engine.py

HP_HUD_STRING_WIDTH = 6

class Renderer:

    def clear(self):
        self.area.clear()

        for i in range(0, self.height):
            self.area.append([])
            for j in range(0, self.width):
                self.area[i].append(" ")

    def __init__(self, width, height):
        self.width = width
        self.height = height
        self.area = []

        self.clear()

    def present(self):
        for i in range(0, self.height):
            for j in range(0, self.width):
                print(self.area[i][j], end="")
            print()

    def draw_rect(self, rect):
        for i in range(0, rect.height):
            for j in range(0, rect.width):
                if (rect.rel_y + i >= 0 and rect.rel_y + i < self.height) and (rect.rel_x + j >= 0 and rect.rel_x + j < self.width):
                    self.area[rect.rel_y + i][rect.rel_x + j] = rect.char

    def draw_sprite(self, sprite):
        for i in range(0, sprite.height):
            for j in range(0, sprite.width):
                if (sprite.rel_y + i >= 0 and sprite.rel_y + i < self.height) and (sprite.rel_x + j >= 0 and sprite.rel_x + j < self.width):
                    self.area[sprite.rel_y + i][sprite.rel_x + j] = sprite.area[i][j]


class Rect:

    def __init__(self, camera, x, y, width, height, char):
        self.x = x
        self.y = y
        self.rel_x = x + camera.x
        self.rel_y = y + camera.y
        self.width = width
        self.height = height
        self.char = char

    def update(self, camera):
        self.rel_x = self.x + camera.x
        self.rel_y = self.y + camera.y

    def move(self, x, y):
        self.x += x
        self.y += y


class Sprite(Rect):

    def __init__(self, camera, x, y, width, height, char):
        Rect.__init__(self, camera, x, y, width, height, char)
        self.area = []

        for i in range(0, self.height):
            self.area.append([])
            for j in range(0, self.width):
                self.area[i].append(self.char)

    def set_from_file(self, path):
        with open(path, "r") as sprite_file:
            content = sprite_file.read()

            self.height = 0
            self.width = 0

            for i in range(0, len(content)):
                if content[i] == "\n":
                    self.height += 1

            for i in range(0, len(content)):
                if content[i] == "\n":
                    break
                self.width += 1

            self.area.clear()

            for i in range(0, self.height):
                self.area.append([])
                for j in range(0, self.width):
                    self.area[i].append(" ")
                    self.area[i][j] = content[(self.width + 1) * i + j]

class Entity(Sprite):

    def __init__(self, camera, x, y, health, char):
        Sprite.__init__(self, camera, x, y, 1, 1, char)
        self.health = health


class Player(Entity):

    def __init__(self, camera, x, y):
        Entity.__init__(self, camera, x, y, 100, "@")
        self.level = 1


class Camera:

    def __init__(self, x, y):
        self.x = x
        self.y = y

    def move(self, x, y):
        self.x += x
        self.y += y


class Hud:

    def __init__(self, camera, player, width, height):
        self.hp_hud = Sprite(camera, 0 - camera.x, 1 - camera.y, HP_HUD_STRING_WIDTH + 2, 3, " ")

    def update(self, player):
        hp_hud_string = f"HP:{player.health}"

        if len(hp_hud_string) < HP_HUD_STRING_WIDTH:
            hp_hud_string.append(" ")

        for i in range(0, HP_HUD_STRING_WIDTH):
            self.hp_hud.area[1][i + 1] = hp_hud_string[i]