Add FastNoiseLite / general noise overhaul

- replace OpenSimplexNoise

Co-authored-by: Cory Petkovsek <tinmanjuggernaut@users.noreply.github.com>

thirdparty/misc/open-simplex-noise-LICENSE

@@ -1,25 +0,0 @@
-This is free and unencumbered software released into the public domain.
-
-Anyone is free to copy, modify, publish, use, compile, sell, or
-distribute this software, either in source code form or as a compiled
-binary, for any purpose, commercial or non-commercial, and by any
-means.
-
-In jurisdictions that recognize copyright laws, the author or authors
-of this software dedicate any and all copyright interest in the
-software to the public domain. We make this dedication for the benefit
-of the public at large and to the detriment of our heirs and
-successors. We intend this dedication to be an overt act of
-relinquishment in perpetuity of all present and future rights to this
-software under copyright law.
-
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
-EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
-MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
-IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR
-OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
-ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
-OTHER DEALINGS IN THE SOFTWARE.
-
-For more information, please refer to <http://unlicense.org>
-

thirdparty/misc/open-simplex-noise-no-allocate.patch

@@ -1,133 +0,0 @@
-diff -u orig/open-simplex-noise.c misc/open-simplex-noise.c
---- orig/open-simplex-noise.c	2018-09-14 11:11:40.049810000 +0200
-+++ misc/open-simplex-noise.c	2018-09-14 11:09:39.726457000 +0200
-@@ -13,6 +13,11 @@
-  *   of any particular randomization library, so results
-  *   will be the same when ported to other languages.
-  */
-+
-+// -- GODOT start --
-+// Modified to work without allocating memory, also removed some unused function. 
-+// -- GODOT end --
-+
- #include <math.h>
- #include <stdlib.h>
- #include <stdint.h>
-@@ -34,11 +39,12 @@
- 	
- #define DEFAULT_SEED (0LL)
- 
--struct osn_context {
-+// -- GODOT start --
-+/*struct osn_context {
- 	int16_t *perm;
- 	int16_t *permGradIndex3D;
--};
--
-+};*/
-+// -- GODOT end --
- #define ARRAYSIZE(x) (sizeof((x)) / sizeof((x)[0]))
- 
- /* 
-@@ -126,7 +132,9 @@
- 	int xi = (int) x;
- 	return x < xi ? xi - 1 : xi;
- }
--	
-+
-+// -- GODOT start --
-+/*
- static int allocate_perm(struct osn_context *ctx, int nperm, int ngrad)
- {
- 	if (ctx->perm)
-@@ -154,18 +162,21 @@
- 	memcpy(ctx->perm, p, sizeof(*ctx->perm) * nelements);
- 		
- 	for (i = 0; i < 256; i++) {
--		/* Since 3D has 24 gradients, simple bitmask won't work, so precompute modulo array. */
-+		// Since 3D has 24 gradients, simple bitmask won't work, so precompute modulo array.
- 		ctx->permGradIndex3D[i] = (int16_t)((ctx->perm[i] % (ARRAYSIZE(gradients3D) / 3)) * 3);
- 	}
- 	return 0;
- }
-+*/
-+// -- GODOT end --
- 
- /*	
-  * Initializes using a permutation array generated from a 64-bit seed.
-  * Generates a proper permutation (i.e. doesn't merely perform N successive pair
-  * swaps on a base array).  Uses a simple 64-bit LCG.
-  */
--int open_simplex_noise(int64_t seed, struct osn_context **ctx)
-+// -- GODOT start --
-+int open_simplex_noise(int64_t seed, struct osn_context *ctx)
- {
- 	int rc;
- 	int16_t source[256];
-@@ -174,20 +185,9 @@
- 	int16_t *permGradIndex3D;
- 	int r;
- 
--	*ctx = (struct osn_context *) malloc(sizeof(**ctx));
--	if (!(*ctx))
--		return -ENOMEM;
--	(*ctx)->perm = NULL;
--	(*ctx)->permGradIndex3D = NULL;
--
--	rc = allocate_perm(*ctx, 256, 256);
--	if (rc) {
--		free(*ctx);
--		return rc;
--	}
--
--	perm = (*ctx)->perm;
--	permGradIndex3D = (*ctx)->permGradIndex3D;
-+	perm = ctx->perm;
-+	permGradIndex3D = ctx->permGradIndex3D;
-+// -- GODOT end --
- 
- 	for (i = 0; i < 256; i++)
- 		source[i] = (int16_t) i;
-@@ -206,6 +206,8 @@
- 	return 0;
- }
- 
-+// -- GODOT start --
-+/*
- void open_simplex_noise_free(struct osn_context *ctx)
- {
- 	if (!ctx)
-@@ -220,6 +222,8 @@
- 	}
- 	free(ctx);
- }
-+*/
-+// -- GODOT end --
- 	
- /* 2D OpenSimplex (Simplectic) Noise. */
- double open_simplex_noise2(struct osn_context *ctx, double x, double y) 
-diff -u orig/open-simplex-noise.h misc/open-simplex-noise.h
---- orig/open-simplex-noise.h	2018-09-14 11:11:19.659807000 +0200
-+++ misc/open-simplex-noise.h	2018-09-14 11:10:05.006460000 +0200
-@@ -35,11 +35,18 @@
- 	extern "C" {
- #endif
- 
--struct osn_context;
-+// -- GODOT start --
-+// Modified to work without allocating memory, also removed some unused function. 
- 
--int open_simplex_noise(int64_t seed, struct osn_context **ctx);
-+struct osn_context {
-+	int16_t perm[256];
-+	int16_t permGradIndex3D[256];
-+};
-+
-+int open_simplex_noise(int64_t seed, struct osn_context *ctx);
-+//int open_simplex_noise_init_perm(struct osn_context *ctx, int16_t p[], int nelements);
-+// -- GODOT end --
- void open_simplex_noise_free(struct osn_context *ctx);
--int open_simplex_noise_init_perm(struct osn_context *ctx, int16_t p[], int nelements);
- double open_simplex_noise2(struct osn_context *ctx, double x, double y);
- double open_simplex_noise3(struct osn_context *ctx, double x, double y, double z);
- double open_simplex_noise4(struct osn_context *ctx, double x, double y, double z, double w);

thirdparty/misc/open-simplex-noise.h

@@ -1,58 +0,0 @@
-#ifndef OPEN_SIMPLEX_NOISE_H__
-#define OPEN_SIMPLEX_NOISE_H__
-
-/*
- * OpenSimplex (Simplectic) Noise in C.
- * Ported to C from Kurt Spencer's java implementation by Stephen M. Cameron
- *
- * v1.1 (October 6, 2014) 
- * - Ported to C
- * 
- * v1.1 (October 5, 2014)
- * - Added 2D and 4D implementations.
- * - Proper gradient sets for all dimensions, from a
- *   dimensionally-generalizable scheme with an actual
- *   rhyme and reason behind it.
- * - Removed default permutation array in favor of
- *   default seed.
- * - Changed seed-based constructor to be independent
- *   of any particular randomization library, so results
- *   will be the same when ported to other languages.
- */
-
-#if ((__GNUC_STDC_INLINE__) || (__STDC_VERSION__ >= 199901L))
-	#include <stdint.h>
-	#define INLINE inline
-#elif (defined (_MSC_VER) || defined (__GNUC_GNU_INLINE__))
-	#include <stdint.h>
-	#define INLINE __inline
-#else 
-	/* ANSI C doesn't have inline or stdint.h. */
-	#define INLINE
-#endif
-
-#ifdef __cplusplus
-	extern "C" {
-#endif
-
-// -- GODOT start --
-// Modified to work without allocating memory, also removed some unused function. 
-
-struct osn_context {
-	int16_t perm[256];
-	int16_t permGradIndex3D[256];
-};
-
-int open_simplex_noise(int64_t seed, struct osn_context *ctx);
-//int open_simplex_noise_init_perm(struct osn_context *ctx, int16_t p[], int nelements);
-// -- GODOT end --
-void open_simplex_noise_free(struct osn_context *ctx);
-double open_simplex_noise2(const struct osn_context *ctx, double x, double y);
-double open_simplex_noise3(const struct osn_context *ctx, double x, double y, double z);
-double open_simplex_noise4(const struct osn_context *ctx, double x, double y, double z, double w);
-
-#ifdef __cplusplus
-	}
-#endif
-
-#endif