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/*
* Copyright 2014 The Emscripten Authors. All rights reserved.
* Emscripten is available under two separate licenses, the MIT license and the
* University of Illinois/NCSA Open Source License. Both these licenses can be
* found in the LICENSE file.
*/
#include <stdio.h>
#include <SDL2/SDL.h>
#include <emscripten.h>
int result = 1;
int EventHandler(void *userdata, SDL_Event *event) {
int mod;
switch(event->type) {
case SDL_KEYUP:
break;
case SDL_KEYDOWN:
switch (event->key.keysym.sym) {
case SDLK_RIGHT: printf("KEYDOWN: right\n"); result *= 7; break;
case SDLK_LEFT: printf("KEYDOWN: left\n"); result *= 11; break;
case SDLK_DOWN: printf("KEYDOWN: down\n"); result *= 13; break;
case SDLK_UP: printf("KEYDOWN: up\n"); result *= 17; break;
case SDLK_a: printf("KEYDOWN: a\n"); result *= 19; break;
default: {
if (event->key.keysym.scancode == SDL_SCANCODE_B) {
printf("KEYDOWN: b scancode\n"); result *= 23; break;
}
printf("unknown key: sym %d scancode %d\n", event->key.keysym.sym, event->key.keysym.scancode);
emscripten_force_exit(result); // comment this out to leave event handling active. Use the following to log DOM keys:
// addEventListener('keyup', function(event) { console.log(event->keyCode) }, true)
}
}
break;
case SDL_TEXTINPUT:
printf("TEXTINPUT: %c\n", event->text.text[0]);
if (event->text.text[0] == 'A') {
result *= 5;
}
break;
default: /* Report an unhandled event */
printf("I don't know what this event is (type=%d)!\n", event->type);
}
return 0;
}
void pump_events() {
SDL_Event event;
while (SDL_PollEvent(&event)) {
EventHandler(0, &event);
}
}
int main(int argc, char **argv) {
SDL_Init(SDL_INIT_VIDEO);
SDL_Window *window;
window = SDL_CreateWindow("sdl2_key",
SDL_WINDOWPOS_CENTERED, SDL_WINDOWPOS_CENTERED,
640, 480, 0);
SDL_StartTextInput();
emscripten_run_script("simulateKeyDown(38, 'ArrowUp'); simulateKeyUp(38, 'ArrowUp')"); // up
emscripten_run_script("simulateKeyDown(40, 'ArrowDown'); simulateKeyUp(40, 'ArrowDown')"); // down
emscripten_run_script("simulateKeyDown(37, 'ArrowLeft'); simulateKeyUp(37, 'ArrowLeft');"); // left
emscripten_run_script("simulateKeyDown(39, 'ArrowRight');simulateKeyUp(39, 'ArrowRight');"); // right
emscripten_run_script("simulateKeyDown(65, 'KeyA'); simulateKeyUp(65, 'KeyA');"); // a
emscripten_run_script("simulateKeyDown(66, 'KeyB'); simulateKeyUp(66, 'KeyB');"); // b
emscripten_run_script("simulateKeyDown(100, 'Numpad4'); simulateKeyUp(100, 'Numpad4');"); // trigger the end
emscripten_set_main_loop(pump_events, 3, 0);
return 99;
}
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