added option for sped up integration

[l2e.git] / src / app / Application.cpp

diff --git a/src/app/Application.cpp b/src/app/Application.cpp
index 4de48d4f90541ad55481587c092c772015f88cd2..830223ef0381c5025245cac2a6c09c1cce821895 100644 (file)
--- a/src/app/Application.cpp
+++ b/src/app/Application.cpp
@@ -1,24 +1,18 @@
-/*
- * Application.cpp
- *
- *  Created on: Apr 8, 2012
- *      Author: holy
- */
-
 #include "Application.h"
 
 #include "State.h"
+#include "../sdl/InitScreen.h"
 
 #include <cassert>
 
 namespace app {
 
-Application::Application(sdl::InitScreen *screen, State *initialState)
+Application::Application(sdl::InitScreen &screen, State *initialState)
 : screen(screen)
 , states()
 , last(SDL_GetTicks())
+, remaining(0)
 , inStateChage(false) {
-       assert(screen && "cannot create application without screen");
        assert(initialState && "cannot create application without initial state");
        RealPushState(initialState);
 }
@@ -86,32 +80,32 @@ void Application::PopState() {
 
 void Application::RealChangeState(State *s) {
        if (!states.empty()) {
-               states.top()->PauseState(*this, screen->Screen());
-               states.top()->ExitState(*this, screen->Screen());
+               states.top()->PauseState(screen.Screen());
+               states.top()->ExitState(*this, screen.Screen());
                states.pop();
        }
        states.push(s);
-       s->EnterState(*this, screen->Screen());
-       s->ResumeState(*this, screen->Screen());
+       s->EnterState(*this, screen.Screen());
+       s->ResumeState(screen.Screen());
 }
 
 void Application::RealPushState(State *s) {
        if (!states.empty()) {
-               states.top()->PauseState(*this, screen->Screen());
+               states.top()->PauseState(screen.Screen());
        }
        states.push(s);
-       s->EnterState(*this, screen->Screen());
-       s->ResumeState(*this, screen->Screen());
+       s->EnterState(*this, screen.Screen());
+       s->ResumeState(screen.Screen());
 }
 
 void Application::RealPopState() {
        if (states.empty()) return;
-       states.top()->PauseState(*this, screen->Screen());
-       states.top()->ExitState(*this, screen->Screen());
+       states.top()->PauseState(screen.Screen());
+       states.top()->ExitState(*this, screen.Screen());
        delete states.top();
        states.pop();
        if (!states.empty()) {
-               states.top()->ResumeState(*this, screen->Screen());
+               states.top()->ResumeState(screen.Screen());
        }
 }
 
@@ -121,8 +115,8 @@ void Application::Quit() {
 
 void Application::PopAllStates() {
        while (!states.empty()) {
-               states.top()->PauseState(*this, screen->Screen());
-               states.top()->ExitState(*this, screen->Screen());
+               states.top()->PauseState(screen.Screen());
+               states.top()->ExitState(*this, screen.Screen());
                delete states.top();
                states.pop();
        }
@@ -159,13 +153,13 @@ void Application::HandleEvents() {
        if (!CurrentState()) return;
        input.ResetInteractiveState();
        SDL_Event event;
-       while (SDL_PollEvent(&event)) {
+       while (!StateChangePending() && SDL_PollEvent(&event)) {
                switch (event.type) {
                        case SDL_QUIT:
                                PopAllStates();
                                break;
                        case SDL_VIDEORESIZE:
-                               screen->Resize(event.resize.w, event.resize.h);
+                               screen.Resize(event.resize.w, event.resize.h);
                                CurrentState()->Resize(event.resize.w, event.resize.h);
                                break;
                        case SDL_KEYDOWN:
@@ -182,16 +176,23 @@ void Application::HandleEvents() {
 
 void Application::UpdateWorld(Uint32 deltaT) {
        if (!CurrentState()) return;
-       for (Uint32 i(0); i < deltaT && !StateChangePending(); ++i) {
-               CurrentState()->PhysicsTimers().Update(0.001f);
-               CurrentState()->UpdateWorld(0.001f);
+       remaining += deltaT;
+       Uint32 step = CurrentState()->Timestep();
+       if (step > 0) {
+               for (; remaining >= step && !StateChangePending(); remaining -= step) {
+                       CurrentState()->PhysicsTimers().Update(step);
+                       CurrentState()->UpdateWorld(step);
+               }
+       } else {
+                       CurrentState()->PhysicsTimers().Update(deltaT);
+                       CurrentState()->UpdateWorld(deltaT);
        }
 }
 
 void Application::Render(void) {
        if (!CurrentState()) return;
-       CurrentState()->Render(screen->Screen());
-       screen->Flip();
+       CurrentState()->Render(screen.Screen());
+       screen.Flip();
 }
 
 }