1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
|
#include "WebglContext.h"
#include "MainLoop.h"
#include "Renderer2d.h"
#include "mathlib.h"
#include "theme.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>
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) {
active_theme->update(dtSeconds);
active_theme->render();
}
void unload() {
delete active_theme;
type = ThemeType::Default;
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;
}
|
