83 lines
2.7 KiB
Python
83 lines
2.7 KiB
Python
from pandac.PandaModules import *
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from MarginCell import MarginCell
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import random
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class MarginManager(PandaNode):
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def __init__(self):
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PandaNode.__init__(self, 'margins')
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self.cells = set()
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self.visiblePopups = set()
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def addGridCell(self, x, y, a2d):
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# Yucky!
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nodePath = NodePath.anyPath(self)
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a2d.reparentTo(nodePath)
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cell = MarginCell(self)
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cell.reparentTo(a2d)
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cell.setScale(0.2)
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cell.setPos(x, 0, y + 0.025)
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cell.setAvailable(True)
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cell.setPythonTag('MarginCell', cell)
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self.cells.add(cell)
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self.reorganize()
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return cell
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def setCellAvailable(self, cell, available):
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cell = cell.getPythonTag('MarginCell')
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cell.setAvailable(available)
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self.reorganize()
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def addVisiblePopup(self, popup):
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self.visiblePopups.add(popup)
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self.reorganize()
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def removeVisiblePopup(self, popup):
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if popup not in self.visiblePopups: return
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self.visiblePopups.remove(popup)
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self.reorganize()
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def reorganize(self):
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# First, get all active cells:
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activeCells = [cell for cell in self.cells if cell.isAvailable()]
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# Next, get all visible popups, sorted by priority:
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popups = list(self.visiblePopups)
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popups.sort(key=lambda x: -x.getPriority())
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# We can only display so many popups, so truncate to the number of active
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# margin cells:
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popups = popups[:len(activeCells)]
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# Now, we need to build up a list of free cells:
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freeCells = []
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for cell in activeCells:
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if not cell.hasContent():
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freeCells.append(cell)
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elif cell.getContent() in popups:
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# It's already displaying something we want to show, so we can
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# safely ignore this cell/popup pair:
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popups.remove(cell.getContent())
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else:
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# It's not displaying something we want to see, evict the old
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# popup:
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cell.setContent(None)
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freeCells.append(cell)
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# At this point, there should be enough cells to show the popups:
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assert len(freeCells) >= len(popups)
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# Now we assign the popups:
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for popup in popups:
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if popup._lastCell in freeCells and popup._lastCell.isFree():
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# The last cell it had assigned is available, so let's assign it
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# again:
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popup._lastCell.setContent(popup)
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freeCells.remove(popup._lastCell)
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else:
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# We assign a cell at random.
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cell = random.choice(freeCells)
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cell.setContent(popup)
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freeCells.remove(cell)
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