init

makefile

@@ -0,0 +1,49 @@
+TARGET_EXEC := rts_game
+
+BUILD_DIR := ./build
+SRC_DIRS := ./src
+
+# Find all the C and C++ files we want to compile
+# Note the single quotes around the * expressions. The shell will incorrectly expand these otherwise, but we want to send the * directly to the find command.
+SRCS := $(shell find $(SRC_DIRS) -name '*.cpp' -or -name '*.c' -or -name '*.s')
+
+# Prepends BUILD_DIR and appends .o to every src file
+# As an example, ./your_dir/hello.cpp turns into ./build/./your_dir/hello.cpp.o
+OBJS := $(SRCS:%=$(BUILD_DIR)/%.o)
+
+# String substitution (suffix version without %).
+# As an example, ./build/hello.cpp.o turns into ./build/hello.cpp.d
+DEPS := $(OBJS:.o=.d)
+
+# Every folder in ./src will need to be passed to GCC so that it can find header files
+INC_DIRS := $(shell find $(SRC_DIRS) -type d)
+# Add a prefix to INC_DIRS. So moduleA would become -ImoduleA. GCC understands this -I flag
+INC_FLAGS := $(addprefix -I,$(INC_DIRS))
+
+# The -MMD and -MP flags together generate Makefiles for us!
+# These files will have .d instead of .o as the output.
+CPPFLAGS := $(INC_FLAGS) -MMD -MP
+
+# The final build step.
+$(BUILD_DIR)/$(TARGET_EXEC): $(OBJS)
+	$(CXX) $(OBJS) -o $@ $(LDFLAGS)
+
+# Build step for C source
+$(BUILD_DIR)/%.c.o: %.c
+	mkdir -p $(dir $@)
+	$(CC) $(CPPFLAGS) $(CFLAGS) -c $< -o $@
+
+# Build step for C++ source
+$(BUILD_DIR)/%.cpp.o: %.cpp
+	mkdir -p $(dir $@)
+	$(CXX) $(CPPFLAGS) $(CXXFLAGS) -c $< -o $@
+
+
+.PHONY: clean
+clean:
+	rm -r $(BUILD_DIR)
+
+# Include the .d makefiles. The - at the front suppresses the errors of missing
+# Makefiles. Initially, all the .d files will be missing, and we don't want those
+# errors to show up.
+-include $(DEPS)

src/main.c

@@ -0,0 +1,50 @@
+#include <SDL2/SDL.h>
+
+// Define constants for screen width and height
+const int SCREEN_WIDTH = 800;
+const int SCREEN_HEIGHT = 600;
+
+int main(int argc, char* argv[]) {
+    // Initialize SDL
+    SDL_Init(SDL_INIT_VIDEO);
+
+    // Create a window
+    SDL_Window* window = SDL_CreateWindow("RTS Game", SDL_WINDOWPOS_UNDEFINED, SDL_WINDOWPOS_UNDEFINED,
+                                          SCREEN_WIDTH, SCREEN_HEIGHT, SDL_WINDOW_SHOWN);
+
+    // Create a renderer
+    SDL_Renderer* renderer = SDL_CreateRenderer(window, -1, SDL_RENDERER_ACCELERATED);
+
+    // Main loop flag
+    bool quit = false;
+
+    // Event handler
+    SDL_Event e;
+
+    // Main loop
+    while (!quit) {
+        // Handle events on queue
+        while (SDL_PollEvent(&e) != 0) {
+            // User requests quit
+            if (e.type == SDL_QUIT) {
+                quit = true;
+            }
+        }
+
+        // Clear screen
+        SDL_SetRenderDrawColor(renderer, 0xFF, 0xFF, 0xFF, 0xFF);
+        SDL_RenderClear(renderer);
+
+        // Update screen
+        SDL_RenderPresent(renderer);
+    }
+
+    // Destroy window and renderer
+    SDL_DestroyRenderer(renderer);
+    SDL_DestroyWindow(window);
+
+    // Quit SDL subsystems
+    SDL_Quit();
+
+    return 0;
+}