3 files changed, 80 insertions, 1 deletions
diff --git a/src/libsldj/Makefile b/src/libsldj/Makefile
new file mode 100644
index 0000000..fc15314
--- /dev/null
+++ b/src/libsldj/Makefile
@@ -0,0 +1,11 @@
+TARGET = libsldj.so
+SOURCES = $(shell find -name "*.c")
+OBJECTS = $(SOURCES:.c=.o)
+
+%.o: %.c
+	$(CC) -c -fPIC -o $@ $<
+$(TARGET): $(OBJECTS)
+	$(CC) -shared -o $(TARGET) $(OBJECTS)
+clean:
+	rm *.o
+	rm $(TARGET)
diff --git a/src/libsldj/util.c b/src/libsldj/util.c
index 61def55..b7e445c 100644
--- a/src/libsldj/util.c
+++ b/src/libsldj/util.c
@@ -1,2 +1,2 @@
-#include "libsldj/util.h"
+#include "util.h"
 
diff --git a/src/libsldj/util.h b/src/libsldj/util.h
new file mode 100644
index 0000000..566ba8d
--- /dev/null
+++ b/src/libsldj/util.h
@@ -0,0 +1,68 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdint.h>
+#include <math.h>
+
+#ifndef UTIL_H
+#define UTIL_H
+
+#define SET_BIT(b, n) (b | (0x1 << n))
+#define CLEAR_BIT(b, n) (b & ~(0x1 << n))
+#define IS_BIT_SET(b, n) ((b >> n) & 0x1)
+#define TOGGLE_BIT(b, n) (b ^ (0x1 << n))
+#define HAS_FLAG(v, f) ((v & f) == f)
+
+// Fast math macros.
+#define SLDJ_SQRT(number) sldjSqrtTable[(uint16_t)(number)]
+
+#define SLDJ_SIN(number) sldjSinTable[(uint16_t)(number)]
+#define SLDJ_COS(number) sldjCosTable[(uint16_t)(number)]
+#define SLDJ_TAN(number) sldjTanTable[(uint16_t)(number)]
+
+#define SLDJ_HYPOT2(x, y) (SLDJ_SQRT(x * x + y * y))
+#define SLDJ_HYPOT3(x, y, z) (SLDJ_SQRT(x * x + y * y + z * z))
+
+#define SLDJ_RANDOM16(seed) (seed = (75 * seed + 74) % 65537)
+#define SLDJ_RANDOM32(seed) (seed = (1664525 * seed + 1013904223) % 4294967296)
+
+// Stuff stolen from raylib/raymath
+#ifndef RL_COLOR_TYPE
+#define RL_COLOR_TYPE
+typedef struct Color {
+    unsigned char r;
+    unsigned char g;
+    unsigned char b;
+    unsigned char a;
+} Color;
+#endif
+
+#ifndef PI
+    #define PI 3.14159265358979323846f
+#endif
+
+#ifndef DEG2RAD
+    #define DEG2RAD (PI/180.0f)
+#endif
+
+#ifndef RAD2DEG
+    #define RAD2DEG (180.0f/PI)
+#endif
+
+// Used for sending information to a scanner.
+typedef struct SldjContext {
+    uint16_t viewportWidth;
+    uint16_t viewportHeight;
+    uint8_t targetFps;
+    uint16_t xCount;
+    uint16_t yCount;
+} SldjContext;
+
+// Tables.
+extern float sldjSqrtTable[65536];
+
+extern float sldjSinTable[361];
+extern float sldjCosTable[361];
+extern float sldjTanTable[361];
+
+#endif
+