buildcraft.core.render.RenderLaser.java Source code

Introduction

Here is the source code for buildcraft.core.render.RenderLaser.java

Source

/**
 * Copyright (c) 2011-2014, 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 java.util.Date;

import org.lwjgl.opengl.GL11;

import net.minecraft.client.model.ModelBase;
import net.minecraft.client.model.ModelRenderer;
import net.minecraft.client.renderer.GLAllocation;
import net.minecraft.client.renderer.entity.Render;
import net.minecraft.client.renderer.texture.TextureManager;
import net.minecraft.entity.Entity;
import net.minecraft.util.ResourceLocation;

import buildcraft.api.core.Position;
import buildcraft.core.EntityLaser;
import buildcraft.core.LaserData;
import buildcraft.core.render.RenderEntityBlock.RenderInfo;

public class RenderLaser extends Render {

    public static final float STEP = 0.04F;

    protected static ModelBase model = new ModelBase() {
    };
    private static ModelRenderer[] box;

    private static int[][] scaledBoxes;

    public RenderLaser() {
    }

    private static ModelRenderer getBox(int index) {
        if (box == null) {
            box = new ModelRenderer[40];

            for (int j = 0; j < box.length; ++j) {
                box[j] = new ModelRenderer(model, box.length - j, 0);
                box[j].addBox(0, -0.5F, -0.5F, 16, 1, 1);
                box[j].rotationPointX = 0;
                box[j].rotationPointY = 0;
                box[j].rotationPointZ = 0;
            }
        }

        return box[index];
    }

    private static void initScaledBoxes() {
        if (scaledBoxes == null) {
            scaledBoxes = new int[100][20];

            for (int size = 0; size < 100; ++size) {
                for (int i = 0; i < 20; ++i) {
                    scaledBoxes[size][i] = GLAllocation.generateDisplayLists(1);
                    GL11.glNewList(scaledBoxes[size][i], GL11.GL_COMPILE);

                    RenderInfo block = new RenderInfo();

                    float minSize = 0.2F * size / 100F;
                    float maxSize = 0.4F * size / 100F;
                    //float minSize = 0.1F;
                    //float maxSize = 0.2F;

                    float range = maxSize - minSize;

                    float diff = (float) (Math.cos(i / 20F * 2 * Math.PI) * range / 2F);

                    block.minX = 0.0;
                    block.minY = -maxSize / 2F + diff;
                    block.minZ = -maxSize / 2F + diff;

                    block.maxX = STEP;
                    block.maxY = maxSize / 2F - diff;
                    block.maxZ = maxSize / 2F - diff;

                    RenderEntityBlock.INSTANCE.renderBlock(block, null, 0, 0, 0, false, true);

                    GL11.glEndList();
                }
            }
        }
    }

    @Override
    public void doRender(Entity entity, double x, double y, double z, float f, float f1) {
        doRender((EntityLaser) entity, x, y, z, f, f1);
        //entity.setAngles(45, 180);
    }

    private void doRender(EntityLaser laser, double x, double y, double z, float f, float f1) {
        if (!laser.isVisible() || laser.getTexture() == null) {
            return;
        }

        GL11.glPushMatrix();
        GL11.glPushAttrib(GL11.GL_ENABLE_BIT);
        GL11.glDisable(GL11.GL_LIGHTING);

        Position offset = laser.renderOffset();
        GL11.glTranslated(x + offset.x, y + offset.y, z + offset.z);

        // FIXME: WARNING! not using getBox (laser) will kill laser movement.
        // we can use some other method for the animation though.
        doRenderLaser(renderManager.renderEngine, laser.data, laser.getTexture());

        GL11.glPopAttrib();
        GL11.glPopMatrix();
    }

    public static void doRenderLaserWave(TextureManager textureManager, LaserData laser, ResourceLocation texture) {
        if (!laser.isVisible || texture == null) {
            return;
        }

        GL11.glPushMatrix();

        laser.update();

        GL11.glRotatef((float) laser.angleZ, 0, 1, 0);
        GL11.glRotatef((float) laser.angleY, 0, 0, 1);

        textureManager.bindTexture(texture);

        float factor = (float) (1.0 / 16.0);

        int indexList = 0;

        initScaledBoxes();

        double x0 = 0;
        double x1 = laser.wavePosition;
        double x2 = x1 + scaledBoxes[0].length * STEP;
        double x3 = laser.renderSize;

        doRenderLaserLine(x1, laser.laserTexAnimation);

        for (double i = x1; i <= x2 && i <= laser.renderSize; i += STEP) {
            GL11.glCallList(scaledBoxes[(int) (laser.waveSize * 99F)][indexList]);
            indexList = (indexList + 1) % scaledBoxes[0].length;
            GL11.glTranslated(STEP, 0, 0);
        }

        if (x2 < x3) {
            doRenderLaserLine(x3 - x2, laser.laserTexAnimation);
        }

        GL11.glPopMatrix();
    }

    public static void doRenderLaser(TextureManager textureManager, LaserData laser, ResourceLocation texture) {
        if (!laser.isVisible || texture == null) {
            return;
        }

        GL11.glPushMatrix();

        GL11.glTranslated(laser.head.x, laser.head.y, laser.head.z);
        laser.update();

        GL11.glRotatef((float) laser.angleZ, 0, 1, 0);
        GL11.glRotatef((float) laser.angleY, 0, 0, 1);

        textureManager.bindTexture(texture);

        float factor = (float) (1.0 / 16.0);

        float lasti = 0;

        int indexList = (int) ((new Date().getTime() / 100) % 20);

        initScaledBoxes();

        doRenderLaserLine(laser.renderSize, laser.laserTexAnimation);

        GL11.glPopMatrix();
    }

    private static void doRenderLaserLine(double len, int texId) {
        float lasti = 0;

        if (len - 1 > 0) {
            for (float i = 0; i <= len - 1; i += 1) {
                getBox(texId).render(1F / 16F);
                GL11.glTranslated(1, 0, 0);
                lasti = i;
            }
            lasti++;
        }

        GL11.glPushMatrix();
        GL11.glScalef((float) len - lasti, 1, 1);
        getBox(texId).render(1F / 16F);
        GL11.glPopMatrix();

        GL11.glTranslated((float) (len - lasti), 0, 0);
    }

    @Override
    protected ResourceLocation getEntityTexture(Entity entity) {
        return ((EntityLaser) entity).getTexture();
    }
}