That's one heck of a commit you've got there...
I may have got a bit behind with version control. A lot behind, in fact. Maybe I'll go back and split this sometime - then again, I probably won't. But hey, at least it's here!
This commit is contained in:
Electroblob77
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package electroblob.wizardry.client.particle;
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import electroblob.wizardry.Wizardry;
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import net.minecraft.client.Minecraft;
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import net.minecraft.client.renderer.BufferBuilder;
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import net.minecraft.client.renderer.GlStateManager;
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import net.minecraft.client.renderer.OpenGlHelper;
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import net.minecraft.client.renderer.Tessellator;
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import net.minecraft.client.renderer.texture.TextureAtlasSprite;
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import net.minecraft.client.renderer.vertex.DefaultVertexFormats;
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import net.minecraft.entity.Entity;
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import net.minecraft.util.ResourceLocation;
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import net.minecraft.util.math.MathHelper;
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import net.minecraft.world.World;
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import net.minecraftforge.client.event.TextureStitchEvent;
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import net.minecraftforge.fml.common.Mod;
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import net.minecraftforge.fml.common.eventhandler.SubscribeEvent;
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import net.minecraftforge.fml.relauncher.Side;
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import org.lwjgl.opengl.GL11;
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//@SideOnly(Side.CLIENT)
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@Mod.EventBusSubscriber(Side.CLIENT)
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public class ParticleVine extends ParticleTargeted {
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/** Half the width of the vine. */
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private static final float THICKNESS = 0.02f;
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private static final float LEAF_SPACING = 0.5f;
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private static final float SEGMENT_LENGTH = 1;
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private static final ResourceLocation STEM_TEXTURE = new ResourceLocation(Wizardry.MODID, "particle/vine");
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private static final ResourceLocation[] LEAF_TEXTURES = generateTextures("vine_leaf", 5);
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public ParticleVine(World world, double x, double y, double z){
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super(world, x, y, z, STEM_TEXTURE);
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//this.setRBGColorF(1, 1, 1);
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this.setMaxAge(0);
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this.particleScale = 1;
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this.setRBGColorF(0.2f, 0.65f, 0f);
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}
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@Override
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public void renderParticle(BufferBuilder buffer, Entity viewer, float partialTicks, float rotationX, float rotationZ, float rotationYZ, float rotationXY, float rotationXZ){
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// When using FX layer 1 the BufferBuilder is already drawing... but in the wrong mode :/
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Tessellator.getInstance().draw();
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super.renderParticle(buffer, viewer, partialTicks, rotationX, rotationZ, rotationYZ, rotationXY, rotationXZ);
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buffer.begin(GL11.GL_QUADS, DefaultVertexFormats.PARTICLE_POSITION_TEX_COLOR_LMAP);
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}
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@Override
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protected void draw(Tessellator tessellator, double length, float partialTicks){
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random.setSeed(seed); // Reset the random so we get the same sequence of numbers each frame
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float scale = this.particleScale;
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BufferBuilder buffer = tessellator.getBuffer();
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GlStateManager.disableLighting();
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OpenGlHelper.setLightmapTextureCoords(OpenGlHelper.lightmapTexUnit, 240f, 240f);
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// Hmmmm we can't get the texture to tile using OpenGL texture space because it's on a sprite sheet...
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// Solution: Draw loads of boxes. Simple!
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// (Since there aren't going to be that many of these particles around we could have not used sprite sheets
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// and done the OpenGL texture space thing, but this is kinda easier)
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// Everything is drawn back-to-front so it looks like the vine is growing from the origin, not the endpoint
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int i = 0;
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while(i + SEGMENT_LENGTH < length){
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drawShearedBox(tessellator, 0, 0, length-i, 0, 0, length-i-SEGMENT_LENGTH, THICKNESS * scale,
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particleRed, particleGreen, particleBlue, particleAlpha);
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i += SEGMENT_LENGTH;
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}
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drawShearedBox(tessellator, 0, 0, length-i, 0, 0, 0, THICKNESS * scale,
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particleRed, particleGreen, particleBlue, particleAlpha);
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for(double l=length; l>0; l-=LEAF_SPACING){
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GlStateManager.pushMatrix();
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GlStateManager.rotate(random.nextInt(4) * 90, 0, 0, 1);
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buffer.begin(GL11.GL_QUADS, DefaultVertexFormats.POSITION_TEX_COLOR);
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TextureAtlasSprite leaf = Minecraft.getMinecraft().getTextureMapBlocks().getAtlasSprite(
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LEAF_TEXTURES[random.nextInt(LEAF_TEXTURES.length)].toString());
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float w = 16 * THICKNESS * scale;
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float u1 = leaf.getMinU();
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float u2 = leaf.getMaxU();
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float v1 = leaf.getMinV();
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float v2 = leaf.getMaxV();
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float colourVariation = 0.3f;
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float r = MathHelper.clamp(particleRed + (random.nextFloat() - 0.5f) * colourVariation, 0, 1);
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float g = MathHelper.clamp(particleGreen + (random.nextFloat() - 0.5f) * colourVariation, 0, 1);
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float b = MathHelper.clamp(particleBlue + (random.nextFloat() - 0.5f) * colourVariation, 0, 1);
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buffer.pos(0, 0, l).tex(u1, v1).color(r, g, b, particleAlpha).endVertex();
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buffer.pos(w, 0, l).tex(u2, v1).color(r, g, b, particleAlpha).endVertex();
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buffer.pos(w, w, l).tex(u2, v2).color(r, g, b, particleAlpha).endVertex();
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buffer.pos(0, w, l).tex(u1, v2).color(r, g, b, particleAlpha).endVertex();
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tessellator.draw();
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GlStateManager.popMatrix();
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}
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// Makes the rain go weird
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//GlStateManager.enableLighting();
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}
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/** Draws a single box for one segment of the arc, from the point (x1, y1, z1) to the point (x2, y2, z2), with given width and colour. */
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private void drawShearedBox(Tessellator tessellator, double x1, double y1, double z1, double x2, double y2, double z2, float width, float r, float g, float b, float a){
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float u1 = particleTexture.getMinU();
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float u2 = u1 + (particleTexture.getMaxU() - u1) * (float)(z1-z2)/SEGMENT_LENGTH;
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float v1 = particleTexture.getMinV();
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float dv = particleTexture.getMaxV() - v1;
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// width * 8 gives the total 'circumference' of the box
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float v2 = v1 + dv * 0.0625f;
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float v3 = v1 + dv * 0.125f;
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float v4 = v1 + dv * 0.1875f;
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float v5 = v1 + dv * 0.25f;
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BufferBuilder buffer = tessellator.getBuffer();
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buffer.begin(GL11.GL_TRIANGLE_STRIP, DefaultVertexFormats.POSITION_TEX_COLOR);
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buffer.pos(x1-width, y1-width, z1).tex(u1, v1).color(r, g, b, a).endVertex();
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buffer.pos(x2-width, y2-width, z2).tex(u2, v1).color(r, g, b, a).endVertex();
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buffer.pos(x1-width, y1+width, z1).tex(u1, v2).color(r, g, b, a).endVertex();
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buffer.pos(x2-width, y2+width, z2).tex(u2, v2).color(r, g, b, a).endVertex();
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buffer.pos(x1+width, y1+width, z1).tex(u1, v3).color(r, g, b, a).endVertex();
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buffer.pos(x2+width, y2+width, z2).tex(u2, v3).color(r, g, b, a).endVertex();
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buffer.pos(x1+width, y1-width, z1).tex(u1, v4).color(r, g, b, a).endVertex();
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buffer.pos(x2+width, y2-width, z2).tex(u2, v4).color(r, g, b, a).endVertex();
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buffer.pos(x1-width, y1-width, z1).tex(u1, v5).color(r, g, b, a).endVertex();
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buffer.pos(x2-width, y2-width, z2).tex(u2, v5).color(r, g, b, a).endVertex();
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tessellator.draw();
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}
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@SubscribeEvent
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public static void onTextureStitchEvent(TextureStitchEvent.Pre event){
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event.getMap().registerSprite(STEM_TEXTURE);
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for(ResourceLocation texture : LEAF_TEXTURES){
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event.getMap().registerSprite(texture);
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}
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}
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}
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