tilemap.py

import pygame as pg
import pytmx
from settings import *
from settings import TILESIZE

def collide_hit_rect(one, two):
	return one.hit_rect.colliderect(two.hit_rect)

class TiledMap:
	def	__init__(self, filename):
		tm = pytmx.load_pygame(filename, pixelalpha=True)
		self.width = tm.width * tm.tilewidth
		self.height = tm.height * tm.tileheight
		self.tmxdata = tm

	def render(self, surface):
		ti = self.tmxdata.get_tile_image_by_gid
		for layer in self.tmxdata.visible_layers:
			if isinstance(layer, pytmx.TiledTileLayer):
				for x, y, gid, in layer:
					tile = ti(gid)
					if tile:
						surface.blit(tile, (x * self.tmxdata.tilewidth, y * self.tmxdata.tileheight))

	def make_map(self):
		temp_surface = pg.Surface((self.width, self.height))
		self.render(temp_surface)
		return temp_surface

class Camera:
	def __init__(self, width, height):
		self.camera = pg.Rect(0, 0, width, height)
		self.width = width
		self.height = height

	def apply(self, entity):
		return entity.rect.move(self.camera.topleft)

	def apply_rect(self, rect):
		return rect.move(self.camera.topleft)

	def update(self, target):
		x = -target.rect.x + int(WIDTH / 2)
		y = -target.rect.y + int(WIDTH / 4)

		# limit scrolling at map size
		x = min(0, x) #left
		y = min(0, y) #top
		x = max(-(self.width -WIDTH), x) #right
		y = max(-(self.height - HEIGHT), y) #bottom
		self.camera = pg.Rect(x, y, self.width, self.height)