From 5f6ef2a21427fc32c7b12818bec3587f99e77701 Mon Sep 17 00:00:00 2001
From: "Jasper St. Pierre" <jstpierre@mecheye.net>
Date: Sat, 13 Jul 2024 16:57:20 -0700
Subject: [PATCH] c_rnd

---
 include/SSystem/SComponent/c_rnd.h |  8 ++------
 src/d/d_drawlist.cpp               | 27 ++++++++++++++++++++++++++-
 2 files changed, 28 insertions(+), 7 deletions(-)

diff --git a/include/SSystem/SComponent/c_rnd.h b/include/SSystem/SComponent/c_rnd.h
index 01a735142..dba7a0d99 100644
--- a/include/SSystem/SComponent/c_rnd.h
+++ b/include/SSystem/SComponent/c_rnd.h
@@ -8,12 +8,8 @@ struct cM_rnd_c {
     /* 0x4 */ int m4;
     /* 0x8 */ int m8;
 
-    void init(int a, int b, int c) {
-        m0 = a;
-        m4 = b;
-        m8 = c;
-    }
-    int get();
+    void init(int a, int b, int c);
+    f32 get();
     f32 getF(f32);
     f32 getFX(f32);
     f32 getValue(f32 min, f32 max);
diff --git a/src/d/d_drawlist.cpp b/src/d/d_drawlist.cpp
index c102c4d73..f5bb5b9ec 100644
--- a/src/d/d_drawlist.cpp
+++ b/src/d/d_drawlist.cpp
@@ -690,6 +690,31 @@ void dDlst_2D_c::draw() {
     mPicture.draw(mX, mY, false, false, false);
 }
 
+void cM_rnd_c::init(int a, int b, int c) {
+    m0 = a;
+    m4 = b;
+    m8 = c;
+}
+
+f32 cM_rnd_c::get() {
+    m0 = (m0 * 171) % 30269;
+    m4 = (m4 * 172) % 30307;
+    m8 = (m8 * 170) % 30323;
+    return fabsf(fmod((m0 / 30269.0f) + (m4 / 30307.0f) + (m8 / 30323.0f), 1.0f));
+}
+
+f32 cM_rnd_c::getF(f32 m) {
+    return get() * m;
+}
+
+f32 cM_rnd_c::getFX(f32 m) {
+    return m * (get() - 0.5f) * 2.0f;
+}
+
+f32 cM_rnd_c::getValue(f32 min, f32 range) {
+    return min + getF(range);
+}
+
 /* 80082424-80082794       .text draw__18dDlst_effectLine_cFv */
 void dDlst_effectLine_c::draw() {
     GXSetVtxAttrFmt(GX_VTXFMT0, GX_VA_POS, GX_POS_XYZ, GX_F32, 0);
@@ -1518,7 +1543,7 @@ int psdRealCallBack(cBgS_ShdwDraw* shdw, cBgD_Vtx_t* pVtx, int v0, int v1, int v
     const cXyz* normal = tri->GetNP();
     if (shdwDrawPoly->getLightVec()->inprod(*normal) < -0.2f) {
         cXyz* center = shdwDrawPoly->getCenter();
-        if (normal->x * center->x + normal->y * center->y + normal->z * center->z + tri->GetD() > -90.f) {
+        if (normal->x * center->x + normal->y * center->y + normal->z * center->z + tri->GetD() > -50.f) {
             const cXyz* min = shdwDrawPoly->GetBndP()->GetMinP();
             const cXyz* max = shdwDrawPoly->GetBndP()->GetMaxP();
             cBgD_Vtx_t* vert1 = pVtx + v0;