mirror of
https://github.com/Sneed-Group/Poodletooth-iLand
synced 2024-12-29 06:32:40 -06:00
102 lines
4 KiB
Python
102 lines
4 KiB
Python
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from pandac.PandaModules import *
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#
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# GridParent.py
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# Any object that can be parented to the ocean grid
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# (or any grid whose size is too large to represent in 16 bits),
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# should derive from GridParent. Can be used on client and AI code.
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# GridParent will put a node inbetween the object and the grid so
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# that the object is broadcasting its position relative to the gridCell
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# it lies in.
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class GridParent:
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# this lets GridParents share CellOrigins
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GridZone2CellOrigin = {}
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GridZone2count = {}
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@staticmethod
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def getCellOrigin(grid, zoneId):
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tup = (grid, zoneId)
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if tup not in GridParent.GridZone2count:
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GridParent.GridZone2count[tup] = 0
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# For readability when debugging, append the zone to the name
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GridParent.GridZone2CellOrigin[tup] = grid.attachNewNode("cellOrigin-%s" % zoneId)
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# Get grid cell origin
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cellPos = grid.getZoneCellOrigin(zoneId)
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# Set the gridNode's position
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GridParent.GridZone2CellOrigin[tup].setPos(*cellPos)
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GridParent.GridZone2count[tup] += 1
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return GridParent.GridZone2CellOrigin[tup]
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@staticmethod
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def releaseCellOrigin(grid, zoneId):
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tup = (grid, zoneId)
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GridParent.GridZone2count[tup] -= 1
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if GridParent.GridZone2count[tup] == 0:
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del GridParent.GridZone2count[tup]
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GridParent.GridZone2CellOrigin[tup].removeNode()
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del GridParent.GridZone2CellOrigin[tup]
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def __init__(self, av):
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# The object on the grid will need to broadcast his position relative to
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# his current grid cell in order to use 16 bit
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# telemetry. To do this, we will have a node attached to the
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# grid cell origin, and the object will wrtReparent himself to it when
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# crossing into that grid cell. We don't need to create a node for each
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# cell origin. We just need two nodes: one that we are currently parented
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# to, and the other that we will wrtReparentTo. Just before wrtReparenting
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# to the new node, set it's position to the new grid cell origin.
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self.av = av
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self.grid = None
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# NOTE: this node gets renamed when it is put on a zone, so if you
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# are looking for it by name, try cellOrigin*.
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self.ownCellOrigin = NodePath("cellOrigin")
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self.cellOrigin = self.ownCellOrigin
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def delete(self):
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if self.av:
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if self.av.getParent() == self.cellOrigin:
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self.av.detachNode()
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del self.av
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self.av = None
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# Remove the gridNodes
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if self.ownCellOrigin is not None:
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self.ownCellOrigin.removeNode()
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self.ownCellOrigin = None
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if self.grid is not None:
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self.releaseCellOrigin(self.grid, self.zoneId)
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self.grid = None
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self.zoneId = None
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def setGridParent(self, grid, zoneId, teleport=0):
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# If teleport=0, preserve the avatar's absolute position. If teleport=1
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# the avatars previous world position is invalid, so don't wrtReparent,
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# just do a regular reparent, and let the cellOrigin give us our new position
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# Also, if the avatar has no parent, then force teleport=1
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if self.av.getParent().isEmpty():
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teleport = 1
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if not teleport:
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# Stick the avatar under hidden while we move the cellOrigin into
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# position so we do not lose the avatars absolute position.
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self.av.wrtReparentTo(hidden)
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if self.grid is not None:
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self.releaseCellOrigin(self.grid, self.zoneId)
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self.grid = grid
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self.zoneId = zoneId
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self.cellOrigin = self.getCellOrigin(self.grid, self.zoneId)
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# Reparent our avatar to this node
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if not teleport:
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self.av.wrtReparentTo(self.cellOrigin)
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else:
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self.av.reparentTo(self.cellOrigin)
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#print "gridParent: reparent to %s" % self.av
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#print "gridParent: pos = %s, %s" % (self.av.getPos(), self.av.getParent().getPos())
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