add file support

file loading is implemented with an asset generator script that reads
all the files in the data folder and converts them into c arrays and
puts them inside a c source file.

dependencies/GRRLIB/CMakeLists.txt

@@ -5,7 +5,7 @@ project(GRRLIB)
 find_package(PkgConfig REQUIRED)
 pkg_check_modules(PNG REQUIRED libpng)
 pkg_check_modules(FREETYPE REQUIRED freetype2)
-
+pkg_check_modules(JPEG REQUIRED libjpeg)
 
 set(GRRLIB_DIR ./source/GRRLIB/GRRLIB)
 set(PNGU_DIR ./source/GRRLIB/lib/pngu)
@@ -29,6 +29,7 @@ set(grrlib_sources
 	${GRRLIB_DIR}/GRRLIB_print.c
 	${GRRLIB_DIR}/GRRLIB_render.c
 	${GRRLIB_DIR}/GRRLIB_snapshot.c
+	${GRRLIB_DIR}/GRRLIB_texEdit.c
 	${GRRLIB_DIR}/GRRLIB_ttf.c
 )
 
@@ -36,7 +37,10 @@ add_library(GRRLIB ${grrlib_sources})
 target_link_libraries(GRRLIB PRIVATE pngu)
 target_link_libraries(GRRLIB PRIVATE ${FREETYPE_LIBRARIES})
 target_link_libraries(GRRLIB PRIVATE fat)
+target_link_libraries(GRRLIB PRIVATE ${JPEG_LIBRARIES})
+
 target_include_directories(GRRLIB PRIVATE ${FREETYPE_INCLUDE_DIRS})
+target_include_directories(GRRLIB PRIVATE ${JPEG_INCLUDE_DIRS})
 
 target_include_directories(GRRLIB PUBLIC ${GRRLIB_DIR})
 

source/.gitignore

@@ -1 +1,2 @@
 game.c
+data_generated.c

source/CMakeLists.txt

@@ -1,11 +1,18 @@
 add_custom_command(
 	COMMAND ${CMAKE_CURRENT_SOURCE_DIR}/asset_generator.py ${CMAKE_CURRENT_SOURCE_DIR}/game.js ${CMAKE_CURRENT_SOURCE_DIR}/game.c
 	OUTPUT ${CMAKE_CURRENT_SOURCE_DIR}/game.c
-	DEPENDS ${CMAKE_CURRENT_SOURCE_DIR}/game.js
+	DEPENDS ${CMAKE_CURRENT_SOURCE_DIR}/game.js ${CMAKE_CURRENT_SOURCE_DIR}/asset_generator.py
 	COMMENT "Creating game.c from game.js"
 )
 
-add_executable(WiiDuktape main.c grrlib_duk.c game.c)
+add_custom_command(
+	COMMAND ${CMAKE_CURRENT_SOURCE_DIR}/data_asset_generator.py ${CMAKE_SOURCE_DIR}/data ${CMAKE_CURRENT_SOURCE_DIR}/data_generated.c
+	OUTPUT ${CMAKE_CURRENT_SOURCE_DIR}/data_generated.c
+	DEPENDS ${CMAKE_SOURCE_DIR}/data ${CMAKE_CURRENT_SOURCE_DIR}/data_asset_generator.py
+	COMMENT "Creating data_generated.c from the data directory"
+)
+
+add_executable(WiiDuktape main.c grrlib_duk.c game.c data_generated.c)
 target_link_libraries(WiiDuktape duktape)
 target_link_libraries(WiiDuktape GRRLIB)
 ogc_create_dol(WiiDuktape)

source/data.h

@@ -0,0 +1,5 @@
+#ifndef DATA_H
+#define DATA_H
+#include <stddef.h>
+int get_file_pointer(const char* filename, void ** data, size_t * size);
+#endif

source/data_asset_generator.py

@@ -0,0 +1,50 @@
+#!/usr/bin/env python3
+import argparse
+from pathlib import Path
+from PIL import Image
+
+parser = argparse.ArgumentParser()
+parser.add_argument("input")
+parser.add_argument("output")
+
+args = parser.parse_args()
+
+input = Path(args.input)
+output = Path(args.output)
+
+if not input.exists():
+	print("Input " + str(input.absolute()) + " not found.")
+	raise SystemExit(1)
+
+file_array = list()
+
+for child in Path(input).iterdir():
+	if child.is_file():
+		file_array.append({"filename": child.name, "data": child.read_bytes()})
+
+def generate_data():
+	string_list = list()
+	for index, data in enumerate(file_array):
+		hexList = list()
+		for byte in data["data"]:
+			hexList.append(f"0x{byte:02x}")
+		string_list.append(f"unsigned char data{index}[] = {{ {','.join(hexList)} }};")
+	return '\n'.join(string_list)
+
+def generate_hashmap_init():
+	string_list = list()
+	for index, data in enumerate(file_array):
+		string_list.append(f"if (strcmp(filename, \"{data["filename"]}\") == 0) {{ *data = &data{index}; *size = sizeof(data{index}); return 1; }}")
+	return f"""int get_file_pointer(const char* filename, void ** data, size_t * size) {{
+{'\n'.join(string_list)}
+return 0;
+}}"""
+
+code = f"""#include \"data.h\"
+#include <string.h>
+{generate_data()}
+{generate_hashmap_init()}
+"""
+
+with open(output, 'w') as f:
+	f.write(code)

source/game.js

@@ -11,6 +11,7 @@ const PAD_BUTTON_START = 0x1000;
 const PAD_BUTTON_A = 0x0100;
 const RED_COLOR = rgba(255, 0, 0, 255);
 const GREEN_COLOR = rgba(0, 255, 0, 255);
+const WHITE_COLOR = rgba(255, 255, 255, 255);
 
 function rgba_compare(rgba1, rgba2) {
 	return (rgba1[0] == rgba2[0]) &&
@@ -20,6 +21,7 @@ function rgba_compare(rgba1, rgba2) {
 }
 
 globalThis.rectangle_color = RED_COLOR;
+globalThis.background = null;
 
 function swap_colors() {
 	if (rgba_compare(rectangle_color, RED_COLOR)) {
@@ -30,6 +32,11 @@ function swap_colors() {
 }
 
 function start() {
+	const background = wii.get_file("background-day.png");
+	const bird = wii.get_file("yellowbird-midflap.png");
+
+	globalThis.background = wii.grrlib.load_texture(background);
+	globalThis.bird = wii.grrlib.load_texture(bird);
 }
 
 function update() {
@@ -45,6 +52,8 @@ function update() {
 		swap_colors();
 	}
 
-	wii.grrlib.fill_screen(rgba(255, 255, 255, 255));
-	wii.grrlib.rectangle(0, 0, 320, 240, rectangle_color, true);
+	wii.grrlib.fill_screen(WHITE_COLOR);
+	// wii.grrlib.rectangle(0, 0, 320, 240, rectangle_color, true);
+	wii.grrlib.draw_img(320, 0, background, 0, 1, 1, WHITE_COLOR);
+	wii.grrlib.draw_img(0, 0, bird, 0, 1, 1, WHITE_COLOR);
 }

source/grrlib_duk.c

@@ -1,4 +1,6 @@
 #include "grrlib_duk.h"
+#include "duk_config.h"
+#include "duktape.h"
 #include <grrlib.h>
 
 static unsigned int get_color(duk_context *ctx, duk_idx_t index) {
@@ -16,7 +18,6 @@ static duk_ret_t grrlib_fill_screen(duk_context *ctx) {
 
 static duk_ret_t grrlib_rectangle(duk_context *ctx) {
 	float x = duk_to_number(ctx, 0);
-
 	float y = duk_to_number(ctx, 1);
 	float width = duk_to_number(ctx, 2);
 	float height = duk_to_number(ctx, 3);
@@ -29,6 +30,40 @@ static duk_ret_t grrlib_rectangle(duk_context *ctx) {
 	return 0;
 }
 
+static duk_ret_t grrlib_load_texture(duk_context *ctx) {
+	void* file_ptr;
+	duk_push_string(ctx, "file_ptr");
+	duk_get_prop(ctx, 0);
+	file_ptr = duk_get_pointer(ctx, -1);
+	duk_pop(ctx);
+
+	size_t size;
+	duk_push_string(ctx, "size");
+	duk_get_prop(ctx, 0);
+	size = duk_get_number(ctx, -1);
+	duk_pop(ctx);
+
+	GRRLIB_texImg* texture = GRRLIB_LoadTexture(file_ptr);
+
+	duk_push_pointer(ctx, texture);	
+
+	return 1;
+}
+
+static duk_ret_t grrlib_draw_img(duk_context *ctx) {
+	float xPos = duk_to_number(ctx, 0);
+	float yPos = duk_to_number(ctx, 1);
+	void * texture = duk_get_pointer(ctx, 2);
+	float degrees = duk_to_number(ctx, 3);
+	float scaleX = duk_to_number(ctx, 4);
+	float scaleY = duk_to_number(ctx, 5);
+	unsigned int color = get_color(ctx, 6);
+
+	GRRLIB_DrawImg(xPos, yPos, texture, degrees, scaleX, scaleY, color);
+
+	return 0;
+}
+
 void define_grrlib_object(duk_context *ctx) {
 	duk_idx_t grrlib_obj = duk_push_object(ctx);
 
@@ -37,4 +72,10 @@ void define_grrlib_object(duk_context *ctx) {
 
 	duk_push_c_function(ctx, grrlib_rectangle, 6);
 	duk_put_prop_string(ctx, grrlib_obj, "rectangle");
+
+	duk_push_c_function(ctx, grrlib_load_texture, 1);
+	duk_put_prop_string(ctx, grrlib_obj, "load_texture");
+
+	duk_push_c_function(ctx, grrlib_draw_img, 7);
+	duk_put_prop_string(ctx, grrlib_obj, "draw_img");
 }

source/main.c

@@ -1,6 +1,8 @@
 #include <grrlib.h>
 #include <duktape.h>
+#include <stdint.h>
 #include "grrlib_duk.h"
+#include "data.h"
 
 extern const char* program;
 static bool running = true;
@@ -30,6 +32,27 @@ static duk_ret_t pad_buttons_down(duk_context *ctx) {
 	return 1;
 }
 
+static duk_ret_t get_file(duk_context *ctx) {
+	const char* filename = duk_to_string(ctx, 0);
+
+	void* ptr;
+	size_t size;
+
+	if (get_file_pointer(filename, &ptr, &size)) {
+		duk_idx_t file_obj = duk_push_object(ctx);
+
+		duk_push_number(ctx, size);
+		duk_put_prop_string(ctx, file_obj, "size");
+
+		duk_push_pointer(ctx, ptr);
+		duk_put_prop_string(ctx, file_obj, "file_ptr");
+
+		return 1;
+	}
+
+	return duk_error(ctx, DUK_ERR_ERROR, "Error trying to get the file %s.", filename);
+}
+
 static void define_pad_object(duk_context *ctx) {
 	duk_idx_t pad_obj = duk_push_object(ctx);
 
@@ -55,8 +78,8 @@ static void define_wii_object(duk_context *ctx) {
 	define_grrlib_object(ctx);
 	duk_put_prop_string(ctx, wii_obj, "grrlib");
 
-	duk_push_boolean(ctx, true);
-	duk_put_prop_string(ctx, wii_obj, "running");
+	duk_push_c_function(ctx, get_file, 1);
+	duk_put_prop_string(ctx, wii_obj, "get_file");
 }
 
 int main(int argc, char **argv) {