get the bird to draw.

the bird now draws! i also got a font loaded too.

.vscode/settings.json

@@ -0,0 +1,2 @@
+{
+}

jsconfig.json

@@ -0,0 +1,5 @@
+{
+	"compilerOptions": {
+		"target": "ESNext"
+	}
+}

source/CMakeLists.txt

@@ -12,7 +12,7 @@ add_custom_command(
 	COMMENT "Creating data_generated.c from the data directory"
 )
 
-add_executable(WiiDuktape main.c grrlib_duk.c game.c data_generated.c)
+add_executable(WiiDuktape main.c grrlib_duk.c wii_duk.c game.c data_generated.c)
 target_link_libraries(WiiDuktape duktape)
 target_link_libraries(WiiDuktape GRRLIB)
 ogc_create_dol(WiiDuktape)

source/game.js

@@ -1,3 +1,11 @@
+/**
+ * returns an RGBA buffer
+ * @param {number} r red
+ * @param {number} g green
+ * @param {number} b blue
+ * @param {number} a alpha
+ * @returns {RGBA}
+ */
 function rgba(r, g, b, a) {
 	const buffer = Uint8Array.allocPlain(4);
 	buffer[0] = r;
@@ -21,7 +29,11 @@ function rgba_compare(rgba1, rgba2) {
 }
 
 globalThis.rectangle_color = RED_COLOR;
+
+/** @type {GRRLibTexture} */
 globalThis.background = null;
+/** @type {GRRLibTexture} */
+globalThis.bird = null;
 
 function swap_colors() {
 	if (rgba_compare(rectangle_color, RED_COLOR)) {
@@ -53,7 +65,6 @@ function update() {
 	}
 
 	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, background, 0, 1, 1, WHITE_COLOR);
 	wii.grrlib.draw_img(0, 0, bird, 0, 1, 1, WHITE_COLOR);
 }

source/grrlib_duk.c

@@ -45,6 +45,15 @@ static duk_ret_t grrlib_load_texture(duk_context *ctx) {
 
 	GRRLIB_texImg* texture = GRRLIB_LoadTexture(file_ptr);
 
+	if (texture->data == NULL) {
+		duk_push_string(ctx, "filename");
+		duk_get_prop(ctx, 0);
+		const char * filename = duk_to_string(ctx, -1);
+		duk_pop(ctx);
+
+		return duk_error(ctx, DUK_ERR_ERROR, "An error has occured while trying load the texture for the file %s.", filename);
+	}
+
 	duk_push_pointer(ctx, texture);	
 
 	return 1;

source/main.c

@@ -1,94 +1,42 @@
 #include <grrlib.h>
 #include <duktape.h>
-#include <stdint.h>
-#include "grrlib_duk.h"
+#include <stdio.h>
+#include <stdlib.h>
+
 #include "data.h"
+#include "wii_duk.h"
 
 extern const char * program;
 static bool running = true;
-
-static duk_ret_t native_print(duk_context *ctx) {
-	GRRLIB_GeckoPrintf("%s\n", duk_to_string(ctx, 0));
-	return 0;
-}
-
-static duk_ret_t native_exit(duk_context *ctx) {
-	running = false;
-	return 0;
-}
+static GRRLIB_ttfFont * font;
+static unsigned int green = RGBA(0, 255, 0, 255); 
 
 static void duk_fatal_error(void *udata, const char *msg) {
-	GRRLIB_GeckoPrintf("an error has occured: %s\n", msg);
+	const char * err_message_format = "an error has occured: %s";
+	size_t message_size = strlen(err_message_format) + strlen(msg) * sizeof(char *);
+	char * message = malloc(message_size);
+	snprintf(message, message_size, err_message_format, msg);
+	while (1) {
+		GRRLIB_PrintfTTF(0, 0, font, message, 12, green);
+		GRRLIB_Render();
 	}
-
-static duk_ret_t pad_scan_pads() {
-	PAD_ScanPads();
-	return 0;
-}
-
-static duk_ret_t pad_buttons_down(duk_context *ctx) {
-	u32 pressed = PAD_ButtonsDown(0);
-	duk_push_number(ctx, pressed);
-	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);
-
-	duk_push_c_function(ctx, pad_scan_pads, 0);
-	duk_put_prop_string(ctx, pad_obj, "scan_pads");
-
-	duk_push_c_function(ctx, pad_buttons_down, 0);
-	duk_put_prop_string(ctx, pad_obj, "buttons_down");
-}
-
-static void define_wii_object(duk_context *ctx) {
-	duk_idx_t wii_obj = duk_push_object(ctx);
-
-	duk_push_c_function(ctx, native_print, 1);
-	duk_put_prop_string(ctx, wii_obj, "print");
-
-	duk_push_c_function(ctx, native_exit, 0);
-	duk_put_prop_string(ctx, wii_obj, "exit");
-
-	define_pad_object(ctx);
-	duk_put_prop_string(ctx, wii_obj, "pad");	
-
-	define_grrlib_object(ctx);
-	duk_put_prop_string(ctx, wii_obj, "grrlib");
-
-	duk_push_c_function(ctx, get_file, 1);
-	duk_put_prop_string(ctx, wii_obj, "get_file");
 }
 
 int main(int argc, char **argv) {
 	GRRLIB_Init();
 	PAD_Init();
 
+	// get the pixel operator font's data pointer and size
+	void * pixel_operator_font;
+	size_t pixel_operator_font_size;
+	get_file_pointer("PixelOperator.ttf", &pixel_operator_font, &pixel_operator_font_size);
+
+	font = GRRLIB_LoadTTF(pixel_operator_font, pixel_operator_font_size);
+
 	duk_context * ctx = duk_create_heap(NULL, NULL, NULL, NULL, duk_fatal_error);
 
-	define_wii_object(ctx);
+	// create a wii object on the global object (globalThis)
+	define_wii_object(ctx, font, &running);
 	duk_put_global_string(ctx, "wii");
 
 	// evaluate functions from game.js
@@ -102,6 +50,7 @@ int main(int argc, char **argv) {
 	while (running) {
 		PAD_ScanPads();
 
+		// call update function
 		duk_get_global_string(ctx, "update");
 		duk_call(ctx, 0);
 		duk_pop(ctx);
@@ -109,10 +58,7 @@ int main(int argc, char **argv) {
 		GRRLIB_Render();
 	}
 
-	// printf("destroying heap\n");
 	duk_destroy_heap(ctx);
-
-	// printf("exit time\n");
 	GRRLIB_Exit();
 
 	return 0;

source/wii_duk.c

@@ -0,0 +1,76 @@
+#include "wii_duk.h"
+#include "data.h"
+#include "grrlib_duk.h"
+
+static GRRLIB_ttfFont * font;
+static bool * running;
+static unsigned int green = RGBA(0, 255, 0, 255); 
+
+static duk_ret_t native_print(duk_context *ctx) {
+	GRRLIB_PrintfTTF(0, 0, font, duk_to_string(ctx, 0), 32, green);
+	return 0;
+}
+
+static duk_ret_t native_exit(duk_context *ctx) {
+	*running = false;
+	return 0;
+}
+
+static duk_ret_t pad_buttons_down(duk_context *ctx) {
+	u32 pressed = PAD_ButtonsDown(0);
+	duk_push_number(ctx, pressed);
+	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");
+
+		duk_push_string(ctx, filename);
+		duk_put_prop_string(ctx, file_obj, "filename");
+
+		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);
+
+	duk_push_c_function(ctx, pad_buttons_down, 0);
+	duk_put_prop_string(ctx, pad_obj, "buttons_down");
+}
+
+void define_wii_object(duk_context *ctx, struct GRRLIB_Font * grrlib_font, bool * global_running) {
+	font = grrlib_font;
+	running = global_running;	
+
+	duk_idx_t wii_obj = duk_push_object(ctx);
+
+	duk_push_c_function(ctx, native_print, 1);
+	duk_put_prop_string(ctx, wii_obj, "print");
+
+	duk_push_c_function(ctx, native_exit, 0);
+	duk_put_prop_string(ctx, wii_obj, "exit");
+
+	define_pad_object(ctx);
+	duk_put_prop_string(ctx, wii_obj, "pad");	
+
+	define_grrlib_object(ctx);
+	duk_put_prop_string(ctx, wii_obj, "grrlib");
+
+	duk_push_c_function(ctx, get_file, 1);
+	duk_put_prop_string(ctx, wii_obj, "get_file");
+}

source/wii_duk.h

@@ -0,0 +1,6 @@
+#ifndef WII_DUK_H
+#define WII_DUK_H
+#include <duktape.h>
+#include <grrlib.h>
+void define_wii_object(duk_context * ctx, struct GRRLIB_Font * grrlib_font, bool * global_running);
+#endif

types.d.ts

@@ -0,0 +1,15 @@
+declare interface RGBA {}
+declare interface FilePtr {}
+declare interface GRRLibTexture {}
+
+declare namespace wii {
+	function exit(): void
+	function get_file(filename: string) : FilePtr
+	namespace grrlib {
+		function load_texture(file: FilePtr) : GRRLibTexture
+		function fill_screen(color: RGBA): void
+		function draw_img(xPos: number, yPos: number, texture: GRRLibTexture, degrees: number, scaleX: number, scaleY: number, color: RGBA) : void
+		function rectangle(x: number, y: number, width: number, height: number, color: RGBA, filled: bool) : void
+	}
+}
+