first commit

.gitignore

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+
+
+*.o
+game

Makefile

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+# A simple Makefile for compiling small SDL projects
+
+# set the compiler
+CC := clang
+
+# set the compiler flags
+CFLAGS := `sdl2-config --libs --cflags` -ggdb3 -O0 --std=c99 -Wall -lSDL2_image -lm
+
+# add header files here
+HDRS :=
+
+# add source files here
+SRCS := game.c
+
+# generate names of object files
+OBJS := $(SRCS:.c=.o)
+
+# name of executable
+EXEC := game
+
+# default recipe
+all: $(EXEC)
+
+# recipe for building the final executable
+$(EXEC): $(OBJS) $(HDRS) Makefile
+	$(CC) -o $@ $(OBJS) $(CFLAGS)
+
+# recipe for building object files
+#$(OBJS): $(@:.o=.c) $(HDRS) Makefile
+#	$(CC) -o $@ $(@:.o=.c) -c $(CFLAGS)
+
+# recipe to clean the workspace
+clean:
+	rm -f $(EXEC) $(OBJS)
+
+.PHONY: all clean

game.c

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+#include <stdio.h>
+#include <SDL2/SDL.h>
+#include <SDL2/SDL_image.h>
+#include <SDL2/SDL_timer.h>
+
+#define WINDOW_WIDTH 500
+#define WINDOW_HEIGHT 300
+
+int main(void){
+  SDL_Window* window;
+  SDL_Renderer* renderer;
+  SDL_Surface* surface;
+  SDL_Texture* texture;
+
+  // initialize SDL
+  if (SDL_Init(SDL_INIT_VIDEO|SDL_INIT_TIMER) != 0){
+      printf("error initializing SDL: %s\n", SDL_GetError());
+      return 1;
+  }
+  // create window
+  window = SDL_CreateWindow("Cart Race",
+                            SDL_WINDOWPOS_CENTERED,
+                            SDL_WINDOWPOS_CENTERED,
+                            640, 480, 0);
+  if(!window){
+    printf("error create window: %s\n", SDL_GetError());
+    SDL_Quit();
+    return 2;
+  }
+
+  // create renderer
+  renderer = SDL_CreateRenderer(
+    window, -1,
+    SDL_RENDERER_ACCELERATED|SDL_RENDERER_PRESENTVSYNC
+  ); 
+
+  if(!renderer){
+    printf("error create renderer: %s\n", SDL_GetError());
+    SDL_DestroyWindow(window);
+    SDL_Quit();
+    return 3;
+  }
+
+  // create surface
+  surface = IMG_Load("img/hello.png");
+  if(!surface){
+    printf("error create surface: %s\n", SDL_GetError());
+    SDL_DestroyRenderer(renderer);
+    SDL_DestroyWindow(window);
+    SDL_Quit();
+    return 3;
+  }
+
+  // create texture
+  texture = SDL_CreateTextureFromSurface(renderer, surface);
+  SDL_FreeSurface(surface);
+  if(!texture){
+    printf("error create texture: %s\n", SDL_GetError());
+    SDL_DestroyRenderer(renderer);
+    SDL_DestroyWindow(window);
+    SDL_Quit();
+    return 3;
+  }
+
+  // clear the window
+  SDL_RenderClear(renderer);
+
+  // drow image
+  SDL_RenderCopy(renderer, texture, NULL, NULL);
+  SDL_RenderPresent(renderer);
+
+  // wait
+  SDL_Delay(5000);
+
+  // clean up resources before exiting
+  SDL_DestroyTexture(texture);
+  SDL_DestroyRenderer(renderer);
+  SDL_DestroyWindow(window);
+  SDL_Quit();
+}