monovania/system/input_move.go

405 lines
9.9 KiB
Go

package system
import (
"fmt"
"log"
"os"
"time"
"code.rocketnine.space/tslocum/gohan"
"code.rocketnine.space/tslocum/monovania/asset"
"code.rocketnine.space/tslocum/monovania/component"
"code.rocketnine.space/tslocum/monovania/engine"
"code.rocketnine.space/tslocum/monovania/world"
"github.com/fogleman/ease"
"github.com/hajimehoshi/ebiten/v2"
"github.com/hajimehoshi/ebiten/v2/inpututil"
)
type playerMoveSystem struct {
player gohan.Entity
movement *MovementSystem
lastWalkDirL bool
rewindTicks int
nextRewindTick int
}
func NewPlayerMoveSystem(player gohan.Entity, m *MovementSystem) *playerMoveSystem {
return &playerMoveSystem{
player: player,
movement: m,
}
}
func (_ *playerMoveSystem) Needs() []gohan.ComponentID {
return []gohan.ComponentID{
component.PositionComponentID,
component.VelocityComponentID,
component.WeaponComponentID,
component.SpriteComponentID,
}
}
func (_ *playerMoveSystem) Uses() []gohan.ComponentID {
return nil
}
func (s *playerMoveSystem) Update(ctx *gohan.Context) error {
if ebiten.IsKeyPressed(ebiten.KeyEscape) && !world.World.DisableEsc {
os.Exit(0)
return nil
}
if !world.World.GameStarted {
world.World.GameStartedTicks++
if world.World.GameStartedTicks == logoTime {
world.World.GameStarted = true
world.World.FadingIn = true
}
return nil
}
if world.World.FadingIn {
world.World.FadeInTicks++
if world.World.FadeInTicks == fadeInTime {
world.World.FadingIn = false
}
}
if ebiten.IsKeyPressed(ebiten.KeyControl) && inpututil.IsKeyJustPressed(ebiten.KeyV) {
v := 1
if ebiten.IsKeyPressed(ebiten.KeyShift) {
v = 2
}
if world.World.Debug == v {
world.World.Debug = 0
} else {
world.World.Debug = v
}
s.movement.UpdateDebugCollisionRects()
return nil
}
if ebiten.IsKeyPressed(ebiten.KeyControl) && inpututil.IsKeyJustPressed(ebiten.KeyN) {
world.World.NoClip = !world.World.NoClip
return nil
}
if ebiten.IsKeyPressed(ebiten.KeyControl) && inpututil.IsKeyJustPressed(ebiten.KeyX) {
position := engine.Engine.Component(s.player, component.PositionComponentID).(*component.PositionComponent)
world.World.SpawnX, world.World.SpawnY = position.X, position.Y-12
log.Printf("Spawn point set to %.0f,%.0f", world.World.SpawnX, world.World.SpawnY)
return nil
}
if ebiten.IsKeyPressed(ebiten.KeyControl) && inpututil.IsKeyJustPressed(ebiten.KeyK) {
if world.World.Keys < 3 {
world.World.Keys++
}
world.World.SetMessage(fmt.Sprintf("YOU NOW HAVE %d KEYS.", world.World.Keys))
return nil
}
if world.World.MessageVisible {
if inpututil.IsKeyJustPressed(ebiten.KeyEnter) {
world.World.MessageVisible = false
}
return nil
}
setWalkFrames := func() {
if world.World.NoClip {
return
}
sprite := component.Sprite(ctx)
sprite.Frames = []*ebiten.Image{
asset.PlayerSS.WalkR1,
asset.PlayerSS.IdleR,
asset.PlayerSS.WalkR2,
asset.PlayerSS.IdleR,
}
sprite.HorizontalFlip = s.lastWalkDirL
sprite.NumFrames = 4
sprite.FrameTime = 150 * time.Millisecond
}
setJumpAndIdleFrames := func() {
sprite := component.Sprite(ctx)
sprite.NumFrames = 0
if (s.movement.OnGround == -1 && s.movement.OnLadder == -1) || s.movement.Jumping || world.World.NoClip {
sprite.Image = asset.PlayerSS.WalkR2
} else {
sprite.Image = asset.PlayerSS.IdleR
}
sprite.HorizontalFlip = s.lastWalkDirL
}
// Rewind time.
const minRewindTicks = 144 / 3
const maxRewindTicks = 144 * 1.5
if ebiten.IsKeyPressed(ebiten.KeyR) {
if len(s.movement.playerPositions) > 1 {
position := component.Position(ctx)
if !world.World.Rewinding {
world.World.Rewinding = true
world.World.GameOver = false
velocity := component.Velocity(ctx)
velocity.X, velocity.Y = 0, 0
s.movement.RecordPosition(position)
setWalkFrames()
}
lastPos := s.movement.playerPositions[len(s.movement.playerPositions)-1]
nextPos := s.movement.playerPositions[len(s.movement.playerPositions)-2]
rx, ry := nextPos[0]-lastPos[0], nextPos[1]-lastPos[1]
if s.rewindTicks == 0 {
dx, dy := deltaXY(lastPos[0], lastPos[1], nextPos[0], nextPos[1])
s.nextRewindTick = 144 * int((dx+dy)/150)
if s.nextRewindTick < minRewindTicks {
s.nextRewindTick = minRewindTicks
} else if s.nextRewindTick > maxRewindTicks {
s.nextRewindTick = maxRewindTicks
}
s.rewindTicks++
// Update player direction.
rewindDirL := rx >= 0
if s.lastWalkDirL != rewindDirL {
s.lastWalkDirL = rewindDirL
setWalkFrames()
}
return nil
}
pct := 1.0
if s.nextRewindTick > 0 {
pct = float64(s.rewindTicks) / float64(s.nextRewindTick)
if pct > 1 {
pct = 1
}
}
position.X, position.Y = lastPos[0]+(rx*pct), lastPos[1]+(ry*pct)
if s.rewindTicks == s.nextRewindTick {
s.movement.RemoveLastPosition()
s.rewindTicks = 0
} else {
s.rewindTicks++
}
} else {
setJumpAndIdleFrames()
}
return nil
} else if s.nextRewindTick != 0 {
s.rewindTicks = 0
s.nextRewindTick = 0
world.World.Rewinding = false
s.movement.RemoveLastPosition()
}
moveSpeed := 0.1
maxSpeed := 0.5
maxLevitateSpeed := 1.0
maxYSpeed := 0.5
const jumpVelocity = -1.02
const dashVelocity = 5
velocity := component.Velocity(ctx)
var walkKeyPressed bool
// Jump.
if inpututil.IsKeyJustPressed(ebiten.KeyJ) {
if ((s.movement.OnGround != -1 || s.movement.OnLadder != -1) && world.World.Jumps == 0) || (world.World.CanDoubleJump && world.World.Jumps < 2) {
velocity.Y = jumpVelocity
s.movement.Jumping = true
s.movement.LastJump = time.Now()
world.World.Jumps++
} else if world.World.CanLevitate && world.World.Jumps == 2 {
world.World.Levitating = true
}
}
if s.movement.Jumping && (!ebiten.IsKeyPressed(ebiten.KeyJ) || time.Since(s.movement.LastJump) >= 200*time.Millisecond) {
s.movement.Jumping = false
}
if s.movement.OnGround != -1 && ebiten.IsKeyPressed(ebiten.KeyS) && !world.World.NoClip {
// Update player direction.
if ebiten.IsKeyPressed(ebiten.KeyA) {
s.lastWalkDirL = true
} else if ebiten.IsKeyPressed(ebiten.KeyD) {
s.lastWalkDirL = false
}
// Duck and look down.
sprite := component.Sprite(ctx)
sprite.NumFrames = 0
sprite.Image = asset.PlayerSS.DuckR
sprite.HorizontalFlip = s.lastWalkDirL
walkKeyPressed = true
if world.World.DuckStart == -1 {
if world.World.DuckEnd == -1 {
world.World.DuckStart = 0
} else {
world.World.DuckStart = 1 - world.World.DuckEnd
}
}
offset := ((float64(world.World.ScreenH) / 4) / 3) * -1
if world.World.OffsetY > offset {
pct := world.World.DuckStart
if pct < 0.5 {
pct = ease.InOutQuint(pct)
} else {
pct = ease.InOutQuint(pct)
}
world.World.OffsetY = offset * pct
if world.World.DuckStart < 1 {
world.World.DuckStart += 0.01
}
}
} else {
if world.World.DuckStart != -1 {
world.World.DuckEnd = 1 - world.World.DuckStart
world.World.DuckStart = -1
}
if world.World.DuckEnd != -1 {
offset := ((float64(world.World.ScreenH) / 4) / 3) * -1
pct := world.World.DuckEnd
if pct < 0.5 {
pct = ease.InOutQuint(pct)
} else {
pct = ease.InOutQuint(pct)
}
pct = 1 - pct
world.World.OffsetY = offset * pct
if world.World.DuckEnd < 1 {
world.World.DuckEnd += 0.01
}
}
if ebiten.IsKeyPressed(ebiten.KeyA) {
if velocity.X > -maxSpeed || world.World.NoClip {
if s.movement.OnLadder != -1 {
velocity.X -= moveSpeed / 2
} else {
velocity.X -= moveSpeed
}
}
if !world.World.NoClip {
sprite := component.Sprite(ctx)
sprite.Frames = []*ebiten.Image{
asset.PlayerSS.WalkR1,
asset.PlayerSS.IdleR,
asset.PlayerSS.WalkR2,
asset.PlayerSS.IdleR,
}
sprite.HorizontalFlip = true
sprite.NumFrames = 4
sprite.FrameTime = 150 * time.Millisecond
}
walkKeyPressed = true
s.lastWalkDirL = true
}
if ebiten.IsKeyPressed(ebiten.KeyD) {
if velocity.X < maxSpeed || world.World.NoClip {
if s.movement.OnLadder != -1 {
velocity.X += moveSpeed / 2
} else {
velocity.X += moveSpeed
}
}
if !world.World.NoClip {
sprite := component.Sprite(ctx)
sprite.Frames = []*ebiten.Image{
asset.PlayerSS.WalkR1,
asset.PlayerSS.IdleR,
asset.PlayerSS.WalkR2,
asset.PlayerSS.IdleR,
}
sprite.HorizontalFlip = false
sprite.NumFrames = 4
sprite.FrameTime = 150 * time.Millisecond
}
walkKeyPressed = true
s.lastWalkDirL = false
}
}
// Dash.
if inpututil.IsKeyJustPressed(ebiten.KeyK) && world.World.CanDash && world.World.Dashes == 0 && s.movement.OnGround == -1 && s.movement.OnLadder == -1 {
if s.lastWalkDirL {
velocity.X = -dashVelocity
} else {
velocity.X = dashVelocity
}
velocity.Y = 0
s.movement.Dashing = true
s.movement.LastDash = time.Now()
world.World.Dashes = 1
}
if s.movement.Dashing && (!ebiten.IsKeyPressed(ebiten.KeyK) || time.Since(s.movement.LastDash) >= 250*time.Millisecond) {
velocity.X = 0
s.movement.Dashing = false
}
if s.movement.OnLadder != -1 || world.World.NoClip {
if ebiten.IsKeyPressed(ebiten.KeyW) {
if velocity.Y > -maxYSpeed || world.World.NoClip {
velocity.Y -= moveSpeed
}
setWalkFrames()
walkKeyPressed = true
}
if ebiten.IsKeyPressed(ebiten.KeyS) && s.movement.OnGround == -1 {
if velocity.Y < maxYSpeed || world.World.NoClip {
velocity.Y += moveSpeed
}
setWalkFrames()
walkKeyPressed = true
}
}
if world.World.Levitating {
if ebiten.IsKeyPressed(ebiten.KeyJ) {
if velocity.Y > -maxLevitateSpeed {
velocity.Y -= moveSpeed
}
} else {
world.World.Levitating = false
}
}
if !walkKeyPressed || s.movement.Jumping || (s.movement.OnGround == -1 && s.movement.OnLadder == -1) || world.World.NoClip {
setJumpAndIdleFrames()
}
return nil
}
func (s *playerMoveSystem) Draw(_ *gohan.Context, _ *ebiten.Image) error {
return gohan.ErrSystemWithoutDraw
}
func deltaXY(x1, y1, x2, y2 float64) (dx float64, dy float64) {
dx, dy = x1-x2, y1-y2
if dx < 0 {
dx *= -1
}
if dy < 0 {
dy *= -1
}
return dx, dy
}