go-opengl-pixel/render.go

58 lines
1.1 KiB
Go

package main
import (
"image/color"
"time"
"github.com/faiface/pixel"
"github.com/faiface/pixel/imdraw"
"github.com/faiface/pixel/pixelgl"
"golang.org/x/image/colornames"
)
func render(s state, w *pixelgl.Window, d time.Duration, colors map[*team]pixel.RGBA) {
b := w.Bounds()
im := imdraw.New(nil)
hOffset := b.Size().X / steps
vOffset := b.Size().Y / (numTeams + 1)
width := 20
for i, t := range s.teams {
for j, bot := range t.bots {
if &t.bots[j] == t.baton.holder {
im.Color = pixel.RGB(0, 1, 0)
} else {
im.Color = colors[&s.teams[i]]
}
from := pixel.V(b.Min.X+float64(width)/2, b.Min.Y+float64(i+1)*vOffset)
pos := from.Add(pixel.V(float64(bot.pos)*hOffset, 0))
im.Push(pos)
im.Clear()
im.Circle(float64(width), 0)
im.Draw(w)
}
}
}
func teamColors(ts []team) map[*team]pixel.RGBA {
m := make(map[*team]pixel.RGBA)
for i := range ts {
var c color.RGBA
switch i {
case 0:
c = colornames.Cyan
case 1:
c = colornames.Gold
case 2:
c = colornames.Lavender
case 3:
c = colornames.Indigo
}
m[&ts[i]] = pixel.ToRGBA(c)
}
return m
}