1 files changed, 40 insertions, 0 deletions
diff --git a/base.cpp b/base.cpp
new file mode 100644
index 0000000..adab1ea
--- /dev/null
+++ b/base.cpp
@@ -0,0 +1,40 @@
+// this file includes functions, etc. used just about everywhere
+
+#if DEBUG
+#define logln(...) printf(__VA_ARGS__), printf("\n");
+#else
+#define logln(...)
+#endif
+
+// allocates aligned temporary memory 
+static u8 *tmp_alloc(State *state, size_t bytes) {
+	u32 used = state->tmp_mem_used;
+	u32 max_aligns_needed = (u32)(bytes + sizeof(MaxAlign) - 1) / (u32)sizeof(MaxAlign); // = ceil(bytes / sizeof(MaxAlign)) 
+	MaxAlign *ret = state->tmp_mem + used;
+	if (bytes == 0) {
+		return NULL;
+	}
+	if (used + max_aligns_needed > arr_count(state->tmp_mem)) {
+		assert(0);
+		return NULL;
+	}
+	state->tmp_mem_used += max_aligns_needed;
+	memset(ret, 0, bytes);
+	return (u8 *)ret;
+}
+
+/* 
+these functions save and restore the state of the temporary memory.
+*/
+static u32 tmp_push(State *state) {
+	return state->tmp_mem_used;
+}
+
+static void tmp_pop(State *state, u32 mark) {
+	state->tmp_mem_used = mark;
+}
+
+#define tmp_alloc_object(state, type) ((type *)tmp_alloc((state), sizeof(type)))
+#define tmp_alloc_arr(state, type, n) ((type *)tmp_alloc((state), (n) * sizeof(type)))
+#define calloc_object(type) ((type *)calloc(1, sizeof(type)))
+#define calloc_arr(type, n) ((type *)calloc((n), sizeof(type)))