def call_display_hud_patch(
patch_addresses: StringDisplayPatchAddresses) -> List[BaseInstruction]:
# r31 = CStateManager
return [
# setup CHUDMemoParms
lis(r5, 0x4100), # 8.0f
li(r6, 0x0),
li(r7, 0x1),
li(r9, 0x9),
stw(r5, 0x10, r1), # display time (seconds)
stb(r7, 0x14, r1), # clear memo window
stb(r6, 0x15, r1), # fade out only
stb(r6, 0x16, r1), # hint memo
stb(r7, 0x17, r1), # fade in text
stw(r9, 0x18, r1), # unk
# setup wstring
addi(r3, r1, 0x1C),
custom_ppc.load_unsigned_32bit(
r4, patch_addresses.message_receiver_string_ref),
bl(patch_addresses.wstring_constructor),
# r4 = CHUDMemoParms
addi(r4, r1, 0x10),
bl(patch_addresses.display_hud_memo),
]
def set_artifact_layer_active_patch(addresses: Prime1DolVersion, layer_id: int, active: bool,
) -> List[assembler.BaseInstruction]:
# g_GameState->StateForWorld(0x39F2DE28)->GetLayerState()->SetLayerActive(templeAreaIndex, artifactLayer, true)
result = []
for_another_world = [
# Get the LayerState via the CGameState
lwz(r3, addresses.game_state_pointer - addresses.sda13_base, r13), # get g_GameState
# r4 already have the asset id
bl(addresses.state_for_world), # CGameState::StateForWorld
lwz(r3, 0x14, r3), # worldState->layerState
]
result.extend([
# Get the LayerState of current world. We'll overwrite if it's another world, it's just 1 instruction bigger
lwz(r3, 0x8c8, r31), # mgr->worldLayerState
# Tallon Overworld asset id
custom_ppc.load_unsigned_32bit(r4, 0x39f2de28),
# Load current asset id in r5
lwz(r5, 0x850, r31), # mgr->world
lwz(r5, 0x8, r5), # world->mlvlId
cmpw(0, r4, r5), # compare asset ids
beq(4 + assembler.byte_count(for_another_world), relative=True),
*for_another_world,
lwz(r3, 0x0, r3),
# Set layer
li(r4, 16), # Artifact Layer
stw(r4, 0x10, r1),
# Set layer
li(r5, layer_id), # Artifact Layer
stw(r5, 0x14, r1),
# Make the layer change via SetLayerActive
addi(r4, r1, 0x10),
addi(r5, r1, 0x14),
li(r6, int(active)),
bl(addresses.set_layer_active), # CWorldLayerState::SetLayerActive
])
return result
def test_load_unsigned_32bit_invalid(value):
with pytest.raises(AssertionError):
custom_ppc.load_unsigned_32bit(ppc.r1, value)
def test_load_unsigned_32bit_valid(value, expected):
codes = list(
custom_ppc.load_unsigned_32bit(ppc.r1, value).bytes_for(0, symbols={}))
assert bytes(codes) == expected
def _is_out_of_ammo_patch(symbols: Dict[str, int],
ammo_types: List[Tuple[int, int]]):
def get_beam_ammo_amount(index: int):
label = f"_after_get_ammo_type_{index}"
body = [
lwz(r5, 0x774, r30), # r5 = get current beam
addi(r5, r5, 0x1), # current_beam += 1
mtspr(CTR, r5), # count_register = current_beam
]
for beam_index, beam_ammo_types in enumerate(ammo_types):
instructions = []
if beam_index + 1 < len(ammo_types):
instructions.append(
bdnz(f"_before_get_ammo_type_{beam_index + 1}_{index}"))
if beam_ammo_types[index] == -1:
instructions.extend([
li(r3, 0), # No ammo type, so load result
b("_end"), # and return
])
else:
instructions.extend([
li(r4, beam_ammo_types[index]),
b(label),
])
instructions[0].with_label(
f"_before_get_ammo_type_{beam_index}_{index}")
body.extend(instructions)
body.extend([
or_(r3, r31, r31).with_label(
label), # arg1 = playerState, arg2 is already there
li(r5, 1), # arg3 = true, allow multiplayer ammo stuff
bl("CPlayerState::GetItemAmount"), # r3 = ammoCount
])
return body
get_uncharged_cost = [
custom_ppc.load_unsigned_32bit(r4,
symbols["BeamIdToChargedShotAmmoCost"]),
lwz(r5, 0x774, r30), # r5 = get current beam
rlwinm(r5, r5, 0x2, 0x0, 0x1d), # r5 *= 4
lwzx(r4, r4, r5), # ammoCost_r4 = UnchargedCosts_r4[currentBeam]
]
compare_count_to_cost = [
cmpw(0, r3, r4),
bge(3 * 4, relative=True), # if ammoCount_3 >= ammoCost_r4, goto
li(r3, 1), # Not enough ammo, load true
b("_end"), # and return
]
return [
# Save stack
stwu(r1, -0x10, r1),
mfspr(r0, LR),
stw(r0, 0x14, r1),
# Save r31 and r30
stw(r31, 0xc, r1),
stw(r30, 0x8, r1),
# Save a pointer to CPlayerGun
or_(r30, r3, r3),
bl("CPlayerGun::GetPlayer"),
# Get and save a pointer to CPlayerState
lwz(r31, 0x1314, r3),
# check ammo type 1
*get_beam_ammo_amount(0), # r3 = ammo amount
*get_uncharged_cost, # r4 = uncharged_cost
*compare_count_to_cost,
# check ammo type 2
*get_beam_ammo_amount(1), # r3 = ammo amount
*get_uncharged_cost, # r4 = uncharged_cost
*compare_count_to_cost,
# All ammo types for this beam are fine!
li(r3, 0),
b("_end"), # and return
# end
lwz(r0, 0x14, r1).with_label("_end"),
lwz(r31, 0xc, r1),
lwz(r30, 0x8, r1),
mtspr(LR, r0),
addi(r1, r1, 0x10),
blr(),
]