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blocks: Adjust flushing colors

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This commit is contained in:
Hajime Hoshi 2016-02-16 04:31:20 +09:00
parent 5fcf20678a
commit 9660efc5bd
1 changed files with 15 additions and 5 deletions
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20
examples/blocks/blocks/field.go
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@ -163,14 +163,24 @@ func (f *Field) Update() error {
return nil
}
func min(a, b float64) float64 {
if a > b {
return b
}
return a
}
func (f *Field) flushingColor() ebiten.ColorM {
c := f.flushCount
if c < 0 {
c = 0
}
rate := float64(c) / maxFlushCount
clr := ebiten.ColorM{}
alpha := (float64(f.flushCount) / maxFlushCount) / 2
alpha := min(1, rate*2)
clr.Scale(1, 1, 1, alpha)
r := (1 - float64(f.flushCount)/maxFlushCount) * 2
g := (1 - float64(f.flushCount)/maxFlushCount) / 2
b := (1 - float64(f.flushCount)/maxFlushCount) / 2
clr.Translate(r, g, b, 0)
r := min(1, (1-rate)*2)
clr.Translate(r, 0, 0, 0)
return clr
}