/
game.go
193 lines (175 loc) · 5.2 KB
/
game.go
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package main
import (
"fmt"
"github.com/syndr0m/mygameengine"
"github.com/syndr0m/mygameengine/image"
)
const IMG_BLOCK_01 string = "assets/images/block-01.png"
const IMG_BLOCK_02 string = "assets/images/block-02.png"
const IMG_BLOCK_03 string = "assets/images/block-03.png"
const IMG_BLOCK_04 string = "assets/images/block-04.png"
const IMG_BLOCK_05 string = "assets/images/block-05.png"
const IMG_BLOCK_06 string = "assets/images/block-06.png"
const BLOCK_SIZE uint = 27
func keyHandler(world *World) func(int) {
return func(key int) {
fmt.Println(mygameengine.FOO)
switch key {
case mygameengine.KEY_RIGHT:
fmt.Println("move right")
world.Right()
case mygameengine.KEY_LEFT:
fmt.Println("move left")
world.Left()
case mygameengine.KEY_DOWN:
fmt.Println("move down")
world.Down()
case mygameengine.KEY_SPACE:
fmt.Println("drop")
world.Drop()
case mygameengine.KEY_CTRL_RIGHT, mygameengine.KEY_UP:
fmt.Println("rotate right")
world.RotateRight()
case mygameengine.KEY_CTRL_LEFT:
world.RotateLeft()
}
fmt.Println("game: KEY DOWN", key)
}
}
func drawGameBackground(screen *image.Image) {
screen.DrawRectangle(0, 0, 640, 480, mygameengine.COLOR_BLACK)
}
func drawGameGrid(screen *image.Image, world *World, engine *mygameengine.MyGameEngine) {
gridWidth := world.GetGridWidth()
gridHeight := world.GetGridHeight()
blocks := world.GetGrid()
for y := uint(0); y < gridHeight; y++ {
for x := uint(0); x < gridWidth; x++ {
if blocks[y][x] != nil {
image := blockToImage(blocks[y][x], engine)
screen.BlitAt(image, int(BLOCK_SIZE+x*BLOCK_SIZE), int(y*BLOCK_SIZE))
}
}
}
}
func drawGameGridBorders(screen *image.Image, world *World, engine *mygameengine.MyGameEngine) {
gridWidth := world.GetGridWidth()
gridHeight := world.GetGridHeight()
for y := uint(0); y < gridHeight; y++ {
screen.BlitAt(engine.Assets().Get(IMG_BLOCK_05), 0, int(y*BLOCK_SIZE))
screen.BlitAt(engine.Assets().Get(IMG_BLOCK_06), int(gridWidth*BLOCK_SIZE+BLOCK_SIZE), int(y*BLOCK_SIZE))
}
for x := uint(0); x < gridWidth+2; x++ {
screen.BlitAt(engine.Assets().Get(IMG_BLOCK_06), int(x*BLOCK_SIZE), int(gridHeight*BLOCK_SIZE))
}
}
func drawGameCurrentPiece(screen *image.Image, world *World, engine *mygameengine.MyGameEngine) {
piece := world.GetPiece()
pieceBlocks := piece.GetBlocks()
pieceSize := int(piece.GetSize())
pieceY := world.GetPieceY()
pieceX := world.GetPieceX()
for y := 0; y < pieceSize; y++ {
for x := 0; x < pieceSize; x++ {
if pieceBlocks[y][x] != nil {
image := blockToImage(pieceBlocks[y][x], engine)
screen.BlitAt(
image,
int(BLOCK_SIZE+uint(pieceX+x)*BLOCK_SIZE),
int(uint(pieceY+y)*BLOCK_SIZE),
)
}
}
}
}
func drawGameNextPiece(screen *image.Image, world *World, engine *mygameengine.MyGameEngine) {
piece := world.GetNextPiece()
pieceBlocks := piece.GetBlocks()
pieceSize := piece.GetSize()
marginLeft := uint(15)
marginTop := uint(8)
width := uint(6)
// border
for y := uint(0); y < width; y++ {
for x := uint(0); x < width; x++ {
if x == 0 || y == 0 || x == 5 || y == 5 {
screen.BlitAt(
engine.Assets().Get(IMG_BLOCK_05),
int(BLOCK_SIZE*marginLeft+uint(x)*BLOCK_SIZE),
int(BLOCK_SIZE*marginTop+uint(y)*BLOCK_SIZE),
)
}
}
}
// piece
for y := uint(0); y < pieceSize; y++ {
for x := uint(0); x < pieceSize; x++ {
if pieceBlocks[y][x] != nil {
image := blockToImage(pieceBlocks[y][x], engine)
screen.BlitAt(
image,
int(BLOCK_SIZE*(marginLeft+1)+uint(x)*BLOCK_SIZE),
int(BLOCK_SIZE*(marginTop+1)+uint(y)*BLOCK_SIZE),
)
}
}
}
}
func drawGameFlash(screen *image.Image, flash int) {
white := mygameengine.COLOR_WHITE
white.A = uint8(25 * flash)
screen.DrawRectangle(0, 0, 640, 480, white)
}
func repaintHandler(engine *mygameengine.MyGameEngine, world *World) func(*image.Image) {
// flash effect setup
flash := 0
world.OnDeleted(func(lines uint) {
flash = 10
})
return func(screen *image.Image) {
drawGameBackground(screen)
drawGameGrid(screen, world, engine)
drawGameGridBorders(screen, world, engine)
drawGameCurrentPiece(screen, world, engine)
drawGameNextPiece(screen, world, engine)
// flash effect on line deletion
if flash > 0 {
drawGameFlash(screen, flash)
flash--
}
}
}
func loadAssets(engine *mygameengine.MyGameEngine) {
engine.Assets().Png(IMG_BLOCK_01)
engine.Assets().Png(IMG_BLOCK_02)
engine.Assets().Png(IMG_BLOCK_03)
engine.Assets().Png(IMG_BLOCK_04)
engine.Assets().Png(IMG_BLOCK_05)
engine.Assets().Png(IMG_BLOCK_06)
}
func blockToImage(block *Block, engine *mygameengine.MyGameEngine) *image.Image {
switch block.GetShape() {
case 1:
return engine.Assets().Get(IMG_BLOCK_01)
case 2:
return engine.Assets().Get(IMG_BLOCK_02)
case 3:
return engine.Assets().Get(IMG_BLOCK_03)
case 4:
return engine.Assets().Get(IMG_BLOCK_04)
}
return nil
}
func Game(engine *mygameengine.MyGameEngine) *mygameengine.Board {
loadAssets(engine)
gameBoard := mygameengine.NewBoard()
world := NewWorld()
world.OnGameOver(func() {
world.Stop()
engine.Boards().SetCurrent(engine.Boards().Get("intro"))
})
gameBoard.OnStart(world.Start)
gameBoard.OnKeyDown(keyHandler(world))
gameBoard.OnRepaint(repaintHandler(engine, world))
return gameBoard
}