Fabillotic Posted March 27, 2020 Share Posted March 27, 2020 This is my first Forge mod for 1.15.2. I'm trying to render 3d lines into the world. Previously I used the RenderWorldLastEvent, but after I disabled Clouds in the Video settings I noticed, that the event wasn't being called anymore. This led me to believe, that I may have used the wrong event for this kind of stuff. This is the code I use to draw an outline around an area: //The method that should be called by the event public void render() { if(pos1 != null && pos2 != null) { //The next few lines calculate, where to render the area int[] xList = new int[4]; int[] yList = new int[4]; int[] zList = new int[4]; xList[0] = pos1.getX(); xList[1] = pos1.getX()+1; yList[0] = pos1.getY(); yList[1] = pos1.getY()+1; zList[0] = pos1.getZ(); zList[1] = pos1.getZ()+1; xList[2] = pos2.getX(); xList[3] = pos2.getX()+1; yList[2] = pos2.getY(); yList[3] = pos2.getY()+1; zList[2] = pos2.getZ(); zList[3] = pos2.getZ()+1; int minX = Integer.MAX_VALUE; int minY = Integer.MAX_VALUE; int minZ = Integer.MAX_VALUE; int maxX = Integer.MIN_VALUE; int maxY = Integer.MIN_VALUE; int maxZ = Integer.MIN_VALUE; for(int x : xList) { if(x < minX) minX = x; if(x > maxX) maxX = x; } for(int y : yList) { if(y < minY) minY = y; if(y > maxY) maxY = y; } for(int z : zList) { if(z < minZ) minZ = z; if(z > maxZ) maxZ = z; } //Render the first area AxisAlignedBB aabb = new AxisAlignedBB(minX, minY, minZ, maxX, maxY, maxZ); renderArea(aabb, 1.0f, 1.0f, 1.0f); //If position 3 is set, render the second area in another color if(pos3 != null) { AxisAlignedBB aabb2 = new AxisAlignedBB(pos3.getX(), pos3.getY(), pos3.getZ(), pos3.getX() + (maxX - minX), pos3.getY() + (maxY - minY), pos3.getZ() + (maxZ - minZ)); renderArea(aabb2, 1.0f, 0.33f, 0.33f); } } } //Contains the code to do the actual rendering public void renderArea(AxisAlignedBB aabb, float r, float g, float b) { Minecraft mc = Minecraft.getInstance(); Vec3d pos = mc.getRenderManager().info.getProjectedView(); float yaw = mc.getRenderManager().info.getYaw(); float pitch = mc.getRenderManager().info.getPitch(); GL11.glPushMatrix(); //Rotate after the camera GL11.glRotated(yaw-180, 0, 1, 0); GL11.glRotated(pitch, -Math.sin((yaw + 90) / 360 * Math.PI * 2), 0, Math.cos((yaw + 90) / 360 * Math.PI * 2)); //Translation GL11.glTranslated(-pos.x, -pos.y, -pos.z); //Expand the area for better visibility aabb = aabb.expand(0.01, 0.01, 0.01); aabb = aabb.offset(-0.005, -0.005, -0.005); //Color RenderSystem.color4f(r, g, b, 1.0f); GL11.glLineWidth(4); //Vertices GL11.glBegin(GL11.GL_LINES); GL11.glVertex3d(aabb.minX, aabb.minY, aabb.minZ); GL11.glVertex3d(aabb.maxX, aabb.minY, aabb.minZ); GL11.glVertex3d(aabb.minX, aabb.maxY, aabb.minZ); GL11.glVertex3d(aabb.maxX, aabb.maxY, aabb.minZ); GL11.glVertex3d(aabb.minX, aabb.minY, aabb.minZ); GL11.glVertex3d(aabb.minX, aabb.maxY, aabb.minZ); GL11.glVertex3d(aabb.maxX, aabb.minY, aabb.minZ); GL11.glVertex3d(aabb.maxX, aabb.maxY, aabb.minZ); GL11.glVertex3d(aabb.minX, aabb.minY, aabb.maxZ); GL11.glVertex3d(aabb.maxX, aabb.minY, aabb.maxZ); GL11.glVertex3d(aabb.minX, aabb.maxY, aabb.maxZ); GL11.glVertex3d(aabb.maxX, aabb.maxY, aabb.maxZ); GL11.glVertex3d(aabb.minX, aabb.minY, aabb.maxZ); GL11.glVertex3d(aabb.minX, aabb.maxY, aabb.maxZ); GL11.glVertex3d(aabb.maxX, aabb.minY, aabb.maxZ); GL11.glVertex3d(aabb.maxX, aabb.maxY, aabb.maxZ); GL11.glVertex3d(aabb.minX, aabb.minY, aabb.minZ); GL11.glVertex3d(aabb.minX, aabb.minY, aabb.maxZ); GL11.glVertex3d(aabb.minX, aabb.maxY, aabb.minZ); GL11.glVertex3d(aabb.minX, aabb.maxY, aabb.maxZ); GL11.glVertex3d(aabb.maxX, aabb.minY, aabb.minZ); GL11.glVertex3d(aabb.maxX, aabb.minY, aabb.maxZ); GL11.glVertex3d(aabb.maxX, aabb.maxY, aabb.minZ); GL11.glVertex3d(aabb.maxX, aabb.maxY, aabb.maxZ); GL11.glEnd(); GL11.glPopMatrix(); } Quote Link to comment Share on other sites More sharing options...
TheGreyGhost Posted March 28, 2020 Share Posted March 28, 2020 (edited) Hi I've got an example mod that has two examples of rendering 3D lines https://github.com/TheGreyGhost/MinecraftByExample see mbe21-RenderLines and DebugBlockVoxelShapeHighlighter There is some further advice in this link about rendering and using RenderWorldLastEvent: https://gist.github.com/williewillus/353c872bcf1a6ace9921189f6100d09a The appropriate event for rendering depends on when you want to render them; is it related to a block or item, or related to the player, or does it occur all the time? Perhaps describe for us in more detail what the gameplay effect you're trying to achieve is? -TGG Edited March 28, 2020 by TheGreyGhost Quote Link to comment Share on other sites More sharing options...
Fabillotic Posted March 28, 2020 Author Share Posted March 28, 2020 13 hours ago, TheGreyGhost said: Perhaps describe for us in more detail what the gameplay effect you're trying to achieve is? The idea is a mod, with wich you can highlight a specific block area. You can just press a key while looking at a block and the mod saves the position. After selecting two positions the mod will highlight the area between them. When pressing another keybind the mod will open a GUI. In this GUI you can select what operation should be executed. ("fill" or "clone") The mod will automatically generate the correct fill or clone command and execute it on behalf of the player. This is intended to make executing commands quicker. I have uploaded a video on youtube (unlisted) that shows how the mod is used and what problems it has. Quote Link to comment Share on other sites More sharing options...
TheGreyGhost Posted March 29, 2020 Share Posted March 29, 2020 Hi In that case the DrawHighlightEvent is definitely the one you want. Funnily enough one of my first mods was the same thing, great minds think alike obviously Abandoned it in 1.8 because it was too much work to keep up to date... -TGG Quote Link to comment Share on other sites More sharing options...
Fabillotic Posted March 29, 2020 Author Share Posted March 29, 2020 Nice mod! The only problem now is that the DrawHighlightEvent is only called when the player highlights a block. But the player should also see the structure when it is not targeted. It should look similar to a structure block for example. Thanks for the help though! You should really continue that mod! Quote Link to comment Share on other sites More sharing options...
TheGreyGhost Posted March 29, 2020 Share Posted March 29, 2020 Ah, ok. In that case RenderWorldLastEvent probably is the best one - I've never seen that disabling clouds problem with it. Might be worth tracing into updateCameraAndRender() to see why. It might be a forge bug perhaps... Or perhaps your drawing code is wrong (relying on the renderer to be in a particular state, and this state changes if you turn the clouds off). I think in any case you should convert your direct calls into the proper RenderType and IVertexBuffer calls. -TGG PS That mod is dead and buried a long time ago now Too many projects, too little time... Quote Link to comment Share on other sites More sharing options...
Fabillotic Posted March 29, 2020 Author Share Posted March 29, 2020 public void renderArea(AxisAlignedBB aabb, float r, float g, float b) { RenderSystem.pushMatrix(); ActiveRenderInfo info = Minecraft.getInstance().getRenderManager().info; RenderSystem.rotatef(info.getYaw()-180, 0, 1, 0); RenderSystem.rotatef(info.getPitch(), (float) (-Math.sin((info.getYaw() + 90) / 360 * Math.PI * 2)), 0.0f, (float) (Math.cos((info.getYaw() + 90) / 360 * Math.PI * 2))); RenderSystem.translated(-info.getProjectedView().x, -info.getProjectedView().y, -info.getProjectedView().z); RenderSystem.lineWidth(4); RenderSystem.color4f(r, g, b, 1.0f); aabb = aabb.expand(0.001, 0.001, 0.001); aabb = aabb.offset(-0.0005, -0.0005, -0.0005); Tessellator tessellator = Tessellator.getInstance(); BufferBuilder builder = tessellator.getBuffer(); builder.begin(GL11.GL_LINES, DefaultVertexFormats.POSITION); builder.pos(aabb.minX, aabb.minY, aabb.minZ).endVertex(); builder.pos(aabb.maxX, aabb.minY, aabb.minZ).endVertex(); builder.pos(aabb.minX, aabb.maxY, aabb.minZ).endVertex(); builder.pos(aabb.maxX, aabb.maxY, aabb.minZ).endVertex(); builder.pos(aabb.minX, aabb.minY, aabb.minZ).endVertex(); builder.pos(aabb.minX, aabb.maxY, aabb.minZ).endVertex(); builder.pos(aabb.maxX, aabb.minY, aabb.minZ).endVertex(); builder.pos(aabb.maxX, aabb.maxY, aabb.minZ).endVertex(); builder.pos(aabb.minX, aabb.minY, aabb.maxZ).endVertex(); builder.pos(aabb.maxX, aabb.minY, aabb.maxZ).endVertex(); builder.pos(aabb.minX, aabb.maxY, aabb.maxZ).endVertex(); builder.pos(aabb.maxX, aabb.maxY, aabb.maxZ).endVertex(); builder.pos(aabb.minX, aabb.minY, aabb.maxZ).endVertex(); builder.pos(aabb.minX, aabb.maxY, aabb.maxZ).endVertex(); builder.pos(aabb.maxX, aabb.minY, aabb.maxZ).endVertex(); builder.pos(aabb.maxX, aabb.maxY, aabb.maxZ).endVertex(); builder.pos(aabb.minX, aabb.minY, aabb.minZ).endVertex(); builder.pos(aabb.minX, aabb.minY, aabb.maxZ).endVertex(); builder.pos(aabb.minX, aabb.maxY, aabb.minZ).endVertex(); builder.pos(aabb.minX, aabb.maxY, aabb.maxZ).endVertex(); builder.pos(aabb.maxX, aabb.minY, aabb.minZ).endVertex(); builder.pos(aabb.maxX, aabb.minY, aabb.maxZ).endVertex(); builder.pos(aabb.maxX, aabb.maxY, aabb.minZ).endVertex(); builder.pos(aabb.maxX, aabb.maxY, aabb.maxZ).endVertex(); tessellator.draw(); RenderSystem.popMatrix(); } I have changed the renderArea method to this and it still has the same problems. Quote Link to comment Share on other sites More sharing options...
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