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#include "WebglContext.h"
#include "MainLoop.h"
#include "Renderer2d.h"
#include "mathlib.h"
#include "types.h"
#include "summer/SummerTheme.h"
#include "autumn/AutumnTheme.hpp"
#include "spring/SpringTheme.hpp"
#include "winter/WinterTheme.hpp"
#include <cstdio>
#include <emscripten/fetch.h>
enum Theme {
Default = 0,
Autumn,
Winter,
Spring,
Summer
};
void load(Theme 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;
Renderer2d renderer2d;
MainLoop mainLoop;
Theme activeTheme = Theme::Default;
AutumnTheme autumnTheme;
WinterTheme winterTheme;
SpringTheme springTheme;
SummerTheme summerTheme;
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(Theme theme) {
if (activeTheme == theme) {
printf("This theme is already active.\n");
return;
}
unload(); // Try and unload before we load, so that we start fresh
activeTheme = theme;
mainLoop.run(update);
switch (activeTheme) {
case Theme::Autumn:
renderer2d.load(&context);
autumnTheme.load(&renderer2d);
break;
case Theme::Winter:
renderer2d.load(&context);
winterTheme.load(&renderer2d);
break;
case Theme::Spring: {
springTheme.load(&context);
break;
}
case Theme::Summer:
renderer2d.load(&context);
summerTheme.load(&renderer2d);
break;
default:
break;
}
}
void update(f32 dtSeconds, void* userData) {
// -- Update
switch (activeTheme) {
case Theme::Autumn:
autumnTheme.update(dtSeconds);
break;
case Theme::Winter:
winterTheme.update(dtSeconds);
break;
case Theme::Spring:
springTheme.update(dtSeconds);
break;
case Theme::Summer:
summerTheme.update(dtSeconds);
break;
default:
break;
}
// -- Render
switch (activeTheme) {
case Theme::Autumn:
renderer2d.render();
autumnTheme.render(&renderer2d);
break;
case Theme::Winter:
renderer2d.render();
winterTheme.render(&renderer2d);
break;
case Theme::Spring:
springTheme.render();
break;
case Theme::Summer:
renderer2d.render();
summerTheme.render(&renderer2d);
break;
default:
break;
}
}
void unload() {
switch (activeTheme) {
case Theme::Autumn:
autumnTheme.unload();
break;
case Theme::Winter:
winterTheme.unload();
break;
case Theme::Spring:
springTheme.unload();
break;
case Theme::Summer:
summerTheme.unload();
break;
default:
break;
}
activeTheme = Theme::Default;
if (mainLoop.isRunning) {
mainLoop.stop();
renderer2d.unload();
}
}
// -- 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(Theme::Autumn);
return true;
}
EM_BOOL selectWinter(int eventType, const EmscriptenMouseEvent* mouseEvent, void* userData) {
printf("Winter theme selected\n");
load(Theme::Winter);
return true;
}
EM_BOOL selectSpring(int eventType, const EmscriptenMouseEvent* mouseEvent, void* userData) {
printf("Spring theme selected\n");
load(Theme::Spring);
return true;
}
EM_BOOL selectSummer(int eventType, const EmscriptenMouseEvent* mouseEvent, void* userData) {
printf("Summer theme selected\n");
load(Theme::Summer);
return true;
}
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