A card game engine for TCGs, primarily Magic: The Gathering but with support for others
Adding an events struct and text drawing
authored by
Cass Unterholzner
and committed by
Tangled
842e55db
f1d8b1d3
+71
-25
+11
game/events.go
+11
game/events.go
+36
-18
game/game.go
+36
-18
game/game.go
···
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package game
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import (
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"bytes"
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"image"
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"image/color"
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"github.com/hajimehoshi/ebiten/v2"
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+
"github.com/hajimehoshi/ebiten/v2/examples/resources/fonts"
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"github.com/hajimehoshi/ebiten/v2/text/v2"
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)
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type Game struct {
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state GameState
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cards map[CardDefId]Card
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events []interface{}
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state GameState
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cards map[CardDefId]Card
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events []Event
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fontSource *text.GoTextFaceSource
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fontFace *text.GoTextFace
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}
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var (
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whiteImage = ebiten.NewImage(3, 3)
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)
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func NewGame(player_names []string) Game {
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func NewGame(player_names []string) (Game, error) {
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whiteImage.Fill(color.White)
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return Game{
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state: NewGameState(player_names),
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cards: make(map[CardDefId]Card),
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events: make([]interface{}, 0),
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fontSource, err := text.NewGoTextFaceSource(bytes.NewReader(fonts.MPlus1pRegular_ttf))
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if err != nil {
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return Game{}, err
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}
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+
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game := Game{
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state: NewGameState(player_names),
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cards: make(map[CardDefId]Card),
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events: make([]Event, 0),
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fontSource: fontSource,
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fontFace: &text.GoTextFace{
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Source: fontSource,
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Size: 14,
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},
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}
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return game, nil
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}
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func (g *Game) Update() error {
···
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op := &ebiten.DrawTrianglesOptions{}
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op.Address = ebiten.AddressUnsafe
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rectImage := whiteImage.SubImage(image.Rect(1, 1, 2, 2)).(*ebiten.Image)
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DrawRect(1770, 860, 150, 220, rectImage, screen, op, &area_labels[0]) // Command
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DrawRect(1620, 860, 150, 220, rectImage, screen, op, &area_labels[1]) // Exile
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DrawRect(1470, 860, 150, 220, rectImage, screen, op, &area_labels[2]) // Graveyard
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DrawRect(1320, 860, 150, 220, rectImage, screen, op, &area_labels[3]) // Library
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DrawRect(200, 860, 1120, 220, rectImage, screen, op, &area_labels[4]) // Hand
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DrawRect(0, 860, 200, 220, rectImage, screen, op, &area_labels[5]) // Resource Pool / Status Counters
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DrawRect(200, 0, 1720, 430, rectImage, screen, op, &area_labels[6]) // Battlefield (Lands)
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DrawRect(200, 430, 1720, 430, rectImage, screen, op, &area_labels[7]) // Battlefield (Non-Lands)
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DrawRect(0, 430, 200, 430, rectImage, screen, op, &area_labels[8]) // Life / Commander Damage
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DrawRect(0, 0, 200, 430, rectImage, screen, op, &area_labels[9]) // Player Name / Icon
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DrawRect(1770, 860, 150, 220, rectImage, screen, op, &area_labels[0], g.fontFace) // Command
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DrawRect(1620, 860, 150, 220, rectImage, screen, op, &area_labels[1], g.fontFace) // Exile
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DrawRect(1470, 860, 150, 220, rectImage, screen, op, &area_labels[2], g.fontFace) // Graveyard
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DrawRect(1320, 860, 150, 220, rectImage, screen, op, &area_labels[3], g.fontFace) // Library
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DrawRect(200, 860, 1120, 220, rectImage, screen, op, &area_labels[4], g.fontFace) // Hand
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DrawRect(0, 860, 200, 220, rectImage, screen, op, &area_labels[5], g.fontFace) // Resource Pool / Status Counters
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DrawRect(200, 430, 1720, 430, rectImage, screen, op, &area_labels[6], g.fontFace) // Battlefield (Lands)
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DrawRect(200, 0, 1720, 430, rectImage, screen, op, &area_labels[7], g.fontFace) // Battlefield (Non-Lands)
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DrawRect(0, 430, 200, 430, rectImage, screen, op, &area_labels[8], g.fontFace) // Life / Commander Damage
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DrawRect(0, 0, 200, 430, rectImage, screen, op, &area_labels[9], g.fontFace) // Player Name / Icon
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}
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func (g *Game) Layout(outsideWidth, outsideHeight int) (screenWidth, screenHeight int) {
+9
-6
game/utils.go
+9
-6
game/utils.go
···
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package game
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import (
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"fmt"
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"github.com/hajimehoshi/ebiten/v2"
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"github.com/hajimehoshi/ebiten/v2/text/v2"
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)
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var (
···
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}
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)
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func DrawRect(x, y, w, h int, image *ebiten.Image, screen *ebiten.Image, op *ebiten.DrawTrianglesOptions, text *string) {
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func DrawRect(x, y, w, h int, image *ebiten.Image, screen *ebiten.Image, op *ebiten.DrawTrianglesOptions, rectText *string, fontFace *text.GoTextFace) {
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vertices := []ebiten.Vertex{
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{
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DstX: float32(x),
···
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screen.DrawTriangles(vertices, indices, image, op)
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if text != nil {
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// draw text
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fmt.Printf("Drawing %s\n", *text)
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if rectText != nil {
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txtOp := &text.DrawOptions{}
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txtOp.GeoM.Translate((float64(w)/2.0)+float64(x), (float64(h)/2.0)+float64(y))
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txtOp.ColorScale.SetR(0.0)
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txtOp.ColorScale.SetG(0.0)
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txtOp.ColorScale.SetB(0.0)
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text.Draw(screen, *rectText, fontFace, txtOp)
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}
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}
+4
go.mod
+4
go.mod
···
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github.com/ebitengine/gomobile v0.0.0-20250923094054-ea854a63cce1 // indirect
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github.com/ebitengine/hideconsole v1.0.0 // indirect
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github.com/ebitengine/purego v0.9.0 // indirect
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github.com/go-text/typesetting v0.3.0 // indirect
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github.com/google/uuid v1.6.0 // indirect
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github.com/jezek/xgb v1.1.1 // indirect
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github.com/rivo/uniseg v0.4.7 // indirect
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golang.org/x/image v0.31.0 // indirect
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golang.org/x/sync v0.17.0 // indirect
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golang.org/x/sys v0.36.0 // indirect
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golang.org/x/text v0.29.0 // indirect
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)
+6
go.sum
+6
go.sum
···
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github.com/ebitengine/hideconsole v1.0.0/go.mod h1:hTTBTvVYWKBuxPr7peweneWdkUwEuHuB3C1R/ielR1A=
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github.com/ebitengine/purego v0.9.0 h1:mh0zpKBIXDceC63hpvPuGLiJ8ZAa3DfrFTudmfi8A4k=
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github.com/ebitengine/purego v0.9.0/go.mod h1:iIjxzd6CiRiOG0UyXP+V1+jWqUXVjPKLAI0mRfJZTmQ=
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github.com/go-text/typesetting v0.3.0 h1:OWCgYpp8njoxSRpwrdd1bQOxdjOXDj9Rqart9ML4iF4=
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github.com/go-text/typesetting v0.3.0/go.mod h1:qjZLkhRgOEYMhU9eHBr3AR4sfnGJvOXNLt8yRAySFuY=
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github.com/google/uuid v1.6.0 h1:NIvaJDMOsjHA8n1jAhLSgzrAzy1Hgr+hNrb57e+94F0=
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github.com/google/uuid v1.6.0/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo=
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github.com/hajimehoshi/ebiten/v2 v2.9.9 h1:JdDag6Ndj12iD4lxQGG8kbsrh7ssj4Sbzth6r929H/M=
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github.com/hajimehoshi/ebiten/v2 v2.9.9/go.mod h1:DAt4tnkYYpCvu3x9i1X/nK/vOruNXIlYq/tBXxnhrXM=
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github.com/jezek/xgb v1.1.1 h1:bE/r8ZZtSv7l9gk6nU0mYx51aXrvnyb44892TwSaqS4=
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github.com/jezek/xgb v1.1.1/go.mod h1:nrhwO0FX/enq75I7Y7G8iN1ubpSGZEiA3v9e9GyRFlk=
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+
github.com/rivo/uniseg v0.4.7 h1:WUdvkW8uEhrYfLC4ZzdpI2ztxP1I582+49Oc5Mq64VQ=
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github.com/rivo/uniseg v0.4.7/go.mod h1:FN3SvrM+Zdj16jyLfmOkMNblXMcoc8DfTHruCPUcx88=
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golang.org/x/image v0.31.0 h1:mLChjE2MV6g1S7oqbXC0/UcKijjm5fnJLUYKIYrLESA=
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golang.org/x/image v0.31.0/go.mod h1:R9ec5Lcp96v9FTF+ajwaH3uGxPH4fKfHHAVbUILxghA=
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golang.org/x/sync v0.17.0 h1:l60nONMj9l5drqw6jlhIELNv9I0A4OFgRsG9k2oT9Ug=
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golang.org/x/sync v0.17.0/go.mod h1:9KTHXmSnoGruLpwFjVSX0lNNA75CykiMECbovNTZqGI=
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golang.org/x/sys v0.36.0 h1:KVRy2GtZBrk1cBYA7MKu5bEZFxQk4NIDV6RLVcC8o0k=
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golang.org/x/sys v0.36.0/go.mod h1:OgkHotnGiDImocRcuBABYBEXf8A9a87e/uXjp9XT3ks=
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golang.org/x/text v0.29.0 h1:1neNs90w9YzJ9BocxfsQNHKuAT4pkghyXc4nhZ6sJvk=
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golang.org/x/text v0.29.0/go.mod h1:7MhJOA9CD2qZyOKYazxdYMF85OwPdEr9jTtBpO7ydH4=
+5
-1
main.go
+5
-1
main.go
···
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log.Fatal(err)
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}
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game := game.NewGame([]string{"Player 1", "Player 2", "Player 3", "Player 4"})
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game, err := game.NewGame([]string{"Player 1", "Player 2", "Player 3", "Player 4"})
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if err != nil {
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log.Fatal(err)
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}
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if err := ebiten.RunGame(&game); err != nil {
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log.Fatal(err)