def update(self, dt):
direction = 0
if InputWatcher.isDown(pygame.K_LEFT) or InputWatcher.isDown(pygame.K_a):
direction -= 1
if InputWatcher.isDown(pygame.K_RIGHT) or InputWatcher.isDown(pygame.K_d):
direction += 1
# Apply player or friction force
if direction == -1:
self.velocity[0] -= PLAYER_FORCE
elif direction == 1:
self.velocity[0] += PLAYER_FORCE
else:
self.velocity[0] *= FRICTION_FORCE
# Clamp velocity
if (self.velocity[0] > MAX_SPEED):
self.velocity[0] = MAX_SPEED
if (self.velocity[0] < -MAX_SPEED):
self.velocity[0] = -MAX_SPEED
# Set position from velocity
self.position = [self.position[0] + self.velocity[0] * dt, self.position[1] + self.velocity[1] * dt]
# Clamp position in scene
if (self.position[0] > SHIP_SCREEN_RIGHT):
self.position[0] = SHIP_SCREEN_RIGHT
self.velocity = [0,0]
if (self.position[0] < 0):
self.position[0] = 0
self.velocity = [0,0]
def update(self, dt):
InputWatcher.update()
self.ship.update(dt)
self.debugRenderer.update()
if InputWatcher.wasPressed(pygame.K_SPACE):
# HACK CP
entity = Entity.EntityList[random.randint(1,4)](self.ship.getWorldDropPosition())
entity.applyImpulse(self.ship.getWorldVelocity())
self.entityList.append(entity)
def gameLoop():
dinoScene=FIRST_SCENE.DinoScene()
# Game loop
currentTime = pygame.time.get_ticks()
IS_PLAYING = True
while IS_PLAYING:
previousTime = currentTime
currentTime = pygame.time.get_ticks()
deltaTime = currentTime - previousTime
# Reset the screen
CoreApp.screen.fill((0,0,0,0))
# HACK: If you drag screen in Windows, it locks main thread
# This averts the bug, but may introduce new bugs. Look into this - CP
if (deltaTime > 100):
deltaTime = 0
# Step the world - times by 0.001 to convert to seconds
CoreApp.world.Step((deltaTime) * 0.001, CoreApp.VELOCITY_ITERATION, CoreApp.POSITION_ITERATION)
dinoScene.update(deltaTime)
dinoScene.draw()
# Swap to other screen buffer
pygame.display.flip()
# One second / Target FPS is ideal frame time lapse
timeLapse = pygame.time.get_ticks() - currentTime
if (timeLapse < 1000 / CoreApp.FPS):
pygame.time.wait(1000 / CoreApp.FPS - timeLapse)
# Must empty event or game stalls
for event in pygame.event.get():
if event.type == QUIT:
IS_PLAYING = False
# TEMP: Leave scene if press ESC - CP
IS_PLAYING = not InputWatcher.isDown(pygame.K_ESCAPE)
def update(self):
if InputWatcher.wasPressed(pygame.K_BACKSPACE):
self.debugFlag = not self.debugFlag