polyplex.core.events source code

1 module polyplex.core.events;
2 import polyplex.core.input;
3 import derelict.sdl2.sdl;
4 import std.stdio;
5 import sev.event;
6 
7 public class GameResizeEventArgs : EventArgs {
8 	public void* SDLEvent;
9 }
10 
11 public class PPEvents {
12 	public static SDL_Event[] Events;
13 
14 	public static PumpEvents() {
15 		// Then poll everything and push it to our own event queue
16 		Events.length = 0;
17 		SDL_Event ev;
18 		while(SDL_PollEvent(&ev)) {
19 			Events ~= ev;
20 		}
21 	}
22 }
23 
24 public class GameEventSystem {
25 	private bool lastHandled;
26 
27 	public Event OnWindowSizeChanged = new Event();
28 	public Event OnExitRequested = new Event();
29 
30 	this() {
31 	}
32 
33 	/**
34 		<BACKEND> Update essential things like handling game exit and resizing.
35 	*/
36 	public void Update() {
37 
38 		foreach(SDL_Event ev; PPEvents.Events) {
39 			lastHandled = true;
40 			if (ev.type == SDL_QUIT) {
41 				OnExitRequested(cast(void*)this);
42 			}
43 			if (ev.type == SDL_WINDOWEVENT) {
44 				if (ev.window.event == SDL_WINDOWEVENT_SIZE_CHANGED || ev.window.event == SDL_WINDOWEVENT_RESIZED) {
45 					GameResizeEventArgs args = new GameResizeEventArgs();
46 					args.SDLEvent = cast(void*)ev.window.event;
47 					OnWindowSizeChanged(cast(void*)this, args);
48 				}
49 			}
50 
51 			//Update last handled.
52 			lastHandled = false;
53 		}
54 	}
55 }