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event.go
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event.go
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/*
* Copyright (c) 2021 The GoPlus Authors (goplus.org). All rights reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package spx
import (
"log"
"sync"
"github.com/goplus/spx/internal/coroutine"
)
// -------------------------------------------------------------------------------------
type eventSink struct {
prev *eventSink
pthis threadObj
cond func(interface{}) bool
sink interface{}
}
func (p *eventSink) doDeleteClone(this interface{}) (ret *eventSink) {
ret = p
pp := &ret
for {
p := *pp
if p == nil {
return
}
if p.pthis == this {
*pp = p.prev
} else {
pp = &p.prev
}
}
}
func (p *eventSink) asyncCall(start bool, data interface{}, doSth func(*eventSink)) {
for p != nil {
if p.cond == nil || p.cond(data) {
copy := p
gco.CreateAndStart(start, p.pthis, func(coroutine.Thread) int {
doSth(copy)
return 0
})
}
p = p.prev
}
}
func (p *eventSink) syncCall(data interface{}, doSth func(*eventSink)) {
var wg sync.WaitGroup
for p != nil {
if p.cond == nil || p.cond(data) {
wg.Add(1)
copy := p
gco.CreateAndStart(false, p.pthis, func(coroutine.Thread) int {
defer wg.Done()
doSth(copy)
return 0
})
}
p = p.prev
}
waitToDo(wg.Wait)
}
func (p *eventSink) call(wait bool, data interface{}, doSth func(*eventSink)) {
if wait {
p.syncCall(data, doSth)
} else {
p.asyncCall(false, data, doSth)
}
}
// -------------------------------------------------------------------------------------
type eventSinkMgr struct {
allWhenStart *eventSink
allWhenKeyPressed *eventSink
allWhenIReceive *eventSink
allWhenBackdropChanged *eventSink
allWhenCloned *eventSink
allWhenTouchStart *eventSink
allWhenTouching *eventSink
allWhenTouchEnd *eventSink
allWhenClick *eventSink
allWhenMoving *eventSink
allWhenTurning *eventSink
calledStart bool
}
func (p *eventSinkMgr) reset() {
p.allWhenStart = nil
p.allWhenKeyPressed = nil
p.allWhenIReceive = nil
p.allWhenBackdropChanged = nil
p.allWhenCloned = nil
p.allWhenTouchStart = nil
p.allWhenTouching = nil
p.allWhenTouchEnd = nil
p.allWhenClick = nil
p.allWhenMoving = nil
p.allWhenTurning = nil
p.calledStart = false
}
func (p *eventSinkMgr) doDeleteClone(this interface{}) {
p.allWhenStart = p.allWhenStart.doDeleteClone(this)
p.allWhenKeyPressed = p.allWhenKeyPressed.doDeleteClone(this)
p.allWhenIReceive = p.allWhenIReceive.doDeleteClone(this)
p.allWhenBackdropChanged = p.allWhenBackdropChanged.doDeleteClone(this)
p.allWhenCloned = p.allWhenCloned.doDeleteClone(this)
p.allWhenTouchStart = p.allWhenTouchStart.doDeleteClone(this)
p.allWhenTouching = p.allWhenTouching.doDeleteClone(this)
p.allWhenTouchEnd = p.allWhenTouchEnd.doDeleteClone(this)
p.allWhenClick = p.allWhenClick.doDeleteClone(this)
p.allWhenMoving = p.allWhenMoving.doDeleteClone(this)
p.allWhenTurning = p.allWhenTurning.doDeleteClone(this)
}
func (p *eventSinkMgr) doWhenStart() {
if !p.calledStart {
p.calledStart = true
p.allWhenStart.asyncCall(false, nil, func(ev *eventSink) {
if debugEvent {
log.Println("==> onStart", nameOf(ev.pthis))
}
ev.sink.(func())()
})
}
}
func (p *eventSinkMgr) doWhenKeyPressed(key Key) {
p.allWhenKeyPressed.asyncCall(false, key, func(ev *eventSink) {
ev.sink.(func(Key))(key)
})
}
func (p *eventSinkMgr) doWhenClick(this threadObj) {
p.allWhenClick.asyncCall(false, this, func(ev *eventSink) {
if debugEvent {
log.Println("==> onClick", nameOf(this))
}
ev.sink.(func())()
})
}
func (p *eventSinkMgr) doWhenTouchStart(this threadObj, obj *SpriteImpl) {
p.allWhenTouchStart.asyncCall(false, this, func(ev *eventSink) {
if debugEvent {
log.Println("===> onTouchStart", nameOf(this), obj.name)
}
ev.sink.(func(Sprite))(obj.sprite)
})
}
func (p *eventSinkMgr) doWhenTouching(this threadObj, obj *SpriteImpl) {
p.allWhenTouching.asyncCall(false, this, func(ev *eventSink) {
if debugEvent {
log.Println("==> onTouching", nameOf(this), obj.name)
}
ev.sink.(func(Sprite))(obj.sprite)
})
}
func (p *eventSinkMgr) doWhenTouchEnd(this threadObj, obj *SpriteImpl) {
p.allWhenTouchEnd.asyncCall(false, this, func(ev *eventSink) {
if debugEvent {
log.Println("===> onTouchEnd", nameOf(this), obj.name)
}
ev.sink.(func(Sprite))(obj.sprite)
})
}
func (p *eventSinkMgr) doWhenCloned(this threadObj, data interface{}) {
p.allWhenCloned.asyncCall(true, this, func(ev *eventSink) {
if debugEvent {
log.Println("==> onCloned", nameOf(this))
}
ev.sink.(func(interface{}))(data)
})
}
func (p *eventSinkMgr) doWhenMoving(this threadObj, mi *MovingInfo) {
p.allWhenMoving.asyncCall(true, this, func(ev *eventSink) {
ev.sink.(func(*MovingInfo))(mi)
})
}
func (p *eventSinkMgr) doWhenTurning(this threadObj, mi *TurningInfo) {
p.allWhenTurning.asyncCall(true, this, func(ev *eventSink) {
ev.sink.(func(*TurningInfo))(mi)
})
}
func (p *eventSinkMgr) doWhenIReceive(msg string, data interface{}, wait bool) {
p.allWhenIReceive.call(wait, msg, func(ev *eventSink) {
ev.sink.(func(string, interface{}))(msg, data)
})
}
func (p *eventSinkMgr) doWhenBackdropChanged(name string, wait bool) {
p.allWhenBackdropChanged.call(wait, name, func(ev *eventSink) {
ev.sink.(func(string))(name)
})
}
// -------------------------------------------------------------------------------------
type IEventSinks interface {
OnAnyKey(onKey func(key Key))
OnBackdrop__0(onBackdrop func(name string))
OnBackdrop__1(name string, onBackdrop func())
OnClick(onClick func())
OnKey__0(key Key, onKey func())
OnKey__1(keys []Key, onKey func(Key))
OnKey__2(keys []Key, onKey func())
OnMsg__0(onMsg func(msg string, data interface{}))
OnMsg__1(msg string, onMsg func())
OnStart(onStart func())
Stop(kind StopKind)
}
type eventSinks struct {
*eventSinkMgr
pthis threadObj
}
func nameOf(this interface{}) string {
if spr, ok := this.(*SpriteImpl); ok {
return spr.name
}
if _, ok := this.(*Game); ok {
return "Game"
}
panic("eventSinks: unexpected this object")
}
func (p *eventSinks) init(mgr *eventSinkMgr, this threadObj) {
p.eventSinkMgr = mgr
p.pthis = this
}
func (p *eventSinks) initFrom(src *eventSinks, this threadObj) {
p.eventSinkMgr = src.eventSinkMgr
p.pthis = this
}
func (p *eventSinks) doDeleteClone() {
p.eventSinkMgr.doDeleteClone(p.pthis)
}
// -------------------------------------------------------------------------------------
func (p *eventSinks) OnStart(onStart func()) {
p.allWhenStart = &eventSink{
prev: p.allWhenStart,
pthis: p.pthis,
sink: onStart,
}
}
func (p *eventSinks) OnClick(onClick func()) {
pthis := p.pthis
p.allWhenClick = &eventSink{
prev: p.allWhenClick,
pthis: pthis,
sink: onClick,
cond: func(data interface{}) bool {
return data == pthis
},
}
}
func (p *eventSinks) OnAnyKey(onKey func(key Key)) {
p.allWhenKeyPressed = &eventSink{
prev: p.allWhenKeyPressed,
pthis: p.pthis,
sink: onKey,
}
}
func (p *eventSinks) OnKey__0(key Key, onKey func()) {
p.allWhenKeyPressed = &eventSink{
prev: p.allWhenKeyPressed,
pthis: p.pthis,
sink: func(Key) {
if debugEvent {
log.Println("==> onKey", key, nameOf(p.pthis))
}
onKey()
},
cond: func(data interface{}) bool {
return data.(Key) == key
},
}
}
func (p *eventSinks) OnKey__1(keys []Key, onKey func(Key)) {
p.allWhenKeyPressed = &eventSink{
prev: p.allWhenKeyPressed,
pthis: p.pthis,
sink: func(key Key) {
if debugEvent {
log.Println("==> onKey", keys, nameOf(p.pthis))
}
onKey(key)
},
cond: func(data interface{}) bool {
keyIn := data.(Key)
for _, key := range keys {
if key == keyIn {
return true
}
}
return false
},
}
}
func (p *eventSinks) OnKey__2(keys []Key, onKey func()) {
p.OnKey__1(keys, func(Key) {
onKey()
})
}
func (p *eventSinks) OnMsg__0(onMsg func(msg string, data interface{})) {
p.allWhenIReceive = &eventSink{
prev: p.allWhenIReceive,
pthis: p.pthis,
sink: onMsg,
}
}
func (p *eventSinks) OnMsg__1(msg string, onMsg func()) {
p.allWhenIReceive = &eventSink{
prev: p.allWhenIReceive,
pthis: p.pthis,
sink: func(msg string, data interface{}) {
if debugEvent {
log.Println("==> onMsg", msg, nameOf(p.pthis))
}
onMsg()
},
cond: func(data interface{}) bool {
return data.(string) == msg
},
}
}
func (p *eventSinks) OnBackdrop__0(onBackdrop func(name string)) {
p.allWhenBackdropChanged = &eventSink{
prev: p.allWhenBackdropChanged,
pthis: p.pthis,
sink: onBackdrop,
}
}
func (p *eventSinks) OnBackdrop__1(name string, onBackdrop func()) {
p.allWhenBackdropChanged = &eventSink{
prev: p.allWhenBackdropChanged,
pthis: p.pthis,
sink: func(name string) {
if debugEvent {
log.Println("==> onBackdrop", name, nameOf(p.pthis))
}
onBackdrop()
},
cond: func(data interface{}) bool {
return data.(string) == name
},
}
}
// -------------------------------------------------------------------------------------
type StopKind int
const (
_All StopKind = All // stop all scripts of stage/sprites and abort this script
AllOtherScripts StopKind = -100 // stop all other scripts
AllSprites StopKind = -101 // stop all scripts of sprites
ThisSprite StopKind = -102 // stop all scripts of this sprite
ThisScript StopKind = -103 // abort this script
OtherScriptsInSprite StopKind = -104 // stop other scripts of this sprite
)
func (p *eventSinks) Stop(kind StopKind) {
var filter func(th coroutine.Thread) bool
switch kind {
case AllSprites:
filter = func(th coroutine.Thread) bool {
return isSprite(th.Obj)
}
case ThisSprite:
this := p.pthis
filter = func(th coroutine.Thread) bool {
return th.Obj == this
}
case OtherScriptsInSprite:
this := p.pthis
filter = func(th coroutine.Thread) bool {
return th.Obj == this && th != gco.Current()
}
case AllOtherScripts:
filter = func(th coroutine.Thread) bool {
return (isSprite(th.Obj) || isGame(th.Obj)) && th != gco.Current()
}
case All:
gco.StopIf(func(th coroutine.Thread) bool {
return isSprite(th.Obj) || isGame(th.Obj)
})
fallthrough
case ThisScript:
gco.Abort()
}
gco.StopIf(filter)
}
func isGame(obj threadObj) bool {
_, ok := obj.(*Game)
return ok
}
func isSprite(obj threadObj) bool {
_, ok := obj.(*SpriteImpl)
return ok
}
// -------------------------------------------------------------------------------------