ghost

.gitignore

@@ -1,2 +1,5 @@
 server/target
 client/js
+client/package.json
+client/package-lock.json
+client/node_modules

client/src/editor.ts

@@ -1,3 +1,4 @@
+import { InitialState } from "./logic/logic.js"
 import { genMap, compressMap, decompressMap } from "./map.js"
 import { startGraphicsUpdater } from "./renderer.js"
 import { GameState, Vec2, Tile } from "./types.js"
@@ -128,13 +129,9 @@ const runMapEditor = (width: number, height: number) => {
 
     let map = genMap(width, height, data, Tile.EMPTY)
 
-    let state: GameState = {
-        started: true,
-        input: {},
-        players: {},
-        items: {},
-        mapId: 0
-    }
+    let state: GameState = structuredClone(InitialState);
+    state.mapId = 0;
+    state.started = true;
 
     let frame = 0
     const updateGraphics = startGraphicsUpdater()

client/src/logic/ai.ts

@@ -0,0 +1,197 @@
+import { getMap } from "../map.js";
+import { Map, Vec2, GhostType, GameState, SpawnIndex, Player, Rotation, GhostState, Tile, Ghost } from "../types.js";
+import { random } from "./logic.js";
+import { MOVE_SPEED, roundPos, isStablePos, getTile, getTileFrontWithRot, incrementPos } from "./movement.js";
+
+const diff = (a: Vec2, b:Vec2): Vec2 => {
+    return {x: a.x - b.x, y: a.y - b.y}
+}
+
+const dist = (a: Vec2, b: Vec2): number => {
+    return Math.sqrt(Math.pow(a.x - b.x, 2) + Math.pow(a.y - b.y, 2)) 
+}
+
+const trans = (pos: Vec2, rot: Rotation, dist: number): Vec2 => {
+    switch (rot) {
+        case Rotation.NORTH:
+        case Rotation.NOTHING:
+            return {x: pos.x - dist, y: pos.y - dist}
+        case Rotation.EAST:
+            return {x: pos.x + dist, y: pos.y}
+        case Rotation.SOUTH:
+            return {x: pos.x, y: pos.y + dist}
+        case Rotation.WEST:
+            return {x: pos.x - dist, y: pos.y}
+    }
+}
+
+const getNearestPlayer = (state: GameState, pos: Vec2): Player => {
+    let min = undefined;
+    let nearest = undefined;
+    for (let id in state.players) {
+        let player = state.players[id];
+        if (!id) continue;
+
+        let d = dist(player.pos, pos)
+        if (!min || min > d) {
+            min = d
+            nearest = player
+        }
+    }
+
+    return nearest
+}
+
+const pickTargetScatter = (state: GameState, type: GhostType): Vec2 => {
+    let map = getMap(state.mapId)
+    switch (type) {
+        case GhostType.BLINKY:
+            return {x: 0, y: -1}
+        case GhostType.PINKY:
+            return {x: map.width - 1, y: -1}
+        case GhostType.INKY:
+            return {x: map.width - 1, y: map.height}
+        case GhostType.CLYDE:
+            return {x: 0, y: map.height}
+    }   
+}
+
+const pickTargetChase = (state: GameState, type: GhostType): Vec2 => {
+    let ghost = state.ghosts[type]
+    let player = getNearestPlayer(state, ghost.pos)
+    switch (type) {
+        case GhostType.BLINKY:
+            return {x: player.pos.x, y: player.pos.y}
+        case GhostType.PINKY:
+            return trans(player.pos, player.moveRotation, 2)
+        case GhostType.INKY:
+            let target = trans(player.pos, player.moveRotation, 1)
+            let vec = diff(target, state.ghosts[GhostType.BLINKY].pos)
+            return {x: target.x + vec.x, y: target.y + vec.y}
+        case GhostType.CLYDE:
+            if (dist(ghost.pos, player.pos) > 8)
+                return {x: player.pos.x, y: player.pos.y}
+            else
+                return pickTargetScatter(state, type)
+    } 
+}
+
+
+
+const pickTarget = (state: GameState, map: Map, type: GhostType): Vec2 => {
+    let ghost: Ghost = state.ghosts[type]
+    switch (ghost.state) {
+        case GhostState.SCATTER:
+            return pickTargetScatter(state, type)
+        case GhostState.CHASE:
+            return pickTargetChase(state, type)
+        case GhostState.EATEN:
+            return structuredClone(map.spawns[SpawnIndex.GHOST_SPAWN])
+        case GhostState.SCARED:
+            return {
+                x: random(state) % map.width,
+                y: random(state) % map.height
+            }
+    }
+}
+
+const flipRot = (rot: Rotation) => {
+    switch (rot) {
+        case Rotation.NORTH:
+            return Rotation.SOUTH
+        case Rotation.SOUTH:
+            return Rotation.NORTH
+        case Rotation.EAST:
+            return Rotation.WEST
+        case Rotation.WEST:
+            return Rotation.EAST
+    }
+}
+
+const updateGhost = (state: GameState, map: Map, type: GhostType) => {
+    let ghost: Ghost = state.ghosts[type]
+
+    if (!ghost) {
+        ghost = {
+            pos: structuredClone(map.spawns[SpawnIndex.GHOST_SPAWN]),
+            target: structuredClone(map.spawns[SpawnIndex.GHOST_SPAWN]),
+            type,
+            state: GhostState.SCARED,
+            currentDirection: Rotation.EAST,
+        }
+        state.ghosts[type] = ghost
+    }
+
+    if (isStablePos(ghost.pos)) {
+
+        ghost.pos = roundPos(ghost.pos)
+
+        let front = getTileFrontWithRot(map, ghost.pos, ghost.currentDirection) == Tile.WALL
+        let north = getTile(map, ghost.pos, 0, -1) != Tile.WALL
+        let east = getTile(map, ghost.pos, 1, 0) != Tile.WALL
+        let south = getTile(map, ghost.pos, 0, 1) != Tile.WALL
+        let west = getTile(map, ghost.pos, -1, 0) != Tile.WALL
+
+        let isIntersection = 
+            (north && east) ||
+            (east && south) ||
+            (south && west) ||
+            (west && north)
+
+        if (!isIntersection && front) {
+            ghost.currentDirection = flipRot(ghost.currentDirection)
+        } else if (isIntersection) {
+            let target = pickTarget(state, map, type)
+            ghost.target = target
+            
+            let newRot = ghost.currentDirection
+            let min = undefined
+
+            if (north && ghost.currentDirection !== Rotation.SOUTH) {
+                let d = dist({x: ghost.pos.x, y: ghost.pos.y - 1}, target)
+                if (!min || min > d) {
+                    min = d
+                    newRot = Rotation.NORTH
+                }
+            }
+
+            if (east && ghost.currentDirection !== Rotation.WEST) {
+                let d = dist({x: ghost.pos.x + 1, y: ghost.pos.y}, target)
+                if (!min || min > d) {
+                    min = d
+                    newRot = Rotation.EAST
+                }
+            }
+
+            if (south && ghost.currentDirection !== Rotation.NORTH) {
+                let d = dist({x: ghost.pos.x, y: ghost.pos.y + 1}, target)
+                if (!min || min > d) {
+                    min = d
+                    newRot = Rotation.SOUTH
+                }
+            }
+
+            if (west && ghost.currentDirection !== Rotation.EAST) {
+                let d = dist({x: ghost.pos.x - 1, y: ghost.pos.y}, target)
+                if (!min || min > d) {
+                    min = d
+                    newRot = Rotation.WEST
+                }
+            }
+            
+            ghost.currentDirection = newRot
+        }
+    }
+
+    incrementPos(ghost.pos, ghost.currentDirection, MOVE_SPEED) 
+}
+
+export const updateGhosts = (state: GameState) => {
+    let map = getMap(state.mapId)
+    if (!map) return
+
+    updateGhost(state, map, GhostType.BLINKY)
+    updateGhost(state, map, GhostType.PINKY)
+    updateGhost(state, map, GhostType.INKY)
+    updateGhost(state, map, GhostType.CLYDE)
+}

client/src/logic/logic.ts

@@ -1,35 +1,42 @@
-import { genItems, genMap, getMap, decompressMap } from "../map.js";
+import { genItems, getMap } from "../map.js";
 import { updatePlayers } from "./players.js"
 import { updateUI } from "./ui.js"
 import { updateMovement } from "./movement.js"
 import { updateItems } from "./items.js" 
 import { GameState, Input } from "../types.js";
-
-const maps = {
-    [0]: 'EwRgPqYgNDew+TEuW6AGT2u59mPI/PeLZclSys1AhSgThJcJb2bdq7p5rupV2DYaVFCKI9HwFDiWACyxyK5WpCqArOPSCeuqfUnzDwaGbMyT3FAGZT0ABznD9ybWv0LLq61kz4S0M9WRMANnVVDUi1AHYdQxt+dyNEhJNiNk8A3npkiVSmcUEM6E5C/wL86rlivLqxaVymltggA='
-}
+import { updateGhosts } from "./ai.js";
 
 export const InitialState: GameState = {
     started: false,
     input: {},
     players: [],
+    ghosts: [undefined, undefined, undefined, undefined],
     items: {},
-    mapId: undefined
+    mapId: undefined,
+    frame: 0,
+    rng: 0
+}
+
+export const random = (state: GameState): number => {
+    return state.rng = (state.rng * 926659 + 4294967291) % 16381
 }
 
 export const onLogic = (
     pastData: GameState = InitialState, 
     input: Input = { players: {} },
-    _frame: number
+    frame: number
 ) => {
     
     let data = structuredClone(pastData)
+    data.frame = frame
+    random(data)
     
     let startPressed = updatePlayers(data, input);
 
     if (data.started) {
         updateMovement(data)
         updateItems(data)
+        updateGhosts(data)
     } else {
         updateUI(data)
     }
@@ -45,13 +52,15 @@ export const onLogic = (
 
 const initMap = (gameData: GameState, mapId: number) => {
 
+    document.getElementById("lobby").style.display = "none"
+
     gameData.mapId = mapId
 
     let map = getMap(mapId)
-    if (!map) {
-        let {width, height, data} = decompressMap(maps[mapId])
-        map = genMap(width, height, data, mapId)
-    }
+    // if (!map) {
+    //     let {width, height, data} = decompressMap(maps[mapId])
+    //     map = genMap(width, height, data, mapId)
+    // }
     
     gameData.items = genItems(map)
 }

client/src/logic/movement.ts

@@ -1,18 +1,18 @@
 import { getMap } from "../map.js"
 import { Vec2, Map, Rotation, Key, Player, GameState, Tile } from "../types.js"
 
-const MOVE_SPEED = .1
+export const MOVE_SPEED = .08333
 
-const roundPos = (pos: Vec2): Vec2 => {
+export const roundPos = (pos: Vec2): Vec2 => {
     return {x: Math.round(pos.x), y: Math.round(pos.y)}
 }
 
-const isStablePos = (pos: Vec2): boolean => {
+export const isStablePos = (pos: Vec2): boolean => {
     let rpos = roundPos(pos)
     return Math.abs(rpos.x - pos.x) < .05 && Math.abs(rpos.y - pos.y) < .05
 }
 
-const getTile = (
+export const getTile = (
     map: Map, 
     pos: Vec2, 
     ox: number, 
@@ -24,7 +24,7 @@ const getTile = (
     return map.data[y * map.width + x]
 }
 
-const getTileFrontWithRot = (
+export const getTileFrontWithRot = (
     map: Map, 
     pos: Vec2, 
     rot: Rotation
@@ -57,7 +57,7 @@ const getRot = (key: Key): Rotation => {
     }
 }
 
-const incrementPos = (
+export const incrementPos = (
     pos: Vec2, 
     rot: Rotation, 
     speed: number

client/src/main.ts

@@ -1,12 +1,17 @@
 import { Game } from "./net/game.js";
 import { InitialState, onLogic } from "./logic/logic.js";
 import { startGraphicsUpdater } from "./renderer.js";
-import { GameKeyMap, Frame, Key, Player } from "./types.js";
+import { GameKeyMap, Frame, Key, Player, GAME_MAP_COUNT, Vec2 } from "./types.js";
+import { checkMap, decompressMap, genMap } from "./map.js";
 
 const join = document.getElementById("join")
 const lobby = document.getElementById("lobby")
 const mapeditor = document.getElementById("mapeditor")
 
+const maps = {
+    [0]: 'EwRgPqYgNDew+TEuW6AGT2u59mPI/PeLZclSys1AhSgThJcJb2bdq7p5rupV2DYaVFCKI9HwFDiWACyxyK5WpCqArOPSCeuqfUnzDwaGbMyT3FAGZT0ABznD9ybWv0LLq61kz4S0M9WRMANnVVDUi1AHYdQxt+dyNEhJNiNk8A3npkiVSmcUEM6E5C/wL86rlivLqxaVymltggA='
+}
+
 join.onsubmit = async function(event) {
     event.preventDefault()
 
@@ -23,8 +28,19 @@ join.onsubmit = async function(event) {
         return
     }
 
-    join.style.display = "none"
-    mapeditor.style.display = "none"
+    for (let mapId = 0; mapId < GAME_MAP_COUNT; mapId++) {
+        let {width, height, data} = decompressMap(maps[0]) // for now
+        let map = genMap(width, height, data, mapId)
+        let [success, result] = checkMap(map)
+
+        if (!success) {
+            alert(result)
+            return
+        }
+
+        map.spawns = result as Vec2[]
+
+    }
 
     startGame(room_code, player_name)
 }
@@ -48,6 +64,8 @@ const onLoad = (startData: Frame) => {
         return false
     }
 
+    join.style.display = "none"
+    mapeditor.style.display = "none"
     lobby.style.display = ""
 
     return true

client/src/map.ts

@@ -1,4 +1,4 @@
-import { Wall, ItemType, Map, Maps, Items, Tile } from "./types.js"
+import { Wall, ItemType, Map, Maps, Items, Tile, SpawnIndex, Vec2 } from "./types.js"
 import { LZString } from "./lib/lz-string.js"
 
 export const getItemKey = (
@@ -165,6 +165,76 @@ export const getMap = (mapId: number): Map | undefined => {
     return mapData[mapId]
 }
 
+export const checkMap = (map: Map): [boolean, string | Vec2[]] => {
+    let spawns = new Array(5).fill(undefined)
+    let hasFood = false
+    let hasThicc = false
+    let hasInitial = false
+
+    if (map.width < 5 || map.height < 5 || map.width > 50 || map.height > 50) {
+        return [false, "Map but be between either 5 or 50 on both axies"]
+    }
+
+    for (let y = 0; y < map.height; y++) {
+        for (let x = 0; x < map.width; x++) {
+
+            let type = map.data[y * map.width + x]
+
+            switch (type) {
+                case Tile.FOOD:
+                    hasFood = true
+                    break
+                case Tile.THICC_DOT:
+                    hasThicc = true
+                    break
+                case Tile.INITIAL_DOT:
+                    hasInitial = true
+                    break
+                case Tile.PLAYER_SPAWN_1:
+                    if (spawns[SpawnIndex.PAC_SPAWN_1])
+                        return [false, "Map cannot have duplicate spawns"]
+                    spawns[SpawnIndex.PAC_SPAWN_1] = {x, y}
+                    break
+                case Tile.PLAYER_SPAWN_2:
+                    if (spawns[SpawnIndex.PAC_SPAWN_2])
+                        return [false, "Map cannot have duplicate spawns"]
+                    spawns[SpawnIndex.PAC_SPAWN_2] = {x, y}
+                    break
+                case Tile.PLAYER_SPAWN_3:
+                    if (spawns[SpawnIndex.PAC_SPAWN_3])
+                        return [false, "Map cannot have duplicate spawns"]
+                    spawns[SpawnIndex.PAC_SPAWN_3] = {x, y}
+                    break
+                case Tile.PLAYER_SPAWN_4:
+                    if (spawns[SpawnIndex.PAC_SPAWN_4])
+                        return [false, "Map cannot have duplicate spawns"]
+                    spawns[SpawnIndex.PAC_SPAWN_4] = {x, y}
+                    break
+                case Tile.GHOST_SPAWN:
+                    if (spawns[SpawnIndex.GHOST_SPAWN])
+                        return [false, "Map cannot have duplicate spawns"]
+                    spawns[SpawnIndex.GHOST_SPAWN] = {x, y}
+                    break
+            }
+
+        }
+    }
+
+    if (!hasFood)
+        return [false, "Map must have at least 1 food"]
+
+    if (!hasThicc)
+        return [false, "Map must have at least 1 thicc dot"]
+
+    if (!hasInitial)
+        return [false, "Map must have at least 1 initial dot"]
+
+    if (spawns.filter(s => s === undefined).length > 0)
+        return [false, "Map must have 4 pac spawns and 1 ghost spawn"]
+
+    return [true, spawns]
+}
+
 export const compressMap = (map: Map): string => {
     let encoded = map.width + '|' + map.height + '|' + map.data.map(n => n + ',').join('').slice(0, -1)
     return LZString.compressToBase64(encoded)

client/src/renderer.ts

@@ -1,7 +1,7 @@
 import { getMap } from "./map.js";
-import { Items, Players, Rotation, ItemType, Map, Wall, GameState, Tile, ATLAS_TILE_WIDTH } from "./types.js";
+import { Items, Players, Rotation, ItemType, Map, Wall, GameState, Tile, ATLAS_TILE_WIDTH, Ghosts, Ghost, GhostType, GhostState } from "./types.js";
 
-const update_style = (width: number, height: number) => {
+const updateStyle = (width: number, height: number) => {
 
     let style = document.getElementById("style")
 
@@ -35,37 +35,82 @@ const update_style = (width: number, height: number) => {
     style.innerHTML = css
 }
 
-const draw_sprite = (
+const drawSprite = (
     ctx: CanvasRenderingContext2D, 
     x: number, 
     y: number, 
     width: number,
     atlas: CanvasImageSource,
-    atlas_index: [number, number],
-    atlas_tile_width: number,
+    atlasIndex: [number, number],
+    atlasTileWidth: number,
     rotation: Rotation
 ) => {
     ctx.save()
     ctx.translate(
-        (x + 0.5) * ATLAS_TILE_WIDTH, 
-        (y + 0.5) * ATLAS_TILE_WIDTH
+        (x + 0.5) * atlasTileWidth, 
+        (y + 0.5) * atlasTileWidth
     )
     ctx.rotate(rotation * Math.PI / 180)
     ctx.drawImage(
         atlas, 
-        atlas_index[0] * atlas_tile_width,
-        atlas_index[1] * atlas_tile_width, 
-        atlas_tile_width, 
-        atlas_tile_width, 
-        -width * ATLAS_TILE_WIDTH / 2,
-        -width * ATLAS_TILE_WIDTH / 2, 
-        width * ATLAS_TILE_WIDTH, 
-        width * ATLAS_TILE_WIDTH
+        atlasIndex[0] * atlasTileWidth,
+        atlasIndex[1] * atlasTileWidth, 
+        atlasTileWidth, 
+        atlasTileWidth, 
+        -width * atlasTileWidth / 2,
+        -width * atlasTileWidth / 2, 
+        width * atlasTileWidth, 
+        width * atlasTileWidth
     )
     ctx.restore() 
 }
 
-const draw_players = (
+const hueCanvas = document.createElement("canvas");
+const drawSpriteHue = (
+    ctx: CanvasRenderingContext2D, 
+    x: number, 
+    y: number, 
+    width: number,
+    atlas: CanvasImageSource,
+    atlasIndex: [number, number],
+    atlasTileWidth: number,
+    rotation: Rotation,
+    color: string
+) => {
+	hueCanvas.width = atlasTileWidth;
+	hueCanvas.height = atlasTileWidth;
+	const hueCtx = hueCanvas.getContext('2d');
+
+    hueCtx.globalCompositeOperation = "copy"
+	hueCtx.fillStyle = color;
+	hueCtx.fillRect(0, 0, atlasTileWidth, atlasTileWidth);
+	
+	hueCtx.globalCompositeOperation = "destination-in";
+    hueCtx.drawImage (
+        atlas,
+        atlasIndex[0] * atlasTileWidth,
+        atlasIndex[1] * atlasTileWidth,
+        atlasTileWidth,
+        atlasTileWidth,
+        0,
+        0,
+        atlasTileWidth,
+        atlasTileWidth
+    )
+	
+    drawSprite (
+        ctx,
+        x, y,
+        width,
+        hueCanvas,
+        [0, 0],
+        atlasTileWidth,
+        rotation
+    )
+
+}
+
+const drawPlayers = (
     ctx: CanvasRenderingContext2D,
     atlas: CanvasImageSource,
     players: Players, 
@@ -88,9 +133,9 @@ const draw_players = (
         let player = players[id] 
         if (!player) continue
 
-        let atlas_index = atlas_frames[0]
+        let atlasIndex = atlas_frames[0]
         if (player.moving) {
-            atlas_index = atlas_frames[Math.floor(frame / 2) % atlas_frames.length]
+            atlasIndex = atlas_frames[Math.floor(frame / 2) % atlas_frames.length]
         }
 
         let rotation: number
@@ -110,20 +155,117 @@ const draw_players = (
                 break
         }
 
-        draw_sprite (
+        drawSprite (
             ctx,
             player.pos.x,
             player.pos.y,
             1,
             atlas,
-            atlas_index,
+            atlasIndex,
             ATLAS_TILE_WIDTH,
             rotation
         )
     }  
 }
 
-const draw_items = (
+const drawGhosts = (
+    ctx: CanvasRenderingContext2D,
+    atlas: CanvasImageSource,
+    ghosts: Ghosts 
+) => {
+    for (let type in ghosts) {
+        let ghost: Ghost = ghosts[type]
+        if (!ghost) continue
+
+        let color: string
+        switch (ghost.type) {
+            case GhostType.BLINKY:
+                color = '#ed2724'
+                break
+            case GhostType.PINKY:
+                color = '#ffb9de'
+                break
+            case GhostType.INKY:
+                color = '#00ffdf'
+                break
+            case GhostType.CLYDE:
+                color = '#ffb748'
+                break
+        }
+        
+        if (
+            ghost.state == GhostState.SCATTER || 
+            ghost.state == GhostState.CHASE
+        ) {
+            drawSpriteHue (
+                ctx,
+                ghost.pos.x,
+                ghost.pos.y,
+                1,
+                atlas,
+                [0, 4],
+                ATLAS_TILE_WIDTH,
+                0,
+                color
+            )
+        }
+
+        if (ghost.state != GhostState.SCARED) {
+            let eyes: [number, number]
+            switch (ghost.currentDirection) {
+                case Rotation.EAST:
+                    eyes = [1, 4]
+                    break
+                case Rotation.WEST:
+                    eyes = [2, 4]
+                    break
+                case Rotation.NORTH:
+                    eyes = [3, 4]
+                    break
+                case Rotation.SOUTH:
+                    eyes = [4, 4]
+                    break
+            }
+
+            drawSprite (
+                ctx,
+                ghost.pos.x,
+                ghost.pos.y,
+                1,
+                atlas,
+                eyes,
+                ATLAS_TILE_WIDTH,
+                0
+            )
+        } else {
+            drawSprite (
+                ctx,
+                ghost.pos.x,
+                ghost.pos.y,
+                1,
+                atlas,
+                [4, 3],
+                ATLAS_TILE_WIDTH,
+                0
+            )
+        }
+
+        // drawSpriteHue (
+        //     ctx,
+        //     ghost.target.x,
+        //     ghost.target.y,
+        //     1,
+        //     atlas,
+        //     [3, 0],
+        //     ATLAS_TILE_WIDTH,
+        //     0,
+        //     color
+        // )
+
+    }
+}
+
+const drawItems = (
     ctx: CanvasRenderingContext2D, 
     atlas: CanvasImageSource,
     items: Items 
@@ -134,31 +276,31 @@ const draw_items = (
         let item = items[item_key]
         if (!item) continue
 
-        let width: number, atlas_index: [number, number]
+        let width: number, atlasIndex: [number, number]
         switch (item.type) {
             case ItemType.DOT:
                 width = .2
-                atlas_index = [2, 3]
+                atlasIndex = [2, 3]
                 break
             case ItemType.THICC_DOT:
                 width = .4
-                atlas_index = [2, 3]
+                atlasIndex = [2, 3]
                 break
             case ItemType.FOOD:
                 width = 1
-                atlas_index = [3, 3]
+                atlasIndex = [3, 3]
                 break
             default:
                 continue
         }
 
-        draw_sprite (
+        drawSprite (
             ctx,
             item.pos.x,
             item.pos.y,
             width,
             atlas,
-            atlas_index,
+            atlasIndex,
             ATLAS_TILE_WIDTH,
             0
         )
@@ -167,7 +309,7 @@ const draw_items = (
 
 }
 
-const draw_map_canvas = (
+const drawMapCanvas = (
     ctx: CanvasRenderingContext2D, 
     atlas: CanvasImageSource, 
     map: Map
@@ -178,83 +320,83 @@ const draw_map_canvas = (
 
             let wall_type = map.walls[y * map.width + x]
 
-            let atlas_index: [number, number], rotation: number;
+            let atlasIndex: [number, number], rotation: number;
             switch(wall_type) {
                 case Wall.EMPTY:
                     continue
                 case Wall.WALL_HZ:
-                    atlas_index = [1, 1]
+                    atlasIndex = [1, 1]
                     rotation = 0
                     break
                 case Wall.WALL_VT:
-                    atlas_index = [1, 1]
+                    atlasIndex = [1, 1]
                     rotation = 90
                     break
                 case Wall.TURN_Q1:
-                    atlas_index = [2, 0]
+                    atlasIndex = [2, 0]
                     rotation = 0
                     break
                 case Wall.TURN_Q2:
-                    atlas_index = [2, 0]
+                    atlasIndex = [2, 0]
                     rotation = 270
                     break
                 case Wall.TURN_Q3:
-                    atlas_index = [2, 0]
+                    atlasIndex = [2, 0]
                     rotation = 180
                     break
                 case Wall.TURN_Q4:
-                    atlas_index = [2, 0]
+                    atlasIndex = [2, 0]
                     rotation = 90
                     break
                 case Wall.TEE_NORTH:
-                    atlas_index = [1, 0]
+                    atlasIndex = [1, 0]
                     rotation = 180
                     break
                 case Wall.TEE_EAST:
-                    atlas_index = [1, 0]
+                    atlasIndex = [1, 0]
                     rotation = 270
                     break
                 case Wall.TEE_SOUTH:
-                    atlas_index = [1, 0]
+                    atlasIndex = [1, 0]
                     rotation = 0
                     break
                 case Wall.TEE_WEST:
-                    atlas_index = [1, 0]
+                    atlasIndex = [1, 0]
                     rotation = 90
                     break
                 case Wall.CROSS:
-                    atlas_index = [0, 0]
+                    atlasIndex = [0, 0]
                     rotation = 0
                     break
                 case Wall.DOT:
-                    atlas_index = [2, 1]
+                    atlasIndex = [2, 1]
                     rotation = 0
                     break
                 case Wall.WALL_END_NORTH:
-                    atlas_index = [0, 1]
+                    atlasIndex = [0, 1]
                     rotation = 0
                     break;
                 case Wall.WALL_END_EAST:
-                    atlas_index = [0, 1]
+                    atlasIndex = [0, 1]
                     rotation = 90
                     break;
                 case Wall.WALL_END_SOUTH:
-                    atlas_index = [0, 1]
+                    atlasIndex = [0, 1]
                     rotation = 180
                     break;
                 case Wall.WALL_END_WEST:
-                    atlas_index = [0, 1]
+                    atlasIndex = [0, 1]
                     rotation = 270
                     break;
             }
 
-            draw_sprite (
+            drawSprite (
                 ctx,
                 x, 
                 y,
                 1,
                 atlas,
-                atlas_index,
+                atlasIndex,
                 ATLAS_TILE_WIDTH,
                 rotation
             )
@@ -276,49 +418,49 @@ const draw_debug_sprites = (
 
         
             let size = 1
-            let atlas_index: [number, number];
+            let atlasIndex: [number, number];
             switch (tile_type) {
                 case Tile.EMPTY:
                 case Tile.WALL:
                     continue
                 case Tile.GHOST_WALL:
-                    atlas_index = [4, 0]
+                    atlasIndex = [4, 0]
                     break
                 case Tile.GHOST_SPAWN: 
-                    atlas_index = [3, 0]
+                    atlasIndex = [3, 0]
                     break
                 case Tile.FOOD:
-                    atlas_index = [3, 3]
+                    atlasIndex = [3, 3]
                     break
                 case Tile.PLAYER_SPAWN_1:
-                    atlas_index = [3, 1]
+                    atlasIndex = [3, 1]
                     break
                 case Tile.PLAYER_SPAWN_2:
-                    atlas_index = [4, 1]
+                    atlasIndex = [4, 1]
                     break
                 case Tile.PLAYER_SPAWN_3:
-                    atlas_index = [3, 2]
+                    atlasIndex = [3, 2]
                     break
                 case Tile.PLAYER_SPAWN_4:
-                    atlas_index = [4, 2]
+                    atlasIndex = [4, 2]
                     break
                 case Tile.THICC_DOT:
-                    atlas_index = [2, 3]
+                    atlasIndex = [2, 3]
                     size = .4
                     break
                 case Tile.INITIAL_DOT:
-                    atlas_index = [2, 3]
+                    atlasIndex = [2, 3]
                     size = .2
                     break
             }
 
-            draw_sprite (
+            drawSprite (
                 ctx,
                 x, 
                 y,
                 size,
                 atlas,
-                atlas_index,
+                atlasIndex,
                 ATLAS_TILE_WIDTH,
                 0
             )
@@ -327,8 +469,8 @@ const draw_debug_sprites = (
     }
 }
 
-let map_canvas = document.createElement("canvas")
-const draw_map = (
+let mapCanvas = document.createElement("canvas")
+const drawMap = (
     ctx: CanvasRenderingContext2D, 
     atlas: CanvasImageSource, 
     map: Map, 
@@ -337,33 +479,30 @@ const draw_map = (
 ) => {
 
     if (map.id !== last || editor) {
-        map_canvas.width = map.width * ATLAS_TILE_WIDTH
-        map_canvas.height = map.height * ATLAS_TILE_WIDTH
+        mapCanvas.width = map.width * ATLAS_TILE_WIDTH
+        mapCanvas.height = map.height * ATLAS_TILE_WIDTH
         
-        let map_ctx = map_canvas.getContext("2d")
-        draw_map_canvas(map_ctx, atlas, map)
+        let map_ctx = mapCanvas.getContext("2d")
+        drawMapCanvas(map_ctx, atlas, map)
         if (editor) {
             draw_debug_sprites(map_ctx, atlas, map)
         }
     }
 
     ctx.drawImage (
-        map_canvas,
+        mapCanvas,
         0,
         0
     )
 
 }
 
-let last_map_drawn: number | undefined
+let lastMapDrawn: number | undefined
 export const startGraphicsUpdater = () => {
 
     let canvas = document.getElementById("canvas") as HTMLCanvasElement
     let atlas = document.getElementById("atlas") as HTMLImageElement
 
-    /**
-     * @param {import("./logic").GameState} data 
-     */
     return (
         data: GameState, 
         frame: number,
@@ -374,7 +513,7 @@ export const startGraphicsUpdater = () => {
 
         if (!map) return
 
-        if (map.id !== last_map_drawn) {
+        if (map.id !== lastMapDrawn) {
             canvas.style.display = ""
             canvas.width = map.width * ATLAS_TILE_WIDTH
             canvas.height = map.height * ATLAS_TILE_WIDTH
@@ -383,12 +522,13 @@ export const startGraphicsUpdater = () => {
         let ctx = canvas.getContext("2d")
         ctx.clearRect(0, 0, canvas.width, canvas.height)
         
-        draw_map(ctx, atlas, map, last_map_drawn, editor)
-        draw_items(ctx, atlas, data.items)
-        draw_players(ctx, atlas, data.players, frame)
-        update_style(map.width, map.height)
+        drawMap(ctx, atlas, map, lastMapDrawn, editor)
+        drawItems(ctx, atlas, data.items)
+        drawGhosts(ctx, atlas, data.ghosts)
+        drawPlayers(ctx, atlas, data.players, frame)
+        updateStyle(map.width, map.height)
 
-        last_map_drawn = map.id
+        lastMapDrawn = map.id
 
     }
 

client/src/types.ts

@@ -1,5 +1,6 @@
 
 export const ATLAS_TILE_WIDTH = 32
+export const GAME_MAP_COUNT = 4
 
 export enum Tile {
     EMPTY = 0,
@@ -49,6 +50,28 @@ export enum Key {
     RIGHT
 }
 
+export enum GhostType {
+    BLINKY = 0,
+    PINKY = 1,
+    INKY = 2,
+    CLYDE = 3
+}
+
+export enum GhostState {
+    CHASE,
+    SCATTER,
+    EATEN,
+    SCARED
+}
+
+export type Ghost = {
+    pos: Vec2,
+    type: GhostType,
+    target: Vec2,
+    state: GhostState,
+    currentDirection: Rotation,
+}
+
 export type KeyMap = {
     [key: string]: Key
 }
@@ -123,23 +146,37 @@ export type Items = {
     [key: number]: Item
 }
 
+export enum SpawnIndex {
+    PAC_SPAWN_1 = 1,
+    PAC_SPAWN_2 = 2,
+    PAC_SPAWN_3 = 3,
+    PAC_SPAWN_4 = 4,
+    GHOST_SPAWN = 0
+}
+
 export type Map = {
     data: number[],
     walls: number[],
     width: number,
     height: number,
-    id: number
+    id: number,
+    spawns?: Vec2[]
 }
 
 export type Maps = {
     [key: number]: Map
 }
 
+export type Ghosts = [Ghost, Ghost, Ghost, Ghost]
+
 export type GameState = {
     started: boolean,
     input: InputMap,
     players: Players,
+    ghosts: Ghosts,
     items: Items,
+    frame: number,
+    rng: number,
     mapId: number | undefined
 }