"""
Example showing how to draw text to the screen.If Python and Arcade are installed, this example can be run from the command line with:
python -m arcade.examples.drawing_text
"""
import arcade# 设置屏幕参数
SCREEN_WIDTH = 1200
SCREEN_HEIGHT = 800
SCREEN_TITLE = "Drawing Text Example"
# 设置字体参数
DEFAULT_LINE_HEIGHT = 45
DEFAULT_FONT_SIZE = 20class MyGame(arcade.Window):"""Main application class."""def __init__(self, width, height, title):super().__init__(width, height, title)# 初始化背景颜色self.background_color = arcade.color.BEIGE#  初始化文本参数self.text_angle = 0self.time_elapsed = 0.0def on_update(self, delta_time):# 没过一帧变化一次self.text_angle += 1self.time_elapsed += delta_timedef on_draw(self):"""Render the screen."""# This command should happen before we start drawing. It will clear# the screen to the background color, and erase what we drew last frame.self.clear()# 清屏# Add the screen title# 写一行文本start_x = 0start_y = SCREEN_HEIGHT - DEFAULT_LINE_HEIGHT * 1.5arcade.draw_text("Text Drawing Examples",start_x,start_y,arcade.color.BLACK,DEFAULT_FONT_SIZE * 2,width=SCREEN_WIDTH,align="center")# start_x and start_y make the start point for the text. We draw a dot to make it# easy too see the text in relation to its start x and y.start_x = 10start_y = SCREEN_HEIGHT - DEFAULT_LINE_HEIGHT * 3arcade.draw_text("Fonts:",start_x,start_y,arcade.color.FRENCH_WINE,DEFAULT_FONT_SIZE, bold=True)# Move the y value down to create another line of textstart_y -= DEFAULT_LINE_HEIGHTarcade.draw_text("Default Font (Arial)",start_x,start_y,arcade.color.BLACK,DEFAULT_FONT_SIZE)# Show some built-in fontsstart_y -= DEFAULT_LINE_HEIGHTarcade.draw_text("Kenney Blocks Font",start_x,start_y,arcade.color.BLACK,DEFAULT_FONT_SIZE,font_name="Kenney Blocks")start_y -= DEFAULT_LINE_HEIGHTarcade.draw_text("Kenney Future Font",start_x,start_y,arcade.color.BLACK,DEFAULT_FONT_SIZE,font_name="Kenney Future")start_y -= DEFAULT_LINE_HEIGHTarcade.draw_text("Kenney High Font",start_x,start_y,arcade.color.BLACK,DEFAULT_FONT_SIZE,font_name="Kenney High")start_y -= DEFAULT_LINE_HEIGHTarcade.draw_text("Kenney High Square Font",start_x,start_y,arcade.color.BLACK,DEFAULT_FONT_SIZE,font_name="Kenney High Square")start_y -= DEFAULT_LINE_HEIGHTarcade.draw_text("Kenney Mini Square Font",start_x, start_y,arcade.color.BLACK,DEFAULT_FONT_SIZE,font_name="Kenney Mini Square")start_y -= DEFAULT_LINE_HEIGHTarcade.draw_text("Kenney Pixel Font",start_x, start_y,arcade.color.BLACK,DEFAULT_FONT_SIZE,font_name="Kenney Pixel")start_y -= DEFAULT_LINE_HEIGHTarcade.draw_text("Kenney Pixel Square Font",start_x, start_y,arcade.color.BLACK,DEFAULT_FONT_SIZE,font_name="Kenney Pixel Square")start_y -= DEFAULT_LINE_HEIGHTarcade.draw_text("Kenney Rocket Font",start_x, start_y,arcade.color.BLACK,DEFAULT_FONT_SIZE,font_name="Kenney Rocket")start_y -= DEFAULT_LINE_HEIGHTarcade.draw_text("Kenney Rocket Square Font",start_x, start_y,arcade.color.BLACK,DEFAULT_FONT_SIZE,font_name="Kenney Rocket Square")start_y -= DEFAULT_LINE_HEIGHT# When trying to use system fonts, it can be risky to specify# only a single font because someone else's computer might not# have it installed. This is especially true if they run a# different operating system. For example, if you are on Windows# and a friend has a mac or Linux, they might not have the same# fonts. Your game could look different or broken on their computer.# One way around that is to provide multiple options for draw_text# to try. It will use the first one it finds, and use Arial as a# default if it can't find any of them.# In the example below, draw_text is given a tuple of names for very# similar fonts, each of which is common on a different major# operating systems.arcade.draw_text("Times New Roman (Or closest match on system)",start_x, start_y,arcade.color.BLACK,DEFAULT_FONT_SIZE,font_name=("Times New Roman",  # Comes with Windows"Times",  # MacOS may sometimes have this variant"Liberation Serif"  # Common on Linux systems))start_y -= DEFAULT_LINE_HEIGHTarcade.draw_text("Multi-Line\ntext using\n\\n characters.",start_x, start_y,arcade.color.BLACK,DEFAULT_FONT_SIZE / 2,multiline=True,width=300)start_y -= DEFAULT_LINE_HEIGHT * 1.5arcade.draw_text("Wrapping really long text automatically to a new line. ""The quick brown fox jumped over the lazy dogs.",start_x,start_y,arcade.color.BLACK,DEFAULT_FONT_SIZE / 2,multiline=True,width=300)# --- Column 2 ---start_x = 750start_y = SCREEN_HEIGHT - DEFAULT_LINE_HEIGHT * 3arcade.draw_text("Text Positioning:",start_x,start_y,arcade.color.FRENCH_WINE,DEFAULT_FONT_SIZE,bold=True)# start_x and start_y make the start point for the text.# We draw a dot to make it easy too see the text in relation to# its start x and y.start_y -= DEFAULT_LINE_HEIGHTarcade.draw_point(start_x, start_y, arcade.color.BARN_RED, 5)arcade.draw_text("Default of 'baseline' and 'Left'",start_x,start_y,arcade.color.BLACK,DEFAULT_FONT_SIZE)start_y -= DEFAULT_LINE_HEIGHTarcade.draw_point(start_x, start_y, arcade.color.BARN_RED, 5)arcade.draw_text("'bottom' and 'left'",start_x,start_y,arcade.color.BLACK,DEFAULT_FONT_SIZE,anchor_x="left",anchor_y="bottom")start_y -= DEFAULT_LINE_HEIGHTarcade.draw_point(start_x, start_y, arcade.color.BARN_RED, 5)arcade.draw_text("'top' and 'left'",start_x, start_y,arcade.color.BLACK,DEFAULT_FONT_SIZE,anchor_x="left",anchor_y="top")start_y -= DEFAULT_LINE_HEIGHT * 2arcade.draw_point(start_x, start_y, arcade.color.BARN_RED, 5)arcade.draw_text("'baseline' and 'center'",start_x, start_y,arcade.color.BLACK,DEFAULT_FONT_SIZE,anchor_x="center",anchor_y="baseline")start_y -= DEFAULT_LINE_HEIGHTarcade.draw_point(start_x, start_y, arcade.color.BARN_RED, 5)arcade.draw_text("'baseline' and 'right'",start_x,start_y,arcade.color.BLACK,DEFAULT_FONT_SIZE,anchor_x="right",anchor_y="baseline")start_y -= DEFAULT_LINE_HEIGHTarcade.draw_point(start_x, start_y, arcade.color.BARN_RED, 5)arcade.draw_text("'center' and 'center'",start_x,start_y,arcade.color.BLACK,DEFAULT_FONT_SIZE,anchor_x="center",anchor_y="center")start_y -= DEFAULT_LINE_HEIGHT * 4# start_x = 0# start_y = 0arcade.draw_point(start_x, start_y, arcade.color.BARN_RED, 5)arcade.draw_text("Rotating Text",start_x, start_y,arcade.color.BLACK,DEFAULT_FONT_SIZE,anchor_x="center",anchor_y="center",rotation=self.text_angle)def main():MyGame(SCREEN_WIDTH, SCREEN_HEIGHT, SCREEN_TITLE)arcade.run()if __name__ == "__main__":main()