# Compiler and flags
CXX := g++
CXXFLAGS := -std=c++20 -Wall -Wextra -O2 -I/c/msys64/mingw64/include -Ivendor/imgui-docking

# Use this to link against the correct import lib
LDFLAGS := -Llib -lglfw3 -lopengl32 -lglew32 -lglu32

# Source and build directories (including vendor folder)
SRC_DIRS := . Editor Engine vendor/imgui-docking
BUILD_DIR := build

# Find all source files
SRC := $(foreach dir, $(SRC_DIRS), $(wildcard $(dir)/*.cpp))

# Generate .o paths in build folder, mirroring source structure
OBJ := $(patsubst %.cpp, $(BUILD_DIR)/%.o, $(SRC))

# Output binary
TARGET := Three-Labs.exe

# Default rule
all: $(TARGET)

# Link object files
$(TARGET): $(OBJ)
	$(CXX) $(CXXFLAGS) -o $@ $^ $(LDFLAGS)

# Compile source files to object files in build/
$(BUILD_DIR)/%.o: %.cpp
	@mkdir "$(dir $@)" 2>nul || exit 0
	$(CXX) $(CXXFLAGS) -c $< -o $@

# Clean
clean:
	del /Q /S $(subst /,\,$(BUILD_DIR)\*.o) $(TARGET) 2>nul || exit 0
	rmdir /S /Q $(BUILD_DIR) 2>nul || exit 0

.PHONY: all clean
