From 23ab6de6dd80e3418cb5909081a73b261df52278 Mon Sep 17 00:00:00 2001
From: luboslenco <lubos.lenco@gmail.com>
Date: Fri, 5 Jun 2026 14:48:18 +0200
Subject: [PATCH] base: cleanup

---
 base/project.js           |  2 +-
 base/sources/iron_array.c | 28 ++++++++++++++++++++++++++++
 base/sources/iron_array.h |  3 +++
 base/sources/iron_math.c  |  8 ++++++++
 base/sources/iron_math.h  |  2 ++
 5 files changed, 42 insertions(+), 1 deletion(-)

diff --git a/base/project.js b/base/project.js
index 1edc8d1f..701dd77d 100644
--- a/base/project.js
+++ b/base/project.js
@@ -161,7 +161,7 @@ else {
 }
 
 if (flags.with_physics) {
-	project.add_define("arm_physics");
+	project.add_define("WITH_PHYSICS");
 	project.add_cfiles("sources/libs/asim.c");
 }
 
diff --git a/base/sources/iron_array.c b/base/sources/iron_array.c
index 0ac5831b..f26ed2d6 100644
--- a/base/sources/iron_array.c
+++ b/base/sources/iron_array.c
@@ -671,3 +671,31 @@ uint8_t half_to_u8_fast(uint16_t h) {
 	uint32_t res   = (val * 255) >> shift;
 	return (uint8_t)res;
 }
+
+buffer_t *buffer_half_to_u8(buffer_t *buffer) {
+	for (int32_t i = 0; i < buffer->length / 2.0; ++i) {
+		buffer->buffer[i] = half_to_u8_fast(buffer_get_u16(buffer, i * 2));
+	}
+	return buffer;
+}
+
+buffer_t *buffer_bgra_swap(buffer_t *buffer) {
+	for (uint32_t i = 0; i < buffer->length / 4; ++i) {
+		uint8_t r                 = buffer->buffer[i * 4];
+		buffer->buffer[i * 4]     = buffer->buffer[i * 4 + 2];
+		buffer->buffer[i * 4 + 2] = r;
+	}
+	return buffer;
+}
+
+buffer_t *buffer_bgra64_swap(buffer_t *buffer) {
+	for (uint32_t i = 0; i < buffer->length / 8; ++i) {
+		uint8_t r_low             = buffer->buffer[i * 8 + 4];
+		uint8_t r_high            = buffer->buffer[i * 8 + 5];
+		buffer->buffer[i * 8 + 4] = buffer->buffer[i * 8 + 0];
+		buffer->buffer[i * 8 + 5] = buffer->buffer[i * 8 + 1];
+		buffer->buffer[i * 8]     = r_low;
+		buffer->buffer[i * 8 + 1] = r_high;
+	}
+	return buffer;
+}
diff --git a/base/sources/iron_array.h b/base/sources/iron_array.h
index 6ac75f2e..96973fc9 100644
--- a/base/sources/iron_array.h
+++ b/base/sources/iron_array.h
@@ -151,3 +151,6 @@ any_array_t    *any_array_create_from_raw(void **raw, uint32_t length);
 string_array_t *string_array_create(uint32_t length);
 uint16_t        float_to_half_fast(float value);
 uint8_t         half_to_u8_fast(uint16_t h);
+buffer_t       *buffer_half_to_u8(buffer_t *buffer);
+buffer_t       *buffer_bgra_swap(buffer_t *buffer);
+buffer_t       *buffer_bgra64_swap(buffer_t *buffer);
diff --git a/base/sources/iron_math.c b/base/sources/iron_math.c
index a6ef4fe2..09f3870f 100644
--- a/base/sources/iron_math.c
+++ b/base/sources/iron_math.c
@@ -135,6 +135,14 @@ bool vec2_isnan(vec2_t v) {
 //  ╚████╔╝ ███████╗╚██████╗     ██║
 //   ╚═══╝  ╚══════╝ ╚═════╝     ╚═╝
 
+f32_array_t *vec3_to_f32_array(vec4_t v) {
+	f32_array_t *res = f32_array_create(3);
+	res->buffer[0]   = v.x;
+	res->buffer[1]   = v.y;
+	res->buffer[2]   = v.z;
+	return res;
+}
+
 vec4_t vec4_cross(vec4_t a, vec4_t b) {
 	vec4_t v;
 	v.x = a.y * b.z - a.z * b.y;
diff --git a/base/sources/iron_math.h b/base/sources/iron_math.h
index c5a1729c..b614550d 100644
--- a/base/sources/iron_math.h
+++ b/base/sources/iron_math.h
@@ -86,6 +86,8 @@ float  vec2_dot(vec2_t a, vec2_t b);
 vec2_t vec2_nan();
 bool   vec2_isnan(vec2_t v);
 
+f32_array_t *vec3_to_f32_array(vec4_t v);
+
 vec4_t vec4_cross(vec4_t a, vec4_t b);
 vec4_t vec4_add(vec4_t a, vec4_t b);
 vec4_t vec4_fadd(vec4_t a, float x, float y, float z, float w);