# DOOM (doomgeneric) for MontaukOS
#
# Upstream: https://github.com/ozkl/doomgeneric (submodule at upstream/,
# pinned; no local patches). MontaukOS support lives entirely in src/:
# doomgeneric_montauk.c (video/input), i_sound_montauk.c (audio),
# doom_wad_check.cpp (missing-WAD dialog).
#
# doom1.wad is proprietary id Software content and is deliberately NOT
# bundled; the engine (GPLv2) ships without it.

PORT_NAME := doom
PORT_ICON := doom.svg

include ../../mk/port.mk

# ==== Paths ===========================================================

DOOM_SRC := upstream/doomgeneric
LOCAL_SRC := src

# ==== Flags ===========================================================

CFLAGS := \
    -std=gnu11 \
    $(PORT_CFLAGS_COMMON) \
    -Wall \
    -Wno-unused-parameter \
    -Wno-unused-variable \
    -Wno-missing-field-initializers \
    -Wno-sign-compare \
    -Wno-pointer-sign \
    -DNORMALUNIX \
    -DLINUX \
    -DFEATURE_SOUND \
    -I $(LOCAL_SRC) \
    -I $(DOOM_SRC) \
    -isystem $(shell $(CC) -print-file-name=include)

CXXFLAGS := \
    -std=gnu++20 \
    $(PORT_CFLAGS_COMMON) \
    -Wall \
    -Wno-unused-parameter \
    -fno-rtti \
    -fno-exceptions \
    -I $(LOCAL_SRC)

LDFLAGS := $(PORT_LDFLAGS_COMMON)

LIBS := $(LIBLOADER_A) $(LIBC_A)

# ==== Sources =========================================================
# Upstream engine sources, excluding platform ports and sound backends.

DOOM_SRCS := \
    am_map.c d_event.c d_items.c d_iwad.c d_loop.c d_main.c d_mode.c \
    d_net.c doomdef.c doomgeneric.c doomstat.c dstrings.c dummy.c \
    f_finale.c f_wipe.c g_game.c gusconf.c hu_lib.c hu_stuff.c i_cdmus.c \
    i_endoom.c i_input.c i_joystick.c i_scale.c i_sound.c i_system.c \
    i_timer.c i_video.c info.c m_argv.c m_bbox.c m_cheat.c m_config.c \
    m_controls.c m_fixed.c m_menu.c m_misc.c m_random.c memio.c mus2mid.c \
    p_ceilng.c p_doors.c p_enemy.c p_floor.c p_inter.c p_lights.c p_map.c \
    p_maputl.c p_mobj.c p_plats.c p_pspr.c p_saveg.c p_setup.c p_sight.c \
    p_spec.c p_switch.c p_telept.c p_tick.c p_user.c r_bsp.c r_data.c \
    r_draw.c r_main.c r_plane.c r_segs.c r_sky.c r_things.c s_sound.c \
    sha1.c sounds.c st_lib.c st_stuff.c statdump.c tables.c v_video.c \
    w_checksum.c w_file.c w_file_stdc.c w_main.c w_wad.c wi_stuff.c \
    z_zone.c

LOCAL_SRCS     := doomgeneric_montauk.c i_sound_montauk.c
LOCAL_CXX_SRCS := doom_wad_check.cpp

DOOM_OBJS      := $(addprefix $(OBJDIR)/upstream/,$(DOOM_SRCS:.c=.o))
LOCAL_OBJS     := $(addprefix $(OBJDIR)/local/,$(LOCAL_SRCS:.c=.o))
LOCAL_CXX_OBJS := $(addprefix $(OBJDIR)/local/,$(LOCAL_CXX_SRCS:.cpp=.o))
ALL_OBJS       := $(DOOM_OBJS) $(LOCAL_OBJS) $(LOCAL_CXX_OBJS)

# ==== Rules ===========================================================

.PHONY: all clean
all: bundle

$(TARGET): $(ALL_OBJS) $(SDK_LINK_LD) Makefile $(LIBS) | $(BUNDLE_DIR)
	$(LD) $(CFLAGS) $(LDFLAGS) $(ALL_OBJS) $(LIBS) -o $@
	@echo "Built: $@ (SDK apiVersion $(SDK_API_VERSION))"

$(OBJDIR)/upstream/%.o: $(DOOM_SRC)/%.c Makefile
	@mkdir -p $(dir $@)
	$(CC) $(CFLAGS) -MMD -MP -c $< -o $@

$(OBJDIR)/local/%.o: $(LOCAL_SRC)/%.c Makefile
	@mkdir -p $(dir $@)
	$(CC) $(CFLAGS) -MMD -MP -c $< -o $@

$(OBJDIR)/local/%.o: $(LOCAL_SRC)/%.cpp Makefile
	@mkdir -p $(dir $@)
	$(CXX) $(CXXFLAGS) -MMD -MP -c $< -o $@

clean: clean-bundle

-include $(ALL_OBJS:.o=.d)