agb 0.23.1

Library for Game Boy Advance Development
Documentation 
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use crate::memory_mapped::MemoryMapped2DArray;

use super::{DISPLAY_CONTROL, HEIGHT, WIDTH, tiled::DisplayControlRegister};
use bilge::prelude::*;

use core::marker::PhantomData;

const BITMAP_MODE_3: MemoryMapped2DArray<u16, { WIDTH as usize }, { HEIGHT as usize }> =
    unsafe { MemoryMapped2DArray::new(0x600_0000) };

#[non_exhaustive]
pub(crate) struct Bitmap3<'gba> {
    phantom: PhantomData<&'gba ()>,
}

impl Bitmap3<'_> {
    pub(crate) unsafe fn new() -> Self {
        let mut current_graphics = DisplayControlRegister::default();
        current_graphics.set_video_mode(u3::new(3));
        current_graphics.set_enabled_backgrounds(u4::new(1u8 << 2));

        DISPLAY_CONTROL.set(current_graphics);

        Bitmap3 {
            phantom: PhantomData,
        }
    }

    /// Draws point to screen at (x, y) coordinates with colour and panics if
    /// (x, y) is out of the bounds of the screen.
    pub fn draw_point(&mut self, x: i32, y: i32, colour: u16) {
        let x = x.try_into().unwrap();
        let y = y.try_into().unwrap();
        BITMAP_MODE_3.set(x, y, colour);
    }

    pub fn clear(&mut self, colour: u16) {
        for y in 0..(HEIGHT as usize) {
            for x in 0..(WIDTH as usize) {
                BITMAP_MODE_3.set(x, y, colour);
            }
        }
    }
}