private void renderGarland(EventRender3D event) {
float anim = this.animationProgress;
if (anim <= 0.0F) return;
LivingEntity entityToRender = this.target != null ? this.target : this.lastTarget;
if (entityToRender == null) return;
MatrixStack ms = event.getMatrix();
Camera camera = mc.gameRenderer.getCamera();
Vec3d targetPos = MathUtil.interpolate(entityToRender);
double renderX = targetPos.x - camera.getPos().x;
double renderY = targetPos.y - camera.getPos().y;
double renderZ = targetPos.z - camera.getPos().z;
float height = entityToRender.getHeight();
float width = entityToRender.getWidth();
float radius = width * 1.2f;
float time = (System.currentTimeMillis() % 4000) / 4000f;
float offset = time * 360f;
int lightsCount = 30;
int spirals = 3;
ms.push();
ms.translate(renderX, renderY, renderZ);
RenderSystem.enableBlend();
RenderSystem.defaultBlendFunc();
RenderSystem.disableCull();
if (throughWalls.isEnabled()) {
RenderSystem.disableDepthTest();
RenderSystem.depthMask(false);
} else {
RenderSystem.enableDepthTest();
RenderSystem.depthMask(false);
}
RenderSystem.setShader(ShaderProgramKeys.POSITION_COLOR);
Tessellator tessellator = Tessellator.getInstance();
BufferBuilder buffer = tessellator.begin(VertexFormat.DrawMode.DEBUG_LINE_STRIP, VertexFormats.POSITION_COLOR);
int wireColor = 0xFF0B3B0B;
for (int i = 0; i <= lightsCount; i++) {
float progress = (float) i / lightsCount;
float angle = (float) Math.toRadians(offset + (progress * 360f * spirals));
float currentRadius = radius * (1.0f - (progress * 0.6f));
float x = (float) Math.cos(angle) * currentRadius;
float z = (float) Math.sin(angle) * currentRadius;
float y = progress * height;
int color = ColorUtil.multAlpha(wireColor, anim);
int r = (color >> 16) & 0xFF;
int g = (color >> 8) & 0xFF;
int b = color & 0xFF;
int a = (color >> 24) & 0xFF;
buffer.vertex(ms.peek().getPositionMatrix(), x, y, z).color(r, g, b, a);
}
BufferRenderer.drawWithGlobalProgram(buffer.end());
RenderSystem.setShader(ShaderProgramKeys.POSITION_TEX_COLOR);
RenderSystem.setShaderTexture(0, bloom);
RenderSystem.blendFunc(GlStateManager.SrcFactor.SRC_ALPHA, GlStateManager.DstFactor.ONE);
BufferBuilder bulbBuffer = tessellator.begin(VertexFormat.DrawMode.QUADS, VertexFormats.POSITION_TEXTURE_COLOR);
float pitch = camera.getPitch();
float yaw = camera.getYaw();
for (int i = 0; i <= lightsCount; i++) {
float progress = (float) i / lightsCount;
float angle = (float) Math.toRadians(offset + (progress * 360f * spirals));
float currentRadius = radius * (1.0f - (progress * 0.6f));
float x = (float) Math.cos(angle) * currentRadius;
float z = (float) Math.sin(angle) * currentRadius;
float y = progress * height;
float size = 0.15f * easeOutCubic(anim);
float twinkle = (float) Math.sin((System.currentTimeMillis() / 100.0) + i) * 0.2f + 0.8f;
float alpha = anim * twinkle;
int color = getFestiveColor(i);
int finalColor = ColorUtil.multAlpha(color, alpha);
drawBillboard(bulbBuffer, ms, x, y, z, size, yaw, pitch, finalColor);
}
BufferRenderer.drawWithGlobalProgram(bulbBuffer.end());
RenderSystem.depthMask(true);
RenderSystem.disableBlend();
RenderSystem.enableCull();
ms.pop();
}
private void drawBillboard(BufferBuilder buffer, MatrixStack ms, float x, float y, float z, float scale, float yaw, float pitch, int color) {
ms.push();
ms.translate(x, y, z);
ms.multiply(RotationAxis.POSITIVE_Y.rotationDegrees(-yaw));
ms.multiply(RotationAxis.POSITIVE_X.rotationDegrees(pitch));
Matrix4f matrix = ms.peek().getPositionMatrix();
int r = (color >> 16) & 0xFF;
int g = (color >> 8) & 0xFF;
int b = color & 0xFF;
int a = (color >> 24) & 0xFF;
buffer.vertex(matrix, -scale, -scale, 0).texture(0, 0).color(r, g, b, a);
buffer.vertex(matrix, -scale, scale, 0).texture(0, 1).color(r, g, b, a);
buffer.vertex(matrix, scale, scale, 0).texture(1, 1).color(r, g, b, a);
buffer.vertex(matrix, scale, -scale, 0).texture(1, 0).color(r, g, b, a);
ms.pop();
}
private int getFestiveColor(int index) {
int type = index % 4;
return switch (type) {
case 0 -> 0xFFFF0000;
case 1 -> 0xFFFFD700;
case 2 -> 0xFF00FF00;
case 3 -> 0xFF00BFFF;
default -> 0xFFFFFFFF;
};
}
