isCollisionTileActive( tile, tileDef, collisionTileDefs, ); activeCache[key] = isActive; } Iif (isActive) { ctx.fillStyle = tileDef.color; drawCollisionTile(tileDef, ctx, xi, yi); Iif (tileDef.icon) { unknownTile = false; } tile = tile & ~tileDef.flag; // Clear bits for matched tile } } Iif ( unknownTile || (showCollisionTileValues && tile !== 0 && tile !== undefined) ) { drawLetter(decHexVal(tile), ctx, xi, yi); } } } } }, [ canvasHeight, canvasWidth, collisionTileDefs, collisions, drawCollisionTile, drawLetter, height, isIsometric, showCollisionTileValues, width, ]); return ( <canvas ref={canvas} width={isIsometric ? canvasWidth : width * TILE_SIZE} height={isIsometric ? canvasHeight : height * TILE_SIZE} style={{ opacity: collisionLayerOpacity, width: isIsometric ? canvasWidth : width * TILE_SIZE * 0.5, height: isIsometric ? canvasHeight : undefined, imageRendering: "pixelated", }} /> ); }; export default SceneCollisions; |