migrate ALMOST everything from source tree into client

source/client/renderer/RenderList.cpp

@@ -0,0 +1,126 @@
+/********************************************************************
+	Minecraft: Pocket Edition - Decompilation Project
+	Copyright (C) 2023 iProgramInCpp
+	
+	The following code is licensed under the BSD 1 clause license.
+	SPDX-License-Identifier: BSD-1-Clause
+ ********************************************************************/
+
+#include "RenderList.hpp"
+#include "Tesselator.hpp"
+
+constexpr int C_MAX_RENDERS = 3072;
+
+RenderList::RenderList()
+{
+	field_C = new int[C_MAX_RENDERS];
+	field_10 = new RenderChunk[C_MAX_RENDERS];
+}
+
+RenderList::~RenderList()
+{
+	if (field_C)
+		delete[] field_C;
+
+	if (field_10)
+		delete[] field_10;
+}
+
+void RenderList::add(int x)
+{
+	// @BUG: If too many chunks are rendered, this has the potential to overflow.
+#ifndef ORIGINAL_CODE
+	if (field_14 == C_MAX_RENDERS)
+	{
+		render();
+		init(m_posX, m_posY, m_posZ);
+		field_1C = 0;
+		field_19 = false;
+	}
+#endif
+
+	field_C[field_14] = x;
+
+	if (field_14 == C_MAX_RENDERS)
+		render();
+}
+
+void RenderList::addR(const RenderChunk& rc)
+{
+	// @BUG: If too many chunks are rendered, this has the potential to overflow.
+#ifndef ORIGINAL_CODE
+	if (field_14 == C_MAX_RENDERS)
+	{
+		render();
+		init(m_posX, m_posY, m_posZ);
+		field_1C = 0;
+		field_19 = false;
+	}
+#endif
+
+	field_10[field_14] = rc;
+}
+
+void RenderList::clear()
+{
+	field_18 = false;
+	field_19 = false;
+}
+
+void RenderList::init(float x, float y, float z)
+{
+	m_posX = x;
+	m_posY = y;
+	m_posZ = z;
+	field_14 = 0;
+	field_18 = true;
+}
+
+void RenderList::render()
+{
+	if (!field_18) return;
+
+	if (!field_19)
+	{
+		field_19 = true;
+		field_1C = field_14;
+		field_14 = 0;
+	}
+
+	if (field_14 < field_1C)
+	{
+		glPushMatrix();
+		glTranslatef(-m_posX, -m_posY, -m_posZ);
+		renderChunks();
+		glPopMatrix();
+	}
+}
+
+void RenderList::renderChunks()
+{
+	glEnableClientState(GL_VERTEX_ARRAY);
+	glEnableClientState(GL_COLOR_ARRAY);
+	glEnableClientState(GL_TEXTURE_COORD_ARRAY);
+
+	if (field_1C > 0)
+	{
+		for (int i = 0; i < field_1C; i++)
+		{
+			RenderChunk& chk = field_10[i];
+			glPushMatrix();
+
+			glTranslatef(chk.field_C, chk.field_10, chk.field_14);
+			xglBindBuffer(GL_ARRAY_BUFFER, chk.field_0);
+			glVertexPointer  (3, GL_FLOAT,         sizeof(Tesselator::Vertex), (void*)offsetof(Tesselator::Vertex, m_x));
+			glTexCoordPointer(2, GL_FLOAT,         sizeof(Tesselator::Vertex), (void*)offsetof(Tesselator::Vertex, m_u));
+			glColorPointer   (4, GL_UNSIGNED_BYTE, sizeof(Tesselator::Vertex), (void*)offsetof(Tesselator::Vertex, m_color));
+			glDrawArrays(GL_TRIANGLES, 0, chk.field_4);
+
+			glPopMatrix();
+		}
+	}
+
+	glDisableClientState(GL_VERTEX_ARRAY);
+	glDisableClientState(GL_COLOR_ARRAY);
+	glDisableClientState(GL_TEXTURE_COORD_ARRAY);
+}