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!
2019-08-18 00:04:18 +01:00
parent 2680d02304
commit f37812be3e
1564 changed files with 47652 additions and 12984 deletions
@@ -0,0 +1,131 @@
+package electroblob.wizardry.client.particle;
+
+import net.minecraft.client.renderer.BufferBuilder;
+import net.minecraft.client.renderer.GlStateManager;
+import net.minecraft.client.renderer.OpenGlHelper;
+import net.minecraft.client.renderer.Tessellator;
+import net.minecraft.client.renderer.vertex.DefaultVertexFormats;
+import net.minecraft.entity.Entity;
+import net.minecraft.util.math.MathHelper;
+import net.minecraft.world.World;
+import org.lwjgl.opengl.GL11;
+
+public class ParticleSphere extends ParticleWizardry {
+
+	public ParticleSphere(World world, double x, double y, double z){
+		super(world, x, y, z);
+		this.setRBGColorF(1, 1, 1);
+		this.particleMaxAge = 5;
+		this.particleAlpha = 0.8f;
+	}
+
+	@Override
+	public boolean shouldDisableDepth(){
+		return true;
+	}
+
+	@Override
+	public int getFXLayer(){
+		return 3;
+	}
+
+	@Override
+	public void onUpdate(){
+
+		super.onUpdate();
+
+	}
+
+	@Override
+	public void renderParticle(BufferBuilder buffer, Entity viewer, float partialTicks, float rotationX, float rotationZ, float rotationYZ,
+							   float rotationXY, float rotationXZ){
+
+		// Copied from ParticleWizardry, needs to be here since we're not calling super
+		updateEntityLinking(partialTicks);
+
+		float x = (float)(this.prevPosX + (this.posX - this.prevPosX) * (double)partialTicks);
+		float y = (float)(this.prevPosY + (this.posY - this.prevPosY) * (double)partialTicks);
+		float z = (float)(this.prevPosZ + (this.posZ - this.prevPosZ) * (double)partialTicks);
+
+		GlStateManager.pushMatrix();
+		GlStateManager.translate(x - interpPosX, y - interpPosY, z - interpPosZ);
+
+		GlStateManager.disableLighting();
+		GlStateManager.enableBlend();
+		GlStateManager.enableCull();
+		GlStateManager.disableTexture2D();
+		GlStateManager.blendFunc(GlStateManager.SourceFactor.SRC_ALPHA, GlStateManager.DestFactor.ONE);
+		OpenGlHelper.setLightmapTextureCoords(OpenGlHelper.lightmapTexUnit, 240f, 240f);
+
+		float latStep = (float)Math.PI/20;
+		float longStep = (float)Math.PI/20;
+
+		float sphereRadius = this.particleScale * (this.particleAge + partialTicks - 1) / this.particleMaxAge;
+		float alpha = this.particleAlpha * (1 - (this.particleAge + partialTicks - 1) / this.particleMaxAge);
+
+		drawSphere(Tessellator.getInstance(), buffer, sphereRadius, latStep, longStep, true, particleRed, particleGreen, particleBlue, alpha);
+		drawSphere(Tessellator.getInstance(), buffer, sphereRadius, latStep, longStep, false, particleRed, particleGreen, particleBlue, alpha);
+
+		GlStateManager.enableTexture2D();
+		GlStateManager.enableLighting();
+		GlStateManager.disableCull();
+		GlStateManager.disableBlend();
+
+		GlStateManager.popMatrix();
+
+	}
+	
+	@Override
+	public int getBrightnessForRender(float partialTicks){
+		return 15728880;
+	}
+
+	/**
+	 * Draws a sphere (using lat/long triangles) with the given parameters.
+	 * @param radius The radius of the sphere.
+	 * @param latStep The latitude step; smaller is smoother but increases performance cost.
+	 * @param longStep The longitude step; smaller is smoother but increases performance cost.
+	 * @param inside Whether to draw the outside or the inside of the sphere.
+	 * @param r The red component of the sphere colour.
+	 * @param g The green component of the sphere colour.
+	 * @param b The blue component of the sphere colour.
+	 * @param a The alpha component of the sphere colour.
+	 */
+	private static void drawSphere(Tessellator tessellator, BufferBuilder buffer, float radius, float latStep, float longStep, boolean inside, float r, float g, float b, float a){
+
+		buffer.begin(GL11.GL_TRIANGLE_STRIP, DefaultVertexFormats.POSITION_COLOR);
+
+		boolean goingUp = inside;
+
+		buffer.pos(0, goingUp ? -radius : radius, 0).color(r, g, b, a).endVertex(); // Start at the north pole
+
+		for(float longitude = -(float)Math.PI; longitude <= (float)Math.PI; longitude += longStep){
+
+			// Leave the poles out since they only have a single point per stack instead of two
+			for(float theta = (float)Math.PI/2 - latStep; theta >= -(float)Math.PI/2 + latStep; theta -= latStep){
+
+				float latitude = goingUp ? -theta : theta;
+
+				float hRadius = radius * MathHelper.cos(latitude);
+				float vy = radius * MathHelper.sin(latitude);
+				float vx = hRadius * MathHelper.sin(longitude);
+				float vz = hRadius * MathHelper.cos(longitude);
+
+				buffer.pos(vx, vy, vz).color(r, g, b, a).endVertex();
+
+				vx = hRadius * MathHelper.sin(longitude + longStep);
+				vz = hRadius * MathHelper.cos(longitude + longStep);
+
+				buffer.pos(vx, vy, vz).color(r, g, b, a).endVertex();
+			}
+
+			// The next pole
+			buffer.pos(0, goingUp ? radius : -radius, 0).color(r, g, b, a).endVertex();
+
+			goingUp = !goingUp;
+		}
+
+		tessellator.draw();
+	}
+
+}