ed/pikuma_ps1
1
0
Fork 0
mirror of https://github.com/Ed94/pikuma_ps1.git synced 2026-08-14 11:38:14 +00:00
Code Issues Packages Projects Releases Wiki Activity

converted pad input for cam to mips atom

Browse Source
This commit is contained in:
ed
2026-08-08 18:23:28 -04:00
parent 68b87f1c8b
commit b045856dd6
3 changed files with 87 additions and 26 deletions
Download Patch File Download Diff File Expand all files Collapse all files
code/hello_camera/hello_camera.atom.c
+48 -6
View File
@@ -313,15 +313,57 @@ atom_label(exit_stick)
};
enum {
R_Cam = R_T4 atom_reg,
R_Cam = R_T4 atom_reg,
R_CamPadState = R_T5 atom_reg,
};
typedef Struct_(Binds_PadInputCam) {
Camera* cam;
PadState* state;
Camera* cam;
};
internal MipsAtom_(pad_input_cam) atom_info(atom_bind(Binds_PadInputCam)) {
load_word(R_Cam, R_TapePtr, O_(Binds_PadInputCam,cam)),
add_ui_self( R_TapePtr, S_(Binds_PadInputCam)),
// TODO(Ed): Implement.
internal MipsAtom_(pad_input_cam) atom_info(atom_bind(Binds_PadInputCam)
, atom_reads( R_Cam, R_CamPadState, R_TapePtr)
, atom_writes(R_Cam)
) {
/* Bind pop: state → R_CamPadState (R_T5), cam → R_Cam (R_T4), advance R_TapePtr by 8. */
load_word(R_CamPadState, R_TapePtr, O_(Binds_PadInputCam,state)),
load_word(R_Cam, R_TapePtr, O_(Binds_PadInputCam,cam)),
add_ui_self( R_TapePtr, S_(Binds_PadInputCam)),
/* Load pad[0].buttons into R_T0; nop fills the load-delay slot. */
load_word(R_T0, R_CamPadState, O_(PadState,buttons)),
load_word(R_T1, R_Cam, O_(Camera,pos.x)), // BD-Slot.
// D-pad Left → cam.pos.x -= 50. and_i fulfills BD-slot for load on R_Cam.
and_i(R_T3, R_T0, Pad_Left), branch_le_zero(R_T3, atom_offset(left_x, exit_left_x)), nop,
add_si(R_T1, R_T1, -50), store_word(R_T1, R_Cam, O_(Camera,pos.x)),
atom_label(exit_left_x)
/* D-pad Right → cam.pos.x += 50. Reuses R_T1 from Left. */
and_i(R_T3, R_T0, Pad_Right), branch_le_zero(R_T3, atom_offset(right_x, exit_right_x)), nop,
add_si(R_T1, R_T1, 50), store_word(R_T1, R_Cam, O_(Camera,pos.x)),
atom_label(exit_right_x)
/* D-pad Up → cam.pos.y -= 50. Load pos.y BEFORE the andi. */
load_word(R_T1, R_Cam, O_(Camera,pos.y)),
and_i(R_T3, R_T0, Pad_Up), branch_le_zero(R_T3, atom_offset(up_y, exit_up_y)), nop,
add_si(R_T1, R_T1, -50), store_word(R_T1, R_Cam, O_(Camera,pos.y)),
atom_label(exit_up_y)
/* D-pad Down → cam.pos.y += 50. Reuses R_T1 from Up. */
and_i(R_T3, R_T0, Pad_Down), branch_le_zero(R_T3, atom_offset(down_y, exit_down_y)), nop,
add_si(R_T1, R_T1, 50), store_word(R_T1, R_Cam, O_(Camera,pos.y)),
atom_label(exit_down_y)
/* D-pad Cross → cam.pos.z -= 50. Load pos.z BEFORE the andi. */
load_word(R_T1, R_Cam, O_(Camera,pos.z)),
and_i(R_T3, R_T0, Pad_Cross), branch_le_zero(R_T3, atom_offset(cross_z, exit_cross_z)), nop,
add_si(R_T1, R_T1, -50), store_word(R_T1, R_Cam, O_(Camera,pos.z)),
atom_label(exit_cross_z)
/* D-pad Circle → cam.pos.z += 50. Reuses R_T1 from Cross. */
and_i(R_T3, R_T0, Pad_Circle), branch_le_zero(R_T3, atom_offset(circle_z, exit_circle_z)), nop,
add_si(R_T1, R_T1, 50), store_word(R_T1, R_Cam, O_(Camera,pos.z)),
atom_label(exit_circle_z)
mac_yield(),
};