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#include "autumn/autumn_theme.hpp"
#include "main_loop.h"
#include "mathlib.h"
#include "renderer_2d.h"
#include "spring/spring_theme.hpp"
#include "summer/summer_theme.h"
#include "theme.h"
#include "types.h"
#include "webgl_context.h"
#include "winter/winter_theme.hpp"
#include <cstdio>
#include <emscripten/fetch.h>
void load(ThemeType theme);
void unload();
void update(f32 dtSeconds, void *userData);
EM_BOOL selectNone(int eventType, const EmscriptenMouseEvent *mouseEvent,
void *userData);
EM_BOOL selectAutumn(int eventType, const EmscriptenMouseEvent *mouseEvent,
void *userData);
EM_BOOL selectWinter(int eventType, const EmscriptenMouseEvent *mouseEvent,
void *userData);
EM_BOOL selectSpring(int eventType, const EmscriptenMouseEvent *mouseEvent,
void *userData);
EM_BOOL selectSummer(int eventType, const EmscriptenMouseEvent *mouseEvent,
void *userData);
WebglContext context;
MainLoop mainLoop;
ThemeType type;
Theme *active_theme;
int main() {
context.init("#theme_canvas");
emscripten_set_click_callback("#theme_button_default", NULL, false,
selectNone);
emscripten_set_click_callback("#theme_button_autumn", NULL, false,
selectAutumn);
emscripten_set_click_callback("#theme_button_winter", NULL, false,
selectWinter);
emscripten_set_click_callback("#theme_button_spring", NULL, false,
selectSpring);
emscripten_set_click_callback("#theme_button_summer", NULL, false,
selectSummer);
return 0;
}
// -- Scene loading, updating, and unloading logic
void load(ThemeType theme) {
if (type == theme) {
printf("This theme is already active.\n");
return;
}
unload(); // Try and unload before we load, so that we start fresh
type = theme;
mainLoop.run(update);
switch (type) {
case ThemeType::Autumn:
active_theme = new AutumnTheme(&context);
break;
case ThemeType::Winter:
active_theme = new WinterTheme(&context);
break;
case ThemeType::Spring:
active_theme = new SpringTheme(&context);
break;
case ThemeType::Summer:
active_theme = new SummerTheme(&context);
break;
default:
break;
}
}
void update(f32 dtSeconds, void *userData) {
if (!active_theme)
return;
active_theme->update(dtSeconds);
active_theme->render();
}
void unload() {
delete active_theme;
active_theme = nullptr;
type = ThemeType::Default;
glClearColor(0, 0, 0, 0);
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT | GL_STENCIL_BUFFER_BIT);
if (mainLoop.isRunning) {
mainLoop.stop();
}
}
// -- HTML5 callbacks
EM_BOOL selectNone(int eventType, const EmscriptenMouseEvent *mouseEvent,
void *userData) {
printf("Default theme selected\n");
unload();
return true;
}
EM_BOOL selectAutumn(int eventType, const EmscriptenMouseEvent *mouseEvent,
void *userData) {
printf("Autumn theme selected\n");
load(ThemeType::Autumn);
return true;
}
EM_BOOL selectWinter(int eventType, const EmscriptenMouseEvent *mouseEvent,
void *userData) {
printf("Winter theme selected\n");
load(ThemeType::Winter);
return true;
}
EM_BOOL selectSpring(int eventType, const EmscriptenMouseEvent *mouseEvent,
void *userData) {
printf("Spring theme selected\n");
load(ThemeType::Spring);
return true;
}
EM_BOOL selectSummer(int eventType, const EmscriptenMouseEvent *mouseEvent,
void *userData) {
printf("Summer theme selected\n");
load(ThemeType::Summer);
return true;
}
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