[nostalgia/core] Move color types and functions into separate file

src/nostalgia/core/CMakeLists.txt

@@ -25,6 +25,7 @@ endif()
 
 install(
 	FILES
+		color.hpp
 		config.hpp
 		consts.hpp
 		context.hpp

src/nostalgia/core/color.hpp

@@ -0,0 +1,103 @@
+/*
+ * Copyright 2016 - 2021 gary@drinkingtea.net
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ */
+
+#pragma once
+
+#include <ox/std/types.hpp>
+#include <nostalgia/common/point.hpp>
+
+#include "context.hpp"
+
+namespace nostalgia::core {
+
+using Color16 = uint16_t;
+
+/**
+ * Nostalgia Core logically uses 16 bit colors, but must translate that to 32
+ * bit colors in some implementations.
+ */
+
+using Color32 = uint32_t;
+
+[[nodiscard]]
+constexpr Color32 toColor32(Color16 nc) noexcept {
+	Color32 r = static_cast<Color32>(((nc & 0b0000000000011111) >> 0) * 8);
+	Color32 g = static_cast<Color32>(((nc & 0b0000001111100000) >> 5) * 8);
+	Color32 b = static_cast<Color32>(((nc & 0b0111110000000000) >> 10) * 8);
+	Color32 a = 255;
+	return r | (g << 8) | (b << 16) | (a << 24);
+}
+
+
+[[nodiscard]]
+constexpr uint8_t red16(Color16 c) noexcept {
+	return c & 0b0000000000011111;
+}
+
+[[nodiscard]]
+constexpr uint8_t green16(Color16 c) noexcept {
+	return (c & 0b0000001111100000) >> 5;
+}
+
+[[nodiscard]]
+constexpr uint8_t blue16(Color16 c) noexcept {
+	return (c & 0b0111110000000000) >> 10;
+}
+
+[[nodiscard]]
+constexpr uint8_t alpha16(Color16 c) noexcept {
+	return c >> 15;
+}
+
+[[nodiscard]]
+constexpr uint8_t red32(Color16 c) noexcept {
+	return red16(c) * 8;
+}
+
+[[nodiscard]]
+constexpr uint8_t green32(Color16 c) noexcept {
+	return green16(c) * 8;
+}
+
+[[nodiscard]]
+constexpr uint8_t blue32(Color16 c) noexcept {
+	return blue16(c) * 8;
+}
+
+[[nodiscard]]
+constexpr uint8_t alpha32(Color16 c) noexcept {
+	return (c >> 15) * 255;
+}
+
+
+[[nodiscard]]
+constexpr uint8_t red32(Color32 c) noexcept {
+	return (c & 0x000000ff) >> 0;
+}
+
+[[nodiscard]]
+constexpr uint8_t green32(Color32 c) noexcept {
+	return (c & 0x0000ff00) >> 8;
+}
+
+[[nodiscard]]
+constexpr uint8_t blue32(Color32 c) noexcept {
+	return (c & 0x00ff0000) >> 16;
+}
+
+
+[[nodiscard]]
+constexpr Color16 color16(uint8_t r, uint8_t g, uint8_t b) {
+	return r | (g << 5) | (b << 10);
+}
+
+static_assert(color16(0, 31, 0) == 992);
+static_assert(color16(16, 31, 0) == 1008);
+static_assert(color16(16, 31, 8) == 9200);
+
+}

src/nostalgia/core/gfx.cpp

@@ -141,42 +141,4 @@ char charMap[128] = {
 	0,  // ~
 };
 
-Color32 toColor32(Color16 nc) noexcept {
-	Color32 r = static_cast<Color32>(((nc & 0b0000000000011111) >> 0) * 8);
-	Color32 g = static_cast<Color32>(((nc & 0b0000001111100000) >> 5) * 8);
-	Color32 b = static_cast<Color32>(((nc & 0b0111110000000000) >> 10) * 8);
-	Color32 a = 255;
-	return r | (g << 8) | (b << 16) | (a << 24);
-}
-
-
-uint8_t red32(Color32 c) noexcept {
-	return (c & 0x000000ff) >> 0;
-}
-
-uint8_t green32(Color32 c) noexcept {
-	return (c & 0x0000ff00) >> 8;
-}
-
-uint8_t blue32(Color32 c) noexcept {
-	return (c & 0x00ff0000) >> 16;
-}
-
-
-uint8_t red32(Color16 c) noexcept {
-	return red16(c) * 8;
-}
-
-uint8_t green32(Color16 c) noexcept {
-	return green16(c) * 8;
-}
-
-uint8_t blue32(Color16 c) noexcept {
-	return blue16(c) * 8;
-}
-
-static_assert(color16(0, 31, 0) == 992);
-static_assert(color16(16, 31, 0) == 1008);
-static_assert(color16(16, 31, 8) == 9200);
-
 }

src/nostalgia/core/gfx.hpp

@@ -11,6 +11,7 @@
 #include <ox/std/types.hpp>
 #include <nostalgia/common/point.hpp>
 
+#include "color.hpp"
 #include "context.hpp"
 
 namespace nostalgia::core {
@@ -22,14 +23,6 @@ enum class TileSheetSpace {
 	Sprite
 };
 
-using Color16 = uint16_t;
-
-/**
- * Nostalgia Core logically uses 16 bit colors, but must translate that to 32
- * bit colors in some implementations.
- */
-using Color32 = uint32_t;
-
 struct NostalgiaPalette {
 	static constexpr auto TypeName = "net.drinkingtea.nostalgia.core.NostalgiaPalette";
 	static constexpr auto Fields = 1;
@@ -110,45 +103,6 @@ ox::Error loadSpriteTileSheet(Context *ctx,
                               ox::FileAddress tilesheetAddr,
                               ox::FileAddress paletteAddr);
 
-[[nodiscard]] Color32 toColor32(Color16 nc) noexcept;
-
-[[nodiscard]] uint8_t red32(Color16 c) noexcept;
-
-[[nodiscard]] uint8_t green32(Color16 c) noexcept;
-
-[[nodiscard]] uint8_t blue32(Color16 c) noexcept;
-
-[[nodiscard]] constexpr uint8_t alpha32(Color16 c) noexcept {
-	return (c >> 15) * 255;
-}
-
-
-[[nodiscard]] constexpr Color16 color16(uint8_t r, uint8_t g, uint8_t b) {
-	return r | (g << 5) | (b << 10);
-}
-
-[[nodiscard]] uint8_t red32(Color32 c) noexcept;
-
-[[nodiscard]] uint8_t green32(Color32 c) noexcept;
-
-[[nodiscard]] uint8_t blue32(Color32 c) noexcept;
-
-[[nodiscard]] constexpr uint8_t red16(Color16 c) noexcept {
-	return c & 0b0000000000011111;
-}
-
-[[nodiscard]] constexpr uint8_t green16(Color16 c) noexcept {
-	return (c & 0b0000001111100000) >> 5;
-}
-
-[[nodiscard]] constexpr uint8_t blue16(Color16 c) noexcept {
-	return (c & 0b0111110000000000) >> 10;
-}
-
-[[nodiscard]] constexpr uint8_t alpha16(Color16 c) noexcept {
-	return c >> 15;
-}
-
 void puts(Context *ctx, int column, int row, const char *str);
 
 void setTile(Context *ctx, int layer, int column, int row, uint8_t tile);