/*-------------------------------------------- Examples - CRM32Pro SDK - Roberto Prieto Copyright (C) 2001-2011 MegaStorm Systems -------------------------------------------- Example 8: Sprites collision ---------------------------- - 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), fonts and sprite - Image following the mouse cursor. - Using Fixed Logic Rate. - With F1 key, you can enable/disable collision system. - Information panel with FPS(real time) and number of collisions. - 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 8: Sprites Collision" #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 *sprRabbit; SDL_Rect inf, rCursor; Uint32 last = 0, lastinfo = 0; Uint8 bFlagCollision = 1; // -------------MAIN FUNCTION---------------- int main(int argc,char *argv[]) { Uint8 done = 0; int DirX = 1, DirY = 1, SprX = 100, SprY = 100; SDL_Event event; // -Print help on a window- PrintHelp(); // -Log system initialize- ILogSystem.Init("SpriteCollision.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); // Optional: 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, sprite and image to follow the cursor- bg = IImage->Load(GFX_RESOURCE,"background2"); info = IImage->Load(GFX_RESOURCE,"info"); inf.x = 6;inf.y = 6;inf.w = info->w;inf.h = info->h; backinfo = IImage->Load(GFX_RESOURCE,"info"); fInfo = new CRM32Pro_CFont(); fInfo->Load(GFX_RESOURCE,"InfoFont"); sprRabbit = new CRM32Pro_CSprite(); sprRabbit->Load(GFX_RESOURCE,"rabbit"); sprRabbit->AutoRestore(0); surfCursor = IImage->Load(GFX_RESOURCE,"Smiley"); if(surfCursor == NULL) exit(1); rCursor.x = 100;rCursor.y = 110;rCursor.w = surfCursor->w;rCursor.h = surfCursor->h; // -Main loop- bFlagCollision = 1; done = 0; while(!done) { // 1.Logic frame stuff // Each logic frame (20 per seconds) we move the sprite. We assume that sprRabbit size is 64x64 SprX = SprX + (2 * DirX); SprY = SprY + (2 * DirY); if((SprX + 64) > CRM32Pro.screen->w) DirX = DirX * (-1); if((SprY + 64) > CRM32Pro.screen->h) DirY = DirY * (-1); if(SprX < 2) DirX = DirX * (-1); if(SprY < 2) DirY = DirY * (-1); sprRabbit->SetPosition(SprX,SprY); // 2.Event loop: update all systems: graphics,events,timing... // surfCursor follow the position of mouse. With F1 activate/desactivate collision system. ESC exit. while(CRM32Pro.Update(&event)) { switch(event.type) { case SDL_KEYDOWN: if(event.key.keysym.sym == SDLK_ESCAPE) done = 1; if(event.key.keysym.sym == SDLK_F1) bFlagCollision = bFlagCollision * (-1); break; case SDL_MOUSEMOTION: rCursor.x = event.motion.x - rCursor.w / 2; rCursor.y = event.motion.y - rCursor.h / 2; // As we have moved the sprite that follows the cursor, we order a render update CRM32Pro.RenderNeeded(); 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; sprRabbit->Info(); delete sprRabbit; CRM32Pro.FreeSurface(bg); CRM32Pro.FreeSurface(info); CRM32Pro.FreeSurface(backinfo); CRM32Pro.FreeSurface(surfCursor); 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]; int isCollision = 0, nCollisions = 0; // Check if we need to render everything if(!CRM32Pro.IsRenderNeeded() && (!bLogicUpdate)) return; // Blit background SDL_BlitSurface(bg, NULL, CRM32Pro.screen, NULL); // Sprite blitting sprRabbit->Draw(); // Detecting collisions nCollisions = 0; if(bFlagCollision == 1) { isCollision = sprRabbit->Collision(surfCursor,&rCursor,-1,-1,1); if(isCollision) nCollisions++; } // Image following the cursor blitting SDL_BlitSurface(surfCursor, NULL, CRM32Pro.screen, &rCursor); // Blit information panel: state of collision system and FPS (four times per second) SDL_BlitSurface(info,NULL,CRM32Pro.screen,&inf); if((lastinfo + 250) < ITimeSystem->GetTime()) { lastinfo = ITimeSystem->GetTime(); // Restore original info panel SDL_BlitSurface(backinfo,NULL,info,NULL); // Are we detecting collisions? if(bFlagCollision == 1) fInfo->PutString(info,62,7,"ON"); else fInfo->PutString(info,62,7,"OFF"); // Frames per second (real time) sprintf(sTmp,"%d",(Uint32)ITimeSystem->GetCurrentRFR()); fInfo->PutString(info,43,23,sTmp); // Print number of collisions sprintf(sTmp,"%d",nCollisions); fInfo->PutString(info,70,42,sTmp); } } // ---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]; int isCollision = 0, nCollisions = 0; // Check if we need to render everything if(!CRM32Pro.IsRenderNeeded() && (!bLogicUpdate)) return; // Blit background SDL_BlitSurface(bg, NULL, CRM32Pro.screen, NULL); // Sprite blitting sprRabbit->Draw(); // Detecting collisions nCollisions = 0; if(bFlagCollision == 1) { isCollision = sprRabbit->Collision(surfCursor,&rCursor,-1,-1,1); if(isCollision) nCollisions++; } // Image following the cursor blitting SDL_BlitSurface(surfCursor, NULL, CRM32Pro.screen, &rCursor); // Blit information panel: state of collision system and FPS (four times per second) lastinfo = ITimeSystem->GetTime(); // Restore original info panel SDL_BlitSurface(backinfo,NULL,CRM32Pro.screen,&inf); // Are we detecting collisions? if(bFlagCollision == 1) fInfo->PutString(CRM32Pro.screen,68,13,"ON"); else fInfo->PutString(CRM32Pro.screen,68,13,"OFF"); // Frames per second (real time) sprintf(sTmp,"%d",(Uint32)ITimeSystem->GetCurrentRFR()); fInfo->PutString(CRM32Pro.screen,49,29,sTmp); // Print number of collisions sprintf(sTmp,"%d",nCollisions); fInfo->PutString(CRM32Pro.screen,79,48,sTmp); } // --------------------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 collision detection.\n"); strcat(sMsg,"\n Runtime information is logged into 'SpriteCollision.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
