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This commit is contained in:
Lokathor 2022-12-09 15:30:01 -07:00
parent c1d5a52172
commit 7a036ed05e
1 changed files with 26 additions and 5 deletions
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31
examples/game.rs
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@ -1,6 +1,8 @@
#![no_std] #![no_std]
#![no_main] #![no_main]
use core::num::Wrapping;
use gba::prelude::*; use gba::prelude::*;
#[panic_handler] #[panic_handler]
@ -28,20 +30,39 @@ extern "C" fn main() -> ! {
let no_display = ObjAttr0::new().with_style(ObjDisplayStyle::NotDisplayed); let no_display = ObjAttr0::new().with_style(ObjDisplayStyle::NotDisplayed);
OBJ_ATTR0.iter().for_each(|va| va.write(no_display)); OBJ_ATTR0.iter().for_each(|va| va.write(no_display));
let mut x = Wrapping(13);
let mut y = Wrapping(37);
let mut obj = ObjAttr::new(); let mut obj = ObjAttr::new();
obj.set_x(13); obj.set_x(x.0);
obj.set_y(37); obj.set_y(y.0);
obj.set_tile_id(1); obj.set_tile_id(1);
OBJ_ATTR_ALL.index(0).write(obj); OBJ_ATTR_ALL.index(0).write(obj);
DISPCNT.write(DisplayControl::new().with_show_obj(true)); DISPCNT.write(DisplayControl::new().with_show_obj(true));
loop { loop {
// wait for vblank
VBlankIntrWait(); VBlankIntrWait();
// update graphics
OBJ_ATTR_ALL.index(0).write(obj);
// get input and prepare next frame
let keys = KEYINPUT.read(); let keys = KEYINPUT.read();
if keys.a() { if keys.up() {
let t = TIMER0_COUNT.read(); y -= 1;
BACKDROP_COLOR.write(Color(t));
} }
if keys.down() {
y += 1;
}
if keys.left() {
x -= 1;
}
if keys.right() {
x += 1;
}
obj.set_x(x.0);
obj.set_y(y.0);
} }
} }