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Add CurrentFPS

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This commit is contained in:
Hajime Hoshi 2015-01-11 16:01:56 +09:00
parent 0332b8d5ed
commit 9d5ab644a4
1 changed files with 7 additions and 3 deletions
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10
run.go
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@ -20,7 +20,12 @@ import (
"time" "time"
) )
var fps = 0 var fps = 0.0
// CurrentFPS returns the current number of frames per second.
func CurrentFPS() float64 {
return fps
}
// Run runs the game. // Run runs the game.
// f is a function which is called at every frame. // f is a function which is called at every frame.
@ -77,8 +82,7 @@ func Run(f func(*Image) error, width, height, scale int, title string) error {
now := time.Now().UnixNano() now := time.Now().UnixNano()
frames++ frames++
if time.Second <= time.Duration(now-t) { if time.Second <= time.Duration(now-t) {
fps = int(int64(frames) * int64(time.Second) / (now - t)) fps = float64(frames) * float64(time.Second) / float64(now-t)
// TODO: How to show the current FPS?
t = now t = now
frames = 0 frames = 0
} }