Add some basic algorithms and eval functions for an AI

makefile

@@ -2,46 +2,64 @@ CC       := gcc
 CFLAGS   := -O3 -fPIC -Wall -Wextra
 LDFLAGS  := -shared
 
-SRCDIR   := engine/src
-INCDIR   := engine/include
+# ---- paths ----
+SRCDIRS  := engine/src engine/src/ai
+INCDIRS  := engine/include
 BUILDDIR := build
 LIBNAME  := libchess
+LIB      := $(BUILDDIR)/$(LIBNAME).so
 
-# Exclude test.c from the shared lib build
-SRC := $(filter-out $(SRCDIR)/test.c,$(wildcard $(SRCDIR)/*.c))
-OBJ := $(patsubst $(SRCDIR)/%.c,$(BUILDDIR)/%.o,$(SRC))
-LIB := $(BUILDDIR)/$(LIBNAME).so
+# ---- sources/objects ----
+EXCLUDE  := engine/src/test.c
+SRCS     := $(foreach d,$(SRCDIRS),$(wildcard $(d)/*.c))
+SRCS     := $(filter-out $(EXCLUDE),$(SRCS))
+OBJS     := $(patsubst %.c,$(BUILDDIR)/%.o,$(SRCS))
+
+# ---- includes ----
+INCLUDES := $(addprefix -I,$(INCDIRS))
 
 # ---- test executable (engine/src/test.c) ----
-TESTSRC := $(SRCDIR)/test.c
-TESTOBJ := $(BUILDDIR)/test.o
-TESTBIN := $(BUILDDIR)/print_board
+TESTSRC  := engine/src/test.c
+TESTOBJ  := $(BUILDDIR)/engine/src/test.o
+TESTBIN  := $(BUILDDIR)/print_board
 
-.PHONY: all clean test test-exe run-c-test
+# ---- runner (python) ----
+PYTHON     := python3
+RUN_SCRIPT := scripts/simulation.py
+ARGS       ?=
+
+.PHONY: all clean test test-exe run-c-test run-engine
 
 all: $(LIB)
 
-$(BUILDDIR):
-	@mkdir -p $(BUILDDIR)
+# generic object rule: build/<path>/file.o from <path>/file.c
+$(BUILDDIR)/%.o: %.c
+	@mkdir -p $(dir $@)
+	$(CC) $(CFLAGS) $(INCLUDES) -c $< -o $@
 
-$(BUILDDIR)/%.o: $(SRCDIR)/%.c | $(BUILDDIR)
-	$(CC) $(CFLAGS) -I$(INCDIR) -c $< -o $@
-
-$(LIB): $(OBJ) | $(BUILDDIR)
+$(LIB): $(OBJS)
+	@mkdir -p $(dir $@)
 	$(CC) $(LDFLAGS) -o $@ $^
 
 # ---- test exe rules ----
 test-exe: $(TESTBIN)
 
-$(TESTOBJ): $(TESTSRC) | $(BUILDDIR)
-	$(CC) $(CFLAGS) -I$(INCDIR) -c $< -o $@
+$(TESTOBJ): $(TESTSRC)
+	@mkdir -p $(dir $@)
+	$(CC) $(CFLAGS) $(INCLUDES) -c $< -o $@
 
-$(TESTBIN): $(TESTOBJ) $(LIB) | $(BUILDDIR)
+$(TESTBIN): $(TESTOBJ) $(LIB)
 	$(CC) -O2 -o $@ $(TESTOBJ) -L$(BUILDDIR) -lchess -Wl,-rpath,'$$ORIGIN'
 
 run-c-test: $(TESTBIN)
 	LD_LIBRARY_PATH=$(BUILDDIR) $(TESTBIN) $(FEN)
 
+# ---- run engine (Python) ----
+# Usage: make run-engine ARGS="--fen '...' --depth 5"
+run-engine: $(LIB)
+	@echo "Running engine via $(RUN_SCRIPT)"
+	LD_LIBRARY_PATH=$(BUILDDIR) $(PYTHON) $(RUN_SCRIPT) $(ARGS)
+
 clean:
 	@echo "Cleaning build and Python caches..."
 	@rm -rf $(BUILDDIR)
@@ -55,4 +73,4 @@ test:
 	@python3 -m unittest -v; \
 	status=$$?; \
 	$(MAKE) clean; \
-	exit $$status
+	exit $$status