1 files changed, 70 insertions, 0 deletions
diff --git a/src/gunner/config.h b/src/gunner/config.h
new file mode 100644
index 0000000..dc098e5
--- /dev/null
+++ b/src/gunner/config.h
@@ -0,0 +1,70 @@
+#pragma once
+
+#include <stddef.h>
+#include <stdint.h>
+
+typedef int8_t i8;
+typedef uint8_t u8;
+
+typedef int16_t i16;
+typedef uint16_t u16;
+
+typedef int32_t i32;
+typedef int64_t i64;
+
+typedef uint32_t u32;
+typedef uint64_t u64;
+
+typedef float f32;
+typedef double f64;
+
+typedef unsigned char byte;
+typedef ptrdiff_t size;
+
+/*
+You may be wondering "why fixed point values???", and that's simple
+Floating Point was a mistake and has caused great suffering to countless.
+Time-keeping is specially burdened. Nobody should ever keep track of time
+with float values. Variable precision can and WILL throw off calculations
+no matter how much of a NERD you are.
+
+What I did was to just leverage the support for floats in order to make most
+things simply take them (that's what everyone expects) then convert them to
+fixed point for precise operations.
+
+They can still be happily used for other things, specially inside shaders.
+But don't @ me.
+*/
+
+// 24.8 format
+typedef i32 fx32;
+#define FIXED_POINT_BITS 8
+#define FIXED_POINT_ONE (1 << FIXED_POINT_BITS)
+#define TO_FIXED(x) ((fx32)(x) << FIXED_POINT_BITS)
+#define FROM_FIXED(x) ((x) >> FIXED_POINT_BITS)
+#define FP_TO_FIXED(x) (fx32)((x) * FIXED_POINT_ONE)
+#define FP_FROM_FIXED(x) (f32)((x) * (f32)(1 / FIXED_POINT_ONE))
+
+typedef struct{
+	fx32 x, y;
+}vec2;
+
+typedef i8 b32;
+#define false 0
+#define true 1
+
+#ifdef DEBUG
+#  if __GNUC__
+#    define assert(c) if (!(c)) __builtin_trap()
+#  elif _MSC_VER
+#    define assert(c) if (!(c)) __debugbreak()
+#  else
+#    define assert(c) if (!(c)) *(volatile int *)0 = 0
+#  endif
+#else
+#  define assert(c)
+#endif
+
+#define sizeof(x)       (size)sizeof(x)
+#define countof(a)      (sizeof(a) / sizeof(*(a)))
+#define lengthof(s)     (countof(s) - 1)