X-Git-Url: https://git.ctpug.org.za/?a=blobdiff_plain;f=tabakrolletjie%2Flights.py;h=723da6a9f427ee0304130269bc6f76716dfd8f19;hb=880b5eb95bdeb5ab303e1530b14061e6df7f6d13;hp=92b66e0a8d4b91907fdec632724e00b0ffa9fba8;hpb=17c77c62d4679e2002ec49a01e8a3bc39829451b;p=tabakrolletjie.git diff --git a/tabakrolletjie/lights.py b/tabakrolletjie/lights.py index 92b66e0..723da6a 100644 --- a/tabakrolletjie/lights.py +++ b/tabakrolletjie/lights.py @@ -1,45 +1,318 @@ """ May it be a light for you in dark places, when all other lights go out. """ +import math + import pymunk +import pymunk.pygame_util +import pygame.display +import pygame.draw +import pygame.locals as pgl +import pygame.rect +import pygame.transform + +from .constants import LIGHT_CATEGORY, FITTINGS_CATEGORY, COLOURS +from .rays import RayPolyManager +from .utils import DetailedTimer +from .loader import loader +from .transforms import ColourWedges + +LIGHT_FILTER = pymunk.ShapeFilter( + mask=pymunk.ShapeFilter.ALL_MASKS ^ ( + LIGHT_CATEGORY | FITTINGS_CATEGORY), + categories=LIGHT_CATEGORY) + +FITTINGS_FILTER = pymunk.ShapeFilter( + mask=pymunk.ShapeFilter.ALL_MASKS ^ ( + LIGHT_CATEGORY | FITTINGS_CATEGORY), + categories=FITTINGS_CATEGORY) + +# Just match lights, nothing else +LIT_BY_FILTER = pymunk.ShapeFilter(mask=LIGHT_CATEGORY) + + +class LightManager(object): + """ Manages a set of lights. """ + + def __init__(self, space, gamestate): + self._space = space + self._lights = [ + BaseLight.load(cfg) for cfg in gamestate.station["lights"]] + for light in self._lights: + light.add(self._space) + + def add_light(self, cfg): + light = BaseLight.load(cfg) + self._lights.append(light) + light.add(self._space) + + def toggle_nearest(self, *args, **kw): + light = self.nearest(*args, **kw) + if light: + light.toggle() + + def nearest(self, pos, surfpos=False, max_distance=1.0): + if surfpos: + surface = pygame.display.get_surface() + pos = pymunk.pygame_util.from_pygame(pos, surface) + point_info = self._space.point_query_nearest( + pos, max_distance, pymunk.ShapeFilter(mask=FITTINGS_CATEGORY)) + if point_info is not None: + return point_info.shape.body.light + return None + + def lit_by(self, pos, surfpos=False, max_distance=0.0): + if surfpos: + surface = pygame.display.get_surface() + pos = pymunk.pygame_util.from_pygame(pos, surface) + point_info_list = self._space.point_query( + pos, max_distance, LIT_BY_FILTER) + lights = [p.shape.body.light for p in point_info_list] + return [ + light for light in lights + if light.on and light.ray_manager.reaches(pos) + ] + + def light_query(self, shape): + """Query the lights by shape""" + old_filter = shape.filter + # We need to restrict matches to only the lights + shape.filter = LIT_BY_FILTER + shape_info_list = self._space.shape_query(shape) + shape.filter = old_filter + lights = [p.shape.body.light for p in shape_info_list] + return [ + light for light in lights + if light.on and light.ray_manager.reaches(shape.body.position) + ] + + def total_power_usage(self): + return sum(light.power_usage() for light in self._lights) + + def render_light(self, surface): + for light in self._lights: + light.render_light(surface) + + def render_fittings(self, surface): + for light in self._lights: + light.render_fitting(surface) + + def tick(self): + for light in self._lights: + light.tick() + + +def light_fitting_by_type(light_type): + """ Render a light fitting image for a light type. """ + return BaseLight.find_cls(light_type).FITTING_IMG class BaseLight(object): """ Common light functionality. """ - def __init__(self, colour, position): - self.body = pymunk.Body(0, 0, pymunk.body.Body.STATIC) - self.colour = colour - self.position = position + # defaults + RAY_MANAGER = RayPolyManager + FITTING_IMG = None + FITTING_RADIUS = 24.0 - def add_to_space(self, space): - space.remove(self.body, **self.body.shapes()) - shapes = self.determine_ray_polys(space) - space.add(self.body, **shapes) + # cached surfaces + _surface_cache = {} - def determine_ray_polys(self, space): - raise NotImplementedError( - "Lights should implement .determine_ray_polys.") + def __init__( + self, colours, position, intensity=1.0, radius_limits=None, + direction=None, spread=None): + self.colour_cycle = colours + self.colour_pos = 0 + self.colour = colours[0] + self.on = True + self.intensity = intensity + self.body = pymunk.Body(0, 0, pymunk.body.Body.STATIC) + self.body.light = self + self.ray_manager = self.RAY_MANAGER( + self.body, position, ray_filter=LIGHT_FILTER, + radius_limits=radius_limits, direction=direction, spread=spread) + self.fitting = pymunk.Circle( + self.body, self.FITTING_RADIUS, self.ray_manager.position) + self.fitting.filter = FITTINGS_FILTER + self._fitting_image = None + self._colour_mult_image = None + + @property + def position(self): + return self.ray_manager.position @classmethod def load(cls, config): kw = config.copy() light_type = kw.pop("type") + light_class = cls.find_cls(light_type) + return light_class(**kw) + + @classmethod + def find_cls(cls, light_type): [light_class] = [ c for c in cls.__subclasses__() if c.__name__.lower() == light_type] - return light_class(**kw) + return light_class + def add(self, space): + if self.body.space is not None: + space.remove(self.body, *self.body.shapes) + space.add(self.body, self.fitting) + self.ray_manager.set_space(space) + self.ray_manager.update_shapes() -class SpotLight(BaseLight): - def __init__( - self, colour="white", position=None, direction=90.0, spread=45.0): - super(SpotLight, self).__init__(colour, position) - self.direction = direction - self.spread = spread + def _cached_surface(self, name, surface): + surf = self._surface_cache.get(name) + if surf is None: + surf = self._surface_cache[name] = pygame.surface.Surface( + surface.get_size(), pgl.SWSURFACE + ).convert_alpha() + return surf + + def light_colour(self): + light_colour = COLOURS[self.colour] + intensity = int(255 * self.intensity) + return light_colour + (intensity,) + + def render_light(self, surface): + if not self.on: + return + + dt = DetailedTimer("render_light") + dt.start() + + max_radius = self.ray_manager.max_radius + min_radius = self.ray_manager.min_radius + dest_rect = self.ray_manager.pygame_rect(surface) + + white, black = (255, 255, 255, 255), (0, 0, 0, 0) + light_colour = self.light_colour() + + radius_mask = self._cached_surface('radius_mask', surface) + radius_mask.set_clip(dest_rect) + ray_mask = self._cached_surface('ray_mask', surface) + ray_mask.set_clip(dest_rect) + + ray_mask.fill(black) + for pygame_poly in self.ray_manager.pygame_polys(surface): + pygame.draw.polygon(ray_mask, white, pygame_poly, 0) + pygame.draw.polygon(ray_mask, white, pygame_poly, 1) + dt.lap("ray mask rendered") + + radius_mask.fill(black) + centre = self.ray_manager.pygame_position(surface) + pygame.draw.circle( + radius_mask, light_colour, centre, int(max_radius), 0) + pygame.draw.circle( + radius_mask, black, centre, int(min_radius), 0) + dt.lap("radius mask rendered") + + ray_mask.blit(radius_mask, dest_rect, dest_rect, pgl.BLEND_RGBA_MULT) + dt.lap("blitted radius mask to ray mask") + + surface.blit(ray_mask, dest_rect, dest_rect) + dt.lap("blitted surface") + dt.end() + + def fitting_image(self): + if self._fitting_image is None: + self._fitting_image = loader.load_image( + "48", self.FITTING_IMG, + transform=ColourWedges(colours=self.colour_cycle)) + return self._fitting_image + + def invalidate_fitting_image(self): + self._fitting_image = None + + def render_fitting(self, surface): + rx, ry = self.ray_manager.pygame_position(surface) + surface.blit(self.fitting_image(), (rx - 24, ry - 24), None, 0) + + def power_usage(self): + if not self.on: + return 0.0 + area = math.pi * (self.ray_manager.max_radius ** 2) # radius + area = area * (self.ray_manager.spread / (2 * math.pi)) # spread + return 5 * area * self.intensity / 6400 # 80x80 unit area + + def base_damage(self): + return 10 * self.intensity + + def toggle(self): + self.colour_pos += 1 + if self.colour_pos >= len(self.colour_cycle): + self.colour = self.colour_cycle[0] + self.colour_pos = -1 + self.on = False + else: + self.colour = self.colour_cycle[self.colour_pos] + self.on = True + + def tick(self): + pass class Lamp(BaseLight): - def __init__(self, colour="white", position=None, radius=100.0): - super(Lamp, self).__init__(colour, position) - self.radius = radius + + FITTING_IMG = "lamp.png" + + +class PulsatingLamp(BaseLight): + + FITTING_IMG = "lamp.png" + DEFAULT_PULSE_RANGE = (20, 100) + DEFAULT_PULSE_VELOCITY = 2 + DEFAULT_INTENSITY_RANGE = (0.0, 0.9) + DEFAULT_INTENSITY_VELOCITY = 0.1 + + def __init__(self, **kw): + self.pulse_range = kw.pop("pulse_range", self.DEFAULT_PULSE_RANGE) + self.pulse_velocity = kw.pop( + "pulse_velocity", self.DEFAULT_PULSE_VELOCITY) + self.intensity_range = kw.pop( + "intensity_range", self.DEFAULT_INTENSITY_RANGE) + self.intensity_velocity = kw.pop( + "intensity_velocity", self.DEFAULT_INTENSITY_VELOCITY) + super(PulsatingLamp, self).__init__(**kw) + + def _update_range(self, value, velocity, value_range): + value += velocity + if value < value_range[0]: + value = value_range[0] + velocity = -velocity + elif value > value_range[1]: + value = value_range[1] + velocity = -velocity + return value, velocity + + def tick(self): + self.ray_manager.max_radius, self.pulse_velocity = self._update_range( + self.ray_manager.max_radius, self.pulse_velocity, self.pulse_range) + self.intensity, self.intensity_velocity = self._update_range( + self.intensity, self.intensity_velocity, self.intensity_range) + + +class SpotLight(BaseLight): + + FITTING_IMG = "spotlight.png" + + def __init__(self, **kw): + self.angular_velocity = kw.pop("angular_velocity", None) + super(SpotLight, self).__init__(**kw) + + def fitting_image(self): + fitting_image = super(SpotLight, self).fitting_image() + rot_fitting_image = pygame.transform.rotozoom( + fitting_image, self.ray_manager.direction - 90, 1) + + rot_rect = fitting_image.get_rect().copy() + rot_rect.center = rot_fitting_image.get_rect().center + rot_fitting_image = rot_fitting_image.subsurface(rot_rect).copy() + + return rot_fitting_image + + def tick(self): + if self.angular_velocity: + self.ray_manager.direction -= self.angular_velocity + self.ray_manager.update_shapes()