# Sternenfänger
# Links/Rechts bewegen, Sterne sammeln, Meteoriten vermeiden.
# Nach Game Over mit START/X neu starten.

initWindow(720, 480)

function box(x, y, w, h, c)
    for ax = 0 to w - 1
        for ay = 0 to h - 1
            setPixel(x + ax, y + ay, c)
        end
    end
end

function star(x, y, c)
    setPixel(x + 2, y, c)
    setPixel(x + 2, y + 1, c)
    setPixel(x, y + 2, c)
    setPixel(x + 1, y + 2, c)
    setPixel(x + 2, y + 2, c)
    setPixel(x + 3, y + 2, c)
    setPixel(x + 4, y + 2, c)
    setPixel(x + 2, y + 3, c)
    setPixel(x + 2, y + 4, c)
end

function rock(x, y, c)
    box(x + 1, y, 4, 1, c)
    box(x, y + 1, 6, 4, c)
    box(x + 1, y + 5, 4, 1, c)
end

function ship(x, y, c)
    box(x + 7, y, 4, 2, c)
    box(x + 4, y + 2, 10, 2, c)
    box(x, y + 4, 18, 3, c)
    setPixel(x + 2, y + 7, c)
    setPixel(x + 15, y + 7, c)
end

bg = color(0, 0, 4)
white = color(31, 31, 31)
yellow = color(31, 31, 0)
red = color(31, 5, 0)
cyan = color(0, 31, 31)
green = color(0, 31, 8)

playerX = 111
playerY = 148

starX = random(4, 235)
starY = 0

rockX = random(4, 235)
rockY = 0

score = 0
lives = 3
speed = 1
nextLevel = 5
gameOver = 0

while !shouldClose()
    nextFrame()
    clearWindow(bg)

    if gameOver == 0
        if isButtonDown(BT_LEFT)
            playerX = playerX - 2
        end

        if isButtonDown(BT_RIGHT)
            playerX = playerX + 2
        end

        if playerX < 0
            playerX = 0
        end

        if playerX > 222
            playerX = 222
        end

        starY = starY + speed
        rockY = rockY + speed + 1

        hitStar = 0
        if starY >= playerY - 5
            if starY <= playerY + 8
                if starX >= playerX
                    if starX <= playerX + 18
                        hitStar = 1
                    end
                end
            end
        end

        if hitStar == 1
            score = score + 1
            starX = random(4, 235)
            starY = 0
        end

        if starY > 159
            starX = random(4, 235)
            starY = 0
        end

        hitRock = 0
        if rockY >= playerY - 6
            if rockY <= playerY + 8
                if rockX + 6 >= playerX
                    if rockX <= playerX + 18
                        hitRock = 1
                    end
                end
            end
        end

        if hitRock == 1
            lives = lives - 1
            rockX = random(4, 235)
            rockY = 0
        end

        if rockY > 159
            rockX = random(4, 235)
            rockY = 0
        end

        if score >= nextLevel
            speed = speed + 1
            nextLevel = nextLevel + 5
        end

        if lives <= 0
            gameOver = 1
        end

        render(0, 0, white, "Score: ", score)
        render(96, 0, white, "Lives: ", lives)
        render(176, 0, white, "Speed: ", speed)

        star(starX, starY, yellow)
        rock(rockX, rockY, red)
        ship(playerX, playerY, cyan)
    end

    if gameOver != 0
        render(64, 48, red, "GAME OVER")
        render(48, 68, white, "Score: ", score)
        render(24, 96, green, "Press START / X")

        if getButtonDownTime(BT_START) == 1
            playerX = 111
            starX = random(4, 235)
            starY = 0
            rockX = random(4, 235)
            rockY = 0
            score = 0
            lives = 3
            speed = 1
            nextLevel = 5
            gameOver = 0
        end
    end
end

printLine("stop")