# Amiga (Bebbo m68k-amigaos-gcc) build rules.

include $(dir $(lastword $(MAKEFILE_LIST)))/common.mk

$(call requireTool,$(AMIGA_CC),toolchain:amiga)
$(call requireTool,$(AMIGA_AS),toolchain:amiga)
$(call requireTool,$(AMIGA_PTPLAYER)/ptplayer.asm,toolchain:amiga)

PLATFORM := amiga
BUILD    := $(REPO_DIR)/build/$(PLATFORM)
LIBDIR   := $(BUILD)/lib
BINDIR   := $(BUILD)/bin

# PTPlayer is installed by ./install.sh (AMIGA_PTPLAYER); we
# reference its ptplayer.asm + header from there rather than copying
# them into the source tree, so the installer can refresh / version it
# independently. -I on $(SRC_DIR)/amiga lets ptplayer.h resolve
# <SDI_compiler.h> from the machine-local shim alongside our code.
PTPLAYER_DIR := $(AMIGA_PTPLAYER)
CFLAGS  := $(COMMON_CFLAGS) -m68000 -fomit-frame-pointer -noixemul -D__OSCOMPAT -I$(SRC_DIR)/amiga -I$(SRC_68K) -I$(PTPLAYER_DIR) -MMD -MP
# OSCOMPAT=1 selects PTPlayer's audio.device-friendly variant (uses
# CIA-B + audio.device interrupts via the OS rather than taking over
# Paula directly), matching the way our HAL cooperates with Intuition.
# vasm is only invoked for ptplayer.asm here -- Frank Wille's source
# is written in Devpac/vasm syntax and there is no maintained GAS-
# syntax port. JoeyLib's own .s files are GAS syntax and assembled by
# the bundled m68k-amigaos-as via the gcc driver.
# -Fhunk matches Bebbo gcc-amigaos's AmigaOS HUNK object format. ELF
# objects from vasm cannot be linked into a HUNK libjoey.a (the ar
# "file format not recognized" failure mode is silent at archive time
# and surfaces as undefined references at every binary's link step).
PTPLAYER_ASFLAGS := -Fhunk -m68000 -quiet -DOSCOMPAT=1
# --allow-multiple-definition lets our user-space tzset stub
# (src/amiga/libinit.c) win over libnix's version in
# __gmtoffset.o. libnix's tzset dereferences a possibly-NULL
# LocaleBase; our no-op skips the deref.
LDFLAGS := -noixemul -Wl,--allow-multiple-definition

PORT_C_SRCS := $(wildcard $(SRC_DIR)/amiga/*.c)
PORT_S_SRCS := $(wildcard $(SRC_DIR)/amiga/*.s)
SHARED_S    := $(wildcard $(SRC_68K)/*.s)

# Amiga uses PTPlayer's mt_playfx for SFX, not the libxmp+overlay
# combo that DOS and ST share, so the shared SFX overlay mixer in
# src/core/audioSfxMix.c is unused here. Filter it out to keep dead
# code out of every Amiga binary.
CORE_C_SRCS_AMIGA := $(filter-out %/audioSfxMix.c, $(CORE_C_SRCS))

# Sprite codegen: the Amiga-planar emitter (spriteEmitPlanar68k.c) lives in
# src/m68k/ and builds into obj/68k/; only the CPU-independent dispatch stays
# in src/codegen.
CODEGEN_DIR := $(REPO_DIR)/src/codegen

LIB_OBJS := \
    $(patsubst $(SRC_CORE)/%.c,$(BUILD)/obj/core/%.o,$(CORE_C_SRCS_AMIGA)) \
    $(patsubst $(SRC_DIR)/generic/%.c,$(BUILD)/obj/generic/%.o,$(GENERIC_C_SRCS)) \
    $(patsubst $(SRC_DIR)/amiga/%.c,$(BUILD)/obj/port/%.o,$(PORT_C_SRCS)) \
    $(patsubst $(SRC_DIR)/amiga/%.s,$(BUILD)/obj/port/%.o,$(PORT_S_SRCS)) \
    $(patsubst $(SRC_68K)/%.s,$(BUILD)/obj/68k/%.o,$(SHARED_S)) \
    $(BUILD)/obj/port/ptplayer.o \
    $(BUILD)/obj/68k/spriteEmitPlanar68k.o \
    $(BUILD)/obj/codegen/spriteCompile.o \
    $(BUILD)/obj/codegen/spriteStage.o

LIB := $(LIBDIR)/libjoey.a

HELLO_SRC    := $(EXAMPLES)/hello/hello.c
HELLO_BIN    := $(BINDIR)/Hello
PATTERN_SRC  := $(EXAMPLES)/pattern/pattern.c
PATTERN_BIN  := $(BINDIR)/Pattern
DRAW_SRC     := $(EXAMPLES)/draw/draw.c
DRAW_BIN     := $(BINDIR)/Draw
KEYS_SRC     := $(EXAMPLES)/keys/keys.c
KEYS_BIN     := $(BINDIR)/Keys
SERIAL_SRC   := $(EXAMPLES)/serial/serial.c
SERIAL_BIN   := $(BINDIR)/Serial
SERTEST_SRC  := $(EXAMPLES)/sertest/sertest.c
SERTEST_BIN  := $(BINDIR)/SerTest
SAVE_SRC     := $(EXAMPLES)/save/save.c
SAVE_BIN     := $(BINDIR)/Save
TILEBANK_SRC := $(EXAMPLES)/tilebank/tilebank.c
TILEBANK_BIN := $(BINDIR)/TileBank
JOY_SRC      := $(EXAMPLES)/joy/joy.c
JOY_BIN      := $(BINDIR)/Joy
SPRITE_SRC   := $(EXAMPLES)/sprite/sprite.c
SPRITE_BIN   := $(BINDIR)/Sprite
AUDIO_SRC    := $(EXAMPLES)/audio/audio.c
AUDIO_BIN    := $(BINDIR)/Audio
UBER_SRC     := $(EXAMPLES)/uber/uber.c
UBER_BIN     := $(BINDIR)/Uber
ADV_SRC      := $(EXAMPLES)/adventure/adventure.c
ADV_BIN      := $(BINDIR)/Adv
ADV2_SRC     := $(EXAMPLES)/adventure2/adventure2.c
ADV2_BIN     := $(BINDIR)/Adv2
AGI_SRCS     := $(EXAMPLES)/agi/agi.c $(EXAMPLES)/agi/agiRes.c $(EXAMPLES)/agi/agiPic.c $(EXAMPLES)/agi/agiView.c $(EXAMPLES)/agi/agiVm.c $(EXAMPLES)/agi/agiObj.c $(EXAMPLES)/agi/agiText.c
AGI_BIN      := $(BINDIR)/Agi
STAXI_SRCS     := $(EXAMPLES)/spacetaxi/spacetaxi.c $(EXAMPLES)/spacetaxi/stLevel.c $(EXAMPLES)/spacetaxi/stLevelFile.c $(EXAMPLES)/spacetaxi/stRender.c $(EXAMPLES)/spacetaxi/stSim.c $(EXAMPLES)/spacetaxi/stFare.c $(EXAMPLES)/spacetaxi/stHooks.c $(EXAMPLES)/spacetaxi/stTitle.c $(EXAMPLES)/spacetaxi/stC64Data.c $(EXAMPLES)/spacetaxi/stCels.c $(EXAMPLES)/spacetaxi/stAudio.c $(EXAMPLES)/spacetaxi/stLevelCels.c
STAXI_INSTALL_DIR := $(BINDIR)/Taxi
STAXI_BIN      := $(STAXI_INSTALL_DIR)/Taxi

# Space Taxi asset staging: same pattern as the DOS port -- generated
# artifacts under examples/spacetaxi/generated (nukeable), the runtime
# tree in DATA/ beside the binary. Mirrors the dos.mk wiring exactly.
STAXI_GEN_DIR       := $(EXAMPLES)/spacetaxi/generated/amiga
STAXI_RUN_DIR       := $(STAXI_INSTALL_DIR)/DATA
# Level data is extracted from the C64 ROM (see dos.mk for the long
# explanation): 24 lettered levels A..X from scenes 0..23 plus the
# title from scene 24, via examples/spacetaxi/assets/romToLevel.py.
STAXI_ROM_LEVEL_GEN := $(foreach n,$(STAXI_LEVEL_NUMS),$(STAXI_GEN_DIR)/levels/level$(n).dat) \
                       $(STAXI_GEN_DIR)/levels/title.dat
STAXI_LEVEL_GEN     := $(STAXI_ROM_LEVEL_GEN)
STAXI_LEVEL_RUN   := $(patsubst $(STAXI_GEN_DIR)/%,$(STAXI_RUN_DIR)/%,$(STAXI_LEVEL_GEN))
STAXI_ASSET_DSTS  := $(STAXI_LEVEL_RUN)
# Pre-compiled sprite banks (.spc): baked from the .spr by the host spritebake
# tool for THIS target and staged in DATA/sprites, so the runtime loads
# compiled routines with no startup JIT (jlSpriteBankLoadPrecompiled).
SPRITEBAKE_BIN    := $(REPO_DIR)/build/tools/spritebake-amiga
# The C64-exact cel bank, generated by staxibake (from the shared cel table
# stCels.c + C64 bitmaps) and compiled to a .spc by the host spritebake, so
# STAXI loads its cels already compiled instead of JIT-compiling them at boot.
STAXIBAKE_BIN     := $(REPO_DIR)/build/tools/staxibake

# Per-level hook-sprite banks: the cels stLevelCelList names for each
# level that has hook sprites, baked from its level file and pre-compiled
# for this target, so no cel is JIT-compiled mid-ride. Levels without
# hook sprites have no bank; the game JIT-compiles at level entry when a
# bank is missing.
STAXI_CEL_LEVELS   := 07 08 09 10 12 16 17 21
STAXILEVEL_SPR_GEN := $(foreach n,$(STAXI_CEL_LEVELS),$(STAXI_GEN_DIR)/sprites/level$(n).spr)
STAXILEVEL_SPC_GEN := $(STAXILEVEL_SPR_GEN:.spr=.spc)
STAXILEVEL_SPC_RUN := $(patsubst $(STAXI_GEN_DIR)/%,$(STAXI_RUN_DIR)/%,$(STAXILEVEL_SPC_GEN))
STAXI_ASSET_DSTS   += $(STAXILEVEL_SPC_RUN)

# Speech baked to sample bytes per passenger pitch (assets/genSpeechPcm.py):
# expanding bits at play time is what keeps "HEY TAXI" from stalling the
# ride; the C64 run-length source stays in stSpeechData.c as the input.
STAXI_SPEECH_GEN   := $(STAXI_GEN_DIR)/speech.bin
STAXI_SPEECH_RUN   := $(STAXI_RUN_DIR)/speech.bin
STAXI_ASSET_DSTS   += $(STAXI_SPEECH_RUN)
STAXICELS_SPR_GEN := $(STAXI_GEN_DIR)/sprites/staxicels.spr
STAXICELS_SPC_GEN := $(STAXICELS_SPR_GEN:.spr=.spc)
STAXICELS_SPC_RUN := $(patsubst $(STAXI_GEN_DIR)/%,$(STAXI_RUN_DIR)/%,$(STAXICELS_SPC_GEN))
# Added HERE, not up with the other asset destinations: this variable is
# defined below that point, and the := there expanded it to nothing, so
# the compiled cel bank was never a prerequisite of the port and never
# got copied into the build tree. Every port shipped whatever .spc was
# staged the day the file was first created, and edits to stCels.c did
# not reach the game (found 2026-09-23 when a new cel made the runtime
# reject the bank as too short).
STAXI_ASSET_DSTS  += $(STAXICELS_SPC_RUN)

# Game data lives under bin/DATA/, ready to be copied into the
# scratch JOEYLIB hard-drive dir staged by joey-run.
# audio.c fopens "DATA/test.mod" etc. relative to the boot volume.
DATA_DIR    := $(BINDIR)/DATA
DATA_FILES  := $(DATA_DIR)/test.mod $(DATA_DIR)/test.sfx
# TileBank's DATA/tilebank: this port's bake of the tile-bank fixture, the
# other targets' bakes it must refuse, and the expected pixels (common.mk).
TILEBANK_DATA := $(DATA_DIR)/tilebank/own.tbk

.PHONY: all amiga clean-amiga clean
all amiga: $(LIB) $(HELLO_BIN) $(PATTERN_BIN) $(DRAW_BIN) $(KEYS_BIN) $(SERIAL_BIN) $(SERTEST_BIN) $(SAVE_BIN) $(TILEBANK_BIN) $(JOY_BIN) $(SPRITE_BIN) $(AUDIO_BIN) $(UBER_BIN) $(ADV_BIN) $(ADV2_BIN) $(AGI_BIN) $(STAXI_BIN) $(DATA_FILES) $(TILEBANK_DATA) $(call staxiData,$(STAXI_ASSET_DSTS))

$(BUILD)/obj/core/%.o: $(SRC_CORE)/%.c
	@mkdir -p $(dir $@)
	$(AMIGA_CC) $(CFLAGS) -c $< -o $@

$(BUILD)/obj/generic/%.o: $(SRC_DIR)/generic/%.c
	@mkdir -p $(dir $@)
	$(AMIGA_CC) $(CFLAGS) -c $< -o $@

$(BUILD)/obj/port/%.o: $(SRC_DIR)/amiga/%.c
	@mkdir -p $(dir $@)
	$(AMIGA_CC) $(CFLAGS) -c $< -o $@

# Hand-written 68k assembly: GAS syntax, fed through the gcc driver
# so the bundled m68k-amigaos-as (binutils) does the work.
$(BUILD)/obj/port/%.o: $(SRC_DIR)/amiga/%.s
	@mkdir -p $(dir $@)
	$(AMIGA_CC) $(CFLAGS) -c $< -o $@

# PTPlayer is third-party Devpac/vasm-syntax assembly with no
# maintained GAS port; vasm is invoked only here.
$(BUILD)/obj/port/ptplayer.o: $(PTPLAYER_DIR)/ptplayer.asm
	@mkdir -p $(dir $@)
	$(AMIGA_AS) $(PTPLAYER_ASFLAGS) $< -o $@

$(BUILD)/obj/codegen/%.o: $(CODEGEN_DIR)/%.c
	@mkdir -p $(dir $@)
	$(AMIGA_CC) $(CFLAGS) -I$(CODEGEN_DIR) -c $< -o $@

$(BUILD)/obj/68k/%.o: $(SRC_68K)/%.s
	@mkdir -p $(dir $@)
	$(AMIGA_CC) $(CFLAGS) -c $< -o $@

# 68k sprite emitters (spriteEmitPlanar68k.c) live in src/m68k/;
# -I$(CODEGEN_DIR) lets them resolve spriteEmitter.h.
$(BUILD)/obj/68k/%.o: $(SRC_68K)/%.c
	@mkdir -p $(dir $@)
	$(AMIGA_CC) $(CFLAGS) -I$(CODEGEN_DIR) -c $< -o $@

$(LIB): $(LIB_OBJS)
	@mkdir -p $(dir $@)
	$(AMIGA_AR) rcs $@ $^

$(HELLO_BIN): $(HELLO_SRC) $(LIB)
	@mkdir -p $(dir $@)
	$(AMIGA_CC) $(CFLAGS) $< $(LIB) -o $@ $(LDFLAGS)

$(PATTERN_BIN): $(PATTERN_SRC) $(LIB)
	@mkdir -p $(dir $@)
	$(AMIGA_CC) $(CFLAGS) $< $(LIB) -o $@ $(LDFLAGS)

$(DRAW_BIN): $(DRAW_SRC) $(LIB)
	@mkdir -p $(dir $@)
	$(AMIGA_CC) $(CFLAGS) $< $(LIB) -o $@ $(LDFLAGS)

$(KEYS_BIN): $(KEYS_SRC) $(LIB)
	@mkdir -p $(dir $@)
	$(AMIGA_CC) $(CFLAGS) $< $(LIB) -o $@ $(LDFLAGS)

$(SERIAL_BIN): $(SERIAL_SRC) $(LIB)
	@mkdir -p $(dir $@)
	$(AMIGA_CC) $(CFLAGS) $< $(LIB) -o $@ $(LDFLAGS)

$(SERTEST_BIN): $(SERTEST_SRC) $(LIB)
	@mkdir -p $(dir $@)
	$(AMIGA_CC) $(CFLAGS) $< $(LIB) -o $@ $(LDFLAGS)

$(SAVE_BIN): $(SAVE_SRC) $(LIB)
	@mkdir -p $(dir $@)
	$(AMIGA_CC) $(CFLAGS) $< $(LIB) -o $@ $(LDFLAGS)

$(TILEBANK_BIN): $(TILEBANK_SRC) $(LIB)
	@mkdir -p $(dir $@)
	$(AMIGA_CC) $(CFLAGS) $< $(LIB) -o $@ $(LDFLAGS)

$(JOY_BIN): $(JOY_SRC) $(LIB)
	@mkdir -p $(dir $@)
	$(AMIGA_CC) $(CFLAGS) $< $(LIB) -o $@ $(LDFLAGS)

$(SPRITE_BIN): $(SPRITE_SRC) $(LIB)
	@mkdir -p $(dir $@)
	$(AMIGA_CC) $(CFLAGS) $< $(LIB) -o $@ $(LDFLAGS)

$(AUDIO_BIN): $(AUDIO_SRC) $(LIB)
	@mkdir -p $(dir $@)
	$(AMIGA_CC) $(CFLAGS) $< $(LIB) -o $@ $(LDFLAGS)

$(UBER_BIN): $(UBER_SRC) $(LIB)
	@mkdir -p $(dir $@)
	$(AMIGA_CC) $(CFLAGS) $< $(LIB) -o $@ $(LDFLAGS)

$(ADV_BIN): $(ADV_SRC) $(LIB)
	@mkdir -p $(dir $@)
	$(AMIGA_CC) $(CFLAGS) $< $(LIB) -o $@ $(LDFLAGS)

$(ADV2_BIN): $(ADV2_SRC) $(LIB)
	@mkdir -p $(dir $@)
	$(AMIGA_CC) $(CFLAGS) $< $(LIB) -o $@ $(LDFLAGS)

$(AGI_BIN): $(AGI_SRCS) $(LIB)
	@mkdir -p $(dir $@)
	$(AMIGA_CC) $(CFLAGS) $(AGI_SRCS) $(LIB) -o $@ $(LDFLAGS)

$(STAXI_BIN): $(STAXI_SRCS) $(LIB)
	@mkdir -p $(dir $@)
	$(AMIGA_CC) $(CFLAGS) $(STAXI_SRCS) $(LIB) -o $@ $(LDFLAGS)

# Space Taxi asset pipeline. .SECONDARY keeps the generated/ artifacts
# from being auto-deleted after staging.
.SECONDARY: $(STAXI_LEVEL_GEN) $(STAXICELS_SPC_GEN) $(STAXILEVEL_SPR_GEN) $(STAXILEVEL_SPC_GEN)

$(STAXI_ROM_LEVEL_GEN) &: $(STAXI_RAW_DUMP) $(ROMTOLEVEL_BIN)
	@mkdir -p $(STAXI_GEN_DIR)/levels
	python3 $(ROMTOLEVEL_BIN) $(STAXI_RAW_DUMP) $(STAXI_GEN_DIR)/levels

$(STAXI_GEN_DIR)/%.spc: $(STAXI_GEN_DIR)/%.spr $(SPRITEBAKE_BIN)
	@mkdir -p $(dir $@)
	$(SPRITEBAKE_BIN) $< $@

$(SPRITEBAKE_BIN): FORCE
	$(MAKE) -f $(REPO_DIR)/make/tools.mk spritebake-amiga

$(STAXIBAKE_BIN): FORCE
	$(MAKE) -f $(REPO_DIR)/make/tools.mk staxibake

# The cel bank is generated from the game's cel table (stCels.c).
$(STAXICELS_SPR_GEN): $(STAXIBAKE_BIN) $(EXAMPLES)/spacetaxi/stCels.c $(EXAMPLES)/spacetaxi/stC64Data.c
	@mkdir -p $(dir $@)
	$(STAXIBAKE_BIN) $@

$(STAXI_RUN_DIR)/levels/%.dat: $(STAXI_GEN_DIR)/levels/%.dat
	@mkdir -p $(dir $@)
	cp $< $@

$(STAXI_RUN_DIR)/%.spc: $(STAXI_GEN_DIR)/%.spc
	@mkdir -p $(dir $@)
	cp $< $@

$(DATA_DIR)/test.mod: $(REPO_DIR)/assets/test.mod
	@mkdir -p $(DATA_DIR)
	cp $< $@

$(DATA_DIR)/test.sfx: $(REPO_DIR)/assets/test.sfx
	@mkdir -p $(DATA_DIR)
	cp $< $@

$(TILEBANK_DATA): $(TILEBANK_BAKE_DEPS)
	python3 $(TILEBANK_STAGE) $(PLATFORM) $(TILEBANK_PNG) $(dir $@)

clean-amiga:
	rm -rf $(BUILD)

# `clean` as an alias for `clean-amiga`. Without it a bare
# `make -f make/amiga.mk clean` FAILS -- and with stderr discarded that
# looks like success while leaving stale objects the next build links.
clean: clean-amiga

# Pull in per-object header-dependency files generated by gcc -MMD/-MP.
# Without this, editing a header (e.g. surfaceInternal.h) doesn't rebuild
# the .c files that include it, leaving a frankenstein binary where
# different TUs see different struct layouts.
-include $(LIB_OBJS:.o=.d)

# The per-level cel banks, baked from each level's file.
$(STAXI_GEN_DIR)/sprites/level%.spr: $(STAXI_GEN_DIR)/levels/level%.dat $(STAXIBAKE_BIN) $(EXAMPLES)/spacetaxi/stLevelCels.c
	@mkdir -p $(dir $@)
	$(STAXIBAKE_BIN) --level $< $@

# Speech bake rules live down here so they never become the default goal.
$(STAXI_SPEECH_GEN): $(EXAMPLES)/spacetaxi/stSpeechData.c $(EXAMPLES)/spacetaxi/assets/genSpeechPcm.py
	@mkdir -p $(dir $@)
	python3 $(EXAMPLES)/spacetaxi/assets/genSpeechPcm.py $< $@
$(STAXI_SPEECH_RUN): $(STAXI_SPEECH_GEN)
	@mkdir -p $(dir $@)
	cp $< $@