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#include <agbx/key.h>
#include <agbx/gfx.h>
agbx_err agbx_main(void) {
agbx_set10(0x500'0000u,0x0u);
agbx_set10(0x500'0002u,0x19u);
agbx_set10(0x500'0004u,0xFFFFu);
agbx_set10(0x400'0000u,0x404u);
agbx_clrscrn4(0x600'0000u,0x0u);
agbx_clrscrn4(0x600'A000u,0x0u);
agbx_i10 const cols[] = {
0b11111u,
0b1111100000u,
0b111110000000000u,
};
agbx_i8 col = 0x0u;
struct {
agbx_i8 x;
agbx_i8 y;
} pos = {.x = 0x0u,.y = 0x0u,};
agbx_setpx1(0x600'0000u,0x0u,0x2u);
agbx_i20 vaddr = 0x600'0000u;
for (;;) {
agbx_vsync();
agbx_keymap const keymap = agbx_getkeymap();
if (agbx_chkkey(keymap,agbx_key_b)) {
return (agbx_err)(((agbx_i10)pos.x + (agbx_i10)pos.y)/0x2u);
}
if (agbx_chkkey(keymap,agbx_key_a)) {
return agbx_err_ok;
}
if (agbx_chkkey(keymap,agbx_key_l)) {
agbx_plot4(vaddr,pos.x,pos.y,0x1u);
vaddr = agbx_flip();
agbx_plot4(vaddr,pos.x,pos.y,0x2u);
while (agbx_chkkey(agbx_getkeymap(),agbx_key_l)) {}
continue;
}
if (agbx_chkkey(keymap,agbx_key_r)) {
if (col == 0x2u) {col = 0x0u;}
else {++col;}
agbx_set10(0x500'0002u,cols[col]);
while (agbx_chkkey(agbx_getkeymap(),agbx_key_r)) {}
continue;
}
typeof (pos) const prevpos = pos;
agbx_key key = agbx_key_pade;
if (agbx_chkkey(keymap,key)) {
if (pos.x != 0xEFu) {
++pos.x;
goto drw;
}
}
key = agbx_key_padn;
if (agbx_chkkey(keymap,key)) {
if (pos.y != 0x0u) {
--pos.y;
goto drw;
}
}
key = agbx_key_pads;
if (agbx_chkkey(keymap,key)) {
if (pos.y != 0x9Fu) {
++pos.y;
goto drw;
}
}
key = agbx_key_padw;
if (agbx_chkkey(keymap,key)) {
if (pos.x != 0x0u) {
--pos.x;
goto drw;
}
}
continue;
drw:;
agbx_plot4(vaddr,prevpos.x,prevpos.y,0x1u);
agbx_plot4(vaddr,pos.x,pos.y,0x2u);
while (agbx_chkkey(agbx_getkeymap(),key)) {}
}
}
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