import "env.memory" memory(4);
import "env.pow" fn pow(f32, f32) -> f32;
import "env.sin" fn sin(f32) -> f32;
import "env.cls" fn cls(i32);
import "env.rectangle" fn rectangle(f32, f32, f32, f32, i32);

include "../platform/src/ges.cwa"

export fn snd(t: i32) -> f32 {
    gesSnd(t)
}

export fn upd() {
    80?0 = 32!32 / 200 & 2 | 0x41;
    80?3 = (32!32 / 400)%7*12/7 + 40;
    let pulse = (32!32 * 256 / 2000) & 511;
    if pulse >= 256 {
        pulse = 511 - pulse;
    }
    80?1 = pulse;

    cls(0);
    rectangle(0.0, 100.0, (pulse * 320 / 256) as f32, 16.0, 15);
}

data 80 {
    i8(
        0x41, 0, 0, 80, 0x70, 0
    )
}