{"id":816,"date":"2018-07-28T22:46:46","date_gmt":"2018-07-28T20:46:46","guid":{"rendered":"http:\/\/pythonprogramming.altervista.org\/?p=816"},"modified":"2018-08-27T07:54:42","modified_gmt":"2018-08-27T05:54:42","slug":"pygame-zero-4-catch-my-fall","status":"publish","type":"post","link":"https:\/\/pythonprogramming.altervista.org\/pygame-zero-4-catch-my-fall\/","title":{"rendered":"Pygame zero 4: Alien Fall"},"content":{"rendered":"

Adding some lines of code to the game<\/h2>\n

\"\"<\/p>\n

Let’s give a little of more code to our very simple game, making the alien want to catch the other aliens falling from the sky… instead of landing on the one o the ground.<\/p>\n

# python filename.py\r\n\r\nimport pgzrun\r\nfrom random import randint\r\n\r\nWIDTH = 800\r\nHEIGHT = 600\r\nalien_hurt = Actor('alien', midbottom=(WIDTH \/\/ 2, HEIGHT))\r\nalien = Actor('alien_hurt')\r\nalien.topright = 100, 10\r\nxpos = randint(0, 800)\r\nscore = 0\r\nlor = randint(0, 1)\r\nsomewhere = randint(0, 0)\r\n\r\n\r\ndef draw():\r\n    screen.fill('blue')\r\n    alien.draw()\r\n    alien_hurt.draw()\r\n\r\n\r\ndef update():\r\n    global score, somewhere\r\n    alien.y += 5 + somewhere\r\n    alien.x += somewhere\r\n    if alien_hurt.x > 30:\r\n        if keyboard.left:\r\n            alien_hurt.x -= 5\r\n    if alien_hurt.x < 770:\r\n        if keyboard.right:\r\n            alien_hurt.x += 5\r\n    if alien_hurt.colliderect(alien):\r\n        score += 1\r\n        respawn()\r\n    if alien.y > 600:\r\n        score -= 1\r\n        respawn()\r\n    if alien.x < 30 or alien.x > 770:\r\n        somewhere = -somewhere\r\n\r\n\r\ndef respawn():\r\n    global somewhere\r\n    print(score)\r\n    alien.y = 0\r\n    xpos = randint(0, 800)\r\n    alien.x = xpos\r\n    somewhere = randint(-3, 3)\r\n\r\npgzrun.go()\r\n<\/pre>\n