mirror of
https://github.com/hajimehoshi/ebiten.git
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132 lines
3.2 KiB
Go
132 lines
3.2 KiB
Go
package blocks
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import (
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"github.com/hajimehoshi/go-ebiten/graphics"
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"github.com/hajimehoshi/go-ebiten/graphics/matrix"
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"github.com/hajimehoshi/go-ebiten/ui"
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"image/color"
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"math/rand"
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"time"
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)
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func init() {
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texturePaths["empty"] = "images/blocks/empty.png"
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}
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type GameScene struct {
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field *Field
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rand *rand.Rand
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currentPiece *Piece
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currentPieceX int
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currentPieceY int
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currentPieceAngle Angle
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nextPiece *Piece
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landingCount int
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}
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func NewGameScene() *GameScene {
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return &GameScene{
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field: NewField(),
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rand: rand.New(rand.NewSource(time.Now().UnixNano())),
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}
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}
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const emptyWidth = 16
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const emptyHeight = 16
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const fieldWidth = blockWidth * fieldBlockNumX
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const fieldHeight = blockHeight * fieldBlockNumY
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func (s *GameScene) choosePiece() *Piece {
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num := NormalBlockTypeNum
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blockType := BlockType(s.rand.Intn(num) + 1)
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return Pieces[blockType]
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}
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func (s *GameScene) initCurrentPiece(piece *Piece) {
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s.currentPiece = piece
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x, y := s.currentPiece.InitialPosition()
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s.currentPieceX = x
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s.currentPieceY = y
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s.currentPieceAngle = Angle0
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}
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func (s *GameScene) Update(state *GameState) {
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const maxLandingCount = 60
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if s.currentPiece == nil {
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s.initCurrentPiece(s.choosePiece())
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}
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if s.nextPiece == nil {
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s.nextPiece = s.choosePiece()
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}
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piece := s.currentPiece
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x := s.currentPieceX
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y := s.currentPieceY
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angle := s.currentPieceAngle
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moved := false
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if state.Input.StateForKey(ui.KeySpace) == 1 {
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s.currentPieceAngle = s.field.RotatePieceRight(piece, x, y, angle)
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moved = angle != s.currentPieceAngle
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}
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if l := state.Input.StateForKey(ui.KeyLeft); l == 1 || (10 <= l && l%2 == 0) {
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s.currentPieceX = s.field.MovePieceToLeft(piece, x, y, angle)
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moved = x != s.currentPieceX
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}
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if r := state.Input.StateForKey(ui.KeyRight); r == 1 || (10 <= r && r%2 == 0) {
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s.currentPieceX = s.field.MovePieceToRight(piece, x, y, angle)
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moved = y != s.currentPieceX
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}
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if d := state.Input.StateForKey(ui.KeyDown); (d-1)%2 == 0 {
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s.currentPieceY = s.field.DropPiece(piece, x, y, angle)
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moved = y != s.currentPieceY
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}
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if moved {
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s.landingCount = 0
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} else if !s.field.PieceDroppable(piece, x, y, angle) {
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if 0 < state.Input.StateForKey(ui.KeyDown) {
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s.landingCount += 10
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} else {
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s.landingCount++
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}
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if maxLandingCount <= s.landingCount {
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s.field.AbsorbPiece(piece, x, y, angle)
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s.initCurrentPiece(s.nextPiece)
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s.nextPiece = nil
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s.landingCount = 0
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}
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}
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}
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func (s *GameScene) Draw(context graphics.Context, textures *Textures) {
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context.Fill(0xff, 0xff, 0xff)
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field := textures.GetTexture("empty")
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geoMat := matrix.IdentityGeometry()
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geoMat.Scale(
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float64(fieldWidth)/float64(emptyWidth),
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float64(fieldHeight)/float64(emptyHeight))
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geoMat.Translate(20, 20) // magic number?
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colorMat := matrix.IdentityColor()
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colorMat.Scale(color.RGBA{0, 0, 0, 0x80})
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graphics.DrawWhole(
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context.Texture(field),
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emptyWidth,
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emptyHeight,
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geoMat,
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colorMat)
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geoMat = matrix.IdentityGeometry()
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geoMat.Translate(20, 20)
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s.field.Draw(context, textures, geoMat)
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if s.currentPiece != nil {
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s.currentPiece.Draw(
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context,
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textures,
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20, 20,
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s.currentPieceX,
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s.currentPieceY,
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s.currentPieceAngle)
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}
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}
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