Electroblob77
f37812be3e
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!
100 lines
3.5 KiB
Java
100 lines
3.5 KiB
Java
package electroblob.wizardry.client.particle;
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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.vertex.DefaultVertexFormats;
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import net.minecraft.world.World;
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import org.lwjgl.opengl.GL11;
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public class ParticleBeam extends ParticleTargeted {
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/** Half the width of the outermost layer. */
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private static final float THICKNESS = 0.1f;
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public ParticleBeam(World world, double x, double y, double z){
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super(world, x, y, z); // Does not have a 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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}
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@Override
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public boolean shouldDisableDepth(){
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return true;
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}
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@Override
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public int getFXLayer(){
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return 3;
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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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float scale = this.particleScale;
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if(this.particleMaxAge > 0){
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float ageFraction = (particleAge + partialTicks - 1)/particleMaxAge;
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// Squaring this makes it look smoother than a linear shrinking effect
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scale = this.particleScale * (1 - ageFraction*ageFraction);
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}
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GlStateManager.disableLighting();
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GlStateManager.enableBlend();
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GlStateManager.disableTexture2D();
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GlStateManager.blendFunc(GlStateManager.SourceFactor.SRC_ALPHA, GlStateManager.DestFactor.ONE);
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OpenGlHelper.setLightmapTextureCoords(OpenGlHelper.lightmapTexUnit, 240f, 240f);
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for(int layer=0; layer<3; layer++){
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drawSegment(tessellator, layer, 0, 0, 0, 0, 0, length, THICKNESS * scale);
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}
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GlStateManager.enableTexture2D();
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GlStateManager.enableLighting();
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GlStateManager.disableBlend();
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}
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/** Draws the given layer of a segment of the arc, from the point (x1, y1, z1) to the point (x2, y2, z2), with the given thickness. */
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private void drawSegment(Tessellator tessellator, int layer, double x1, double y1, double z1, double x2, double y2, double z2, float thickness){
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BufferBuilder buffer = tessellator.getBuffer();
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buffer.begin(GL11.GL_TRIANGLE_STRIP, DefaultVertexFormats.POSITION_COLOR);
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switch(layer){
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case 0:
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drawShearedBox(buffer, x1, y1, z1, x2, y2, z2, 0.25f*thickness, 1, 1, 1, 1);
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break;
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case 1:
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drawShearedBox(buffer, x1, y1, z1, x2, y2, z2, 0.6f*thickness, (particleRed + 1)/2, (particleGreen + 1)/2,
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(particleBlue + 1)/2, 0.65f);
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break;
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case 2:
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drawShearedBox(buffer, x1, y1, z1, x2, y2, z2, thickness, particleRed, particleGreen, particleBlue, 0.3f);
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break;
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}
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tessellator.draw();
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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(BufferBuilder buffer, 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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buffer.pos(x1-width, y1-width, z1).color(r, g, b, a).endVertex();
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buffer.pos(x2-width, y2-width, z2).color(r, g, b, a).endVertex();
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buffer.pos(x1-width, y1+width, z1).color(r, g, b, a).endVertex();
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buffer.pos(x2-width, y2+width, z2).color(r, g, b, a).endVertex();
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buffer.pos(x1+width, y1+width, z1).color(r, g, b, a).endVertex();
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buffer.pos(x2+width, y2+width, z2).color(r, g, b, a).endVertex();
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buffer.pos(x1+width, y1-width, z1).color(r, g, b, a).endVertex();
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buffer.pos(x2+width, y2-width, z2).color(r, g, b, a).endVertex();
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buffer.pos(x1-width, y1-width, z1).color(r, g, b, a).endVertex();
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buffer.pos(x2-width, y2-width, z2).color(r, g, b, a).endVertex();
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}
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}
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