first commit

Minecraft.Client/PistonPieceRenderer.cpp

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+#include "stdafx.h"
+#include "PistonPieceRenderer.h"
+#include "Tesselator.h"
+#include "Lighting.h"
+#include "TileRenderer.h"
+#include "..\Minecraft.World\net.minecraft.world.level.h"
+#include "..\Minecraft.World\PistonPieceEntity.h"
+#include "..\Minecraft.World\net.minecraft.world.level.tile.h"
+
+PistonPieceRenderer::PistonPieceRenderer()
+{
+	tileRenderer = NULL;
+}
+
+void PistonPieceRenderer::render(shared_ptr<TileEntity> _entity, double x, double y, double z, float a, bool setColor, float alpha, bool useCompiled)
+{
+	// 4J - dynamic cast required because we aren't using templates/generics in our version
+	shared_ptr<PistonPieceEntity> entity = dynamic_pointer_cast<PistonPieceEntity>(_entity);
+
+    Tile *tile = Tile::tiles[entity->getId()];
+    if (tile != NULL && entity->getProgress(a) <= 1)	// 4J - changed condition from < to <= as our chunk update is async to main thread and so we can have to render these with progress of 1
+	{
+        Tesselator *t = Tesselator::getInstance();
+        bindTexture(TN_TERRAIN);
+
+        Lighting::turnOff();
+		glColor4f(1, 1, 1, 1);	// 4J added - this wouldn't be needed in real opengl as the block render has vertex colours and so this isn't use, but our pretend gl always modulates with this
+
+        glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
+        glEnable(GL_BLEND);
+        glDisable(GL_CULL_FACE);
+
+        t->begin();
+
+        t->offset((float) x - entity->x + entity->getXOff(a), (float) y - entity->y + entity->getYOff(a), (float) z - entity->z + entity->getZOff(a));
+        t->color(1, 1, 1);
+        if (tile == Tile::pistonExtension && entity->getProgress(a) < 0.5f)
+		{
+            // extending arms may appear through the base block
+            tileRenderer->tesselatePistonArmNoCulling(tile, entity->x, entity->y, entity->z, false, entity->getData());
+        }
+		else if (entity->isSourcePiston() && !entity->isExtending())
+		{
+            // special case for withdrawing the arm back into the base
+            Tile::pistonExtension->setOverrideTopTexture(((PistonBaseTile *) tile)->getPlatformTexture());
+            tileRenderer->tesselatePistonArmNoCulling(Tile::pistonExtension, entity->x, entity->y, entity->z, entity->getProgress(a) < 0.5f, entity->getData());
+            Tile::pistonExtension->clearOverrideTopTexture();
+
+            t->offset((float) x - entity->x, (float) y - entity->y, (float) z - entity->z);
+            tileRenderer->tesselatePistonBaseForceExtended(tile, entity->x, entity->y, entity->z, entity->getData());
+        }
+		else
+		{
+            tileRenderer->tesselateInWorldNoCulling(tile, entity->x, entity->y, entity->z, entity->getData(), entity);
+        }
+        t->offset(0, 0, 0);
+        t->end();
+
+        Lighting::turnOn();
+    }
+
+}
+	
+void PistonPieceRenderer::onNewLevel(Level *level)
+{
+	delete tileRenderer;
+	tileRenderer = new TileRenderer(level);
+}