/*-------------------------------------------- Examples - CRM32Pro SDK - Roberto Prieto Copyright (C) 2001-2011 MegaStorm Systems -------------------------------------------- Example 9: Logic and Render Rates --------------------------------- - Initialize SDL and CRM32Pro. - Printing help on a window. - Use of log system. - Initialize graphics: window icon, video mode and cursor. - Load resources from DPF: images(IPF) and sprites. - Using ITimeSystem to set a Rendering rate(unlimited) and a Logic Rate to 20. - Using CRM32Pro.SetRenderCallback() to draw our objects at Rendering Rate. - Clone sprites. Sprites movement using a smooth and normal way. - Information panel with desired Logic Rate and current Render Rate. - With F1 key you can enable or disable the smooth movement. - With <- and -> cursors keys you can modify the desired Logic Rate. - Exiting using the right way ;) This example is totally free and can be used without any restriction but there is not any warranty for its usage. Please, do not forget to include a copy of all the library licenses located at /licenses directory if you distribute or share it. Roberto Prieto megastorm@ono.com http://www.megastormsystems.com */ // ---Includes--- #include "CRM32Pro.h" // ---Defines--- #define EXAMPLE_VERSION "Example 9: Logic and Render Rates" #define GFX_RESOURCE "data/gfx.dpf" // DPF with graphic resources // ---Prototypes--- void RenderGraphics(int); void RenderGraphicsGL(int); void PrintHelp(); // ---Global vars--- SDL_Surface *bg, *info, *backinfo, *surfCursor; CRM32Pro_CFont *fInfo; CRM32Pro_CSprite *spr1, *spr2, *spr3, *spr4; SDL_Rect inf; Uint32 lastinfo = 0; int bSmooth = -1; // -------------MAIN FUNCTION---------------- int main(int argc,char *argv[]) { Uint8 done = 0; SDL_Event event; int tmp = 0; int iPos1, iDir1, iPos2, iDir2, iPos3, iDir3, iPos4, iDir4; // -Print help on a window- PrintHelp(); // -Log system initialize- ILogSystem.Init("LogicRenderRates.log",LOG_FILE,LOG_NORMAL,EXAMPLE_VERSION); // -CRM32Pro and SDL initialize- if(CRM32Pro.Init(SDL_INIT_VIDEO | SDL_INIT_AUDIO | SDL_INIT_TIMER) < 0) { ILogSystem.Msg(LOG_NORMAL," · [LOG] - Couldnīt initialize CRM32Pro: %s\n",SDL_GetError()); return 1; } // -Desired config- CRM32Pro.Config.Title = EXAMPLE_VERSION; CRM32Pro.Config.Icon = IImage->Load(GFX_RESOURCE,"icono"); CRM32Pro.Config.bMTFriendly = 1; //CRM32Pro.Config.VideoRenderer = RENDER_OPENGL; //CRM32Pro.Config.VideoAccel = ACCEL_HARDSMOOTH ; // -Graphics system initialize- if(!CRM32Pro.SetVideoMode()) { CRM32Pro.Quit(); return 1; } // -Time system initialize- ITimeSystem->Init(); ITimeSystem->SetRate(0,20); // Desired Rendering and Logic Frame Rate // -Set our render graphics function to fullfil desired Rendering Frame Rate- if(!CRM32Pro.IsGL()) CRM32Pro.SetRenderCallback(RenderGraphics); else CRM32Pro.SetRenderCallback(RenderGraphicsGL); // -Load resources: background, info panel, info font, sprites bg = IImage->Load(GFX_RESOURCE,"background2"); info = IImage->Load(GFX_RESOURCE,"info2"); inf.x = 6;inf.y = 6;inf.w = info->w;inf.h = info->h; backinfo = IImage->Load(GFX_RESOURCE,"info2"); fInfo = new CRM32Pro_CFont(); fInfo->Load(GFX_RESOURCE,"InfoFont"); spr1 = new CRM32Pro_CSprite(); spr1->Load(GFX_RESOURCE,"rabbit"); spr1->AutoRestore(0); spr1->Info(); // as all our sprites have the same picture, we clone them! spr2 = new CRM32Pro_CSprite(); spr2->Clone(spr1); spr3 = new CRM32Pro_CSprite(); spr3->Clone(spr1); spr4 = new CRM32Pro_CSprite(); spr4->Clone(spr1); // -Original positions and directions- iPos1 = 0; iDir1 = 1; spr2->GetOffset(&tmp,NULL); iPos2 = CRM32Pro.screen->w - tmp; iDir2 = -1; spr3->GetOffset(NULL,&tmp); iPos3 = CRM32Pro.screen->h - tmp; iDir3 = -1; iPos4 = 1; iDir4 = 1; // -Main loop- done = 1; int test =0; while(done) { // 1.Logic frame stuff // Move the sprites across the screen limits // 1.1.Sprite 1 stuff: movement of 1 pixel each logic frame iPos1 = iPos1 + (iDir1); spr1->SetPosition(CRM32Pro.screen->w / 2, iPos1, bSmooth); if((iPos1 < 1) || (iPos1 > CRM32Pro.screen->h)) iDir1 = iDir1 * (-1); // 1.2.Sprite 2 stuff: movement of 2 pixels each logic frame iPos2 = iPos2 + (2 * iDir2); spr2->SetPosition(iPos2,CRM32Pro.screen->h / 2, bSmooth); if((iPos2 < 1) || (iPos2 > CRM32Pro.screen->w)) iDir2 = iDir2 * (-1); // 1.3.Sprite 3 stuff: movement of 3 pixels each logic frame iPos3 = iPos3 + (3 * iDir3); spr3->SetPosition(CRM32Pro.screen->w / 3, iPos3, bSmooth); if((iPos3 < 1) || (iPos3 > CRM32Pro.screen->h)) iDir3 = iDir3 * (-1); // 1.4.Sprite 4 stuff: movement of 4 pixels each logic frame iPos4 = iPos4 + (4 * iDir4); spr4->SetPosition(iPos4,CRM32Pro.screen->h / 3, bSmooth); if((iPos4 < 1) || (iPos4 > CRM32Pro.screen->w)) iDir4 = iDir4 * (-1); // 2.Event loop: update all systems: our graphics using render callback function,events,timing... while(CRM32Pro.Update(&event)) { switch(event.type) { case SDL_KEYDOWN: // Exit if(event.key.keysym.sym == SDLK_ESCAPE) done = 0; // Enable or disable smooth movement if(event.key.keysym.sym == SDLK_F1) { bSmooth = bSmooth * (-1); // In order to get the smooth effect we need to update all the gfx on each iteration if(bSmooth == 1) CRM32Pro.RenderNeeded(UPDATEFRAME_ALWAYS); else CRM32Pro.RenderNeeded(UPDATEFRAME_NONE); } // Inc or dec the Logic Rate if(event.key.keysym.sym == SDLK_RIGHT) ITimeSystem->SetRate(ITimeSystem->GetDesiredRFR(),ITimeSystem->GetDesiredLFR()+1); if(event.key.keysym.sym == SDLK_LEFT) ITimeSystem->SetRate(ITimeSystem->GetDesiredRFR(),ITimeSystem->GetDesiredLFR()-1); break; case SDL_QUIT: done = 1; break; case EVENT_LOGICWAIT: // While CRM32Pro.Update() wait for fulfill the logic rate this event is raised // You could do some stuff here. // Is possible to call here to your Rendering Graphics after checking the user.code returned instead of using the CRM32Pro callback, // but it will have some extra overdraw. break; default: break; } } } // -Free resources, show information and exit- delete fInfo; delete spr4; delete spr3; delete spr2; delete spr1; CRM32Pro.FreeSurface(bg); CRM32Pro.FreeSurface(info); CRM32Pro.FreeSurface(backinfo); ITimeSystem->Info(); CRM32Pro.VideoInfo(); CRM32Pro.Quit(); return 0; } // ---Our render graphics function--- // We render our graphics if a logic frame occurred(bLogicUpdate = 1) or if CRM32Pro.IsRenderNeeded() return 1 void RenderGraphics(int bLogicUpdate) { char sTmp[16]; // Check if we need to render everything if(!CRM32Pro.IsRenderNeeded() && (!bLogicUpdate)) return; // -Blit background- SDL_BlitSurface(bg,NULL,CRM32Pro.screen,NULL); // Sprites blitting spr4->Draw(); spr3->Draw(); spr2->Draw(); spr1->Draw(); // Blit information panel: updated twice per second SDL_BlitSurface(info,NULL,CRM32Pro.screen,&inf); if((lastinfo + 500) < ITimeSystem->GetTime()) { lastinfo = ITimeSystem->GetTime(); // Restore original info panel SDL_BlitSurface(backinfo,NULL,info,NULL); // Userīs desired logic rate sprintf(sTmp,"%d",(Uint32)ITimeSystem->GetDesiredLFR()); fInfo->PutString(info,80,6,sTmp); // Frames per second (real time) sprintf(sTmp,"%d",(Uint32)ITimeSystem->GetCurrentRFR()); fInfo->PutString(info,80,23,sTmp); // Using smooth way or not? if(bSmooth == 1) fInfo->PutString(info,65,40,"ON"); else fInfo->PutString(info,65,40,"OFF"); } } // ---Our render graphics function for OpenGL mode--- // In OpenGL modes, blitting from a surface to another surface requires some conversions // so the best workaround is just blit everything to CRM32Pro.screen surface. // CRM32Pro.IsRenderNeeded() knows we are on an OpenGL mode so it will force to render everything void RenderGraphicsGL(int bLogicUpdate) { char sTmp[16]; // Check if we need to render everything if(!CRM32Pro.IsRenderNeeded() && (!bLogicUpdate)) return; // -Blit background- SDL_BlitSurface(bg,NULL,CRM32Pro.screen,NULL); // Sprites blitting spr4->Draw(); spr3->Draw(); spr2->Draw(); spr1->Draw(); // Blit information panel each frame update lastinfo = ITimeSystem->GetTime(); // Restore original info panel SDL_BlitSurface(backinfo,NULL,CRM32Pro.screen,NULL); // Userīs desired logic rate sprintf(sTmp,"%d",(Uint32)ITimeSystem->GetDesiredLFR()); fInfo->PutString(CRM32Pro.screen,80,6,sTmp); // Frames per second (real time) sprintf(sTmp,"%d",(Uint32)ITimeSystem->GetCurrentRFR()); fInfo->PutString(CRM32Pro.screen,80,23,sTmp); // Using smooth way or not? if(bSmooth == 1) fInfo->PutString(CRM32Pro.screen,65,40,"ON"); else fInfo->PutString(CRM32Pro.screen,65,40,"OFF"); } // --------------------Help STUFF------------------------ // -Print help- void PrintHelp() { char *sMsg; // Create the message sMsg = new char[1024]; strcpy(sMsg,"-----------------------------------------------------------\n"); strcat(sMsg," "); strcat(sMsg,EXAMPLE_VERSION); strcat(sMsg,"\n-----------------------------------------------------------\n\n"); strcat(sMsg," Press [ESCAPE] key to exit.\n"); strcat(sMsg," Press [F1] key to enable/disable smooth animation.\n"); strcat(sMsg," Press [RIGHT] key to increase the Logic Frame Rate.\n"); strcat(sMsg," Press [LEFT] key to decrease the Logic Frame Rate.\n"); strcat(sMsg,"\n Runtime information is logged into 'LogicRenderRates.log' file.\n"); strcat(sMsg,"\n"); // Display the message #ifdef _WINDOWS MessageBox(NULL,sMsg,"CRM32Pro SDK - HelpScreen",MB_OK); #endif #ifdef _LINUX printf("CRM32Pro SDK - HelpScreen\n%s",sMsg); #endif // Free the message delete sMsg; }
1.7.1
