Simple ASCII/Unicode Sprite Library for Golang
A simple golang sprite library for animating ASCII and Unicode art
What is a sprite? A sprite is a two-dimensional object which you can use in videogames and animations.
Easy to use routines for creating and manipulating text sprites
Block interpolation for creating unicode "pixel" graphics
Simple ascii "fonts" for creating block based text
Event system for triggering sprite events
package main
import (
"time"
sprite "github.com/pdevine/go-asciisprite"
tm "github.com/pdevine/go-asciisprite/termbox"
)
var allSprites sprite.SpriteGroup
var Width int
var Height int
const cow_c0 = `
^__^xxxxxxxxxxxx
(oo)\_______
(__)\ )\/\
xxxx||----w |xxx
xxxx||xxxxx||xxx
`
type Cow struct {
sprite.BaseSprite
VX int
VY int
}
func NewCow() *Cow {
cow := &Cow{BaseSprite: sprite.BaseSprite{
X: 5,
Y: 5,
Visible: true},
VX: 1,
VY: 1,
}
cow.AddCostume(sprite.NewCostume(cow_c0, 'x'))
return cow
}
func (cow *Cow) Update() {
cow.X += cow.VX
cow.Y += cow.VY
if cow.X <= 0 {
cow.VX = 1
} else if cow.X >= (Width-cow.Width) {
cow.VX = -1
}
if cow.Y <= 0 {
cow.VY = 1
} else if cow.Y >= (Height-cow.Height) {
cow.VY = -1
}
}
func main() {
err := tm.Init()
if err != nil {
panic(err)
}
defer tm.Close()
Width, Height = tm.Size()
event_queue := make(chan tm.Event)
go func() {
for {
event_queue <- tm.PollEvent()
}
}()
cow := NewCow()
c := sprite.NewCostume("Press 'ESC' to quit", '~')
text := sprite.NewBaseSprite(Width/2-c.Width/2, Height-2, c)
allSprites.Sprites = append(allSprites.Sprites, cow)
allSprites.Sprites = append(allSprites.Sprites, text)
mainloop:
for {
tm.Clear(tm.ColorDefault, tm.ColorDefault)
select {
case ev := <-event_queue:
if ev.Type == tm.EventKey {
if ev.Key == tm.KeyEsc {
break mainloop
}
} else if ev.Type == tm.EventResize {
Width = ev.Width
Height = ev.Height
}
default:
allSprites.Update()
allSprites.Render()
time.Sleep(60 * time.Millisecond)
}
}
}
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