Help me find a way to make the lasers fire in a certain direction.
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last edited by cccI need the type of code so that depending on which direction button was pressed last, the lasers fires in that direction. My code so far only shoots in a positive x axis. I need it to shoot in negative x axis, and positive and negative y axis as well.
Here is my code so far:from scene import * import turtle import ui import math import random A = Action() #Setting up background colour for the entire scene class Game(Scene): def setup(self): self.bg = SpriteNode('spc:BackgroundBlack') self.lasers = [] #Creating the player self.Player = SpriteNode('shp:RoundRect') self.Player.color = ("cyan") self.Player.anchor_point = (0.5, 0) self.Player.position = (512, 400) self.add_child(self.Player) #Controlling the player self.UpCrtl = SpriteNode('iow:arrow_up_b_32') self.UpCrtl.x_scale = 3.5/1.0 self.UpCrtl.y_scale = 3.5/1.0 self.UpCrtl.alpha = 0.5 self.UpCrtl.position = (175, 295) self.add_child(self.UpCrtl) self.DownCrtl = SpriteNode('iow:arrow_down_b_32') self.DownCrtl.x_scale = 3.5/1.0 self.DownCrtl.y_scale = 3.5/1.0 self.DownCrtl.alpha = 0.5 self.DownCrtl.position = (175, 130) self.add_child(self.DownCrtl) self.RightCrtl = SpriteNode('iow:arrow_right_b_32') self.RightCrtl.x_scale = 3.5/1.0 self.RightCrtl.y_scale = 3.5/1.0 self.RightCrtl.alpha = 0.5 self.RightCrtl.position = (250, 212.5) self.add_child(self.RightCrtl) self.LeftCrtl = SpriteNode('iow:arrow_left_b_32') self.LeftCrtl.x_scale = 3.5/1.0 self.LeftCrtl.y_scale = 3.5/1.0 self.LeftCrtl.alpha = 0.5 self.LeftCrtl.position = (100, 212.5) self.add_child(self.LeftCrtl) #The button for shooting self.laserButton = SpriteNode('shp:Circle') self.laserButton.color = ('gray') self.laserButton.x_scale = 3/1 self.laserButton.y_scale = 3/1 self.add_child(self.laserButton) self.laserButton.position = (1000, 212.5) def update(self): for touch in self.touches.values(): if touch.location in self.LeftCrtl.bbox: #left button pressed new_x = self.Player.position.x - 5 if new_x >= 0 and new_x <= 1100: self.Player.position = (new_x, self.Player.position.y) if touch.location in self.RightCrtl.bbox: #right button pressed new_x = self.Player.position.x + 5 if new_x >= 0 and new_x <= 1100: self.Player.position = (new_x, self.Player.position.y) if touch.location in self.UpCrtl.bbox: new_y = self.Player.position.y + 5 if new_y >= 0 and new_y <= 800: self.Player.position = (self.Player.position.x, new_y) if touch.location in self.DownCrtl.bbox: new_y = self.Player.position.y - 5 if new_y >= 0 and new_y <= 800: self.Player.position = (self.Player.position.x, new_y) if touch.location in self.laserButton.bbox: new_laser = SpriteNode('spc:LaserBlue6') new_laser.position = (self.Player.position.x, self.Player.position.y + 60) self.add_child(new_laser) self.lasers.append(new_laser) for l in self.lasers: l.position = (l.position.x, l.position.y + 7.5) if l.position.y > 800: l.remove_from_parent() self.lasers.remove(l) if __name__ == '__main__': run(Game(), LANDSCAPE, show_fps=True)
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last edited byWait, how do find the screen width and height? And what about location?
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last edited by
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last edited byRe spamming, one approach is, in your button handling code, to keep track of self.t, and self.lastfire_time. When current time minus last fire time is > some value, reset the last fire time to current time, and fire a laser. Otherwise, pass
BTW, in your laser loop, you will need to check if the laser is off screen (not in self.bounds), then delete the object from the scene. Otherwise your scene will eventually bog down or crash because it is moving millions of laser objects.
This could also be done in your check_collisions method where you see if your lasers hit your enemies.
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last edited by@cvp And what about location?
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last edited by cccposition, not location.If you want to wrap, you need to fundamentally change your button logic, since you check limits
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last edited by BurntRiceI have added this:
width, height = ui.get_screen_size()
And then added this later:
if self.Player.position.x <= 0 or self.Player.position.x >= 1112:
self.Player.position.x %= width
if self.Player.position.y <= 0 or self.Player.position.y >= 834:
self.Player.position.y %= height
This didn’t work. I checked if I had gotten the width and height variables in a seperate script, and I did. I am now stumped.
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last edited byWhat do you think your if statement does?
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last edited byWhenever the Players position.x is equal to or smaller than 0 or whenever the position.x is equal to or greater than 1112, you do the remainder of the division of the screen height.
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last edited byPost your button handling code again... You used to have checks that the new position was in the screen.
You actually don't need the if statements --
You could say player.position.x%=self.width, which will always cause it to wrap around.
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last edited by cccHere you go:
def handle_button_presses(self): rotationAdd = math.pi/180 self.Player.location = self.Player.position for touch in self.touches.values(): if touch.location in self.LeftCrtl.bbox: actions = [A.rotate_by(math.pi/180)] self.Player.rotation = self.Player.rotation + rotationAdd self.Player.run_action(A.sequence(actions)) if touch.location in self.RightCrtl.bbox: actions = [A.rotate_by(math.pi/-180)] self.Player.rotation = self.Player.rotation - rotationAdd self.Player.run_action(A.sequence(actions)) if touch.location in self.UpCrtl.bbox: direction = Vector2(-math.sin(self.Player.rotation), math.cos(self.Player.rotation)) self.Player.position += direction*3 if self.Player.position.x <= 0 or self.Player.position.x >= 1112: self.Player.position.x %= width if self.Player.position.y <= 0 or self.Player.position.y >= 834: self.Player.position.y %= heightI did change the movement code a little.
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last edited by@BurntRice said:
if self.Player.position.x <= 0 or self.Player.position.x >= 1112: self.Player.position.x %= width if self.Player.position.y <= 0 or self.Player.position.y >= 834: self.Player.position.y %= height@JonB said:
You actually don't need the if statements
self.Player.position.x %= width self.Player.position.y %= height
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last edited byIs width an height actually defined someplace?
What isn't working in your code? Is your player rotating and moving as expected? Is only the wrapping broken?
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last edited byOnly the wrapping.
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last edited bywidth, height = ui.get_screen_size()
I think this is right. I did a seperate script where I print it out inside the console, and it worked.
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last edited byI tried placing it self.update, but then it wouldn’t work.
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last edited byCan we please get the code full listing? Please use the
</>icon above the post edit box to paste your code so it is formatted for this forum.
```
Insert Code Here
```
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last edited by cccfrom scene import * import math import random import sound import ui A = Action() width, height = ui.get_screen_size() #Setting up meteorites #Setting up background colour for the entire scene class Game(Scene): def setup(self): self.bg = SpriteNode('spc:BackgroundBlack') self.lasers = [] self.items = [] self.LaserTime = 0 self.frame_counter = 0 self.meteor = [] #Creating the player self.Player = SpriteNode('iow:arrow_up_b_32') self.Player.color = (1.0, 1.0, 1.0) self.Player.anchor_point = (0.5, 0.5) self.Player.x_scale = 2/1.0 self.Player.y_scale = 3/1.0 self.Player.position = (512, 400) self.Player.rotation = 0.0 self.add_child(self.Player) self.UpCrtl = SpriteNode('iow:arrow_up_b_32') self.UpCrtl.x_scale = 3.5/1.0 self.UpCrtl.y_scale = 3.5/1.0 self.UpCrtl.alpha = 0.5 self.UpCrtl.position = (175, 295) self.add_child(self.UpCrtl) self.RightCrtl = SpriteNode('iow:arrow_right_b_32') self.RightCrtl.x_scale = 3.5/1.0 self.RightCrtl.y_scale = 3.5/1.0 self.RightCrtl.alpha = 0.5 self.RightCrtl.position = (250, 212.5) self.add_child(self.RightCrtl) self.LeftCrtl = SpriteNode('iow:arrow_left_b_32') self.LeftCrtl.x_scale = 3.5/1.0 self.LeftCrtl.y_scale = 3.5/1.0 self.LeftCrtl.alpha = 0.5 self.LeftCrtl.position = (100, 212.5) self.add_child(self.LeftCrtl) #The button for shooting self.laserButton = SpriteNode('shp:Circle') self.laserButton.color = ('gray') self.laserButton.x_scale = 3/1 self.laserButton.y_scale = 3/1 self.add_child(self.laserButton) self.laserButton.position = (1000, 212.5) #The score label self.score_label = LabelNode(text='Score: 0') self.score_label.anchor_point = (0, 0) self.score_label.position = (10, 790) self.score_label.font = ('Joystix', 30) self.add_child(self.score_label) #Movement code. def update(self): self.handle_button_presses() self.move_lasers() self.update_lasers() self.spawn_meteor() width, height = ui.get_screen_size() self.LaserTime = self.LaserTime + 1 def handle_button_presses(self): rotationAdd = math.pi/180 self.Player.location = self.Player.position for touch in self.touches.values(): if touch.location in self.LeftCrtl.bbox: actions = [A.rotate_by(math.pi/180)] self.Player.rotation = self.Player.rotation + rotationAdd self.Player.run_action(A.sequence(actions)) if touch.location in self.RightCrtl.bbox: actions = [A.rotate_by(math.pi/-180)] self.Player.rotation = self.Player.rotation - rotationAdd self.Player.run_action(A.sequence(actions)) if touch.location in self.UpCrtl.bbox: direction = Vector2(-math.sin(self.Player.rotation), math.cos(self.Player.rotation)) self.Player.position += direction*3 self.Player.position.x %= width self.Player.position.y %= height def move_lasers(self): for touch in self.touches.values(): if touch.location in self.laserButton.bbox and self.LaserTime >= 15: #reset the time self.LaserTime = 0 new_laser = SpriteNode('shp:Circle') new_laser.x_scale = 0.3/1.0 new_laser.y_scale = 0.3/1.0 new_laser.position = self.Player.position new_laser.rotation = self.Player.rotation self.add_child(new_laser) self.lasers.append(new_laser) sound.play_effect('arcade:Laser_6') def update_lasers(self): for l in self.lasers: l.direction = Vector2(-math.sin(l.rotation), math.cos(l.rotation))*10 l.position += l.direction if l.position.x < 0: l.remove_from_parent() self.lasers.remove(l) if l.position.x > 1112: l.remove_from_parent() self.lasers.remove(l) if l.position.y < 0: l.remove_from_parent() self.lasers.remove(l) if l.position.y > 834: l.remove_from_parent() self.lasers.remove(l) def spawn_meteor(self): self.frame_counter = self.frame_counter + 1 if self.frame_counter >= 60: self.frame_counter = 0 new_meteor = SpriteNode('spc:MeteorGraySmall1') new_meteor.position = (random.randint(0, 1024), 834) self.add_child(new_meteor) self.meteor.append(new_meteor) for meteor in self.meteor: meteor.position = (meteor.position.x, meteor.position.y - 5) if meteor.position.y < - 100: meteor.remove_from_parent() self.meteor.remove(meteor) if __name__ == '__main__': run(Game(), LANDSCAPE, show_fps=True)
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last edited by cccSo, (as is often the case...) I was wrong about how to do the wrap around when the player gets to the edge of the screen.
self.Player.position.x %= width self.Player.position.y %= height # must be changed to... self.Player.position = (self.Player.position.x % self.size.w, self.Player.position.y % self.size.h)This is because position is a
scene.Pointwhich is scene.Vector2 which behaves more like a tuple than a list.Also, you can safely delete all lines containing
self.Player.location.
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last edited by
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last edited by cccupdate_lasers()can be simplified...def update_lasers(self): for laser in self.lasers: laser.direction = Vector2(-math.sin(laser.rotation), math.cos(laser.rotation))*10 laser.position += laser.direction if laser.position not in self.bounds: # laser has gone off the screen laser.remove_from_parent() self.lasers.remove(laser)
