65 lines
2 KiB
Python
65 lines
2 KiB
Python
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"""McRogueFace - Path Animation (Multi-Step Movement) (effects_path_animation)
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Documentation: https://mcrogueface.github.io/cookbook/effects_path_animation
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Repository: https://github.com/jmccardle/McRogueFace/blob/master/docs/cookbook/effects/effects_path_animation.py
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This code is extracted from the McRogueFace documentation and can be
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run directly with: ./mcrogueface path/to/this/file.py
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"""
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import mcrfpy
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class CameraFollowingPath:
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"""Path animator that also moves the camera."""
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def __init__(self, entity, grid, path, step_duration=0.2):
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self.entity = entity
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self.grid = grid
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self.path = path
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self.step_duration = step_duration
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self.index = 0
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self.on_complete = None
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def start(self):
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self.index = 0
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self._next()
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def _next(self):
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if self.index >= len(self.path):
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if self.on_complete:
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self.on_complete(self)
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return
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x, y = self.path[self.index]
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def done(anim, target):
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self.index += 1
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self._next()
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# Animate entity
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if self.entity.x != x:
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anim = mcrfpy.Animation("x", float(x), self.step_duration,
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"easeInOut", callback=done)
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anim.start(self.entity)
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elif self.entity.y != y:
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anim = mcrfpy.Animation("y", float(y), self.step_duration,
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"easeInOut", callback=done)
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anim.start(self.entity)
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else:
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done(None, None)
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return
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# Animate camera to follow
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cam_x = mcrfpy.Animation("center_x", (x + 0.5) * 16,
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self.step_duration, "easeInOut")
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cam_y = mcrfpy.Animation("center_y", (y + 0.5) * 16,
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self.step_duration, "easeInOut")
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cam_x.start(self.grid)
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cam_y.start(self.grid)
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# Usage
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path = [(5, 5), (5, 10), (10, 10)]
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mover = CameraFollowingPath(player, grid, path)
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mover.on_complete = lambda m: print("Journey complete!")
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mover.start()
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