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import { getMap } from "../map.js"
import { Vec2, Map, Rotation, Key, Player, GameState, Tile } from "../types.js"
export const MOVE_SPEED = .08333
export const roundPos = (pos: Vec2): Vec2 => {
return {x: Math.round(pos.x), y: Math.round(pos.y)}
}
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
}
export const getTile = (
map: Map,
pos: Vec2,
ox: number,
oy: number
): number => {
let x = Math.round(pos.x + ox)
let y = Math.round(pos.y + oy)
if (x < 0 || x >= map.width || y < 0 || y >= map.height) return Tile.WALL
return map.data[y * map.width + x]
}
export const getTileFrontWithRot = (
map: Map,
pos: Vec2,
rot: Rotation
): number => {
let collider = 1
switch(rot) {
case Rotation.NORTH:
collider = getTile(map, pos, 0, -.51)
break
case Rotation.SOUTH:
collider = getTile(map, pos, 0, .51)
break
case Rotation.WEST:
collider = getTile(map, pos, -.51, 0)
break
case Rotation.EAST:
collider = getTile(map, pos, .51, 0)
break
}
return collider
}
const getRot = (key: Key): Rotation => {
switch (key) {
case Key.UP: return Rotation.NORTH
case Key.DOWN: return Rotation.SOUTH
case Key.LEFT: return Rotation.WEST
case Key.RIGHT: return Rotation.EAST
case Key.NOTHING: return Rotation.NOTHING
}
}
export const incrementPos = (
pos: Vec2,
rot: Rotation,
speed: number
): void => {
switch (rot) {
case Rotation.NORTH:
pos.y -= speed
break
case Rotation.SOUTH:
pos.y += speed
break
case Rotation.WEST:
pos.x -= speed
break
case Rotation.EAST:
pos.x += speed
break
}
}
const updateMovementForPlayer = (
map: Map,
player: Player,
inputKey: Key
) => {
let inputRot = getRot(inputKey)
let moveRot = player.moveRotation
let currentPosition = player.pos
let turningFrontTile = getTileFrontWithRot(map, currentPosition, inputRot)
if (turningFrontTile == Tile.WALL || turningFrontTile == Tile.GHOST_WALL) {
inputRot = Rotation.NOTHING
}
let turning = inputRot != Rotation.NOTHING && inputRot != moveRot
player.inputRotation = inputRot
if (turning && isStablePos(currentPosition)) {
currentPosition = roundPos(currentPosition)
player.moveRotation = inputRot
moveRot = inputRot
}
let movePos = structuredClone(currentPosition)
incrementPos(movePos, moveRot, MOVE_SPEED)
let frontTile = getTileFrontWithRot(map, currentPosition, moveRot)
if (frontTile != Tile.WALL && frontTile != Tile.GHOST_WALL) {
player.pos = movePos
player.moving = true
} else {
player.pos = roundPos(currentPosition)
player.moving = false
}
}
export const updateMovement = (data: GameState) => {
let map = getMap(data.mapId)
if (!map) return
for (const id in data.players) {
const player = data.players[id]
if(!player) {
continue
}
let inputKey = data.input[id]
updateMovementForPlayer(map, player, inputKey)
}
}
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