src/sgegamestate.c

/*
 * Copyright (c) 2007 Heiko Irrgang
 *
 * The license and distribution terms for this file may be
 * found in the file COPYING in this distribution or at
 * http://93-interactive.com/cms/products/software/sdl-game-engine/license/
 */

#include <sge.h>
#include <assert.h>

SGEGAMESTATEMANAGER* sgeGameStateManagerNew(void)
{
        SGEGAMESTATEMANAGER *ret;
        sgeNew(ret, SGEGAMESTATEMANAGER);
        return ret;
}

SGEGAMESTATE* sgeGameStateNew(void)
{
        SGEGAMESTATE *ret;
        sgeNew(ret, SGEGAMESTATE);
        return ret;
}

void sgeGameStateManagerQuit(SGEGAMESTATEMANAGER *manager)
{
        manager->quit = 1;
}

int sgeGameStateManagerChange(SGEGAMESTATEMANAGER *manager, SGEGAMESTATE *next_state)
{
        if (manager->current && manager->current->onStateChange) {
                if (!manager->current->onStateChange(manager->current, next_state)) {
                        return 0;
                }
        }
        manager->current = next_state;
        next_state->manager = manager;
        return 1;
}

void sgeGameStateManagerRun(SGEGAMESTATEMANAGER *manager, int fps)
{
        SDL_Event event;
        SGETIMER t;
        sgeClearEvents();
        t=sgeStartRedrawTimer(fps);

        assert(manager->current);
        manager->quit = 0;

        while (SDL_WaitEvent(&event) && !manager->quit) {
                switch (event.type) {
                        case SDL_USEREVENT:
                                if (event.user.code==SGEREDRAW && manager->current->onRedraw) {
                                        manager->current->onRedraw(manager->current);
                                }
                                sgeEventResetInputs(&manager->event_state);
                                break;
                        case SDL_KEYDOWN:
                                if (manager->current->onKeyDown!=NULL) {
                                        if (manager->current->onKeyDown(manager->current, &event)) {
                                                break;
                                        }
                                }
                                sgeEventApply(&manager->event_state, &event);
                                break;
                        case SDL_KEYUP:
                                if (manager->current->onKeyUp!=NULL) {
                                        if (manager->current->onKeyUp(manager->current, &event)) {
                                                break;
                                        }
                                }
                                sgeEventApply(&manager->event_state, &event);
                                break;
                        case SDL_JOYBUTTONUP:
                                if (manager->current->onJoystickButtonUp!=NULL) {
                                        if (manager->current->onJoystickButtonUp(manager->current, &event)) {
                                                break;
                                        }
                                }
                                sgeEventApply(&manager->event_state, &event);
                                break;
                        case SDL_JOYBUTTONDOWN:
                                if (manager->current->onJoystickButtonDown!=NULL) {
                                        if (manager->current->onJoystickButtonDown(manager->current, &event)) {
                                                break;
                                        }
                                }
                                sgeEventApply(&manager->event_state, &event);
                                break;
                        case SDL_MOUSEBUTTONDOWN:
                                if (manager->current->onMouseDown!=NULL) {
                                        manager->current->onMouseDown(manager->current, &event);
                                }
                                break;
                        case SDL_MOUSEBUTTONUP:
                                if (manager->current->onMouseUp!=NULL) {
                                        manager->current->onMouseUp(manager->current, &event);
                                }
                                break;
                        case SDL_MOUSEMOTION:
                                if (manager->current->onMouseMove!=NULL) {
                                        manager->current->onMouseMove(manager->current, &event);
                                }
                                break;
                        case SDL_JOYAXISMOTION:
                                if (manager->current->onJoystickMove!=NULL) {
                                        manager->current->onJoystickMove(manager->current, &event);
                                }
                                break;
                        case SDL_QUIT:
                                manager->quit = 1;
                                break;
                }
        }

        sgeStopRedrawTimer(t);
}