98 lines
2.5 KiB
C
98 lines
2.5 KiB
C
#include <grrlib.h>
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#include <duktape.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <ogc/lwp_watchdog.h>
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#include <data.h>
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#include <wii_duk.h>
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#include <game.h>
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#include <microsecond.h>
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static float deltatime = 1.0f/60;
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static unsigned int green = RGBA(0, 255, 0, 255);
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static GRRLIB_ttfFont * font;
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static void duk_fatal_error(void *udata, const char * msg) {
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const char * err_message_format = "a fatal error has occured: %s";
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size_t message_size = strlen(err_message_format) + strlen(msg) * sizeof(char *);
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char * message = malloc(message_size);
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snprintf(message, message_size, err_message_format, msg);
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while (1) {
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GRRLIB_PrintfTTF(0, 0, font, message, 12, green);
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GRRLIB_Render();
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}
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}
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static void duk_error_loop(duk_context * ctx, const char * msg) {
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const char * err_message_format = "an error has occured: %s";
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size_t message_size = strlen(err_message_format) + strlen(msg) * sizeof(char *);
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char * message = malloc(message_size);
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snprintf(message, message_size, err_message_format, msg);
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bool error_loop_running = true;
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while (error_loop_running) {
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PAD_ScanPads();
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unsigned int pressed = PAD_ButtonsDown(0);
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GRRLIB_PrintfTTF(0, 0, font, message, 12, green);
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GRRLIB_PrintfTTF(0, 20, font, "Press A to exit", 12, green);
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GRRLIB_Render();
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if (pressed & PAD_BUTTON_A) {
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error_loop_running = false;
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}
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}
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duk_destroy_heap(ctx);
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}
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void duktape(GRRLIB_ttfFont * global_font, bool * running) {
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font = global_font;
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duk_context * ctx = duk_create_heap(NULL, NULL, NULL, NULL, duk_fatal_error);
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// create a wii object on the global object (globalThis)
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duk_define_wii_object(ctx, font, running, &deltatime);
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duk_put_global_string(ctx, "wii");
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// evaluate functions from game.js
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duk_eval_string_noresult(ctx, program);
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// call start function
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duk_get_global_string(ctx, "start");
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duk_int_t status = duk_pcall(ctx, 0);
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if (status == DUK_EXEC_ERROR) {
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duk_error_loop(ctx, duk_safe_to_string(ctx, -1));
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*running = false;
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return;
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}
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duk_pop(ctx);
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while (*running) {
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const unsigned int beginningOfFrame = ticks_to_microsecs(gettime());
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PAD_ScanPads();
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// call update function
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duk_get_global_string(ctx, "update");
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duk_int_t status = duk_pcall(ctx, 0);
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if (status == DUK_EXEC_ERROR) {
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duk_error_loop(ctx, duk_safe_to_string(ctx, -1));
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*running = false;
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return;
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}
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duk_pop(ctx);
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GRRLIB_Render();
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const unsigned int endOfFrame = ticks_to_microsecs(gettime());
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deltatime = (endOfFrame - beginningOfFrame) * MICROSECOND;
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}
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duk_destroy_heap(ctx);
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}
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