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internal/uidriver/js: Optimization: Avoid creating new maps for initialization

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This commit is contained in:
Hajime Hoshi 2021-01-26 00:12:12 +09:00
parent e844c257f7
commit f1848a6d46
1 changed files with 11 additions and 6 deletions
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17
internal/uidriver/js/input_js.go
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@ -397,18 +397,19 @@ func (i *Input) setMouseCursorFromEvent(e js.Value) {
i.setMouseCursor(x, y)
}
func (i *Input) updateTouchesFromEvent(e js.Value) {
func (in *Input) updateTouchesFromEvent(e js.Value) {
j := e.Get("targetTouches")
ts := map[driver.TouchID]pos{}
for k := range in.touches {
delete(in.touches, k)
}
for i := 0; i < j.Length(); i++ {
jj := j.Call("item", i)
id := driver.TouchID(jj.Get("identifier").Int())
ts[id] = pos{
in.touches[id] = pos{
X: jj.Get("clientX").Int(),
Y: jj.Get("clientY").Int(),
}
}
i.touches = ts
}
func (i *Input) updateForGo2Cpp() {
@ -416,7 +417,9 @@ func (i *Input) updateForGo2Cpp() {
return
}
i.touches = map[driver.TouchID]pos{}
for k := range i.touches {
delete(i.touches, k)
}
touchCount := go2cpp.Get("touchCount").Int()
for idx := 0; idx < touchCount; idx++ {
id := go2cpp.Call("getTouchId", idx)
@ -428,7 +431,9 @@ func (i *Input) updateForGo2Cpp() {
}
}
i.gamepads = map[driver.GamepadID]gamepad{}
for k := range i.gamepads {
delete(i.gamepads, k)
}
gamepadCount := go2cpp.Get("gamepadCount").Int()
for idx := 0; idx < gamepadCount; idx++ {
g := gamepad{}