212 lines
4.8 KiB
Go
212 lines
4.8 KiB
Go
//go:build gl
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// 客户端输入处理：键鼠状态采集（UI与输入.md §6）。
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//
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// 设计：回调只更新状态，游戏逻辑在 tick 里消费状态（主循环解耦）。
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package main
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import (
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"math"
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"mc/internal/game"
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"mc/internal/physics"
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"github.com/go-gl/glfw/v3.3/glfw"
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)
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// inputState 键鼠输入状态。
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type inputState struct {
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win *glfw.Window
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// 按键状态
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forward, back, left, right, jump, sneak, sprint bool
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// 鼠标
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lastX, lastY float64
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firstMouse bool
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dyaw, dpitch float64 // 累计角度增量（弧度，tick 消费）
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// 按键事件（tick 消费）
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breakDown bool
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breakHeld bool
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placeDown bool
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selectSlot int // -1 无
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// 鼠标与 UI 事件（UI与输入.md §6 屏幕交互）
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cursorX, cursorY float64
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clickX, clickY float32
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clicked bool
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escPressed bool
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}
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// newInputState 创建输入状态并注册回调。
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func newInputState(win *glfw.Window) *inputState {
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in := &inputState{win: win, firstMouse: true, selectSlot: -1}
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win.SetKeyCallback(in.keyCallback)
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win.SetMouseButtonCallback(in.mouseButtonCallback)
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win.SetCursorPosCallback(in.cursorCallback)
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win.SetScrollCallback(in.scrollCallback)
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return in
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}
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// keyCallback 键盘回调（动作映射：WASD/空格/Shift/Ctrl/Esc）。
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func (in *inputState) keyCallback(_ *glfw.Window, key glfw.Key, _ int, action glfw.Action, _ glfw.ModifierKey) {
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down := action != glfw.Release
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switch key {
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case glfw.KeyW:
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in.forward = down
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case glfw.KeyS:
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in.back = down
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case glfw.KeyA:
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in.left = down
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case glfw.KeyD:
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in.right = down
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case glfw.KeySpace:
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in.jump = down
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case glfw.KeyLeftShift:
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in.sneak = down
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case glfw.KeyLeftControl:
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in.sprint = down
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case glfw.KeyEscape:
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if action == glfw.Press {
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in.escPressed = true // 暂停/继续由屏幕状态机处理
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}
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case glfw.Key1, glfw.Key2, glfw.Key3, glfw.Key4, glfw.Key5, glfw.Key6, glfw.Key7, glfw.Key8, glfw.Key9:
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if action == glfw.Press {
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in.selectSlot = int(key) - int(glfw.Key1)
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}
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}
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}
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// mouseButtonCallback 鼠标按键：左键破坏（按住累积）、右键放置（UI与输入.md §6 长按）。
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func (in *inputState) mouseButtonCallback(_ *glfw.Window, button glfw.MouseButton, action glfw.Action, _ glfw.ModifierKey) {
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switch button {
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case glfw.MouseButtonLeft:
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if action == glfw.Press {
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in.breakDown = true
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in.clicked = true
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in.clickX = float32(in.cursorX)
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in.clickY = float32(in.cursorY)
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}
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in.breakHeld = action != glfw.Release
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case glfw.MouseButtonRight:
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if action == glfw.Press {
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in.placeDown = true
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}
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}
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}
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// cursorCallback 鼠标移动：yaw/pitch 累积（渲染.md §2 主线程消费）。
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func (in *inputState) cursorCallback(_ *glfw.Window, x, y float64) {
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in.cursorX, in.cursorY = x, y
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if in.firstMouse {
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in.lastX, in.lastY = x, y
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in.firstMouse = false
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return
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}
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dx, dy := x-in.lastX, y-in.lastY
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in.lastX, in.lastY = x, y
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const sens = 0.0025
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in.dyaw += dx * sens
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in.dpitch -= dy * sens
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if in.dpitch > math.Pi/2-0.01 {
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in.dpitch = math.Pi/2 - 0.01
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}
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if in.dpitch < -math.Pi/2+0.01 {
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in.dpitch = -math.Pi/2 + 0.01
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}
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}
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// scrollCallback 滚轮切热键栏（UI与输入.md §6）。
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func (in *inputState) scrollCallback(_ *glfw.Window, _, yoff float64) {
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if yoff > 0 {
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in.selectSlot = -2 // 上滚
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} else if yoff < 0 {
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in.selectSlot = -3 // 下滚
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}
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}
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// apply 每 tick 把输入状态转成玩家动作（game.Session 驱动）。
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func (in *inputState) apply(s *game.Session) {
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cam := s.Cam
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p := s.Player
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// 视角
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if in.dyaw != 0 || in.dpitch != 0 {
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cam.Yaw += in.dyaw
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cam.Pitch += in.dpitch
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in.dyaw, in.dpitch = 0, 0
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}
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// 水平移动（物理与碰撞.md §3：走/冲刺/潜行）
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f := cam.Forward()
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r := cam.Right()
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wish := [2]float64{}
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if in.forward {
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wish[0] += f[0]
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wish[1] += f[2]
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}
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if in.back {
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wish[0] -= f[0]
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wish[1] -= f[2]
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}
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if in.right {
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wish[0] += r[0]
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wish[1] += r[2]
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}
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if in.left {
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wish[0] -= r[0]
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wish[1] -= r[2]
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}
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speed := 4.3
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if in.sprint {
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speed *= 1.3
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}
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if in.sneak {
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speed *= 0.3
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}
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l := math.Sqrt(wish[0]*wish[0] + wish[1]*wish[1])
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if l > 0 {
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p.Vel[0] = wish[0] / l * speed
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p.Vel[2] = wish[1] / l * speed
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} else {
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p.Vel[0] = 0
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p.Vel[2] = 0
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}
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// 跳跃
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if in.jump && p.OnGround {
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p.Jump()
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}
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// 热键栏切换
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switch in.selectSlot {
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case -2:
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s.Inv.Selected = (s.Inv.Selected + 1) % 9
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case -3:
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s.Inv.Selected = (s.Inv.Selected + 8) % 9
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default:
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if in.selectSlot >= 0 && in.selectSlot < 9 {
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s.Inv.Selected = in.selectSlot
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}
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}
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in.selectSlot = -1
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// 破坏（按住累积，方块交互与动画.md §3）
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if in.breakDown {
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s.BeginBreak()
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in.breakDown = false
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}
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if !in.breakHeld && s.BreakProgress() != 0 {
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s.EndBreak()
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}
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// 放置
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if in.placeDown {
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s.PlaceSelected()
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in.placeDown = false
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}
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}
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var _ = physics.Player{} // 保持引用（后续输入扩展用）
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