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RenderBuildingItems.java
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RenderBuildingItems.java
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/**
* Copyright (c) 2011-2015, SpaceToad and the BuildCraft Team
* http://www.mod-buildcraft.com
*
* BuildCraft is distributed under the terms of the Minecraft Mod Public
* License 1.0, or MMPL. Please check the contents of the license located in
* http://www.mod-buildcraft.com/MMPL-1.0.txt
*/
package buildcraft.core.render;
import org.lwjgl.opengl.GL11;
import net.minecraft.client.renderer.entity.RenderItem;
import net.minecraft.client.renderer.entity.RenderManager;
import net.minecraft.entity.item.EntityItem;
import net.minecraft.item.Item;
import net.minecraft.item.ItemStack;
import net.minecraft.tileentity.TileEntity;
import buildcraft.BuildCraftBuilders;
import buildcraft.core.StackAtPosition;
import buildcraft.core.builders.BuildingItem;
import buildcraft.core.builders.IBuildingItemsProvider;
public class RenderBuildingItems {
private final EntityItem dummyEntityItem = new EntityItem(null);
private final RenderItem customRenderItem;
// optimization - buildToolBlocks are the most often appearing ones
private Item buildToolItem;
private int buildToolGlList;
public RenderBuildingItems () {
customRenderItem = new RenderItem() {
@Override
public boolean shouldBob() {
return false;
}
@Override
public boolean shouldSpreadItems() {
return false;
}
};
customRenderItem.setRenderManager(RenderManager.instance);
}
public void render(TileEntity tile, double x, double y, double z) {
IBuildingItemsProvider provider = (IBuildingItemsProvider) tile;
GL11.glPushMatrix();
GL11.glTranslated(x, y, z);
GL11.glTranslated(-tile.xCoord, -tile.yCoord, -tile.zCoord);
if (provider.getBuilders() != null) {
for (BuildingItem i : provider.getBuilders()) {
doRenderItem(i, 1.0F);
}
}
GL11.glPopMatrix();
}
public void renderToList(ItemStack stack, int list) {
GL11.glNewList(list, GL11.GL_COMPILE_AND_EXECUTE);
float renderScale = 0.7f;
GL11.glScalef(renderScale, renderScale, renderScale);
dummyEntityItem.setEntityItemStack(stack);
customRenderItem.doRender(dummyEntityItem, 0, 0, 0, 0, 0);
GL11.glEndList();
}
private void doRenderItem(BuildingItem i, float light) {
if (buildToolItem == null) {
buildToolItem = Item.getItemFromBlock(BuildCraftBuilders.buildToolBlock);
buildToolGlList = GL11.glGenLists(1);
renderToList(new ItemStack(buildToolItem), buildToolGlList);
}
if (i == null) {
return;
}
i.displayUpdate();
for (StackAtPosition s : i.getStacks()) {
if (s.display) {
GL11.glPushMatrix();
GL11.glTranslatef((float) s.pos.x, (float) s.pos.y + 0.25F,
(float) s.pos.z);
if (s.stack.getItem() == buildToolItem) {
GL11.glCallList(buildToolGlList);
} else if (!s.generatedListId) {
s.generatedListId = true;
s.glListId = GL11.glGenLists(1);
renderToList(s.stack, s.glListId);
} else {
GL11.glCallList(s.glListId);
}
GL11.glPopMatrix();
}
}
}
}