tetris.cpp

/*

MIT License

Copyright (c) 2022 PCSX-Redux authors

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.

*/

#include "tetris.hh"

extern "C" {
#include "modplayer/modplayer.h"
}

extern const struct MODFileFormat _binary_musix_oh_amiga_with_effects_hit_start;

// Our global application object. This is the only global
// object in this whole example. It will hold all of the
// other necessary classes.
Tetris g_tetris;

// Our main function. The only thing to do is to call `run` on
// our Application object.
int main() { return g_tetris.run(); }

// The `prepare` method will be called exactly once, and is
// where we are supposed to initialize all of our objects.
// Luckily, most have pretty straightforward constructors,
// so we can rely on just that. The only thing we are going to
// initialize is the GPU and the SPU. This is the only hardware
// that is allowed to be initialized by the `prepare` method
// at this time.
void Tetris::prepare() {
    psyqo::GPU::Configuration config;
    config.set(psyqo::GPU::Resolution::W320)
        .set(psyqo::GPU::VideoMode::AUTO)
        .set(psyqo::GPU::ColorMode::C15BITS)
        .set(psyqo::GPU::Interlace::PROGRESSIVE);
    gpu().initialize(config);

    // All of the music is done here, really.
    // This may change later, as the mod player is still a piece of C code
    // that needs to be updated.

    // First, initialize the mod player.
    MOD_Load(&_binary_musix_oh_amiga_with_effects_hit_start);
    // Then, create a timer that will play the music.
    // The internals of the MOD player will give us the number of hblanks
    // to wait, so we need to convert that to microseconds.
    m_musicTimer = gpu().armPeriodicTimer(MOD_hblanks * psyqo::GPU::US_PER_HBLANK, [this](uint32_t) {
        MOD_Poll();
        // There is no downside in changing the timer every time, in case the
        // mod player wants to change the timing.
        gpu().changeTimerPeriod(m_musicTimer, MOD_hblanks * psyqo::GPU::US_PER_HBLANK);
    });
}

// The `createScene` method is called every time the root scene needs
// to be created. This is also where we have a chance to initialize
// the rest of our hardware. We don't want to initialize the hardware
// multiple times however, so we keep track of the fact that we've
// initialized before through the `m_initialized` boolean.
// The game over screen will pop all the scenes, so we will get
// this method called multiple times.
void Tetris::createScene() {
    if (!m_initialized) {
        m_font.uploadSystemFont(gpu());
        m_input.initialize();
        m_initialized = true;
    }
    // Our root scene is the splash screen. We'll push it
    // unconditionally.
    pushScene(&m_splash);
}

void Tetris::renderTetrisLogo() {
    auto& font = m_font;

    // All these are going to be blocking calls.
    font.print(gpu(), "T", {{.x = 17 * 8, .y = 5 * 16}}, RED);
    font.print(gpu(), "E", {{.x = 18 * 8, .y = 5 * 16}}, ORANGE);
    font.print(gpu(), "T", {{.x = 19 * 8, .y = 5 * 16}}, YELLOW);
    font.print(gpu(), "R", {{.x = 20 * 8, .y = 5 * 16}}, GREEN);
    font.print(gpu(), "I", {{.x = 21 * 8, .y = 5 * 16}}, CYAN);
    font.print(gpu(), "S", {{.x = 22 * 8, .y = 5 * 16}}, PURPLE);

    font.print(gpu(), "T", {{.x = 17 * 8 - 1, .y = 5 * 16 - 1}}, HIRED);
    font.print(gpu(), "E", {{.x = 18 * 8 - 1, .y = 5 * 16 - 1}}, HIORANGE);
    font.print(gpu(), "T", {{.x = 19 * 8 - 1, .y = 5 * 16 - 1}}, HIYELLOW);
    font.print(gpu(), "R", {{.x = 20 * 8 - 1, .y = 5 * 16 - 1}}, HIGREEN);
    font.print(gpu(), "I", {{.x = 21 * 8 - 1, .y = 5 * 16 - 1}}, HICYAN);
    font.print(gpu(), "S", {{.x = 22 * 8 - 1, .y = 5 * 16 - 1}}, HIPURPLE);
}

psyqo::Color Tetris::getBlink(unsigned scale) {
    psyqo::Color c;
    // This `time` variable will contain a number of seconds since
    // the application was started, scaled to the specified value,
    // so that we can use it to make the blinking effect.
    uint32_t time = scale * gpu().getFrameCount() / gpu().getRefreshRate();
    if ((time & 1) == 0) {
        c = WHITE;
    } else {
        c = GREY;
    }
    return c;
}