Added sprites & tried out splash animation.

Moveds fonts to separate directory & added corresponding license texts.
Moved console & fps to separte gut (game utility) package.
Added console (view only).

cmd/krampus19/console.go

@@ -0,0 +1,74 @@
+package main
+
+import (
+	"log"
+
+	"opslag.de/schobers/allg5"
+	"opslag.de/schobers/geom"
+	"opslag.de/schobers/krampus19/alui"
+	"opslag.de/schobers/krampus19/gut"
+)
+
+type console struct {
+	alui.ControlBase
+
+	cons *gut.Console
+
+	buffer  *allg5.Bitmap
+	bufferN int
+	height  float32
+	offset  float32
+}
+
+func newConsole(cons *gut.Console) *console {
+	return &console{cons: cons, height: 300}
+}
+
+func (c *console) Render(ctx *alui.Context, bounds geom.RectangleF32) {
+	back := allg5.NewColorAlpha(0, 0, 0, 0x7f)
+	line := allg5.NewColor(0x7f, 0x7f, 0x7f)
+	fore := allg5.NewColor(0xff, 0xff, 0xff)
+
+	c.height = geom.Min32(c.height, bounds.Dy())
+	top := geom.Max32(bounds.Max.Y-c.height, bounds.Min.Y)
+	allg5.DrawFilledRectangle(bounds.Min.X, top, bounds.Max.X, bounds.Max.Y, back)
+	allg5.DrawLine(bounds.Min.X, top, bounds.Max.X, top, line, 1)
+
+	font := ctx.Fonts.Get("console")
+	lineHeight := font.Height() * 1.1
+
+	size := geom.Pt(int(bounds.Dx()-8), int(c.height-8))
+	if c.buffer == nil || c.buffer.Height() != size.Y || c.buffer.Width() != size.X {
+		if c.buffer != nil {
+			c.buffer.Destroy()
+		}
+		buffer, err := allg5.NewVideoBitmap(size.X, size.Y)
+		if err != nil {
+			log.Fatal("Couldn't create new video bitmap")
+		}
+		c.buffer = buffer
+		c.bufferN = -1
+	}
+
+	messages := c.cons.Messages()
+	messagesN := len(messages)
+	if messagesN != c.bufferN {
+		c.buffer.SetAsTarget()
+
+		size := geom.PtF32(float32(size.X), float32(size.Y))
+		totalHeight := lineHeight * float32(messagesN)
+		if totalHeight < size.Y {
+			c.offset = size.Y - totalHeight
+		}
+		messageTop := size.Y - totalHeight - c.offset
+		for _, m := range messages {
+			if messageTop <= size.Y || (messageTop+lineHeight) >= 0 {
+				font.Draw(0, messageTop, fore, allg5.AlignLeft, m)
+			}
+			messageTop += lineHeight
+		}
+		c.bufferN = messagesN
+		ctx.Display.SetAsTarget()
+	}
+	c.buffer.Draw(bounds.Min.X+4, bounds.Max.Y-c.height+4)
+}

cmd/krampus19/context.go

@@ -1,18 +1,33 @@
 package main
 
 import (
+	"time"
+
 	"opslag.de/schobers/allg5"
 	"opslag.de/schobers/fs/vfs"
 )
 
+type Texture struct {
+	*allg5.Bitmap
+
+	Subs map[string]*allg5.Bitmap
+}
+
+func NewTexture(bmp *allg5.Bitmap) Texture {
+	return Texture{Bitmap: bmp, Subs: map[string]*allg5.Bitmap{}}
+}
+
 type Context struct {
 	Resources vfs.CopyDir
-	Bitmaps   map[string]*allg5.Bitmap
+	Textures  map[string]Texture
 	Levels    map[string]level
+	Sprites   map[string]sprite
+
+	Tick time.Duration
 }
 
 func (c *Context) Destroy() {
-	for _, bmp := range c.Bitmaps {
+	for _, bmp := range c.Textures {
 		bmp.Destroy()
 	}
 }

cmd/krampus19/game.go

@@ -1,12 +1,15 @@
 package main
 
 import (
+	"errors"
 	"fmt"
 	"image/png"
+	"log"
 
 	"opslag.de/schobers/allg5"
 	"opslag.de/schobers/fs/vfs"
 	"opslag.de/schobers/krampus19/alui"
+	"opslag.de/schobers/krampus19/gut"
 )
 
 type Game struct {
@@ -15,24 +18,18 @@ type Game struct {
 	main alui.Container
 
 	info  *alui.Overlay
+	cons  *alui.Overlay
 	scene *alui.Overlay
 }
 
-func (g *Game) initUI(disp *allg5.Display, fps *FPS) error {
+func (g *Game) initUI(disp *allg5.Display, cons *gut.Console, fps *gut.FPS) error {
 	disp.SetWindowTitle("Krampushack '19 - Title TBD - by Tharro")
 	ui := alui.NewUI(disp, &g.main)
-	fontPath, err := g.ctx.Resources.Retrieve("OpenSans-Regular.ttf")
-	if err != nil {
-		return err
-	}
-	err = ui.Fonts().LoadFonts(alui.FontDescription{Path: fontPath, Name: "default", Size: 12})
-	if err != nil {
-		return err
-	}
 	g.ui = ui
 	g.info = &alui.Overlay{Proxy: &info{fps: fps}}
-	g.scene = &alui.Overlay{Proxy: &playScene{}, Visible: true}
+	g.cons = &alui.Overlay{Proxy: newConsole(cons)}
-	g.main.Children = append(g.main.Children, g.scene, g.info)
+	g.scene = &alui.Overlay{Proxy: &splash{}, Visible: true}
+	g.main.Children = append(g.main.Children, g.scene, &alui.Container{Children: []alui.Control{g.info, g.cons}})
 	return nil
 }
 
@@ -50,11 +47,31 @@ func (g *Game) loadBitmap(path, name string) error {
 	if err != nil {
 		return err
 	}
-	g.ctx.Bitmaps[name] = bmp
+	g.ctx.Textures[name] = NewTexture(bmp)
 	return nil
 }
 
-func (g *Game) loadBitmaps(pathToName map[string]string) error {
+func (g *Game) loadFonts() error {
+	openSansPath, err := g.ctx.Resources.Retrieve("fonts/OpenSans-Regular.ttf")
+	if err != nil {
+		return err
+	}
+	firaMonoPath, err := g.ctx.Resources.Retrieve("fonts/FiraMono-Regular.ttf")
+	if err != nil {
+		return err
+	}
+	err = g.ui.Fonts().LoadFonts(alui.FontDescription{Path: openSansPath, Name: "default", Size: 12})
+	if err != nil {
+		return err
+	}
+	err = g.ui.Fonts().LoadFonts(alui.FontDescription{Path: firaMonoPath, Name: "console", Size: 12})
+	if err != nil {
+		return err
+	}
+	return nil
+}
+
+func (g *Game) loadTextures(pathToName map[string]string) error {
 	for path, name := range pathToName {
 		err := g.loadBitmap(path, name)
 		if err != nil {
@@ -82,11 +99,40 @@ func (g *Game) loadLevels(names ...string) error {
 	return nil
 }
 
+func (g *Game) loadSprites(names ...string) error {
+	g.ctx.Sprites = map[string]sprite{}
+	for _, name := range names {
+		fileName := fmt.Sprintf("sprites/%s.txt", name)
+		f, err := g.ctx.Resources.Open(fileName)
+		if err != nil {
+			return err
+		}
+		defer f.Close()
+		sprite, err := loadSpriteAsset(f)
+		if err != nil {
+			return err
+		}
+
+		texture, ok := g.ctx.Textures[sprite.texture]
+		if !ok {
+			return errors.New("sprite texture not found")
+		}
+		for _, part := range sprite.parts {
+			sub := part.sub
+			texture.Subs[part.name] = texture.Sub(sub.Min.X, sub.Min.Y, sub.Max.X-sub.Min.X, sub.Max.Y-sub.Min.Y)
+		}
+		g.ctx.Sprites[name] = sprite
+	}
+	return nil
+}
+
 func (g *Game) loadAssets() error {
-	err := g.loadBitmaps(map[string]string{
+	log.Println("Loading textures...")
+	err := g.loadTextures(map[string]string{
 		"basic_tile.png": "basic_tile",
 		"water_tile.png": "water_tile",
 
+		// "dragon.png":            "dragon",
 		"main_character.png":    "main_character",
 		"villain_character.png": "villain_character",
 
@@ -96,16 +142,28 @@ func (g *Game) loadAssets() error {
 	if err != nil {
 		return err
 	}
+	log.Printf("Loaded %d textures.\n", len(g.ctx.Textures))
 
+	log.Println("Loading levels...")
 	err = g.loadLevels("1")
 	if err != nil {
 		return err
 	}
-	return nil
+	log.Printf("Loaded %d levels.\n", len(g.ctx.Levels))
-}
 
-func (g *Game) PlayScene() *playScene {
+	log.Println("Loading fonts...")
-	return g.scene.Proxy.(*playScene)
+	err = g.loadFonts()
+	if err != nil {
+		return err
+	}
+
+	log.Println("Loading sprites")
+	// err = g.loadSprites("dragon")
+	// if err != nil {
+	// 	return err
+	// }
+	log.Printf("Loaded %d sprites.\n", len(g.ctx.Sprites))
+	return nil
 }
 
 func (g *Game) Destroy() {
@@ -113,17 +171,18 @@ func (g *Game) Destroy() {
 	g.ctx.Destroy()
 }
 
-func (g *Game) Init(disp *allg5.Display, res vfs.CopyDir, fps *FPS) error {
+func (g *Game) Init(disp *allg5.Display, res vfs.CopyDir, cons *gut.Console, fps *gut.FPS) error {
-	g.ctx = &Context{Resources: res, Bitmaps: map[string]*allg5.Bitmap{}}
+	log.Print("Initializing game...")
-	if err := g.initUI(disp, fps); err != nil {
+	g.ctx = &Context{Resources: res, Textures: map[string]Texture{}}
+	if err := g.initUI(disp, cons, fps); err != nil {
 		return err
 	}
+	log.Print("Loading assets...")
 	if err := g.loadAssets(); err != nil {
 		return err
 	}
-	scene := g.PlayScene()
+	log.Print("Loaded assets.")
-	scene.init(g.ctx)
+	g.playLevel("1")
-	scene.loadLevel("1")
 	return nil
 }
 
@@ -133,10 +192,25 @@ func (g *Game) Handle(e allg5.Event) {
 		if e.KeyCode == allg5.KeyF3 {
 			g.info.Visible = !g.info.Visible
 		}
+		if e.KeyCode == allg5.KeyF4 {
+			g.cons.Visible = !g.cons.Visible
+		}
 	}
 	g.ui.Handle(e)
 }
 
+func (g *Game) playLevel(l string) {
+	play := &playLevel{ctx: g.ctx}
+	play.loadLevel(l)
+	g.scene.Proxy = play
+}
+
 func (g *Game) Render() {
+	switch scene := g.scene.Proxy.(type) {
+	case *splash:
+		if scene.atEnd {
+			g.playLevel("1")
+		}
+	}
 	g.ui.Render()
 }

cmd/krampus19/info.go

@@ -6,12 +6,13 @@ import (
 	"opslag.de/schobers/allg5"
 	"opslag.de/schobers/geom"
 	"opslag.de/schobers/krampus19/alui"
+	"opslag.de/schobers/krampus19/gut"
 )
 
 type info struct {
 	alui.ControlBase
 
-	fps *FPS
+	fps *gut.FPS
 }
 
 func (i *info) Render(ctx *alui.Context, bounds geom.RectangleF32) {

cmd/krampus19/krampus19.go

@@ -1,13 +1,16 @@
 package main
 
 import (
+	"io"
 	"log"
+	"time"
 
 	rice "github.com/GeertJohan/go.rice"
 	"github.com/spf13/afero"
 	"opslag.de/schobers/allg5"
 	"opslag.de/schobers/fs/ricefs"
 	"opslag.de/schobers/fs/vfs"
+	"opslag.de/schobers/krampus19/gut"
 )
 
 //go:generate rice embed-syso
@@ -26,11 +29,16 @@ func resources() (vfs.CopyDir, error) {
 }
 
 func run() error {
+	cons := &gut.Console{}
+	log.SetOutput(io.MultiWriter(log.Writer(), cons))
+
+	log.Println("Initializing Allegro")
 	err := allg5.Init(allg5.InitAll)
 	if err != nil {
 		return err
 	}
 
+	log.Println("Creating display")
 	disp, err := allg5.NewDisplay(1440, 900, allg5.NewDisplayOptions{Maximized: false, Windowed: true, Resizable: true, Vsync: true})
 	if err != nil {
 		return err
@@ -53,18 +61,22 @@ func run() error {
 	}
 	defer res.Destroy()
 
-	fps := NewFPS()
+	fps := gut.NewFPS()
 	defer fps.Destroy()
 
 	game := &Game{}
-	err = game.Init(disp, res, fps)
+	err = game.Init(disp, res, cons, fps)
 	if err != nil {
 		return err
 	}
 	defer game.Destroy()
 
+	log.Println("Starting game loop")
 	back := allg5.NewColor(0x21, 0x21, 0x21)
+	start := time.Now()
 	for {
+		game.ctx.Tick = time.Now().Sub(start)
+
 		allg5.ClearToColor(back)
 		game.Render()
 		disp.Flip()

cmd/krampus19/level.go

@@ -58,25 +58,16 @@ type level struct {
 
 func loadLevelAsset(r io.Reader) (level, error) {
 	var l level
-	ctx := levelContext{&l, nil}
+	ctx := levelContext{&l}
 	err := parseLines(r, ctx.parse)
 	if err != nil {
 		return level{}, err
 	}
-	if ctx.err != nil {
-		return level{}, ctx.err
-	}
 	return l, nil
 }
 
 type levelContext struct {
 	level *level
-	err   error
-}
-
-func (c *levelContext) emitErr(err error) parseLineFn {
-	c.err = err
-	return nil
 }
 
 func (c *levelContext) parse(p *lineParser) parseLineFn {
@@ -96,14 +87,14 @@ func (c *levelContext) parse(p *lineParser) parseLineFn {
 
 func (c *levelContext) parseContent(p *lineParser) parseLineFn {
 	if p.next() != "level:" {
-		return c.emitErr(errors.New("expected level start"))
+		return p.emitErr(errors.New("expected level start"))
 	}
 	return c.parseRow
 }
 
 func (c *levelContext) parseRow(p *lineParser) parseLineFn {
 	if p.eof() {
-		return c.emitErr(errors.New("unexpected end of file"))
+		return p.emitErr(errors.New("unexpected end of file"))
 	}
 	line := p.next()
 	if line == ":level" {
@@ -112,10 +103,10 @@ func (c *levelContext) parseRow(p *lineParser) parseLineFn {
 	if c.level.height == 0 {
 		c.level.width = len(line) / 2
 	}
-	return c.addRow(line)
+	return c.addRow(p, line)
 }
 
-func (c *levelContext) addRow(line string) parseLineFn {
+func (c *levelContext) addRow(p *lineParser, line string) parseLineFn {
 	var tiles []tile
 	var entities []entity
 	for i := 0; i < len(line); i += 2 {
@@ -125,12 +116,12 @@ func (c *levelContext) addRow(line string) parseLineFn {
 
 	for i, t := range tiles {
 		if !t.IsValid() {
-			return c.emitErr(fmt.Errorf("level contains invalid tile at (%d, %d)", i, c.level.height))
+			return p.emitErr(fmt.Errorf("level contains invalid tile at (%d, %d)", i, c.level.height))
 		}
 	}
 	for i, e := range entities {
 		if !e.IsValid() {
-			return c.emitErr(fmt.Errorf("level contains invalid entity at (%d, %d)", i, c.level.height))
+			return p.emitErr(fmt.Errorf("level contains invalid entity at (%d, %d)", i, c.level.height))
 		}
 	}
 

cmd/krampus19/lineparser.go

@@ -1,6 +1,7 @@
 package main
 
 import (
+	"errors"
 	"io"
 	"io/ioutil"
 	"strings"
@@ -9,8 +10,11 @@ import (
 type lineParser struct {
 	lines []string
 	i     int
+	err   error
 }
 
+var errUnexpectedEnd = errors.New("unexpected end of file")
+
 func (p *lineParser) eof() bool    { return p.i == len(p.lines) }
 func (p *lineParser) peek() string { return p.lines[p.i] }
 func (p *lineParser) next() string {
@@ -19,6 +23,18 @@ func (p *lineParser) next() string {
 	return p.lines[i]
 }
 
+func (p *lineParser) emitErr(err error) parseLineFn {
+	p.err = err
+	return nil
+}
+
+func (p *lineParser) skipSpaceEOF() bool {
+	for !p.eof() && len(strings.TrimSpace(p.peek())) == 0 {
+		p.next()
+	}
+	return p.eof()
+}
+
 type parseLineFn func(p *lineParser) parseLineFn
 
 func parseLines(r io.Reader, fn parseLineFn) error {
@@ -35,5 +51,5 @@ func parseLines(r io.Reader, fn parseLineFn) error {
 	for fn != nil {
 		fn = fn(parser)
 	}
-	return nil
+	return parser.err
 }

cmd/krampus19/playlevel.go

@@ -6,25 +6,23 @@ import (
 	"opslag.de/schobers/krampus19/alui"
 )
 
-type playScene struct {
+type playLevel struct {
 	alui.ControlBase
 
-	ctx   *Context
+	ctx    *Context
-	level level
-
 	offset geom.PointF32
 	scale  float32
+
+	level  level
+	player geom.PointF32
+	moving bool
 }
 
-func (s *playScene) init(ctx *Context) {
+func (s *playLevel) loadLevel(name string) {
-	s.ctx = ctx
-}
-
-func (s *playScene) loadLevel(name string) {
 	s.level = s.ctx.Levels[name]
 }
 
-func (s *playScene) toScreenPos(p geom.Point) geom.PointF32 {
+func (s *playLevel) toScreenPos(p geom.Point) geom.PointF32 {
 	pos := geom.PtF32(float32(p.X)+.5, float32(p.Y)+.5)
 	pos = geom.PtF32(pos.X*148-pos.Y*46, pos.Y*82)
 	pos = geom.PtF32(pos.X*s.scale, pos.Y*s.scale)
@@ -44,7 +42,7 @@ func (s *playScene) toScreenPos(p geom.Point) geom.PointF32 {
 // Offset between horizontal tiles: 148,0
 // Offset between vertical tiles: -46,82
 
-func (s *playScene) Layout(ctx *alui.Context, bounds geom.RectangleF32) {
+func (s *playLevel) Layout(ctx *alui.Context, bounds geom.RectangleF32) {
 	s.scale = bounds.Dy() / 1080
 
 	tilesCenter := geom.PtF32(.5*float32(s.level.width), .5*float32(s.level.height))
@@ -54,25 +52,25 @@ func (s *playScene) Layout(ctx *alui.Context, bounds geom.RectangleF32) {
 	s.offset = geom.PtF32(center.X-tilesCenter.X, center.Y-tilesCenter.Y)
 }
 
-func (s *playScene) Render(ctx *alui.Context, bounds geom.RectangleF32) {
+func (s *playLevel) Render(ctx *alui.Context, bounds geom.RectangleF32) {
-	basicTile := s.ctx.Bitmaps["basic_tile"]
+	basicTile := s.ctx.Textures["basic_tile"]
-	waterTile := s.ctx.Bitmaps["water_tile"]
+	waterTile := s.ctx.Textures["water_tile"]
-	tileBmp := func(t tile) *allg5.Bitmap {
+	tileBmp := func(t tile) Texture {
 		switch t {
 		case tileBasic:
 			return basicTile
 		case tileWater:
 			return waterTile
 		default:
-			return nil
+			return Texture{}
 		}
 	}
 
-	character := s.ctx.Bitmaps["main_character"]
+	character := s.ctx.Textures["main_character"]
-	villain := s.ctx.Bitmaps["villain_character"]
+	villain := s.ctx.Textures["villain_character"]
-	brick := s.ctx.Bitmaps["brick"]
+	brick := s.ctx.Textures["brick"]
-	crate := s.ctx.Bitmaps["crate"]
+	crate := s.ctx.Textures["crate"]
-	entityBmp := func(e entity) *allg5.Bitmap {
+	entityBmp := func(e entity) Texture {
 		switch e {
 		case entityCharacter:
 			return character
@@ -83,7 +81,7 @@ func (s *playScene) Render(ctx *alui.Context, bounds geom.RectangleF32) {
 		case entityCrate:
 			return crate
 		default:
-			return nil
+			return Texture{}
 		}
 	}
 
@@ -94,7 +92,7 @@ func (s *playScene) Render(ctx *alui.Context, bounds geom.RectangleF32) {
 	level := s.level
 	for i, t := range level.tiles {
 		tile := tileBmp(t)
-		if tile == nil {
+		if tile.Bitmap == nil {
 			continue
 		}
 		pos := geom.Pt(i%level.width, i/level.width)
@@ -107,16 +105,16 @@ func (s *playScene) Render(ctx *alui.Context, bounds geom.RectangleF32) {
 
 	for i, e := range level.entities {
 		bmp := entityBmp(e)
-		if bmp == nil {
+		if bmp.Bitmap == nil {
 			continue
 		}
 		pos := geom.Pt(i%level.width, i/level.width)
 		screenPos := s.toScreenPos(pos)
 		screenPos.Y -= 48 * s.scale
-		scale := scale
+		// scale := scale
-		if e == entityCharacter {
+		// if e == entityCharacter {
-			scale *= .4
+		// 	scale *= .4
-		}
+		// }
 		bmp.DrawOptions(screenPos.X, screenPos.Y, allg5.DrawOptions{Center: true, Scale: allg5.NewUniformScale(s.scale * scale)})
 	}
 }

cmd/krampus19/res/fonts/FiraMono-OFL.txt

@@ -0,0 +1,93 @@
+Copyright (c) 2012-2013, The Mozilla Corporation and Telefonica S.A.
+
+This Font Software is licensed under the SIL Open Font License, Version 1.1.
+This license is copied below, and is also available with a FAQ at:
+http://scripts.sil.org/OFL
+
+
+-----------------------------------------------------------
+SIL OPEN FONT LICENSE Version 1.1 - 26 February 2007
+-----------------------------------------------------------
+
+PREAMBLE
+The goals of the Open Font License (OFL) are to stimulate worldwide
+development of collaborative font projects, to support the font creation
+efforts of academic and linguistic communities, and to provide a free and
+open framework in which fonts may be shared and improved in partnership
+with others.
+
+The OFL allows the licensed fonts to be used, studied, modified and
+redistributed freely as long as they are not sold by themselves. The
+fonts, including any derivative works, can be bundled, embedded, 
+redistributed and/or sold with any software provided that any reserved
+names are not used by derivative works. The fonts and derivatives,
+however, cannot be released under any other type of license. The
+requirement for fonts to remain under this license does not apply
+to any document created using the fonts or their derivatives.
+
+DEFINITIONS
+"Font Software" refers to the set of files released by the Copyright
+Holder(s) under this license and clearly marked as such. This may
+include source files, build scripts and documentation.
+
+"Reserved Font Name" refers to any names specified as such after the
+copyright statement(s).
+
+"Original Version" refers to the collection of Font Software components as
+distributed by the Copyright Holder(s).
+
+"Modified Version" refers to any derivative made by adding to, deleting,
+or substituting -- in part or in whole -- any of the components of the
+Original Version, by changing formats or by porting the Font Software to a
+new environment.
+
+"Author" refers to any designer, engineer, programmer, technical
+writer or other person who contributed to the Font Software.
+
+PERMISSION & CONDITIONS
+Permission is hereby granted, free of charge, to any person obtaining
+a copy of the Font Software, to use, study, copy, merge, embed, modify,
+redistribute, and sell modified and unmodified copies of the Font
+Software, subject to the following conditions:
+
+1) Neither the Font Software nor any of its individual components,
+in Original or Modified Versions, may be sold by itself.
+
+2) Original or Modified Versions of the Font Software may be bundled,
+redistributed and/or sold with any software, provided that each copy
+contains the above copyright notice and this license. These can be
+included either as stand-alone text files, human-readable headers or
+in the appropriate machine-readable metadata fields within text or
+binary files as long as those fields can be easily viewed by the user.
+
+3) No Modified Version of the Font Software may use the Reserved Font
+Name(s) unless explicit written permission is granted by the corresponding
+Copyright Holder. This restriction only applies to the primary font name as
+presented to the users.
+
+4) The name(s) of the Copyright Holder(s) or the Author(s) of the Font
+Software shall not be used to promote, endorse or advertise any
+Modified Version, except to acknowledge the contribution(s) of the
+Copyright Holder(s) and the Author(s) or with their explicit written
+permission.
+
+5) The Font Software, modified or unmodified, in part or in whole,
+must be distributed entirely under this license, and must not be
+distributed under any other license. The requirement for fonts to
+remain under this license does not apply to any document created
+using the Font Software.
+
+TERMINATION
+This license becomes null and void if any of the above conditions are
+not met.
+
+DISCLAIMER
+THE FONT SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO ANY WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT
+OF COPYRIGHT, PATENT, TRADEMARK, OR OTHER RIGHT. IN NO EVENT SHALL THE
+COPYRIGHT HOLDER BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+INCLUDING ANY GENERAL, SPECIAL, INDIRECT, INCIDENTAL, OR CONSEQUENTIAL
+DAMAGES, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+FROM, OUT OF THE USE OR INABILITY TO USE THE FONT SOFTWARE OR FROM
+OTHER DEALINGS IN THE FONT SOFTWARE.

cmd/krampus19/res/fonts/OpenSans-LICENSE.txt

@@ -0,0 +1,202 @@
+
+                                 Apache License
+                           Version 2.0, January 2004
+                        http://www.apache.org/licenses/
+
+   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+   1. Definitions.
+
+      "License" shall mean the terms and conditions for use, reproduction,
+      and distribution as defined by Sections 1 through 9 of this document.
+
+      "Licensor" shall mean the copyright owner or entity authorized by
+      the copyright owner that is granting the License.
+
+      "Legal Entity" shall mean the union of the acting entity and all
+      other entities that control, are controlled by, or are under common
+      control with that entity. For the purposes of this definition,
+      "control" means (i) the power, direct or indirect, to cause the
+      direction or management of such entity, whether by contract or
+      otherwise, or (ii) ownership of fifty percent (50%) or more of the
+      outstanding shares, or (iii) beneficial ownership of such entity.
+
+      "You" (or "Your") shall mean an individual or Legal Entity
+      exercising permissions granted by this License.
+
+      "Source" form shall mean the preferred form for making modifications,
+      including but not limited to software source code, documentation
+      source, and configuration files.
+
+      "Object" form shall mean any form resulting from mechanical
+      transformation or translation of a Source form, including but
+      not limited to compiled object code, generated documentation,
+      and conversions to other media types.
+
+      "Work" shall mean the work of authorship, whether in Source or
+      Object form, made available under the License, as indicated by a
+      copyright notice that is included in or attached to the work
+      (an example is provided in the Appendix below).
+
+      "Derivative Works" shall mean any work, whether in Source or Object
+      form, that is based on (or derived from) the Work and for which the
+      editorial revisions, annotations, elaborations, or other modifications
+      represent, as a whole, an original work of authorship. For the purposes
+      of this License, Derivative Works shall not include works that remain
+      separable from, or merely link (or bind by name) to the interfaces of,
+      the Work and Derivative Works thereof.
+
+      "Contribution" shall mean any work of authorship, including
+      the original version of the Work and any modifications or additions
+      to that Work or Derivative Works thereof, that is intentionally
+      submitted to Licensor for inclusion in the Work by the copyright owner
+      or by an individual or Legal Entity authorized to submit on behalf of
+      the copyright owner. For the purposes of this definition, "submitted"
+      means any form of electronic, verbal, or written communication sent
+      to the Licensor or its representatives, including but not limited to
+      communication on electronic mailing lists, source code control systems,
+      and issue tracking systems that are managed by, or on behalf of, the
+      Licensor for the purpose of discussing and improving the Work, but
+      excluding communication that is conspicuously marked or otherwise
+      designated in writing by the copyright owner as "Not a Contribution."
+
+      "Contributor" shall mean Licensor and any individual or Legal Entity
+      on behalf of whom a Contribution has been received by Licensor and
+      subsequently incorporated within the Work.
+
+   2. Grant of Copyright License. Subject to the terms and conditions of
+      this License, each Contributor hereby grants to You a perpetual,
+      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+      copyright license to reproduce, prepare Derivative Works of,
+      publicly display, publicly perform, sublicense, and distribute the
+      Work and such Derivative Works in Source or Object form.
+
+   3. Grant of Patent License. Subject to the terms and conditions of
+      this License, each Contributor hereby grants to You a perpetual,
+      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+      (except as stated in this section) patent license to make, have made,
+      use, offer to sell, sell, import, and otherwise transfer the Work,
+      where such license applies only to those patent claims licensable
+      by such Contributor that are necessarily infringed by their
+      Contribution(s) alone or by combination of their Contribution(s)
+      with the Work to which such Contribution(s) was submitted. If You
+      institute patent litigation against any entity (including a
+      cross-claim or counterclaim in a lawsuit) alleging that the Work
+      or a Contribution incorporated within the Work constitutes direct
+      or contributory patent infringement, then any patent licenses
+      granted to You under this License for that Work shall terminate
+      as of the date such litigation is filed.
+
+   4. Redistribution. You may reproduce and distribute copies of the
+      Work or Derivative Works thereof in any medium, with or without
+      modifications, and in Source or Object form, provided that You
+      meet the following conditions:
+
+      (a) You must give any other recipients of the Work or
+          Derivative Works a copy of this License; and
+
+      (b) You must cause any modified files to carry prominent notices
+          stating that You changed the files; and
+
+      (c) You must retain, in the Source form of any Derivative Works
+          that You distribute, all copyright, patent, trademark, and
+          attribution notices from the Source form of the Work,
+          excluding those notices that do not pertain to any part of
+          the Derivative Works; and
+
+      (d) If the Work includes a "NOTICE" text file as part of its
+          distribution, then any Derivative Works that You distribute must
+          include a readable copy of the attribution notices contained
+          within such NOTICE file, excluding those notices that do not
+          pertain to any part of the Derivative Works, in at least one
+          of the following places: within a NOTICE text file distributed
+          as part of the Derivative Works; within the Source form or
+          documentation, if provided along with the Derivative Works; or,
+          within a display generated by the Derivative Works, if and
+          wherever such third-party notices normally appear. The contents
+          of the NOTICE file are for informational purposes only and
+          do not modify the License. You may add Your own attribution
+          notices within Derivative Works that You distribute, alongside
+          or as an addendum to the NOTICE text from the Work, provided
+          that such additional attribution notices cannot be construed
+          as modifying the License.
+
+      You may add Your own copyright statement to Your modifications and
+      may provide additional or different license terms and conditions
+      for use, reproduction, or distribution of Your modifications, or
+      for any such Derivative Works as a whole, provided Your use,
+      reproduction, and distribution of the Work otherwise complies with
+      the conditions stated in this License.
+
+   5. Submission of Contributions. Unless You explicitly state otherwise,
+      any Contribution intentionally submitted for inclusion in the Work
+      by You to the Licensor shall be under the terms and conditions of
+      this License, without any additional terms or conditions.
+      Notwithstanding the above, nothing herein shall supersede or modify
+      the terms of any separate license agreement you may have executed
+      with Licensor regarding such Contributions.
+
+   6. Trademarks. This License does not grant permission to use the trade
+      names, trademarks, service marks, or product names of the Licensor,
+      except as required for reasonable and customary use in describing the
+      origin of the Work and reproducing the content of the NOTICE file.
+
+   7. Disclaimer of Warranty. Unless required by applicable law or
+      agreed to in writing, Licensor provides the Work (and each
+      Contributor provides its Contributions) on an "AS IS" BASIS,
+      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+      implied, including, without limitation, any warranties or conditions
+      of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
+      PARTICULAR PURPOSE. You are solely responsible for determining the
+      appropriateness of using or redistributing the Work and assume any
+      risks associated with Your exercise of permissions under this License.
+
+   8. Limitation of Liability. In no event and under no legal theory,
+      whether in tort (including negligence), contract, or otherwise,
+      unless required by applicable law (such as deliberate and grossly
+      negligent acts) or agreed to in writing, shall any Contributor be
+      liable to You for damages, including any direct, indirect, special,
+      incidental, or consequential damages of any character arising as a
+      result of this License or out of the use or inability to use the
+      Work (including but not limited to damages for loss of goodwill,
+      work stoppage, computer failure or malfunction, or any and all
+      other commercial damages or losses), even if such Contributor
+      has been advised of the possibility of such damages.
+
+   9. Accepting Warranty or Additional Liability. While redistributing
+      the Work or Derivative Works thereof, You may choose to offer,
+      and charge a fee for, acceptance of support, warranty, indemnity,
+      or other liability obligations and/or rights consistent with this
+      License. However, in accepting such obligations, You may act only
+      on Your own behalf and on Your sole responsibility, not on behalf
+      of any other Contributor, and only if You agree to indemnify,
+      defend, and hold each Contributor harmless for any liability
+      incurred by, or claims asserted against, such Contributor by reason
+      of your accepting any such warranty or additional liability.
+
+   END OF TERMS AND CONDITIONS
+
+   APPENDIX: How to apply the Apache License to your work.
+
+      To apply the Apache License to your work, attach the following
+      boilerplate notice, with the fields enclosed by brackets "[]"
+      replaced with your own identifying information. (Don't include
+      the brackets!)  The text should be enclosed in the appropriate
+      comment syntax for the file format. We also recommend that a
+      file or class name and description of purpose be included on the
+      same "printed page" as the copyright notice for easier
+      identification within third-party archives.
+
+   Copyright [yyyy] [name of copyright owner]
+
+   Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
+   You may obtain a copy of the License at
+
+       http://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.

cmd/krampus19/res/levels/level1.txt

@@ -4,8 +4,8 @@ level:
 ._._#_._#_._._._._._
 ._._#_#_#_._._._._._
 ._._#_._#B._._._._._
-._#@#_#_#_~_~_#_#X._
+._#@#_#_#_~_#_#_#X._
-._._._._~_~_~_#_._._
+._._._._~_~_#_._._._
-._._._#_#_#_#_#_._._
+._._._#_#_#_#_._._._
 ._._._._._._._._._._
 :level

cmd/krampus19/res/sprites/dragon.txt

@@ -0,0 +1,28 @@
+sprite:
+texture: dragon
+
+part:
+name: body
+sub_texture: 0,0,2107,1284
+anchor: 1065,594
+:part
+
+part:
+name: foot
+sub_texture: 42,1345,529,856
+anchor: 386,1283
+:part
+
+part:
+name: upper_wing
+sub_texture: 2112,39,1080,651
+anchor: 2413,644
+:part
+
+part:
+name: lower_wing
+sub_texture: 2170,764,1030,736
+anchor: 2658,799
+:part
+
+:sprite

cmd/krampus19/splash.go

@@ -1,7 +1,45 @@
 package main
 
-import "opslag.de/schobers/krampus19/alui"
+import (
+	"math"
+	"time"
+
+	"opslag.de/schobers/allg5"
+
+	"opslag.de/schobers/geom"
+	"opslag.de/schobers/krampus19/alui"
+)
 
 type splash struct {
 	alui.Container
+
+	ctx   *Context
+	atEnd bool
+
+	tick time.Duration
+}
+
+func (s *splash) Render(ctx *alui.Context, bounds geom.RectangleF32) {
+	var dragon = s.ctx.Sprites["dragon"]
+
+	var texture = s.ctx.Textures[dragon.texture]
+	var body = texture.Subs["body"]
+	var upperWing = texture.Subs["upper_wing"]
+	var lowerWing = texture.Subs["lower_wing"]
+	var foot = texture.Subs["foot"]
+
+	scale := bounds.Dy() / 1600
+
+	var repeat = 2 * time.Second / time.Millisecond
+	var tick = float64((s.ctx.Tick / time.Millisecond) % repeat)
+	flap := .5*float32(math.Cos(tick*2*math.Pi/float64(repeat))) + .5 // [0..1]
+	upperFlap := flap*.75 + .25                                       // [.25..1]
+	lowerFlap := flap*.5 + .5                                         // [.5..1]
+
+	body.DrawOptions(0, 0, allg5.DrawOptions{Scale: allg5.NewUniformScale(scale)})
+	foot.DrawOptions(750*scale, 500*scale, allg5.DrawOptions{Scale: allg5.NewUniformScale(scale)})
+
+	var upperWingOffset = float32(upperWing.Height()) * scale * (1 - flap) * .8
+	upperWing.DrawOptions(750*scale, -100*scale+upperWingOffset, allg5.DrawOptions{Scale: allg5.NewScale(scale, scale*upperFlap)})
+	lowerWing.DrawOptions(750*scale, -100*scale+upperWingOffset*.95, allg5.DrawOptions{Scale: allg5.NewScale(scale, scale*lowerFlap)})
 }

cmd/krampus19/sprite.go

@@ -0,0 +1,126 @@
+package main
+
+import (
+	"errors"
+	"io"
+	"strconv"
+	"strings"
+
+	"opslag.de/schobers/geom"
+)
+
+type sprite struct {
+	texture string
+	parts   []spritePart
+}
+
+type spritePart struct {
+	name   string
+	sub    geom.Rectangle
+	anchor geom.Point
+}
+
+func loadSpriteAsset(r io.Reader) (sprite, error) {
+	var l sprite
+	ctx := spriteContext{&l, nil}
+	err := parseLines(r, ctx.parse)
+	if err != nil {
+		return sprite{}, err
+	}
+	return l, nil
+}
+
+type spriteContext struct {
+	sprite *sprite
+	part   *spritePart
+}
+
+func (c *spriteContext) parse(p *lineParser) parseLineFn {
+	if p.skipSpaceEOF() {
+		return nil
+	}
+	line := p.peek()
+	switch {
+	case strings.HasPrefix(line, "sprite:"):
+		p.next()
+		return c.parseContent
+	default:
+		return nil
+	}
+}
+
+func (c *spriteContext) parseContent(p *lineParser) parseLineFn {
+	const partTag = "part:"
+	const textureTag = "texture:"
+	const spriteEndTag = ":sprite"
+	if p.skipSpaceEOF() {
+		return p.emitErr(errUnexpectedEnd)
+	}
+	line := p.peek()
+	switch {
+	case strings.HasPrefix(line, textureTag):
+		c.sprite.texture = strings.TrimSpace(line[len(textureTag):])
+		p.next()
+		return c.parseContent
+	case line == partTag:
+		p.next()
+		c.part = &spritePart{}
+		return c.parsePart
+	case line == spriteEndTag:
+		return nil
+	}
+	return p.emitErr(errors.New("unexpected content of sprite"))
+}
+
+func (c *spriteContext) parsePart(p *lineParser) parseLineFn {
+	mustAtois := func(s ...string) []int {
+		res := make([]int, len(s))
+		var err error
+		for i, s := range s {
+			res[i], err = strconv.Atoi(s)
+			if err != nil {
+				panic("string does not represent an integer")
+			}
+		}
+		return res
+	}
+	mustCoords := func(s string) []int {
+		coords := strings.Split(strings.TrimSpace(s), ",")
+		return mustAtois(coords...)
+	}
+	const nameTag = "name:"
+	const subTextureTag = "sub_texture:"
+	const anchorTag = "anchor:"
+	const partEndTag = ":part"
+	if p.skipSpaceEOF() {
+		return p.emitErr(errUnexpectedEnd)
+	}
+	line := p.peek()
+	switch {
+	case strings.HasPrefix(line, nameTag):
+		c.part.name = strings.TrimSpace(line[len(nameTag):])
+		p.next()
+		return c.parsePart
+	case strings.HasPrefix(line, subTextureTag):
+		var coords = mustCoords(line[len(subTextureTag):])
+		if len(coords) != 4 {
+			panic("expected four coordinates (min x, min y, size x, size y)")
+		}
+		c.part.sub = geom.Rect(coords[0], coords[1], coords[0]+coords[2], coords[1]+coords[3])
+		p.next()
+		return c.parsePart
+	case strings.HasPrefix(line, anchorTag):
+		var coords = mustCoords(line[len(anchorTag):])
+		if len(coords) != 2 {
+			panic("expected two coordinates (min x, min y)")
+		}
+		c.part.anchor = geom.Pt(coords[0], coords[1])
+		p.next()
+		return c.parsePart
+	case line == partEndTag:
+		c.sprite.parts = append(c.sprite.parts, *c.part)
+		p.next()
+		return c.parseContent
+	}
+	return p.emitErr(errors.New("unexpected content of part"))
+}

gut/console.go

@@ -0,0 +1,21 @@
+package gut
+
+import (
+	"bytes"
+	"io"
+)
+
+var _ io.Writer = &Console{}
+
+type Console struct {
+	messages []string
+}
+
+func (c *Console) Write(p []byte) (int, error) {
+	c.messages = append(c.messages, string(bytes.TrimRight(p, "\r\n")))
+	return len(p), nil
+}
+
+func (c *Console) Messages() []string {
+	return c.messages
+}

gut/fps.go

@@ -1,4 +1,4 @@
-package main
+package gut
 
 import "time"