TheCloud/panda3d
1
0
Fork 0
mirror of https://github.com/panda3d/panda3d.git synced 2025-09-30 08:44:19 -04:00
Code Issues Packages Projects Releases Wiki Activity

showbase: make iris/fade/letterbox transitions awaitable

Browse Source 
This allows using a coroutine to build up a more complex sequence including transitions (eg. scripted cutscene), as well as provide a standard way to register callbacks upon completion of the transition.
This commit is contained in:
rdb 2018-05-05 23:05:50 +02:00
parent cf58de4d04
commit 71eee6df3f
1 changed files with 57 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

58
direct/src/showbase/Transitions.py
View File

@ -23,7 +23,9 @@ class Transitions:
scale=3.0,
pos=Vec3(0, 0, 0)):
self.transitionIval = None
self.__transitionFuture = None
self.letterboxIval = None
self.__letterboxFuture = None
self.iris = None
self.fade = None
self.letterbox = None
@ -151,11 +153,17 @@ class Transitions:
self.noTransitions()
self.loadFade()
self.fade.detachNode()
fut = AsyncFuture()
fut.setResult(None)
return fut
else:
# Create a sequence that lerps the color out, then
# parents the fade to hidden
self.transitionIval = self.getFadeInIval(t, finishIval)
self.transitionIval.append(Func(self.__finishTransition))
self.__transitionFuture = AsyncFuture()
self.transitionIval.start()
return self.__transitionFuture
def fadeOut(self, t=0.5, finishIval=None):
"""
@ -181,8 +189,16 @@ class Transitions:
else:
# Create a sequence that lerps the color out, then
# parents the fade to hidden
self.transitionIval = self.getFadeOutIval(t,finishIval)
self.transitionIval = self.getFadeOutIval(t, finishIval)
self.transitionIval.append(Func(self.__finishTransition))
self.__transitionFuture = AsyncFuture()
self.transitionIval.start()
return self.__transitionFuture
# Immediately done, so return a dummy future.
fut = AsyncFuture()
fut.setResult(None)
return fut
def fadeOutActive(self):
return self.fade and self.fade.getColor()[3] > 0
@ -226,6 +242,9 @@ class Transitions:
if self.transitionIval:
self.transitionIval.pause()
self.transitionIval = None
if self.__transitionFuture:
self.__transitionFuture.cancel()
self.__transitionFuture = None
if self.fade:
# Make sure to reset the color, since fadeOutActive() is looking at it
self.fade.setColor(self.alphaOff)
@ -256,6 +275,9 @@ class Transitions:
self.loadIris()
if (t == 0):
self.iris.detachNode()
fut = AsyncFuture()
fut.setResult(None)
return fut
else:
self.iris.reparentTo(aspect2d, DGG.FADE_SORT_INDEX)
@ -264,11 +286,14 @@ class Transitions:
scale = scale,
startScale = 0.01),
Func(self.iris.detachNode),
Func(self.__finishTransition),
name = self.irisTaskName,
)
self.__transitionFuture = AsyncFuture()
if finishIval:
self.transitionIval.append(finishIval)
self.transitionIval.start()
return self.__transitionFuture
def irisOut(self, t=0.5, finishIval=None):
"""
@ -284,6 +309,9 @@ class Transitions:
if (t == 0):
self.iris.detachNode()
self.fadeOut(0)
fut = AsyncFuture()
fut.setResult(None)
return fut
else:
self.iris.reparentTo(aspect2d, DGG.FADE_SORT_INDEX)
@ -294,11 +322,14 @@ class Transitions:
Func(self.iris.detachNode),
# Use the fade to cover up the hole that the iris would leave
Func(self.fadeOut, 0),
Func(self.__finishTransition),
name = self.irisTaskName,
)
self.__transitionFuture = AsyncFuture()
if finishIval:
self.transitionIval.append(finishIval)
self.transitionIval.start()
return self.__transitionFuture
def noIris(self):
"""
@ -322,6 +353,11 @@ class Transitions:
# Letterbox is not really a transition, it is a screen overlay
# self.noLetterbox()
def __finishTransition(self):
if self.__transitionFuture:
self.__transitionFuture.setResult(None)
self.__transitionFuture = None
##################################################
# Letterbox
##################################################
@ -394,9 +430,17 @@ class Transitions:
if self.letterboxIval:
self.letterboxIval.pause()
self.letterboxIval = None
if self.__letterboxFuture:
self.__letterboxFuture.cancel()
self.__letterboxFuture = None
if self.letterbox:
self.letterbox.stash()
def __finishLetterbox(self):
if self.__letterboxFuture:
self.__letterboxFuture.setResult(None)
self.__letterboxFuture = None
def letterboxOn(self, t=0.25, finishIval=None):
"""
Move black bars in over t seconds.
@ -407,7 +451,11 @@ class Transitions:
if (t == 0):
self.letterboxBottom.setPos(0, 0, -1)
self.letterboxTop.setPos(0, 0, 0.8)
fut = AsyncFuture()
fut.setResult(None)
return fut
else:
self.__letterboxFuture = AsyncFuture()
self.letterboxIval = Sequence(Parallel(
LerpPosInterval(self.letterboxBottom,
t,
@ -420,11 +468,13 @@ class Transitions:
# startPos = Vec3(0, 0, 1),
),
),
Func(self.__finishLetterbox),
name = self.letterboxTaskName,
)
if finishIval:
self.letterboxIval.append(finishIval)
self.letterboxIval.start()
return self.__letterboxFuture
def letterboxOff(self, t=0.25, finishIval=None):
"""
@ -435,7 +485,11 @@ class Transitions:
self.letterbox.unstash()
if (t == 0):
self.letterbox.stash()
fut = AsyncFuture()
fut.setResult(None)
return fut
else:
self.__letterboxFuture = AsyncFuture()
self.letterboxIval = Sequence(Parallel(
LerpPosInterval(self.letterboxBottom,
t,
@ -449,9 +503,11 @@ class Transitions:
),
),
Func(self.letterbox.stash),
Func(self.__finishLetterbox),
Func(messenger.send,'letterboxOff'),
name = self.letterboxTaskName,
)
if finishIval:
self.letterboxIval.append(finishIval)
self.letterboxIval.start()
return self.__letterboxFuture