From 44070cb972d147bcdc38695e5c84a5b2e5d3ba95 Mon Sep 17 00:00:00 2001 From: Kris Lamoureux Date: Mon, 31 Dec 2012 14:58:44 -0800 Subject: [PATCH] Broken with an error in the default argument given for parameter 5 of scrnfunk::apply_image in the core source --- core.cpp | 202 +++++++++++++++++++++++++++++++++++++++++++++++++++++++ main.cpp | 118 ++++---------------------------- main.h | 28 ++++++++ makefile | 4 ++ 4 files changed, 248 insertions(+), 104 deletions(-) create mode 100644 core.cpp create mode 100644 main.h create mode 100644 makefile diff --git a/core.cpp b/core.cpp new file mode 100644 index 0000000..aa81979 --- /dev/null +++ b/core.cpp @@ -0,0 +1,202 @@ +#include "main.h" + +namespace scrnfunk +{ + // Optimize image on load to reduce processing. + SDL_Surface *load_image(const char *file) + { + SDL_Surface *image_format; + SDL_Surface *screen_format; + + // Load image + image_format = IMG_Load(file); + + /* + DOES THE FILE EVEN EXIST? + */ + + if(image_format != 0) + { + // Optimize + screen_format = SDL_DisplayFormat(image_format); + + // Release old image + SDL_FreeSurface(image_format); + } + + return screen_format; + } + + void apply_image(int x, int y, SDL_Surface* source, SDL_Surface* destination, SDL_Rect* clip = 0) + { + SDL_Rect pos; + + pos.x = x; + pos.y = y; + + SDL_BlitSurface(source, clip, destination, &pos); + } + + // Removes color from an image. + bool RemoveColor(SDL_Surface* image, Uint8 R, Uint8 G, Uint8 B) + { + int result; + + // Map color on the image + Uint32 color = SDL_MapRGB(image->format, R, G, B); + + // Remove color from the image. + result = SDL_SetColorKey(image, SDL_SRCCOLORKEY, color); + + if(!result) + return true; + else + return false; + } +} + + + + +namespace scrns +{ + // Returns 1 (true) on success, 0 (false) on error. + bool initiateSDL(SDL_Surface *screen, int x, int y) + { + SDL_Surface *vid_init; + int init, ttf_ret; + + // Initiate SDL and check + init = SDL_Init(SDL_INIT_VIDEO); + if(init < 0) + { + fprintf(stderr, "Unable to initiate SDL: %s\n", SDL_GetError()); + return false; + } + + + // Set video and check + vid_init = SDL_SetVideoMode(x, y, 32, SDL_SWSURFACE); + if(vid_init == 0) + { + fprintf(stderr, "Video initialization failed: %s", SDL_GetError()); + return false; + } + + + // Get video surface and check + screen = SDL_GetVideoSurface(); + if(screen == 0) + { + fprintf(stderr, "Failed to get video surface: %s", SDL_GetError()); + return false; + } + + + // Set window title + SDL_WM_SetCaption(WINDOW_TITLE, 0); + + + // Initialize SDL_ttf and check + ttf_ret = TTF_Init(); + if(ttf_ret == -1) + { + fprintf(stderr, "True Type Font initialization failed: %s", SDL_GetError()); + return false; + } + + // Success: return video surface + return true; + } + + SDL_Surface * MainMenu() + { + // Screen + SDL_Surface *screen = 0; + + SDL_Surface *background = 0; + SDL_Surface *characters = 0; + SDL_Surface *message = 0; + + + // Image filenames + const char *background_image = "stage1.bmp"; + const char *characters_image = "characters.bmp"; + + // Char + SDL_Rect clip[2]; + + initiateSDL(screen, 900, 675); + + if(screen == 0) + { + fprintf(stderr, "Start up failure.\n"); + return NULL; + } + else + { + // Load images + background = scrnfunk::load_image(background_image); + characters = scrnfunk::load_image(characters_image); + + // The troll's coordinates + clip[0].x = 0; + clip[0].y = 0; + clip[0].w = 200; + clip[0].h = 160; + + // The codfish's coordinates + clip[1].x = 0; + clip[1].y = 160; + clip[1].w = 200; + clip[1].h = 100; + + // Remove the background from the characters + scrnfunk::RemoveColor(characters, 0x00, 0xFF, 0x00); // Green + + // Blit background image + scrnfunk::apply_image(0, 0, background, screen); + + // Blit troll image + scrnfunk::apply_image(700, 40, characters, screen, &clip[0]); + + // Blit codfish image + scrnfunk::apply_image(150, 300, characters, screen, &clip[1]); + + // Setup welcome text + SDL_Color whitecolor = { 255, 255, 255 }; + TTF_Font *font = TTF_OpenFont("CaviarDreams.ttf", 80); + const char* text = "Welcome to Trololo"; + + + if(!font) + { + fprintf(stderr, "TTF_OpenFont: %s\n", TTF_GetError()); + } + + /* + Checks if font or text is 0 due to the documentation: + 0 font into this function will cause a segfault. + 0 text into this function will result in undefined behavior. + */ + if(font != 0 && text != 0) + message = TTF_RenderText_Solid(font, text, whitecolor); + else + fprintf(stderr, "TFF Render Text Solid Error: init error\n"); + + // Apply message + if(message != 0) + scrnfunk::apply_image(100, 200, message, screen); + else + fprintf(stderr, "TFF Render Text Solid Error: apply error\n"); + + if(screen != 0) + SDL_Flip(screen); + else + fprintf(stderr, "Couldn't update screen.\n"); + } + + return screen; + } +} + diff --git a/main.cpp b/main.cpp index b32dcd3..c2b81db 100644 --- a/main.cpp +++ b/main.cpp @@ -1,114 +1,24 @@ -// SDL + Extensions -#include "SDL/SDL.h" -#include "SDL/SDL_image.h" -#include "SDL/SDL_ttf.h" - -// Common SDL functions for general processing. -#include "commonSDL.h" - -#define WINDOW_TITLE "Trololo" - -// Screen -SDL_Surface *screen = NULL; - -SDL_Surface *background = NULL; -SDL_Surface *characters = NULL; - -SDL_Surface *message = NULL; - -// Image filenames -const char *background_image = "stage1.bmp"; -const char *characters_image = "characters.bmp"; - -// Char -SDL_Rect clip[2]; - +#include "main.h" int main(int argc, char* args[]) { - screen = StartUp(WINDOW_TITLE, 900, 675); + SDL_Event event; + int quit = 1; - if(screen == NULL) + SDL_Surface *screen; + + screen = scrns::MainMenu(); + + // Check if user quit + while(quit == 1) { - fprintf(stderr, "Start up failure.\n"); - return 1; - } - else - { - // Load images - background = load_image(background_image); - characters = load_image(characters_image); - - // The troll's coordinates - clip[0].x = 0; - clip[0].y = 0; - clip[0].w = 200; - clip[0].h = 160; - - // The codfish's coordinates - clip[1].x = 0; - clip[1].y = 160; - clip[1].w = 200; - clip[1].h = 100; - - // Remove the background from the characters - RemoveColor(characters, 0x00, 0xFF, 0x00); // Green - - // Blit background image - apply_image(0, 0, background, screen); - - // Blit troll image - apply_image(700, 40, characters, screen, &clip[0]); - - // Blit codfish image - apply_image(150, 300, characters, screen, &clip[1]); - - // Setup welcome text - SDL_Color whitecolor = { 255, 255, 255 }; - TTF_Font *font = TTF_OpenFont("CaviarDreams.ttf", 80); - const char* text = "Welcome to Trololo"; - - - if(!font) + while(SDL_PollEvent(&event)) { - fprintf(stderr, "TTF_OpenFont: %s\n", TTF_GetError()); + if(event.type == SDL_QUIT) + quit = 0; } - - /* - Checks if font or text is NULL due to the documentation: - NULL font into this function will cause a segfault. - NULL text into this function will result in undefined behavior. - */ - if(font != NULL && text != NULL) - message = TTF_RenderText_Solid(font, text, whitecolor); - else - fprintf(stderr, "TFF Render Text Solid Error: init error\n"); - - // Apply message - if(message != NULL) - apply_image(100, 200, message, screen); - else - fprintf(stderr, "TFF Render Text Solid Error: apply error\n"); - - if(screen != NULL) - SDL_Flip(screen); - else - fprintf(stderr, "Couldn't update screen.\n"); - - SDL_Event event; - int quit = 1; - - // Check if user quit - while(quit == 1) - { - while(SDL_PollEvent(&event)) - { - if(event.type == SDL_QUIT) - quit = 0; - } - } - - return 0; } + + return 0; } diff --git a/main.h b/main.h new file mode 100644 index 0000000..02be37e --- /dev/null +++ b/main.h @@ -0,0 +1,28 @@ +#ifndef MAIN_H +#define MAIN_H + +// SDL dependencies +#include "SDL/SDL.h" // SDL 1.2.15 (32 bit) +#include "SDL/SDL_image.h" // SDL_image (1.2.12) +#include "SDL/SDL_ttf.h" // SDL_tff (2.0.11) + +// Standard dependencies +#include + +namespace scrns +{ + bool initiateSDL(SDL_Surface *screen, int x, int y); + SDL_Surface * MainMenu(); +} + +namespace scrnfunk +{ + SDL_Surface *load_image(const char *file); + void apply_image(int x, int y, SDL_Surface* source, SDL_Surface* destination, SDL_Rect* clip = 0); + bool RemoveColor(SDL_Surface* image, Uint8 R, Uint8 G, Uint8); +} + +#define VERSION 0.1-alpha +#define WINDOW_TITLE "Trololo" + +#endif diff --git a/makefile b/makefile new file mode 100644 index 0000000..b6994d6 --- /dev/null +++ b/makefile @@ -0,0 +1,4 @@ +SDL_LIBS=`pkg-config --libs sdl` -lSDL -lSDL_image -lSDL_ttf +INCLUDES=-I/opt/local/include +all: + g++ -Wall -g main.cpp core.cpp main.h -o Trololo ${INCLUDES} ${SDL_LIBS}