9.27: Drawing a Graphical Health Meter

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Page ID: 14646

Al Sweigart

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def drawHealthMeter(currentHealth):
    for i in range(currentHealth): # draw red health bars
        pygame.draw.rect(DISPLAYSURF, RED,   (15, 5 + (10 * MAXHEALTH) - i * 10, 20, 10))
    for i in range(MAXHEALTH): # draw the white outlines
        pygame.draw.rect(DISPLAYSURF, WHITE, (15, 5 + (10 * MAXHEALTH) - i * 10, 20, 10), 1)

To draw the health meter, first the for loop on line 2 [317] draws the filled-in red rectangle for the amount of health the player has. Then the for loop on line 4 [319] draws an unfilled white rectangle for all of the possible health the player could have (which is the integer value stored in the MAXHEALTH constant). Note that the pygame.display.update() function is not called in drawHealthMeter().

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