改了一下文件结构，顺便开始规划数据格式

.gitignore

@@ -6,6 +6,10 @@ DR.code-workspace
 # PYCharm file
 .idea/
 
+# C .so .dll
+*.so
+*.dll
+
 # log files
 logs/
 

test/data.jl

@@ -0,0 +1,14 @@
+
+
+
+struct a_part
+    part_type :: String
+    part_id :: UInt64
+    enable :: Bool
+    x :: Float64
+    y :: Float64
+    x_v :: Float64
+    y_v :: Float64
+    angle :: Float16
+    angle_v :: Float64
+end

try/c/data_types.c

@@ -0,0 +1,30 @@
+#include<stdio.h>
+#include<stdlib.h>
+// DR data types
+
+// 一些用于直观感受类型字节长度的数据类型
+// 看着舒服而已（
+#define int8 char
+#define int16 short
+#define int32 int
+#define int64 long long
+#define uint8 unsigned char
+#define uint16 unsigned short
+#define uint32 unsigned int
+#define uint64 unsigned long long
+#define float32 float
+#define float64 double
+
+struct part
+{
+    /* 一个 part 的数据格式 */
+    long double a;
+    uint16 b;
+};
+
+int main(){
+    long double a = 1.0;
+    // 输出 a 的字节长度
+    printf("%o\n", sizeof(long double));
+}
+