Initial commit

7 files changed, 217 insertions, 0 deletions

diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..9f59b1b
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,19 @@
+*.gb
+*.sgb
+*.gbc
+*.sav
+*.sn1
+*.rtc
+
+*.o
+*.2bpp
+*.1bpp
+*.pcm
+*.map
+*.sym
+
+*~
+
+; binaries
+tools/scan_includes
+pret/
diff --git a/Makefile b/Makefile
new file mode 100644
index 0000000..6b95aa7
--- /dev/null
+++ b/Makefile
@@ -0,0 +1,51 @@
+.PHONY: all compare clean text
+
+.SUFFIXES:
+.SUFFIXES: .asm .o .gbc .png
+.SECONDEXPANSION:
+
+ROMS := pokegold-spaceworld.gb
+BASEROM := baserom.gb
+OBJS := main.o wram.o
+
+# Link objects together to build a rom.
+all: $(ROMS) compare
+
+tools:
+	$(MAKE) -C tools/
+
+define DEP
+$1: $2 $$(shell tools/scan_includes $2)
+	rgbasm -E -o $$@ $$<
+endef
+
+ifeq (,$(filter clean tools,$(MAKECMDGOALS)))
+$(info $(shell $(MAKE) -C tools))
+
+$(foreach obj, $(OBJS), $(eval $(call DEP,$(obj),$(obj:.o=.asm))))
+
+endif
+
+$(ROMS): $(OBJS)
+	rgblink -n $(ROMS:.gb=.sym) -m $(ROMS:.gb=.map) -O $(BASEROM) -o $@ $^
+	rgbfix -f  -v -k 01 -l 0x33 -m 0x03 -p 0 -r 3 -t "POKEMON2GOLD" $@
+
+compare: $(ROMS) $(BASEROM)
+	cmp $^
+
+# Remove files generated by the build process.
+clean:
+	rm -rf $(ROMS) $(OBJS) $(ROMS:.gbc=.sym) build/*
+	find . \( -iname '*.1bpp' -o -iname '*.2bpp' -o -iname '*.pcm' \) -exec rm {} +
+
+%.2bpp: %.png
+	rgbgfx -o $@ $<
+
+%.1bpp: %.png
+	rgbgfx -d1 -o $@ $<
+
+%.tilemap: %.png
+	rgbgfx -t $@ $<
+%.gbcpal: %.png
+	rgbgfx -p $@ $<
+
diff --git a/README.md b/README.md
new file mode 100644
index 0000000..f4922b1
--- /dev/null
+++ b/README.md
@@ -0,0 +1,3 @@
+baserom.gb is Gold_debug.sgb
+
+md5sum `2eadbed83b775c097ff79e5128d1184f`
diff --git a/main.asm b/main.asm
new file mode 100644
index 0000000..2e71857
--- /dev/null
+++ b/main.asm
@@ -0,0 +1,4 @@
+SECTION "Init", ROM0[$100]
+    nop
+    jp $52f
+
diff --git a/tools/Makefile b/tools/Makefile
new file mode 100644
index 0000000..b11babe
--- /dev/null
+++ b/tools/Makefile
@@ -0,0 +1,17 @@
+.PHONY: all clean
+
+CC := gcc
+CFLAGS := -O3 -std=c99 -Wall -Wextra
+
+tools := \
+	scan_includes \
+
+all: $(tools)
+	@:
+
+clean:
+	rm -f $(tools)
+
+%: %.c
+	$(CC) $(CFLAGS) -o $@ $<
+
diff --git a/tools/scan_includes.c b/tools/scan_includes.c
new file mode 100644
index 0000000..2babdcf
--- /dev/null
+++ b/tools/scan_includes.c
@@ -0,0 +1,123 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <stdbool.h>
+#include <getopt.h>
+
+void usage(void) {
+	printf("Usage: scan_includes [-h] [-s] filename\n"
+	       "-h, --help\n"
+	       "    Print usage and exit\n"
+	       "-s, --strict\n"
+	       "    Fail if a file cannot be read\n");
+}
+
+struct Options {
+	bool help;
+	bool strict;
+};
+
+struct Options Options = {0};
+
+void scan_file(char* filename) {
+	FILE *f = fopen(filename, "rb");
+	if (!f) {
+		if (Options.strict) {
+			fprintf(stderr, "Could not open file: '%s'\n", filename);
+			exit(1);
+		} else {
+			return;
+		}
+	}
+
+	fseek(f, 0, SEEK_END);
+	long size = ftell(f);
+	rewind(f);
+
+	char *buffer = malloc(size + 1);
+	char *orig = buffer;
+	size = fread(buffer, 1, size, f);
+	buffer[size] = '\0';
+	fclose(f);
+
+	for (; buffer && (buffer - orig < size); buffer++) {
+		bool is_include = false;
+		bool is_incbin = false;
+		switch (*buffer) {
+			case ';':
+				buffer = strchr(buffer, '\n');
+				if (!buffer) {
+					fprintf(stderr, "%s: no newline at end of file\n", filename);
+				}
+				break;
+
+			case 'i':
+			case 'I':
+				if ((strncmp(buffer, "INCBIN", 6) == 0) || (strncmp(buffer, "incbin", 6) == 0)) {
+					is_incbin = true;
+				} else if ((strncmp(buffer, "INCLUDE", 7) == 0) || (strncmp(buffer, "include", 7) == 0)) {
+					is_include = true;
+				}
+				if (is_incbin || is_include) {
+					buffer = strchr(buffer, '"');
+					if (!buffer++) {
+						break;
+					}
+					int length = strcspn(buffer, "\"");
+					char *include = malloc(length + 1);
+					strncpy(include, buffer, length);
+					include[length] = '\0';
+					printf("%s ", include);
+					if (is_include) {
+						scan_file(include);
+					}
+					free(include);
+					buffer = strchr(buffer, '"');
+				}
+				break;
+
+		}
+		if (!buffer) {
+			break;
+		}
+
+	}
+
+	free(orig);
+}
+
+int main(int argc, char* argv[]) {
+	int i = 0;
+	struct option long_options[] = {
+		{"strict", no_argument, 0, 's'},
+		{"help", no_argument, 0, 'h'},
+		{0}
+	};
+	int opt = -1;
+	while ((opt = getopt_long(argc, argv, "sh", long_options, &i)) != -1) {
+		switch (opt) {
+		case 's':
+			Options.strict = true;
+			break;
+		case 'h':
+			Options.help = true;
+			break;
+		default:
+			usage();
+			exit(1);
+			break;
+		}
+	}
+	argc -= optind;
+	argv += optind;
+	if (Options.help) {
+		usage();
+		return 0;
+	}
+	if (argc < 1) {
+		usage();
+		exit(1);
+	}
+	scan_file(argv[0]);
+	return 0;
+}
diff --git a/wram.asm b/wram.asm
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/wram.asm