mirror of
https://github.com/maaslalani/confetty.git
synced 2024-11-22 07:36:40 +00:00
111 lines
2.4 KiB
Go
111 lines
2.4 KiB
Go
package fireworks
|
|
|
|
import (
|
|
"math"
|
|
"math/rand"
|
|
"time"
|
|
|
|
"github.com/charmbracelet/harmonica"
|
|
"github.com/maaslalani/confetty/array"
|
|
"github.com/maaslalani/confetty/simulation"
|
|
|
|
tea "github.com/charmbracelet/bubbletea"
|
|
"github.com/charmbracelet/lipgloss"
|
|
"golang.org/x/term"
|
|
)
|
|
|
|
const (
|
|
framesPerSecond = 60.0
|
|
numParticles = 50
|
|
)
|
|
|
|
var (
|
|
colors = []string{"#fdff6a", "#ff718d"}
|
|
characters = []string{"+", "*", "•"}
|
|
)
|
|
|
|
type frameMsg time.Time
|
|
type fireworkMsg time.Time
|
|
|
|
func animate() tea.Cmd {
|
|
return tea.Tick(time.Second/framesPerSecond, func(t time.Time) tea.Msg {
|
|
return frameMsg(t)
|
|
})
|
|
}
|
|
|
|
type model struct {
|
|
system *simulation.System
|
|
}
|
|
|
|
func Spawn(width, height int) []simulation.Particle {
|
|
color := lipgloss.Color(array.Sample(colors))
|
|
v := float64(rand.Intn(10) + 20.0)
|
|
|
|
particles := []simulation.Particle{}
|
|
|
|
x := rand.Float64() * float64(width)
|
|
y := rand.Float64() * float64(height)
|
|
|
|
for i := 0; i < numParticles; i++ {
|
|
p := simulation.Particle{
|
|
Physics: harmonica.NewProjectile(
|
|
harmonica.FPS(framesPerSecond),
|
|
harmonica.Point{X: x, Y: y},
|
|
harmonica.Vector{X: math.Cos(float64(i)) * v, Y: math.Sin(float64(i)) * v / 2},
|
|
harmonica.Vector(harmonica.TerminalGravity),
|
|
),
|
|
Char: lipgloss.NewStyle().Foreground(color).Render(array.Sample(characters)),
|
|
}
|
|
particles = append(particles, p)
|
|
}
|
|
return particles
|
|
}
|
|
|
|
func InitialModel() model {
|
|
width, height, err := term.GetSize(0)
|
|
if err != nil {
|
|
panic(err)
|
|
}
|
|
|
|
return model{system: &simulation.System{
|
|
Particles: Spawn(width, height),
|
|
Frame: simulation.Frame{
|
|
Width: width,
|
|
Height: height,
|
|
},
|
|
}}
|
|
}
|
|
|
|
// Init initializes the confetti after a small delay
|
|
func (m model) Init() tea.Cmd {
|
|
return animate()
|
|
}
|
|
|
|
// Update updates the model every frame, it handles the animation loop and
|
|
// updates the particle physics every frame
|
|
func (m model) Update(msg tea.Msg) (tea.Model, tea.Cmd) {
|
|
switch msg := msg.(type) {
|
|
case tea.KeyMsg:
|
|
switch msg.String() {
|
|
case "ctrl+c", "q":
|
|
return m, tea.Quit
|
|
}
|
|
m.system.Particles = Spawn(m.system.Frame.Width, m.system.Frame.Height)
|
|
return m, nil
|
|
case frameMsg:
|
|
m.system.Update()
|
|
return m, animate()
|
|
case tea.WindowSizeMsg:
|
|
m.system.Frame.Width = msg.Width
|
|
m.system.Frame.Height = msg.Height
|
|
return m, nil
|
|
default:
|
|
return m, nil
|
|
}
|
|
}
|
|
|
|
// View displays all the particles on the screen
|
|
func (m model) View() string {
|
|
return m.system.Render()
|
|
}
|