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/*
* Copyright 2015 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 <stdlib.h>
#include <assert.h>
#include <emscripten.h>
#define GLFW_INCLUDE_ES2
#include <GLFW/glfw3.h>
GLFWwindow* g_window;
void render();
void error_callback(int error, const char* description) {
fprintf(stderr, "Error %d: %s\n", error, description);
exit(1);
}
void render() {
glClearColor(1.0f, 1.0f, 0.0f, 1.0f);
glClear(GL_COLOR_BUFFER_BIT);
}
int actions = 0;
void OnMouseClick(GLFWwindow *window, int button, int action, int mods) {
actions++;
printf("mouse actions: %d / 4\n", actions);
if (actions >= 4) {
printf("done.\n");
emscripten_force_exit(0);
}
}
int main() {
// Setup g_window
glfwSetErrorCallback(error_callback);
if (!glfwInit())
{
printf("Could not create window. Test failed.\n");
return 1;
}
glfwWindowHint(GLFW_RESIZABLE , 1);
g_window = glfwCreateWindow(600, 450, "GLFW pointerlock test", NULL, NULL);
if (!g_window)
{
printf("Could not create window. Test failed.\n");
glfwTerminate();
return 1;
}
glfwMakeContextCurrent(g_window);
// Try to disable cursor by entering pointer lock. If pointer lock failed (because glfwSetInputMode wasn't called in a user event),
// then clicking the canvas should also try to lock the pointer, as long as the cursor mode is GLFW_CURSOR_DISABLED.
glfwSetInputMode(g_window, GLFW_CURSOR, GLFW_CURSOR_DISABLED);
// When we see enough clicks, we close the window
glfwSetMouseButtonCallback(g_window, OnMouseClick);
// Main loop
printf("Click the canvas to enter pointer lock mode. The browser should offer to hide the mouse pointer. Make sure to accept it.\n");
printf("If you exit pointer lock (such as pressing ESC on keyboard), clicking the canvas should lock the pointer again.\n");
emscripten_set_main_loop(render, 0, 1);
__builtin_trap();
glfwTerminate();
return 0;
}
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