Mercurial > nagslang
view nagslang/protagonist.py @ 81:a1b4d09e6f23
Floor switch with horrible hackery.
author | davidsharpe@lantea.local |
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date | Sun, 01 Sep 2013 22:53:37 +0200 |
parents | 29ace74cc9de |
children | d6a49f0c1e6e |
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import pymunk import pymunk.pygame_util from nagslang.constants import COLLISION_TYPE_PLAYER from nagslang.game_object import ( GameObject, SingleShapePhysicser, FacingImageRenderer) from nagslang.mutators import FLIP_H from nagslang.resources import resources class Protagonist(GameObject): """Representation of our fearless protagonist. TODO: Factor out a bunch of this stuff when we need it for other objects. """ HUMAN_FORM = 'human' WOLF_FORM = 'wolf' def __init__(self, position): self._setup_physics(position) self._setup_renderers() self.inventory = {} self.form = self.HUMAN_FORM super(Protagonist, self).__init__( self._renderers[self.form], SingleShapePhysicser(self.shape)) self.go_human() def _setup_physics(self, position): self._body = pymunk.Body(10, 10000) self._body.position = position self._body.velocity_func = self.velocity_func self.shape = pymunk.Circle(self._body, 30) self.shape.elasticity = 1.0 self.shape.friction = 10.0 self.shape.collision_type = COLLISION_TYPE_PLAYER def _get_image(self, name, *transforms): return resources.get_image('creatures', name, transforms=transforms) def _setup_renderers(self): self._renderers = { self.HUMAN_FORM: FacingImageRenderer( self._get_image('human_1.png'), self._get_image('human_1.png', FLIP_H)), self.WOLF_FORM: FacingImageRenderer( self._get_image('werewolf_1.png'), self._get_image('werewolf_1.png', FLIP_H)), } @classmethod def from_saved_state(cls, saved_state): """Create an instance from the provided serialised state. """ obj = cls() # TODO: Update from saved state. return obj def velocity_func(self, body, gravity, damping, dt): return pymunk.Body.update_velocity(body, gravity, self.damping, dt) def go_werewolf(self): self.form = self.WOLF_FORM self._body.mass = 100 self._body.moment = 10000 self._body.velocity_limit = 1000 self.impulse_factor = 4000 self.damping = 0.9 self.renderer = self._renderers[self.form] def go_human(self): self.form = self.HUMAN_FORM self._body.mass = 10 self._body.moment = 1000 self._body.velocity_limit = 1000 self.impulse_factor = 500 self.damping = 0.8 self.renderer = self._renderers[self.form] def set_direction(self, dx, dy): if (dx, dy) == (0, 0): return vec = pymunk.Vec2d((dx, dy)) self._body.angle = vec.angle self._body.apply_impulse( (dx * self.impulse_factor, dy * self.impulse_factor)) def toggle_form(self): if self.form == self.WOLF_FORM: self.go_human() else: self.go_werewolf() def act_on(self, target): """Perform an action on the target. """ # TODO: Decide how best to do this. pass def attack(self): """Attempt to hurt something. """ pass def in_wolf_form(self): return self.form == self.WOLF_FORM def in_human_form(self): return self.form == self.HUMAN_FORM def has_item(self, item): return item in self.inventory def environmental_movement(self, dx, dy): if (dx, dy) == (0, 0): return self._body.apply_impulse((dx, dy))