def enableRainEffect(self):
"""Enable the rain effects in this level"""
self._rain = Rain(self.levelSize)
class GameLevel(GridMapSupport):
"""This is the class of a game level.
Character move inside a level using some of its methods.
When the level is draw, after the background image, all groups stored in this level
are drawn ordered by zindex info.
A GameLevel object can store a lot of groups; those groups (of tipe GameGroup) can be updatable or not.
When a level is updated - calling the update(time_passed) method - on all groups of updatable type is
called the update method.
"""
def __init__(self, name, size, background=""):
"""Init a level object with a name and a size.
If a background file name is given, this image is loaded as background.
If you don't give a background then the level name (converted in a lowecase, less separated png file name)
is used instead.
If you really don't have a level image, please use a background parameter to None
"""
GridMapSupport.__init__(self)
self.name = name
self.levelSize = size
if background == '':
background = name.lower().replace(" ","-")+".png"
if background:
self._background = utils.load_image(background, directory="levels")
else:
self._background = None
self._topleft = (0,0)
self._centeringSpeed = 50
self._centeringHeading = None
self._groups = []
self._groups_toupdate = []
self._groups_todraw = []
self._rain = None
self.screenReferenceSprite = None
self.hero = None
self.timeIn = 0.
self.shadow = True
# The presentation object running
self.presentation = None
self.level_text = None
# This index will act on the ability of characters to hide in shadows in the level
self.stealthLevel = 1.
# Groups!
all = GameGroup("all")
dead = GameGroup("dead", drawable=True, updatable=True)
physical = GameGroup("physical", drawable=True, updatable=True)
# visual_obstacles are sprites that block character sight
visual_obstacles = GameGroup("visual_obstacles")
charas = GameGroup("charas")
enemies = GameGroup("enemies")
animations = GameGroup("animations", drawable=True, updatable=True)
top_animations = GameGroup("top_animations", drawable=True, updatable=True)
speech = GameGroup("speech", updatable=True) # speechs are handled in a special way
level_text = GameGroup("level_text")
exits = GameGroup("exits", drawable=True, updatable=True)
triggers = GameGroup("triggers", drawable=True, updatable=True)
tippable = GameGroup("tippable") # Tips are handled in a special way
self.addGroup(all)
self.addGroup(dead, zindex=5)
self.addGroup(physical, zindex=10)
self.addGroup(visual_obstacles)
self.addGroup(charas, zindex=10)
self.addGroup(enemies)
self.addGroup(animations, zindex=3)
self.addGroup(top_animations, zindex=20)
self.addGroup(speech)
self.addGroup(level_text, zindex=30)
self.addGroup(exits, zindex=3)
self.addGroup(triggers, zindex=4)
self.addGroup(tippable)
def __getitem__(self, key):
"""Get a group by its name, or look for a GameSprite with that name if no group is found.
"""
for group in self._groups:
if group[1].name==key:
return group[1]
# not found a group; check for a GameSprite
for group in self._groups:
for sprite in group[1].sprites():
if sprite.name==key:
return sprite
raise KeyError("Not found group or sprite named '%s'" % key)
def _setTopLeft(self, topleft):
self._topleft = self._normalizeDrawPart(topleft)
topleft = property(lambda self: self._topleft, _setTopLeft, doc="""The topleft drawing point inside the level background image""")
@property
def midbottom(self):
"""Midbottom of the screen on the level"""
return self.rect.midbottom
@property
def rect(self):
"""A pygame.Rect from the level topleft, with the screen size"""
return pygame.Rect(self.topleft, cblocals.GAME_SCREEN_SIZE)
@property
def center(self):
"""The point at the center of the drawn level part"""
return self.rect.center
def addGroup(self, group, zindex=10):
"""Add a new group the this level.
All group are added to a default zindex info of 10.
"""
self._groups.append( (zindex,group) )
self._groups.sort(lambda x,y: x[0]-y[0])
if group.updatable:
self._groups_toupdate.append( (zindex,group) )
self._groups_toupdate.sort(lambda x,y: x[0]-y[0])
if group.drawable:
self._groups_todraw.append( (zindex,group) )
self._groups_todraw.sort(lambda x,y: x[0]-y[0])
def generateRandomPoint(self, fromPoint=(), maxdistance=0):
"""Generate a random point on the level.
You can use this giving a distance and a start point to get a random point near that position.
Normally the point is taken at random on level size.
"""
if fromPoint and maxdistance:
offset_x = cbrandom.randint(-maxdistance,maxdistance)
offset_y = cbrandom.randint(-maxdistance,maxdistance)
startX = fromPoint[0] - maxdistance
endX = fromPoint[0] + maxdistance
startY = fromPoint[1] - maxdistance
endY = fromPoint[1] + maxdistance
else:
# If one of the not required param is missing, always use the normal feature
startX = 1
endX = self.levelSize[0]-1
startY = 1
endY = self.levelSize[1]-1
return self.normalizePointOnLevel(cbrandom.randint(startX,endX), cbrandom.randint(startY,endY))
def normalizePointOnLevel(self, x, y):
"""Given and x,y pair, normalize this to make this point valid on level coordinates"""
if x<1: x=1
elif x>self.levelSize[0]-1: x=self.levelSize[0]-1
if y<1: y=1
elif y>self.levelSize[1]-1: y=self.levelSize[1]-1
return x,y
def normalizeRectOnScreen(self, rect):
"""Given a rect, make this rect is always contained in the screen"""
w,h = cblocals.GAME_SCREEN_SIZE
if rect.left<0:
rect.left = 0
if rect.right>w:
rect.right = w
if rect.top<0:
rect.top = 0
if rect.bottom>h:
rect.bottom = h
return rect
def checkPointIsValidOnLevel(self, point, screenCoordinate=False):
"""Check if a coordinate is valid in current level.
If screenCoordinate is True, then x,y will be normalized to level coord before use
(calling transformToLevelCoordinate).
"""
if screenCoordinate:
x,y = self.transformToLevelCoordinate(point)
if x<1: return False
elif x>self.levelSize[0]-1: return False
if y<1: return False
elif y>self.levelSize[1]-1: return False
return True
def checkPointIsFree(self, point):
"""Check if a coordinate is related to a free point on the level"""
physical = self['physical']
point = self.transformToScreenCoordinate(point)
for sprite in physical.sprites():
if sprite.collide_rect.collidepoint(point):
return False
return True
def checkRectIsInLevel(self, r):
"""Check if a rect is inside the level area"""
levelRect = pygame.Rect( (0,0), self.levelSize)
return levelRect.contains(r)
def addSprite(self, sprite, firstPosition=None):
"""Add a sprite to this level at given position"""
if not firstPosition:
firstPosition = sprite.position
sprite.addToGameLevel(self, firstPosition)
# I memoize here sprites that use tips; tip can be evaluated False but not None
if sprite.getTip() is not None:
self['tippable'].add(sprite)
def getCloserEnemy(self, character):
"""Return an enemy in the character sight range, or None"""
sight = character.sightRange
group = self['charas']
enemies = []
for charas in group.sprites():
distanceFromCharas = character.distanceFrom(charas)
if character.side!=charas.side and distanceFromCharas<=sight:
# Check now if he can see the character
if character.hasFreeSightOn(charas):
if charas.stealth:
# A rogue charas reduce the character sight range
if distanceFromCharas <= int(sight * charas.getPreySightRangeReductionFactor()):
# ... and now the real check for the anti-stealth
if character.check_antiStealth(charas):
enemies.append(charas)
else:
enemies.append(charas)
if enemies:
return cbrandom.choice(enemies)
return None
def draw(self, screen):
"""Draw the level"""
physical = self['physical']
# 1 * Draw the background image
if self._background:
screen.blit(self._background.subsurface(pygame.Rect(self.topleft, cblocals.GAME_SCREEN_SIZE) ), (0,0) )
# 2 * Draw all sprite groups
for group in self._groups_todraw:
# special handling for the physical group
if group[1] is physical and not self.presentation:
group[1].draw(screen, self.hero)
else:
group[1].draw(screen)
if cblocals.DEBUG:
# 3 * Draw screen center (if in DEBUG mode)
xy, wh = self._getScreenCenter()
xy = self.transformToScreenCoordinate(xy)
pygame.draw.rect(screen, (50,250,250), (xy, wh), 1)
# 4 * Draw gripmap squares
self.drawGridMapSquares(screen)
self.drawRain(screen)
# Special use of the level_text group
if self['level_text']:
self['level_text'].draw(screen)
def update(self, time_passed):
"""Call the group update method on all (updatable) groups stored in this level"""
for group in self._groups_toupdate:
group[1].update(time_passed)
if self._rain:
self._rain.update(time_passed)
self.timeIn+=time_passed
def update_text(self, time_passed):
"""An update method that only works with the 'level_text' group"""
if len(self['level_text'])>0:
self['level_text'].update(time_passed)
return True
return False
def _normalizeDrawPart(self, topleft=None, size=None):
"""Called to be sure that the draw portion of level isn't out of the level total surface"""
x,y = topleft or self._topleft
w,h = size or self.levelSize
sw, sh = cblocals.GAME_SCREEN_SIZE
if x<0:
x=0
if y<0:
y=0
if x+sw>w:
x = w-sw
if y+sh>h:
y = h-sh
return x,y
def hasBackground(self):
"""Check is this level has a background image"""
return self._background is not None
def generateDeadSprite(self, corpse):
"""Using a character (commonly... very commonly... a DEAD ones!), generate a corpse.
Corpse is added to a group called "dead".
"""
sprite = GameSprite()
sprite.image = utils.getRandomImageFacingUp(corpse.images)
curRect = corpse.rect
newRect = pygame.Rect( curRect.topleft, sprite.image.get_rect().size )
newRect.midbottom = corpse.position
sprite.rect = newRect
self["dead"].add(sprite)
sprite.addToGameLevel(self, corpse.position)
def normalizeDrawPositionBasedOn(self, reference, time_passed):
"""Slowly move drawn portion of the total level, for centering it on the given reference object.
reference can be a GameSprite or a position tuple info.
"""
if type(reference)==tuple:
referencePointOnScreen = reference
else:
referencePointOnScreen = reference.position
if self.isPointAtScreenCenter(referencePointOnScreen, (160,160) ):
return
heading = Vector2.from_points(self.center, referencePointOnScreen)
# More near to screen border, faster will be the screen centering procedure
speed = self._centeringSpeed
magnitude = heading.get_magnitude()
if magnitude<120:
pass
elif magnitude<150:
speed = speed*3
elif magnitude<200:
speed = speed*5
elif magnitude>=250:
speed = speed*6
heading.normalize()
distance = time_passed * speed
movement = heading * distance
x = movement.get_x()
y = movement.get_y()
self.topleft = (self.topleft[0]+x,self.topleft[1]+y)
def _getScreenCenter(self, centerSize=(200,200)):
"""Return the screen center rect as ( (x,y), (w,h) )
w and h are taken by the optional centerSize param.
"""
cx, cy = self.center
return (cx-centerSize[0]/2,cy-centerSize[1]/2), centerSize
def isPointAtScreenCenter(self, refpoint, centerSize=(200,200)):
"""This method return true if a given point is inside a rect of given size.
The rect is placed at the screen center
"""
cx, cy = self.center
rect = pygame.Rect( self._getScreenCenter(centerSize) )
return rect.collidepoint(refpoint)
def transformToLevelCoordinate(self, position):
"""Given a screen coordinate, transform it to level absolute position"""
x, y = position
tx, ty = self.topleft
return (int(tx+x), int(ty+y))
def transformToScreenCoordinate(self, position):
"""Given an level coordinate, transform it to screen position"""
x, y = position
tx, ty = self.topleft
return (x-tx, y-ty)
def addPhysicalBackground(self, position, size, groups=['physical']):
"""Add a PhysicalBackground instance to the current level.
Use groups param to add the sprite to some groups stored in the level also.
See PhysicalBackground for more info.
"""
pb = PhysicalBackground( position, size )
for group_name in groups:
group = self[group_name]
group.add(pb)
self.addSprite(pb, position)
def addPhysicalSightBlockingBackground(self, position, size, groups=['physical','visual_obstacles']):
"""Like addPhysicalBackground but also add the sprite to the 'visual_obstacles' group"""
self.addPhysicalBackground(position, size, groups)
def addAnimation(self, position, animation, groups=['animations']):
"""Add an animation sprite to this level.
If animation parameter is a string, the engine try to load an animation with that name.
"""
if type(animation)==str:
animation = utils.loadAnimationByName(animation, position)
for group_name in groups:
group = self[group_name]
group.add(animation)
# some animation can change original position
if animation.position:
position = animation.position
self.addSprite(animation, position)
def addAnimations(self, positions, animation, groups=['animations']):
"""Service method for call addAnimation multiple times, for fast add the same animation in many
places on the level.
"""
for position in positions:
self.addAnimation(position, animation, groups=groups)
def enableRainEffect(self):
"""Enable the rain effects in this level"""
self._rain = Rain(self.levelSize)
def drawRain(self, surface):
"""Draw the rain effect on the surface passed.
This call do something only if the level has inited the rain effect calling GameLevel.enableRainEffect()
"""
if self._rain:
self._rain.draw(surface)
def enablePresentation(self, presentation, presentation_dir="data/presentations"):
"""Load a presentation using its name and return a Presentation object.
Also store current level presentation
"""
if not presentation.endswith(".cbp"):
presentation+=".cbp"
pp = Presentation(self, presentation, presentation_dir=presentation_dir)
self.presentation = pp
pp.enablePresentationMode()
return pp
# ******* Level text methods *******
def _useLevelText(self, text, type=cblocals.LEVEL_TEXT_TYPE_NORMAL):
level_text = self.level_text
if not level_text:
level_text = LevelText(self, text, type)
level_text.addToGameLevel(self, level_text.position)
self.level_text = level_text
else:
level_text.addText(text)
def levelTextIntro(self, text, colophon_flag=False):
self._useLevelText(text, type=cblocals.LEVEL_TEXT_TYPE_BLACKSCREEN)
if colophon_flag:
self.level_text.colophon = True
def levelText(self, text):
self._useLevelText(text)
# ******* /Level text methods *******
def displayTip(self, surface, tip_sprite):
"""Display a GameSprite's tip on the surface, and control the tip position"""
tip_structure = tip_sprite.getTip()
if not tip_structure:
return
text = tip_structure['text']
color = tip_structure['color']
font = tip_structure.get('font',cblocals.default_font)
background = tip_structure.get('background',None)
fw,fh = font.size(text)
rect = tip_sprite.physical_rect
x,y = rect.midtop
x=x-fw/2
y=y-fh
font_rect = pygame.Rect( (x,y),(fw,fh) )
# Draw sprites's tip only if sprite is inside the screen
if self.rect.colliderect(rect.move(self.topleft)):
font_rect = self.normalizeRectOnScreen(font_rect)
tip = font.render(text, True, color)
if background:
pygame.draw.rect(surface, background, font_rect, 0)
surface.blit(tip, font_rect.topleft)
def blitShadow(self, surface, refSprite):
"""Blit game general shadow.
If the shadow has a light area, its based on a reference sprite.
Do nothing if GameLevel.shadow is False
"""
if self.shadow:
if not self.presentation:
if not refSprite.outOfScreen:
spriteposx, spriteposy = self.transformToScreenCoordinate(refSprite.position)
imgsizew, imgsizeh = cblocals.SHADOW_IMG_SIZE
surface.blit(cblocals.shadow_image, (spriteposx-imgsizew/2, spriteposy-imgsizeh/2))
else:
surface.blit(cblocals.total_shadow_image_09, (0,0) )
else:
surface.blit(cblocals.total_shadow_image_05, (0,0) )