/**
* @name context_2d_new
* @brief create's and returns a new context
* @param canvas - (tealeaf_canvas *)
* @param url - (const char *) name of the canvas
* @param dest_tex - (int)
* @retval context_2d* - pointer to the created context
*/
context_2d *context_2d_new(tealeaf_canvas *canvas, const char *url, int dest_tex) {
context_2d *ctx;
if (!strcmp(url, "onscreen")) {
ctx = context_2d_get_onscreen();
} else {
ctx = context_2d_init(canvas, url, dest_tex, false);
}
return ctx;
}
/**
Saves the given context_2d's buffer to a file of the given filetype
@param ctx the given context2d
@param file_name filename to save the buffer to
@return void
**/
char *context_2d_save_buffer_to_base64(context_2d *ctx, const char *image_type) {
//bind offscreen buffer to gl frame buffer
tealeaf_canvas_context_2d_bind(ctx);
unsigned char *buffer = (unsigned char*)context_2d_read_pixels(ctx);
//opengGL gives this as RGBA, Need to switch to
//BGRA which will be interpreted as ARGB in Java
//becuase of the endianess difference between Java/C
// int i;
// for(i = 0; i < ctx->width * ctx->height * 4; i+=4) {
// char r = buffer[i];
// buffer[i] = buffer[i + 2];
// buffer[i + 2] = r;
// }
char *buf = (char*)write_image_to_base64(image_type, buffer, ctx->width, ctx->height, 4);
tealeaf_canvas_context_2d_bind(context_2d_get_onscreen());
free(buffer);
return buf;
}
/**
* @name core_tick
* @brief moves the game forward by a single tick, defined by a time delta of
* last tick to this tick
* @param dt - (int) elapsed time from last tick to this tick in milliseconds
* @retval NONE
*/
void core_tick(int dt) {
if (js_ready) {
core_timer_tick(dt);
js_tick(dt);
}
// Tick the texture manager (load pending textures)
texture_manager_tick(texture_manager_get());
/*
* we need to wait 2 frames before removing the preloader after we get the
* core_hide_preloader call from JS. Only on the second frame after the
* callback are the images that were preloaded actually drawn.
*/
if (show_preload || preload_hide_frame_count < 2) {
//if we've gotten the core_hide_preloader cb, start counting frames
if (!show_preload) {
preload_hide_frame_count++;
}
texture_2d *tex = texture_manager_get_texture(texture_manager_get(), "loading.png");
if (tex && tex->loaded) {
if (do_sizing) {
calculate_size(tex);
do_sizing = false;
}
context_2d *ctx = context_2d_get_onscreen(tealeaf_canvas_get());
context_2d_loadIdentity(ctx);
context_2d_clear(ctx);
context_2d_drawImage(ctx, 0, "loading.png", &tex_size, &size, 0);
// we're the first, last, and only thing to draw, so flush the buffer
context_2d_flush(ctx);
}
}
// check the gl error and send it to java to be logged
if (js_ready) {
core_check_gl_error();
}
}
/**
* @name core_tick
* @brief moves the game forward by a single tick, defined by a time delta of
* last tick to this tick
* @param dt - (int) elapsed time from last tick to this tick in milliseconds
* @retval NONE
*/
void core_tick(int dt) {
if (js_ready) {
core_timer_tick(dt);
js_tick(dt);
}
// Tick the texture manager (load pending textures)
texture_manager_tick(texture_manager_get());
/*
* we need to wait 2 frames before removing the preloader after we get the
* core_hide_preloader call from JS. Only on the second frame after the
* callback are the images that were preloaded actually drawn.
*/
if (show_preload || preload_hide_frame_count < 2) {
//if we've gotten the core_hide_preloader cb, start counting frames
if (!show_preload) {
preload_hide_frame_count++;
// May have never loaded the splash image, so hide splash here too
device_hide_splash();
}
// If splash is defined,
const char *splash = config_get_splash();
if (splash) {
texture_2d *tex = texture_manager_get_texture(texture_manager_get(), splash);
if (!tex) {
tex = texture_manager_load_texture(texture_manager_get(), splash);
}
if (tex && tex->loaded) {
if (do_sizing) {
// Calculate rotation
tealeaf_canvas *canvas = tealeaf_canvas_get();
int canvas_width = canvas->framebuffer_width;
int canvas_height = canvas->framebuffer_height;
rotate = canvas_width > canvas_height;
rotate ^= tex->originalWidth > tex->originalHeight;
calculate_size(tex, rotate);
do_sizing = false;
}
context_2d *ctx = context_2d_get_onscreen(tealeaf_canvas_get());
context_2d_loadIdentity(ctx);
context_2d_clear(ctx);
if (rotate) {
context_2d_save(ctx);
context_2d_translate(ctx, size.y + (size.height)/2.f/tex->scale, size.x + (size.width)/2.f/tex->scale);
context_2d_rotate(ctx, (tex->originalWidth > tex->originalHeight)? -3.14f/2.f : 3.14f/2.f);
context_2d_translate(ctx, -size.x -(size.width)/2.f/tex->scale, -size.y - (size.height)/2.f/tex->scale);
}
context_2d_setGlobalCompositeOperation(ctx, source_over);
context_2d_drawImage(ctx, 0, splash, &tex_size, &size);
if (rotate) {
context_2d_restore(ctx);
}
// we're the first, last, and only thing to draw, so flush the buffer
context_2d_flush(ctx);
device_hide_splash();
}
}
}
// check the gl error and send it to java to be logged
if (js_ready) {
core_check_gl_error();
}
}