first commit

Minecraft.Client/CompassTexture.cpp

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+#include "stdafx.h"
+#include "Minecraft.h"
+#include "..\Minecraft.World\net.minecraft.world.level.h"
+#include "..\Minecraft.World\net.minecraft.world.level.dimension.h"
+#include "MultiplayerLocalPlayer.h"
+#include "..\Minecraft.World\JavaMath.h"
+#include "Texture.h"
+#include "CompassTexture.h"
+
+CompassTexture *CompassTexture::instance = NULL;
+
+CompassTexture::CompassTexture() : StitchedTexture(L"compass")
+{
+	instance = this;
+
+	m_dataTexture = NULL;
+	m_iPad = XUSER_INDEX_ANY;
+
+	rot = rota = 0.0;
+}
+
+CompassTexture::CompassTexture(int iPad, CompassTexture *dataTexture) : StitchedTexture(L"compass")
+{
+	m_dataTexture = dataTexture;
+	m_iPad = iPad;
+
+	rot = rota = 0.0;
+}
+
+void CompassTexture::cycleFrames()
+{
+	Minecraft *mc = Minecraft::GetInstance();
+
+	if (m_iPad >= 0 && m_iPad < XUSER_MAX_COUNT && mc->level != NULL && mc->localplayers[m_iPad] != NULL)
+	{
+		updateFromPosition(mc->localplayers[m_iPad]->level, mc->localplayers[m_iPad]->x, mc->localplayers[m_iPad]->z, mc->localplayers[m_iPad]->yRot, false, false);
+	}
+	else
+	{
+		frame = 1;
+		updateFromPosition(NULL, 0, 0, 0, false, true);
+	}
+}
+
+void CompassTexture::updateFromPosition(Level *level, double x, double z, double yRot, bool noNeedle, bool instant)
+{
+	double rott = 0;
+	if (level != NULL && !noNeedle)
+	{
+		Pos *spawnPos = level->getSharedSpawnPos();
+		double xa = spawnPos->x - x;
+		double za = spawnPos->z - z;
+		delete spawnPos;
+		yRot = (int)yRot % 360;
+		rott = -((yRot - 90) * PI / 180 - atan2(za, xa));
+		if (!level->dimension->isNaturalDimension())
+		{
+			rott = Math::random() * PI * 2;
+		}
+	}
+
+	if (instant)
+	{
+		rot = rott;
+	}
+	else
+	{
+		double rotd = rott - rot;
+		while (rotd < -PI)
+			rotd += PI * 2;
+		while (rotd >= PI)
+			rotd -= PI * 2;
+		if (rotd < -1) rotd = -1;
+		if (rotd > 1) rotd = 1;
+		rota += rotd * 0.1;
+		rota *= 0.8;
+		rot += rota;
+	}
+
+	// 4J Stu - We share data with another texture
+	if(m_dataTexture != NULL)
+	{
+		int newFrame = (int) (((rot / (PI * 2)) + 1.0) * m_dataTexture->frames->size()) % m_dataTexture->frames->size();
+		while (newFrame < 0)
+		{
+			newFrame = (newFrame + m_dataTexture->frames->size()) % m_dataTexture->frames->size();
+		}
+		if (newFrame != frame)
+		{
+			frame = newFrame;
+			m_dataTexture->source->blit(this->x, this->y, m_dataTexture->frames->at(this->frame), rotated);
+		}
+	}
+	else
+	{
+		int newFrame = (int) (((rot / (PI * 2)) + 1.0) * frames->size()) % frames->size();
+		while (newFrame < 0)
+		{
+			newFrame = (newFrame + frames->size()) % frames->size();
+		}
+		if (newFrame != frame)
+		{
+			frame = newFrame;
+			source->blit(this->x, this->y, frames->at(this->frame), rotated);
+		}
+	}
+}
+
+int CompassTexture::getSourceWidth() const
+{
+	return source->getWidth();
+}
+
+int CompassTexture::getSourceHeight() const
+{
+	return source->getHeight();
+}
+
+int CompassTexture::getFrames()
+{
+	if(m_dataTexture == NULL)
+	{
+		return StitchedTexture::getFrames();
+	}
+	else
+	{
+		return m_dataTexture->getFrames();
+	}
+}
+
+void CompassTexture::freeFrameTextures()
+{
+	if(m_dataTexture == NULL)
+	{
+		StitchedTexture::freeFrameTextures();
+	}
+}
+
+bool CompassTexture::hasOwnData()
+{
+	return m_dataTexture == NULL;
+}