From 38da3627e741bda3fd365644553c68ccbc4f3166 Mon Sep 17 00:00:00 2001
From: John Alanbrook <john@pockle.world>
Date: Fri, 27 Jan 2023 18:06:16 +0000
Subject: [PATCH] splines

---
 Makefile                   |  2 +-
 source/engine/2dphysics.c  |  6 ++++
 source/engine/ffi.c        | 57 ++++++++++++++++++++++++++++++++++++++
 source/engine/tinyspline.h |  2 +-
 4 files changed, 65 insertions(+), 2 deletions(-)

diff --git a/Makefile b/Makefile
index fc33db01..c368c6e1 100755
--- a/Makefile
+++ b/Makefile
@@ -73,7 +73,7 @@ SEM = 0.0.1
 COM != git rev-parse --short HEAD
 VER = $(SEM)-$(COM)
 
-COMPILER_FLAGS = $(includeflag) $(QFLAGS) -MD $(WARNING_FLAGS) -DCP_USE_DOUBLES=0 -DVER=\"$(VER)\" -DINFO=\"$(INFO)\" -c $< -o $@
+COMPILER_FLAGS = $(includeflag) $(QFLAGS) -MD $(WARNING_FLAGS) -DCP_USE_DOUBLES=0 -DTINYSPLINE_FLOAT_PRECISION -DVER=\"$(VER)\" -DINFO=\"$(INFO)\" -c $< -o $@
 
 LIBPATH = -L$(BIN)
 
diff --git a/source/engine/2dphysics.c b/source/engine/2dphysics.c
index e728139b..ff3516f6 100644
--- a/source/engine/2dphysics.c
+++ b/source/engine/2dphysics.c
@@ -4,6 +4,7 @@
 #include <string.h>
 #include "mathc.h"
 #include "nuke.h"
+#include "debug.h"
 
 #include "debugdraw.h"
 #include "gameobject.h"
@@ -12,6 +13,8 @@
 #include "stb_ds.h"
 #include <assert.h>
 
+#include "tinyspline.h"
+
 #include "script.h"
 
 #include "log.h"
@@ -106,6 +109,9 @@ void init_phys2dshape(struct phys2d_shape *shape, int go, void *data)
     cpShapeSetCollisionType(shape->shape, go);
     cpShapeSetUserData(shape->shape, shape);
     phys2d_shape_apply(shape);
+
+
+
 }
 
 void phys2d_shape_del(struct phys2d_shape *shape)
diff --git a/source/engine/ffi.c b/source/engine/ffi.c
index 519ee6cd..c283f7f2 100644
--- a/source/engine/ffi.c
+++ b/source/engine/ffi.c
@@ -20,11 +20,13 @@
 #include "sound.h"
 #include "music.h"
 #include "level.h"
+#include "tinyspline.h"
 
 void duk_dump_stack(duk_context *duk)
 {
     duk_push_context_dump(duk);
     YughInfo("DUK STACK\n%s", duk_to_string(duk, -1));
+    duk_pop(duk);
 }
 
 struct color duk2color(duk_context *duk, int p)
@@ -47,9 +49,13 @@ cpVect duk2vec2(duk_context *duk, int p) {
 
     duk_get_prop_index(duk, p, 0);
     pos.x = duk_to_number(duk, -1);
+    duk_pop(duk);
+
     duk_get_prop_index(duk, p, 1);
     pos.y = duk_to_number(duk, -1);
 
+    duk_pop(duk);
+
     return pos;
 }
 
@@ -126,6 +132,56 @@ duk_ret_t duk_win_make(duk_context *duk) {
     return 1;
 }
 
+duk_ret_t duk_spline_cmd(duk_context *duk)
+{
+    tsBSpline spline;
+
+    int n = duk_get_length(duk, 4);
+    int d = duk_to_int(duk, 2);
+    cpVect points[n*d];
+
+    ts_bspline_new(n, d, duk_to_int(duk, 1), duk_to_int(duk, 3), &spline, NULL);
+
+
+
+      for (int i = 0; i < n; i++) {
+      duk_get_prop_index(duk, 4, i);
+
+      points[i] = duk2vec2(duk, -1);
+
+      duk_pop(duk);
+  }
+
+  ts_bspline_set_control_points(&spline, points, NULL);
+
+
+  int nsamples = duk_to_int(duk, 5);
+  cpVect samples[nsamples];
+  int rsamples;
+  ts_bspline_sample(&spline, nsamples, &samples, &rsamples, NULL);
+
+    int arridx = duk_push_array(duk);
+
+    duk_require_stack(duk, nsamples*3);
+
+    for (int i = 0; i < nsamples; i++) {
+        int pidx = duk_push_array(duk);
+
+
+            duk_push_number(duk, samples[i].x);
+            duk_put_prop_index(duk, pidx, 0);
+            duk_push_number(duk, samples[i].y);
+            duk_put_prop_index(duk, pidx, 1);
+           duk_put_prop_index(duk, arridx, i);
+    }
+
+    free(samples);
+    ts_bspline_free(&spline);
+
+
+return 1;
+}
+
 duk_ret_t duk_cmd(duk_context *duk) {
     int cmd = duk_to_int(duk, 0);
 
@@ -730,6 +786,7 @@ void ffi_load()
 
     DUK_FUNC(make_sprite, 3);
     DUK_FUNC(make_anim2d, 3);
+    DUK_FUNC(spline_cmd, 6);
     DUK_FUNC(make_box2d, 3);
     DUK_FUNC(cmd_box2d, DUK_VARARGS);
     DUK_FUNC(make_circle2d, 3);
diff --git a/source/engine/tinyspline.h b/source/engine/tinyspline.h
index 4452b340..44c94ea2 100644
--- a/source/engine/tinyspline.h
+++ b/source/engine/tinyspline.h
@@ -21,7 +21,7 @@
 #elif defined(SWIG)
 #define TS_DEPRECATED
 #else
-#warning "WARNING: TS_DEPRECATED is not supported by the compiler"
+#warning "WARNING: TS_DEPRECATED is not supported by compiler"
 #define TS_DEPRECATED
 #endif
 /*! @} */