上传新文件

fountainParticles.py

+from utility import *
+import pygame,random
+vec = pygame.math.Vector2
+from particle import *
+
+class FountainParticle(Particle):
+    def __init__(self,main,x,y,col):
+        self.main = main
+        self.position = vec(x,y)
+        #random initial angle and velocity
+        self.angle = random.randint(-1,1)
+        self.mag = random.randint(-500,-400)
+        self.velocity = vec(0,self.mag).rotate(0)
+        self.acceleration = vec(0,0)
+        self.birthTime = pygame.time.get_ticks()
+        self.size_counter_time = pygame.time.get_ticks()
+        #random lifespan
+        self.activeDuration = random.choice([3000,4000,5000,6000])
+        self.colorCollection = col
+        self.size = 3
+        #posDir is a check for postive direction, half the particles will have positive x velocity half will have negetive
+        self.posDir = False
+        randInt = random.choice([0,1])
+        if randInt == 1:
+            self.posDir = True
+        self.XVelOffset = random.randint(0,70)
+
+    def draw(self):
+        #select random color and draw
+        choice = random.choice(self.colorCollection)
+        pygame.draw.circle(self.main.screen,choice,(int(self.position.x),int(self.position.y)),self.size)
+
+    def update(self):
+        #die when lifespan over
+        now = pygame.time.get_ticks()
+        if now-self.birthTime > self.activeDuration:
+            self.main.FountainParticles.remove(self)   
+        #decrease size after set interval (JUST AS A TEST)
+        if now - self.size_counter_time > 200:
+            self.size_counter_time = now
+            self.size-= 1
+            if self.size < 2 :
+                self.size = 2  
+        if self.posDir:
+            self.position.x += self.XVelOffset*self.main.dt
+        if not self.posDir:
+            self.position.x -= self.XVelOffset*self.main.dt
+        self.update_position() #From Particle class
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