python/pyxel/examples/04_sound_api.py

import pyxel


class App:
    def __init__(self):
        pyxel.init(200, 150, title="Pyxel Sound API")

        pyxel.images[0].set(
            0,
            0,
            [
                "00011000",
                "00010100",
                "00010010",
                "00010010",
                "00010100",
                "00010000",
                "01110000",
                "01100000",
            ],
        )

        pyxel.sounds[0].set(
            "e2e2c2g1 g1g1c2e2 d2d2d2g2 g2g2rr c2c2a1e1 e1e1a1c2 b1b1b1e2 e2e2rr",
            "p",
            "6",
            "vffn fnff vffs vfnn",
            25,
        )
        pyxel.sounds[1].set(
            "r a1b1c2 b1b1c2d2 g2g2g2g2 c2c2d2e2 f2f2f2e2 f2e2d2c2 d2d2d2d2 g2g2r r ",
            "s",
            "6",
            "nnff vfff vvvv vfff svff vfff vvvv svnn",
            25,
        )
        pyxel.sounds[2].set(
            "c1g1c1g1 c1g1c1g1 b0g1b0g1 b0g1b0g1 a0e1a0e1 a0e1a0e1 g0d1g0d1 g0d1g0d1",
            "t",
            "7",
            "n",
            25,
        )
        pyxel.sounds[3].set(
            "f0c1f0c1 g0d1g0d1 c1g1c1g1 a0e1a0e1 f0c1f0c1 f0c1f0c1 g0d1g0d1 g0d1g0d1",
            "t",
            "7",
            "n",
            25,
        )
        pyxel.sounds[4].set(
            "f0ra4r f0ra4r f0ra4r f0f0a4r", "n", "6622 6622 6622 6422", "f", 25
        )

        self.play_music(True, True, True)
        pyxel.run(self.update, self.draw)

    def play_music(self, ch0, ch1, ch2):
        if ch0:
            pyxel.play(0, [0, 1], loop=True)
        else:
            pyxel.stop(0)

        if ch1:
            pyxel.play(1, [2, 3], loop=True)
        else:
            pyxel.stop(1)

        if ch2:
            pyxel.play(2, 4, loop=True)
        else:
            pyxel.stop(2)

    def update(self):
        if pyxel.btnp(pyxel.KEY_Q):
            pyxel.quit()

        if pyxel.btnp(pyxel.KEY_1):
            self.play_music(True, True, True)
        if pyxel.btnp(pyxel.KEY_2):
            self.play_music(True, False, False)
        if pyxel.btnp(pyxel.KEY_3):
            self.play_music(False, True, False)
        if pyxel.btnp(pyxel.KEY_4):
            self.play_music(False, False, True)
        if pyxel.btnp(pyxel.KEY_5):
            self.play_music(False, False, False)

    def draw(self):
        pyxel.cls(1)

        pyxel.text(6, 6, "sounds[snd].set(note,tone,volume,effect,speed)", 7)
        pyxel.rect(12, 14, 177, 35, 2)
        pyxel.text(16, 17, "note  :[CDEFGAB] + [ #-] + [0-4] or [R]", 9)
        pyxel.text(16, 25, "tone  :[T]riangle [S]quare [P]ulse [N]oise", 9)
        pyxel.text(16, 33, "volume:[0-7]", 9)
        pyxel.text(16, 41, "effect:[N]one [S]lide [V]ibrato [F]adeOut", 9)

        pyxel.text(6, 53, "musics[msc].set(seq0,seq1,seq2,...)", 7)
        pyxel.text(6, 62, "play(ch,snd,[loop],[resume])", 7)
        pyxel.text(6, 71, "playm(msc,[loop])", 7)
        pyxel.text(6, 80, "stop([ch])", 7)

        pyxel.rectb(6, 97, 188, 47, 14)
        pyxel.rect(6, 91, 29, 7, 14)
        pyxel.text(7, 92, "CONTROL", 1)

        pyxel.text(12, 102, "1: Play all channels", 14)
        pyxel.text(12, 110, "2: Play channel #0 (Melody)", 14)
        pyxel.text(12, 118, "3: Play channel #1 (Bass)", 14)
        pyxel.text(12, 126, "4: Play channel #2 (Drums)", 14)
        pyxel.text(12, 134, "5: Stop playing", 14)

        pyxel.text(137, 107, "play_pos(ch)", 15)

        for i in range(3):
            x = 140 + i * 16
            y = 123 + pyxel.sin(pyxel.frame_count * 5.73 + i * 120.3) * 5
            col = 15 if pyxel.play_pos(i) else 13
            pyxel.pal(1, col)
            pyxel.blt(x, y, 0, 0, 0, 8, 8, 0)

        pyxel.pal()


App()