What's everyone working on? (tigsource inspired)

[Zilarrezko]

I made a rock.

arock.png (41.36 KiB) Viewed 3114 times

[Jasoco]

-awesome post-

Holy hell, man! You're something else, in a good way!
Is that using a modified raycaster engine or a completely different 3D engine? (Especially for the overworld)

It's all 3D, baby.

[Davidobot]

-awesome post-

Holy hell, man! You're something else, in a good way!
Is that using a modified raycaster engine or a completely different 3D engine? (Especially for the overworld)

It's all 3D, baby.

How do you so perfectly warp the textures? Quads?

[Zilarrezko]

5 virtual cookies it isn't meshes. I hate dealing with those, they make everything laggy.

[Positive07]

Shaders and canvases... my computer would scream and shout at me if I try to run one of Jasoco's games

[Jasoco]

How do you so perfectly warp the textures? Quads?

A shader that xXxMoNkEyMaNxXx created for me with some modifications.

5 virtual cookies it isn't meshes. I hate dealing with those, they make everything laggy.

It's not meshes. I'd have to create the meshes for every single polygon In memory and update them every frame if I did use them. And even then the textures don't stretch correctly with meshes.

Shaders and canvases... my computer would scream and shout at me if I try to run one of Jasoco's games

It probably would. My computer is the most top of the line MacBook Pro you can get and it still has framerate issues sometimes.

[Davidobot]

How do you so perfectly warp the textures? Quads?

A shader that xXxMoNkEyMaNxXx created for me with some modifications.

Ah yes! I found that!
Original thread: viewtopic.php?f=5&t=12483&hilit=xXxMoNkEyMaNxXx

Here's the lib updated to 0.9.1:

Code: Select all

--By xXxMoNkEyMaNxXx
--[[Complete API----  This was made to be a module, PLEASE USE IT AS A MODULE

   .cw=false
   -Counter clockwise vertex order starting at top left.

   .cw=true
   -Clockwise vertex order starting at top left.


   .preload(loadup):

   -loadup==true sets pixel effect to polygon texturer,
   -loadup==false clears any pixel effect.
   *NOTE: preload(false) must be done to draw blank polygons after textured ones.


   .setRepeat(origin,size):
   -Makes the image repeat every 'size' starting at 'origin'.
   -The default is origin={0,0},size={1,1}.


   .quad(image,v1,v2,v3,v4) - Draws a polygon.

   -if 'image' is nil, the function will prepare to make it blank.


   .quad(v1,v2,v3,v4) - draws a polygon with no image.


   .fast(image,v1,v2,v3,v4) - draws a polygon with 'image' on it.
   -slightly(!!!) faster than quad.
   -Must include an image.
   -Must call .preload(true) beforehand.


   Info:
   Vertices are in the form {x,y}.
   Vertices go clockwise from the top left.

   v1---v2
   | img |
   v4---v3
--]]
local glsl=love.graphics.newShader[[
//Made by xXxMoNkEyMaNxXx

extern Image img;
extern vec2 v1;
extern vec2 v2;
extern vec2 v3;
extern vec2 v4;

extern vec2 p0;
extern vec2 rep;

extern number SIZEY;//So annoying

vec2 one=vec2(1.0,1.0);

number c(vec2 v1,vec2 v2)
{
   return v1.x*v2.y-v2.x*v1.y;
}
number intersect(vec2 v1,vec2 d1,vec2 v2,vec2 d2)
{
   //v1+d1*
   return c(v2-v1,d2)/c(d1,d2);
}
vec4 mask(vec4 base,vec4 over)
{
   return vec4(over.rgb*over.a+base.rgb*(1-over.a),over.a+base.a*(1-over.a));
}
vec4 effect(vec4 colour,Image UNUSED1,vec2 UNUSED2,vec2 inverted)
{
   vec2 p=vec2(inverted.x,SIZEY-inverted.y);//SO ANNOYING

   vec2 A1=normalize(v2-v1);
   vec2 A2=normalize(v3-v4);

   vec2 B1=normalize(v2-v3);
   vec2 B2=normalize(v1-v4);

   number Adiv=c(A1,A2);
   number Bdiv=c(B1,B2);

   vec2 uv;

   bvec2 eq0=bvec2(abs(Adiv)<=0.0001,abs(Bdiv)<=0.0001);
   if(eq0.x && eq0.y){
      //Both edges are parallel, therefore the shape is a parallelogram (Isometric)
      number dis=dot(p-v1,A1);

      //cos theta
      number ct=dot(A1,B1);

      //Closest point on v1->A1 to p
      vec2 pA=v1+A1*dis;

      //uv
      number r=length(p-pA)/sqrt(1-ct*ct);
      uv=vec2(1-r/length(v2-v3),(dis+r*ct)/length(v2-v1));
   }else if(eq0.x){
      //One Vanishing point occurs in numerically set scenarios in 3D, and is a feature of 2.5D

      //Horizon is A1 (=A2) from B
      vec2 Vp=v3+B1*c(v4-v3,B2)/Bdiv;

      //Some point in the distance that diagonals go to
      vec2 D=Vp+A1*intersect(Vp,A1,v4,normalize(v2-v4));

      //uv
      number u=intersect(v1,A1,Vp,normalize(p-Vp));
      number v=intersect(v1,A1,D,normalize(p-D))-u;

      number len=length(v2-v1);
      uv=vec2(len-v,u)/len;//Reversed components to match up with other one
   }else if(eq0.y){
      //If the other edge is the parallel one
      vec2 Vp=v1+A1*c(v4-v1,A2)/Adiv;
      vec2 D=Vp+B1*intersect(Vp,B1,v4,normalize(v2-v4));
      number u=intersect(v3,B1,Vp,normalize(p-Vp));
      number len=length(v2-v3);
      uv=vec2(u,len-intersect(v3,B1,D,normalize(p-D))+u)/len;
   }else{
      //Else, two vanishing points

      //*intersect(v1,A1,v4,A2)
      //*intersect(v3,B1,v4,B2)

      //Vanishing points
      vec2 A=v1+A1*c(v4-v1,A2)/Adiv;
      vec2 B=v3+B1*c(v4-v3,B2)/Bdiv;

      //Horizon
      vec2 H=normalize(A-B);

      //Pixel
      uv=vec2(intersect(v4,-H,A,normalize(p-A))/intersect(v4,-H,v2,-A1),intersect(v4,H,B,normalize(p-B))/intersect(v4,H,v2,-B1));
   }
   return mask(colour,Texel(img,mod(uv*rep+vec2(p0.x-1,p0.y),one)));
}
]]
local gl_send=glsl.send
local q=love.graphics.polygon
-- local lgr = love.graphics
local setEffect=love.graphics.setShader
gl_send(glsl,"SIZEY",love.graphics.getHeight())--So annoying
gl_send(glsl,"p0",{0,0})
gl_send(glsl,"rep",{1,1})

module(...)
cw=true--clockwise
function preload(loadup)
   if loadup then
      setEffect(glsl)
   else
      setEffect()
   end
end
function setRepeat(origin,size)
   gl_send(glsl,"p0",origin)
   gl_send(glsl,"rep",size)
end
function fast(img,v1,v2,v3,v4)
   gl_send(glsl,"img",img)
   gl_send(glsl,"v1",v2)
   gl_send(glsl,"v2",v3)
   gl_send(glsl,"v3",v4)
   gl_send(glsl,"v4",v1)
   q("fill",v1[1],v1[2],v2[1],v2[2],v3[1],v3[2],v4[1],v4[2])
end
function quad(img,v1,v2,v3,v4,h)
   if h then gl_send(glsl,"SIZEY",h) end
   if img and v4 then
      setEffect(glsl)
      gl_send(glsl,"img",img)
      if cw then
         gl_send(glsl,"v1",v2)
         gl_send(glsl,"v2",v3)
         gl_send(glsl,"v3",v4)
         gl_send(glsl,"v4",v1)
      else
         gl_send(glsl,"v1",v2)
         gl_send(glsl,"v2",v1)
         gl_send(glsl,"v3",v4)
         gl_send(glsl,"v4",v3)
      end
   else
      setEffect()
   end
   -- lgr.setBlendMode("premultiplied")
   if v4 then
      q("fill",v1[1],v1[2],v2[1],v2[2],v3[1],v3[2],v4[1],v4[2])
   else--img acts as a vertex
      q("fill",img[1],img[2],v1[1],v1[2],v2[1],v2[2],v3[1],v3[2])
   end
   -- lgr.setBlendMode("alpha")
   setEffect()
end

Is there a library that translates a 3D point into a 2D one? (For measurement and stuff)

[davisdude]

If you need measurement you could use this (from here)

Code: Select all

-- Distance between two 3D points:
function math.dist(x1,y1,z1, x2,y2,z2) return ((x2-x1)^2+(y2-y1)^2+(z2-z1)^2)^0.5 end

[Jasoco]

Ah yes! I found that!
Original thread: viewtopic.php?f=5&t=12483&hilit=xXxMoNkEyMaNxXx

Here's the lib updated to 0.9.1:

Code: Select all

--By xXxMoNkEyMaNxXx
--[[Complete API----  This was made to be a module, PLEASE USE IT AS A MODULE

   .cw=false
   -Counter clockwise vertex order starting at top left.

   .cw=true
   -Clockwise vertex order starting at top left.


   .preload(loadup):

   -loadup==true sets pixel effect to polygon texturer,
   -loadup==false clears any pixel effect.
   *NOTE: preload(false) must be done to draw blank polygons after textured ones.


   .setRepeat(origin,size):
   -Makes the image repeat every 'size' starting at 'origin'.
   -The default is origin={0,0},size={1,1}.


   .quad(image,v1,v2,v3,v4) - Draws a polygon.

   -if 'image' is nil, the function will prepare to make it blank.


   .quad(v1,v2,v3,v4) - draws a polygon with no image.


   .fast(image,v1,v2,v3,v4) - draws a polygon with 'image' on it.
   -slightly(!!!) faster than quad.
   -Must include an image.
   -Must call .preload(true) beforehand.


   Info:
   Vertices are in the form {x,y}.
   Vertices go clockwise from the top left.

   v1---v2
   | img |
   v4---v3
--]]
local glsl=love.graphics.newShader[[
//Made by xXxMoNkEyMaNxXx

extern Image img;
extern vec2 v1;
extern vec2 v2;
extern vec2 v3;
extern vec2 v4;

extern vec2 p0;
extern vec2 rep;

extern number SIZEY;//So annoying

vec2 one=vec2(1.0,1.0);

number c(vec2 v1,vec2 v2)
{
   return v1.x*v2.y-v2.x*v1.y;
}
number intersect(vec2 v1,vec2 d1,vec2 v2,vec2 d2)
{
   //v1+d1*
   return c(v2-v1,d2)/c(d1,d2);
}
vec4 mask(vec4 base,vec4 over)
{
   return vec4(over.rgb*over.a+base.rgb*(1-over.a),over.a+base.a*(1-over.a));
}
vec4 effect(vec4 colour,Image UNUSED1,vec2 UNUSED2,vec2 inverted)
{
   vec2 p=vec2(inverted.x,SIZEY-inverted.y);//SO ANNOYING

   vec2 A1=normalize(v2-v1);
   vec2 A2=normalize(v3-v4);

   vec2 B1=normalize(v2-v3);
   vec2 B2=normalize(v1-v4);

   number Adiv=c(A1,A2);
   number Bdiv=c(B1,B2);

   vec2 uv;

   bvec2 eq0=bvec2(abs(Adiv)<=0.0001,abs(Bdiv)<=0.0001);
   if(eq0.x && eq0.y){
      //Both edges are parallel, therefore the shape is a parallelogram (Isometric)
      number dis=dot(p-v1,A1);

      //cos theta
      number ct=dot(A1,B1);

      //Closest point on v1->A1 to p
      vec2 pA=v1+A1*dis;

      //uv
      number r=length(p-pA)/sqrt(1-ct*ct);
      uv=vec2(1-r/length(v2-v3),(dis+r*ct)/length(v2-v1));
   }else if(eq0.x){
      //One Vanishing point occurs in numerically set scenarios in 3D, and is a feature of 2.5D

      //Horizon is A1 (=A2) from B
      vec2 Vp=v3+B1*c(v4-v3,B2)/Bdiv;

      //Some point in the distance that diagonals go to
      vec2 D=Vp+A1*intersect(Vp,A1,v4,normalize(v2-v4));

      //uv
      number u=intersect(v1,A1,Vp,normalize(p-Vp));
      number v=intersect(v1,A1,D,normalize(p-D))-u;

      number len=length(v2-v1);
      uv=vec2(len-v,u)/len;//Reversed components to match up with other one
   }else if(eq0.y){
      //If the other edge is the parallel one
      vec2 Vp=v1+A1*c(v4-v1,A2)/Adiv;
      vec2 D=Vp+B1*intersect(Vp,B1,v4,normalize(v2-v4));
      number u=intersect(v3,B1,Vp,normalize(p-Vp));
      number len=length(v2-v3);
      uv=vec2(u,len-intersect(v3,B1,D,normalize(p-D))+u)/len;
   }else{
      //Else, two vanishing points

      //*intersect(v1,A1,v4,A2)
      //*intersect(v3,B1,v4,B2)

      //Vanishing points
      vec2 A=v1+A1*c(v4-v1,A2)/Adiv;
      vec2 B=v3+B1*c(v4-v3,B2)/Bdiv;

      //Horizon
      vec2 H=normalize(A-B);

      //Pixel
      uv=vec2(intersect(v4,-H,A,normalize(p-A))/intersect(v4,-H,v2,-A1),intersect(v4,H,B,normalize(p-B))/intersect(v4,H,v2,-B1));
   }
   return mask(colour,Texel(img,mod(uv*rep+vec2(p0.x-1,p0.y),one)));
}
]]
local gl_send=glsl.send
local q=love.graphics.polygon
-- local lgr = love.graphics
local setEffect=love.graphics.setShader
gl_send(glsl,"SIZEY",love.graphics.getHeight())--So annoying
gl_send(glsl,"p0",{0,0})
gl_send(glsl,"rep",{1,1})

module(...)
cw=true--clockwise
function preload(loadup)
   if loadup then
      setEffect(glsl)
   else
      setEffect()
   end
end
function setRepeat(origin,size)
   gl_send(glsl,"p0",origin)
   gl_send(glsl,"rep",size)
end
function fast(img,v1,v2,v3,v4)
   gl_send(glsl,"img",img)
   gl_send(glsl,"v1",v2)
   gl_send(glsl,"v2",v3)
   gl_send(glsl,"v3",v4)
   gl_send(glsl,"v4",v1)
   q("fill",v1[1],v1[2],v2[1],v2[2],v3[1],v3[2],v4[1],v4[2])
end
function quad(img,v1,v2,v3,v4,h)
   if h then gl_send(glsl,"SIZEY",h) end
   if img and v4 then
      setEffect(glsl)
      gl_send(glsl,"img",img)
      if cw then
         gl_send(glsl,"v1",v2)
         gl_send(glsl,"v2",v3)
         gl_send(glsl,"v3",v4)
         gl_send(glsl,"v4",v1)
      else
         gl_send(glsl,"v1",v2)
         gl_send(glsl,"v2",v1)
         gl_send(glsl,"v3",v4)
         gl_send(glsl,"v4",v3)
      end
   else
      setEffect()
   end
   -- lgr.setBlendMode("premultiplied")
   if v4 then
      q("fill",v1[1],v1[2],v2[1],v2[2],v3[1],v3[2],v4[1],v4[2])
   else--img acts as a vertex
      q("fill",img[1],img[2],v1[1],v1[2],v2[1],v2[2],v3[1],v3[2])
   end
   -- lgr.setBlendMode("alpha")
   setEffect()
end

I've made so many changes to the shader and other code that this is irrelevant to me. Unless it's what I had. I modified it to take a shading color and an intensity as a vec4 and apply it to the colorizing part. It's really awesome. It means I don't have to do any silly double drawing or pre-generating of differently shaded images. It's awesome. I can also send a custom draw width and height which the original version could not. (Basic math calculations for the X. For some reason the Y accepts a height in pixels, but the X requires a scale and automatically uses the window width. So I had to modify it to allow me to pass a width and height.)

MonkeyMan was a savior there. I'd never have done it myself. Since meshes turned out to not be what I was hoping for this was the best I could ask for. If only I could somehow offload all the 3D calculations to a shader and have it all draw at once, but I don't know if it'd even be possible. I'd have to send all the 3D points into the shader memory and send some other camera data and who knows how much trouble that'd be. It works fast enough for me right now. Thanks mainly to LuaJIT. Without that I'd be so limited. I don't know how the hell Oysi did his engine but I wish he'd share it. His has texturing as well as shading and lighting and physics. That's more than I could ever wish to have.

[Davidobot]

Jasoco, just wondering, but how much visible faces can your engine support before becoming unplaybly laggy?