D:/WorkAround/prequengine/trunk/src/lbaengine.c

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#include "lbaengine.h"
#include "main.h"
#include "sdlengine.h"
#include "images.h"
#include "grid.h"
#include "scene.h"
#include "menu.h"
#include "interface.h"
#include "dialogues.h"
#include "redraw.h"

#include "hqrdepack.h"
#include "resources.h"

#ifdef GAMEMOD
#include "debug.h"
#endif


int isTimeFreezed=0;
int saveFreezedTime=0;


void freeze_time()
{
        if(!isTimeFreezed)
                saveFreezedTime = lbaTime;
        isTimeFreezed++;
}

void unfreeze_time()
{
        --isTimeFreezed;
        if(isTimeFreezed==0)
                lbaTime = saveFreezedTime;
}

int show_giveup_menu()
{
        if(skipIntro == 1)// && twinsen->life > 0 && twinsen->costumeIndex != -1 && !twinsen->staticFlagsBF.bNoDisplay)
        {
                freeze_time();
                if(giveup_menu())
                {
                        unfreeze_time();
                        redraw_engine_actions(1);
                        freeze_time();
                        //TODO: save game
                        quitGame=0;
                        cfgfile.Quit = 0;
                        unfreeze_time();
                        return 1;
                }
                else
                {
                        unfreeze_time();
                        redraw_engine_actions(1);
                }
        }
        return 0;
}

void show_game_options(short int pKey)
{
        // Press F6
        if(pKey == 0x40)
        {
                int tmpLangCD = cfgfile.LanguageCDId;
                freeze_time();
                //TODO: Stop Samples
                OptionsMenuSettings[5] = 15;
                cfgfile.LanguageCDId = 0;
                init_dialogue_bank(0);
                options_menu();
                cfgfile.LanguageCDId = tmpLangCD;
                init_dialogue_bank(currentTextBank+3);
                //TODO: play music
                unfreeze_time();
                redraw_engine_actions(1);
        }
}

int run_game_engine() // mainLoopInteration
{
        short int pKey; // current pressed key
        read_keys();

        pKey = skipIntro;

        if(show_giveup_menu())
                return 0; // give up

        show_game_options(pKey);

        // TODO: make recenter screen

        #ifdef GAMEMOD
                process_debug(pKey);
        #endif

        if(needChangeScene>-1)
                change_scene();

        redraw_engine_actions(reqBgRedraw);

        needChangeScene = -1;
        reqBgRedraw=0;

        return 0;
}

int game_engine_loop() // mainLoop
{
        quitGame = 1;

        //requestBackgroundRedraw = 1;
    //lockPalette = 1;
    //setActorAngle(0, -256, 5, &mainLoopVar1);

        while(quitGame)
        {
                if(run_game_engine())
                        return 1;
                fps_cycles(cfgfile.Fps);
                lbaTime++;
        }
        return 0;
}

int project_position_on_screen(int cX, int cY, int cZ)
{
        if(!isUsingOrhoProjection)
        {
                cX -= basePosX;
                cY -= basePosY;
                cZ -= basePosZ;
                
                if(cZ >= 0)
                {
                        int posZ = cZ + cameraPosX;

                        if(posZ < 0)
                                posZ = 0x7FFF;

                        projPosX = (cX * cameraPosY)/posZ + setSomethingVar1;
                        projPosY = (cY * cameraPosZ)/posZ + setSomethingVar2;
                        projPosZ = posZ;
                        return -1;
                }
                else
                {
                        projPosX = 0;
                        projPosY = 0;
                        projPosZ = 0;
                        return 0;
                }
        }
        else
        {
                projPosX = ((cX - cZ) * 24) / 512 + setSomethingVar1;
                projPosY = (((cX + cZ) * 12) - cY * 30) / 512 + setSomethingVar2;
                projPosZ = cY - cX - cZ;
        }
        
        return 1;
}

void set_camera_position( int X, int Y, int cX, int cY, int cZ )
{
        setSomethingVar1 = X;
        setSomethingVar2 = Y;

        cameraPosX = cX;
        cameraPosY = cY;
        cameraPosZ = cZ;

        isUsingOrhoProjection = 0;
}

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