LodeRunner_SplashScreen.ino

#include "src/utils/Arduboy2Ext.h"

static constexpr uint8_t ppotFrames = (1.6 *25); // 1.6s animation loop

// ----------------------------------------------------------------------------
//  Initialise state ..
//
void splashScreen_Init() {

    gameState = GameState::SplashScreen;

}


// ----------------------------------------------------------------------------
//  Handle state updates .. 
//
void splashScreen() { 

    if (arduboy.justPressed(A_BUTTON) || arduboy.justPressed(B_BUTTON)) {
        
        gameState = GameState::Intro; 

    }


    Sprites::drawOverwrite(32, 16, PPOT, 0);

    uint8_t p = 0x11; // Default pixel position 0 is hidden in the image

    switch (arduboy.frameCount % ppotFrames) {

        // 2nd quarter of frames
        case (ppotFrames*1/4) ... (ppotFrames*2/4)-1:
            p = 0x31; // Move pixel down to position 1
            /*-fallthrough*/

        // 1st quarter of frames
        case 0 ... (ppotFrames*1/4)-1:
            // Flash 'Play' arrow by clearing the image
            // Overwrite using filled rectangle
            arduboy.fillRect(91, 24, 5, 7, BLACK);
            break;

        // 3rd quarter of frames
        case (ppotFrames*2/4) ... (ppotFrames*3/4)-1:
            p = 0x51; // Move pixel down to position 2
            break;

        // 4th quarter of frames
        default:
            p = 0x91; // Move pixel down to position 3
            break;

    }

    // Draw pixel to represent the tape spooling
    // Render directly to the screen buffer
    arduboy.sBuffer[52 +(3*WIDTH)] = p; // Values 0x11, 0x31, 0x51, 0x91

    // On even steps of pixel movement, update the spindle image
    if ((p & 0xA0) == 0) {
        // Render directly to the screen buffer 
        arduboy.sBuffer[45 +(3*WIDTH)] = 0xA5;
        arduboy.sBuffer[46 +(3*WIDTH)] = 0x95;
    }

}