redpower/src/main/java/com/eloraam/redpower/compat/RenderBlueEngine.java

package com.eloraam.redpower.compat;

import com.eloraam.redpower.core.Matrix3;
import com.eloraam.redpower.core.RenderContext;
import com.eloraam.redpower.core.RenderCustomBlock;
import com.eloraam.redpower.core.RenderModel;
import net.minecraft.block.Block;
import net.minecraft.client.renderer.Tessellator;
import net.minecraft.item.ItemStack;
import net.minecraft.tileentity.TileEntity;
import net.minecraft.util.ResourceLocation;

public class RenderBlueEngine extends RenderCustomBlock {
    private static ResourceLocation res
        = new ResourceLocation("rpcompat", "models/compat1.png");
    protected RenderModel modelBase
        = RenderModel.loadModel("rpcompat:models/btengine1.obj").scale(0.0625);
    protected RenderModel modelSlide
        = RenderModel.loadModel("rpcompat:models/btengine2.obj").scale(0.0625);
    protected RenderModel modelGear
        = RenderModel.loadModel("rpcompat:models/btengine3.obj").scale(0.0625);
    protected RenderContext context = new RenderContext();

    public RenderBlueEngine(Block bl) {
        super(bl);
    }

    public void renderTileEntityAt(
        TileEntity tile, double x, double y, double z, float partialTicks
    ) {
        TileBlueEngine tb = (TileBlueEngine) tile;
        if (tb != null) {
            Tessellator tess = Tessellator.instance;
            this.context.setDefaults();
            this.context.setPos(x, y, z);
            this.context.setOrientation(tb.Rotation, 0);
            this.context.readGlobalLights(
                tb.getWorldObj(), tb.xCoord, tb.yCoord, tb.zCoord
            );
            this.context.setBrightness(super.getMixedBrightness(tb));
            this.context.bindTexture(res);
            this.context.bindModelOffset(this.modelBase, 0.5, 0.5, 0.5);
            tess.startDrawingQuads();
            this.context.renderModelGroup(0, 0);
            this.context.renderModelGroup(1, tb.Charged ? (tb.Active ? 3 : 2) : 1);
            tess.draw();
            int lv = tb.getWorldObj().getLightBrightnessForSkyBlocks(
                tb.xCoord, tb.yCoord, tb.zCoord, 0
            );
            tess.startDrawingQuads();
            tess.setBrightness(lv);
            if (tb.Active) {
                partialTicks += (float) tb.PumpTick;
                if (tb.PumpSpeed > 0) {
                    partialTicks /= (float) tb.PumpSpeed;
                }
            } else {
                partialTicks = 0.0F;
            }

            this.context.useNormal = true;
            this.context.setPos(x, y, z);
            this.context.setOrientation(tb.Rotation, 0);
            this.context.setRelPos(
                0.0, 0.1875 * (0.5 - 0.5 * Math.cos(Math.PI * (double) partialTicks)), 0.0
            );
            this.context.bindModelOffset(this.modelSlide, 0.5, 0.5, 0.5);
            this.context.renderModelGroup(0, 0);
            this.context.basis = Matrix3.getRotY(Math.PI / 2 * (double) partialTicks)
                                     .multiply(this.context.basis);
            this.context.setRelPos(0.5, 0.34375, 0.5);
            this.context.bindModelOffset(this.modelGear, 0.5, 0.5, 0.5);
            this.context.renderModelGroup(0, 0);
            tess.draw();
        }
    }

    @Override
    public void renderItem(ItemRenderType type, ItemStack item, Object... data) {
        super.block.setBlockBoundsForItemRender();
        this.context.setDefaults();
        if (type == ItemRenderType.INVENTORY) {
            this.context.setPos(-0.5, -0.5, -0.5);
        } else {
            this.context.setPos(0.0, 0.0, 0.0);
        }

        this.context.bindTexture(res);
        Tessellator tess = Tessellator.instance;
        tess.startDrawingQuads();
        this.context.useNormal = true;
        this.context.bindModelOffset(this.modelBase, 0.5, 0.5, 0.5);
        this.context.renderModelGroup(0, 0);
        this.context.renderModelGroup(1, 1);
        this.context.bindModelOffset(this.modelSlide, 0.5, 0.5, 0.5);
        this.context.renderModelGroup(0, 0);
        this.context.setPos(0.0, -0.15625, 0.0);
        this.context.bindModel(this.modelGear);
        this.context.renderModelGroup(0, 0);
        this.context.useNormal = false;
        tess.draw();
    }
}