first commit

src/COMMON.h

@@ -0,0 +1,57 @@
+#pragma once
+
+#include <limits.h>
+#include <math.h>
+#include <stdbool.h>
+#include <stdint.h>
+#include <stdio.h>
+#include <string.h>
+#include <time.h>
+
+#include <cglm/cglm.h>
+
+#define PI (GLM_PI)
+#define PI_FOURTH (PI / 4)
+#define PI_EIGHTH (PI / 8)
+#define PI_HALF (PI / 2)
+#define TAU (PI * 2)
+#define RADIANS(x) (x * (PI / 180))
+#define RADIANS_MIN (0)
+#define RADIANS_MAX (TAU)
+
+#define MIN(x, min) (x < min ? min : x)
+#define MAX(x, max) (x > max ? max : x)
+#define CLAMP(x, min, max) (MIN(MAX(x, max), min))
+
+#define RANDOM_SEED_SET(seed) (srand(seed))
+#define RANDOM ((f32)rand() / (f32)RAND_MAX)
+#define RANDOM_F32(min, max) ((f32)((RANDOM * (max - min + 1)) + min))
+#define RANDOM_S32(min, max) ((s32)((RANDOM * (max - min + 1)) + min))
+#define RANDOM_BOOL() (RANDOM_S32(0, 2))
+
+#define DISTANCE_2D(x1, x2, y1, y2) (sqrt(pow(x1 - x2, 2) + pow(y1 - y2, 2)))
+#define ATAN(x1, x2, y1, y2) (fmod((atan2(y2 - y1, x2 - x1) + TAU), TAU)) /* Range between 0 and 2PI */
+
+#define MILLISECOND_TICK 600
+#define SECOND_TICK 60
+#define MINUTE_TICK 3600
+#define HOUR_TICK 216000
+
+typedef uint8_t u8;
+typedef uint16_t u16;
+typedef uint32_t u32;
+typedef uint64_t u64;
+
+typedef int8_t s8;
+typedef int16_t s16;
+typedef int32_t s32;
+typedef int64_t s64;
+
+typedef float f32;
+typedef double f64;
+
+typedef s32 (*SortCompareFunction)(const void*, const void*);
+
+static const vec4 OPAQUE = {1.0f, 1.0f, 1.0f, 1.0f};
+static const vec4 BLACK = {0.0f, 0.0f, 0.0f, 1.0f};
+static const vec4 TRANSPARENT = {0.0f, 0.0f, 0.0f, 0.0f};