Introduction
In this tutorial, we will cover on how to change the orientation of our sprites using Flip.
| We can flip images horizontally, vertically or both |
|---|
| 0 – no flip |
| 1 – flip horizontally |
| 2 – flip vertically |
| 3 – flip both horizontally and vertically |
Example
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
from retroPy import rpy, actor, LoadSpriteStr
from Assets import heart
p_heart = LoadSpriteStr(heart.heart)
heart1 = actor(p_heart, 120, 120, 100, 0, 0) # flip = 0
heart2 = actor(p_heart, 140, 120, 100, 0, 0)
heart2.flip(1) #flip horizontally
heart3 = actor(p_heart, 120, 140, 100, 0, 0)
heart3.flip(2) #flip vertically
heart4 = actor(p_heart, 140, 140, 100, 0, 0)
heart4.flip(3) #flip vertically
heart1.draw()
heart2.draw()
heart3.draw()
heart4.draw()
rpy.show()
Image of the heart in different orientations using flip
In the next example we are using a sing sprite of boy moving in the right direction. When we need boy to walk in the left direction, we will flip the image horizontally.
player.flip(1)
Using the flip allows us to change the direction of the sprite without the need for extra sprites, thus allowing us to save more memory.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
from retroPy import rpy, Rect, actor, LoadSpriteStr
import Assets.boy
player = actor(LoadSpriteStr(Assets.boy.boy_walk_r), 120, 120, 300, 80, 0, 0, 224, 0, 224)
player.speed_x = 80
def update(dt):
if player.pos_x > 170:
player.speed_x = -80
player.flip(1)
if player.pos_x < 70:
player.speed_x = 80
player.flip(0)
player.update(dt)
def draw():
rpy.clear()
player.draw()
#=========================================================================
rpy.run(update, draw)
Our player should now face the direction he is walking towards without needing to create more sprites.
 |  |