refactor & vg_m
[fishladder.git] / fishladder.c
index 89bc1d8432c2b63eaaf7fa205244ec91d0d486e8..5ad95d6844efef42a71a8c8d2e0e4ec6fb54732e 100644 (file)
@@ -10,13 +10,12 @@ SHADER_DEFINE( colour_shader,
 
        // VERTEX
        "layout (location=0) in vec2 a_co;"
-       "uniform mat4 uPv;"
-       "uniform mat4 uMdl;"
+       "uniform mat3 uPv;"
+       "uniform mat3 uMdl;"
        ""
        "void main()"
        "{"
-       "  vec4 vert_pos = uPv * uMdl * vec4( a_co.x, 0.0, a_co.y, 1.0 );"
-       "  gl_Position = vert_pos;"
+       "  gl_Position = vec4( uPv * uMdl * vec3( a_co, 1.0 ), 1.0 );"
        "}",
        
        // FRAGMENT
@@ -37,7 +36,7 @@ SHADER_DEFINE( tilemap_shader,
        "layout (location=0) in vec2 a_co;"                     // XY 
        "layout (location=1) in vec2 a_offset;" // XY offset
        "layout (location=2) in vec4 a_data;"           // atlas-uv, amt, other
-       "uniform mat4 uPv;"
+       "uniform mat3 uPv;"
        "uniform vec2 uOrigin;"
        ""
        "out vec4 aCoords;"
@@ -45,8 +44,8 @@ SHADER_DEFINE( tilemap_shader,
        "void main()"
        "{"
                "vec2 world_coord = a_co+a_offset+uOrigin;"
-          "gl_Position = uPv * vec4( world_coord.x, 0.0, world_coord.y, 1.0 );"
-          "aCoords = vec4((a_co*0.98+0.01 + vec2(a_data.x,0.0)) * 0.0625, a_data.zw);"
+          "gl_Position = vec4( uPv * vec3( world_coord, 1.0 ), 1.0 );"
+          "aCoords = vec4( (a_co*0.98+0.01 + vec2(a_data.x,0.0)) * 0.0625, a_data.zw );"
        "}",
        
        // FRAGMENT
@@ -63,7 +62,10 @@ SHADER_DEFINE( tilemap_shader,
                "vec4 ripple = texture( uTexRipples, vec2( glyph.x - uTime, glyph.y ));"
                "float wstatus = -((aCoords.z/128.0)-1.0);"     // -1 := None in, 0.0 := Hold middle, 1.0 := All out
                "float dev = step( 0.0, glyph.x+wstatus ) * step( glyph.x+wstatus, 1.0 );" //+ abs(glyph.y-0.5) );"
-               "vec3 composite = mix( vec3(0.5,0.5,0.5), vec3(0.3,0.6,1.0) + ripple.xyz * 0.05, step( 0.75, glyph.a )*dev ) * glyph.z;"
+               
+               // TODO: Fix texture instead of doing this..
+               "float shadow = mix( 1.0, glyph.z, step(0.25, glyph.w) );"
+               "vec3 composite = mix( vec3(0.5,0.5,0.5), vec3(0.3,0.6,1.0) + ripple.xyz * 0.05, step( 0.75, glyph.a )*dev ) * shadow;"
           "FragColor = vec4( composite, 1.0 );"
        "}"
        ,
@@ -74,7 +76,7 @@ SHADER_DEFINE( fish_shader,
        // VERTEX
        "layout (location=0) in vec2 a_co;"     // XY UV
 
-       "uniform mat4 uPv;"
+       "uniform mat3 uPv;"
        "uniform vec3 uPosition;"
        
        "out vec2 aTexCoords;"
@@ -82,7 +84,7 @@ SHADER_DEFINE( fish_shader,
        "void main()"
        "{"
                "vec2 world_coord = a_co + uPosition.xy;"
-               "gl_Position = uPv * vec4( world_coord.x, 0.0, world_coord.y, 1.0 );"
+               "gl_Position = vec4( uPv * vec3( world_coord, 1.0 ), 1.0 );"
                "aTexCoords = vec2( (a_co.x + uPosition.z) * 0.125, a_co.y );"
        "}",
        // FRAGMENT
@@ -101,9 +103,9 @@ SHADER_DEFINE( fish_shader,
        UNIFORMS({ "uPv", "uTexMain", "uColour", "uPosition" })
 )
 
-mat4 m_projection;
-mat4 m_view;
-mat4 m_mdl;
+m3x3f m_projection;
+m3x3f m_view;
+m3x3f m_mdl;
 
 int main( int argc, char *argv[] )
 {
@@ -151,7 +153,7 @@ static struct
        fishes[ 20 ];
        int num_fishes;
        
-       vec3 origin;
+       v2f origin;
        struct cell *selected;
        int select_valid;
        int playing;
@@ -196,21 +198,21 @@ static void map_free(void)
        map.io = NULL;
 }
 
-static struct cell *map_tile( int pos[2] )
+static struct cell *ptile( int pos[2] )
 {
        return map.cells + pos[1]*map.x + pos[0];
 }
 
-static struct cell *map_tile_at( int pos[2] )
+static struct cell *gettile( int pos[2] )
 {
        if( pos[0] >= 0 && pos[0] < map.x && pos[1] >= 0 && pos[1] < map.y )
                return map.cells + pos[1]*map.x + pos[0];
        return NULL;
 }
 
-static struct cell *map_tile_at_cond( int pos[2], u32 flags )
+static struct cell *getiftile( int pos[2], u32 flags )
 {
-       struct cell *cell = map_tile_at( pos );
+       struct cell *cell = gettile( pos );
        if( cell && (cell->flags & flags) )
                return cell;
                
@@ -250,7 +252,7 @@ static struct cell *map_stack_next(void)
                if( frame->i < 3 )
                {
                        int *dir = output_dirs[ frame->i ];
-                       tile = map_tile_at_cond( (int[2]){frame->x+dir[0], frame->y+dir[1]}, CELL_FLAG_WALKABLE );
+                       tile = getiftile( (int[2]){frame->x+dir[0], frame->y+dir[1]}, CELL_FLAG_WALKABLE );
 
                        if( tile && !(tile->flags & CELL_FLAG_VISITED) )
                        {
@@ -318,10 +320,10 @@ static void map_update_visual(void)
                        {
                                struct cell *a, *b, *c, *d;
                                
-                               a = map_tile_at_cond( (int[2]){ x,y+1 }, CELL_FLAG_WALKABLE );
-                               b = map_tile_at_cond( (int[2]){ x+1,y }, CELL_FLAG_WALKABLE );
-                               c = map_tile_at_cond( (int[2]){ x,y-1 }, CELL_FLAG_WALKABLE );
-                               d = map_tile_at_cond( (int[2]){ x-1,y }, CELL_FLAG_WALKABLE );
+                               a = getiftile( (int[2]){ x,y+1 }, CELL_FLAG_WALKABLE );
+                               b = getiftile( (int[2]){ x+1,y }, CELL_FLAG_WALKABLE );
+                               c = getiftile( (int[2]){ x,y-1 }, CELL_FLAG_WALKABLE );
+                               d = getiftile( (int[2]){ x-1,y }, CELL_FLAG_WALKABLE );
                                
                                u32 config = (a?0x1:0x0) | (b?0x2:0x0) | (c?0x4:0x0) | (d?0x8:0x0);
                                cellbytes[ 0 ] = config;
@@ -347,7 +349,7 @@ static void map_update_visual(void)
                {
                        map_tile_coords_from_index( map.io[i], inputcoord );
                        map_stack_init( inputcoord );
-                       struct cell *cell = map_tile_at( inputcoord );
+                       struct cell *cell = gettile( inputcoord );
                        
                        int cr[2];
                        
@@ -362,9 +364,9 @@ static void map_update_visual(void)
                                int outrate = outflow == 128? k_rate_flow: 0;
                                
                                struct cell *a, *b, *d;
-                               a = map_tile( (int[2]){ cr[0], cr[1]+1 } );
-                               b = map_tile( (int[2]){ cr[0]+1, cr[1] } );
-                               d = map_tile( (int[2]){ cr[0]-1, cr[1] } );
+                               a = gettile( (int[2]){ cr[0], cr[1]+1 } );
+                               b = gettile( (int[2]){ cr[0]+1, cr[1] } );
+                               d = gettile( (int[2]){ cr[0]-1, cr[1] } );
                        
                                int compute_l = 0, compute_r = 0;
                        
@@ -423,7 +425,7 @@ static int map_load( const char *str )
 {
        map_free();
 
-       char *c = str;
+       char const *c = str;
        
        // Scan for width
        for(;; map.x ++)
@@ -538,7 +540,7 @@ static int map_load( const char *str )
        
        // Origin top left corner
        map.origin[0] = -((float)map.x) * 0.5f;
-       map.origin[2] = -((float)map.y) * 0.5f;
+       map.origin[1] = -((float)map.y) * 0.5f;
        
        float *offset_array = (float *)malloc( map.x*map.y*2*sizeof(float) );
        
@@ -560,34 +562,24 @@ static int map_load( const char *str )
        return 1;
 }
 
+// Determines if tile at position co is contentious
 static int map_tile_availible( int co[2] )
 {
-       // Extract 5x5 grid surrounding tile
+       // Extract tiles area of influence as a 5x5 grid in bitfield format
        u32 blob = 0x1000;
        for( int y = vg_max( co[1]-2, 0 ); y < vg_min( map.y, co[1]+3 ); y ++ )
                for( int x = vg_max( co[0]-2, 0 ); x < vg_min( map.x, co[0]+3 ); x ++ )
-               {                               
-                       struct cell *cell = map_tile( (int[2]){ x, y } );
-                       
-                       if( cell && (cell->flags & CELL_FLAG_WALKABLE) )
+                       if( getiftile( (int[2]){ x, y }, CELL_FLAG_WALKABLE ) )
                                blob |= 0x1 << ((y-(co[1]-2))*5 + x-(co[0]-2));
-               }
        
        // Run filter over center 3x3 grid to check for invalid configurations
+       // The kernel codes both the offsets for reaching each tile inside it, as well as the offsets
+       // to move the kernel as a whole.
        int kernel[] = { 0, 1, 2, 5, 6, 7, 10, 11, 12 };
        for( int i = 0; i < vg_list_size(kernel); i ++ )
-       {
                if( blob & (0x1 << (6+kernel[i])) )
                {
-                       // (reference window: 0x1CE7) Illegal moves
-                       //  0100011100010 ;
-                       //  0000001100011 ;
-                       //  0000011000110 ;
-                       //  0110001100000 ;
-                       //  1100011000000 ;
-                       //  0100001100010 ;
-                       //  0100011000010 ;
-               
+                       // Illegal moves list in bitfield format
                        u32 invalid[] = { 0x8E2, 0x63, 0xC6, 0xC60, 0x18C0, 0x862, 0x8C2 };
                        u32 window = blob >> kernel[i];
                        
@@ -595,7 +587,6 @@ static int map_tile_availible( int co[2] )
                                if((window & invalid[j]) == invalid[j])
                                        return 0;
                }
-       }
        
        return 1;
 }
@@ -605,13 +596,11 @@ void vg_update(void)
        // Update camera
        float ratio = (float)vg_window_y / (float)vg_window_x;
        float const size = 7.5f;
-       glm_ortho( -size, size, -size*ratio, size*ratio, 0.01f, 150.f, m_projection );
-
-       glm_mat4_identity( m_view );
-       glm_translate_z( m_view, -10.f );
-       glm_rotate_x( m_view, 1.5708f, m_view );
        
-       glm_mat4_mul( m_projection, m_view, vg_pv );
+       m3x3_projection( m_projection, -size, size, size*ratio, -size*ratio );
+       m3x3_identity( m_view );
+       m3x3_mul( m_projection, m_view, vg_pv );
+       vg_projection_update();
        
        // Compute map update
        for( int y = 0; y < map.y; y ++ )
@@ -619,18 +608,18 @@ void vg_update(void)
                for( int x = 0; x < map.x; x ++ )
                {
                        struct cell *tile, *upper, *lower, *l, *r;      
-                       tile = map_tile_at( (int [2]){ x, y } );
+                       tile = gettile( (int [2]){ x, y } );
                        tile->flags &= ~(CELL_FLAG_SPLIT|CELL_FLAG_MERGE|CELL_FLAG_UPLVL);
                        
                        if( tile->flags & CELL_FLAG_WALKABLE )
                        {
-                               r = map_tile_at_cond( (int[2]){ x+1, y }, CELL_FLAG_WALKABLE );
-                               l = map_tile_at_cond( (int[2]){ x-1, y }, CELL_FLAG_WALKABLE );
+                               r = getiftile( (int[2]){ x+1, y }, CELL_FLAG_WALKABLE );
+                               l = getiftile( (int[2]){ x-1, y }, CELL_FLAG_WALKABLE );
 
                                if( r && l )
                                {
-                                       upper = map_tile_at_cond( (int[2]){ x, y-1 }, CELL_FLAG_WALKABLE );
-                                       lower = map_tile_at_cond( (int[2]){ x, y+1 }, CELL_FLAG_WALKABLE );
+                                       upper = getiftile( (int[2]){ x, y-1 }, CELL_FLAG_WALKABLE );
+                                       lower = getiftile( (int[2]){ x, y+1 }, CELL_FLAG_WALKABLE );
                                        
                                        if( upper )
                                        {
@@ -647,170 +636,21 @@ void vg_update(void)
                        }
                }
        }
-       
-       // Compute classification
-       /*
-       map_stack_refresh();
-       
-       for( int i = 0; i < arrlen( map.io ); i ++ )
-       {
-               struct *cell cell = &map.cells[ map.io ];
-               int coords[2];
                
-               if( cell->flags & CELL_FLAG_INPUT )
-               {
-                       map_tile_coords_from_index( map.io, coords );
-                       map_stack_init( coords );
-                       
-                       do
-                       {
-                               if( cell->flags & CELL_FLAG_CONNECTOR )
-                               {
-                                       
-                               }
-                       }
-                       while( (cell = map_stack_next()) );
-               }
-       }*/
-       
-       // Get mouse ray
-       vec3 ray_origin;
-       vec3 ray_dir;
-       
-       mat4 pv_inverse;
-       vec4 vp = { 0.f, 0.f, vg_window_x, vg_window_y };
-       glm_mat4_inv( vg_pv, pv_inverse );
-       glm_unprojecti( (vec3){ vg_mouse_x, vg_window_y-vg_mouse_y, -1.f }, pv_inverse, vp, ray_dir );
-       glm_unprojecti( (vec3){ vg_mouse_x, vg_window_y-vg_mouse_y, 0.f }, pv_inverse, vp, ray_origin );
-       glm_vec3_sub( ray_dir, ray_origin, ray_dir );
-
-       // Get floor tile intersection  
-       float ray_t = -ray_origin[1] / ray_dir[1];
-
-       vec3 tile_pos;
-       glm_vec3_copy( ray_origin, tile_pos );
-       glm_vec3_muladds( ray_dir, ray_t, tile_pos );
-       glm_vec3_sub( tile_pos, map.origin, tile_pos );
+       v2f tile_pos;
+       v2_copy( vg_mouse_ws, tile_pos );
+       v2_sub( tile_pos, map.origin, tile_pos );
        
        int tile_x = floorf( tile_pos[0] );
-       int tile_y = floorf( tile_pos[2] );
+       int tile_y = floorf( tile_pos[1] );
        
-       map.selected = map_tile_at( (int [2]){tile_x, tile_y} );
+       map.selected = ptile( (int [2]){tile_x, tile_y} );
        
        if( map.playing )
        {
-               static int fish_counter = 0;
-               fish_counter ++;
-       
-               if( fish_counter > 20 )
-               {
-                       fish_counter = 0;
-                                               
-                       // Advance characters
-                       for( int i = 0; i < map.num_fishes; i ++ )
-                       {
-                               struct fish *fish = map.fishes + i;
-                               
-                               if( !fish->alive )
-                                       continue;
-                               
-                               struct cell *tile, *next;
-                               tile = map_tile_at( fish->co );
-                               
-                               if( tile->flags & CELL_FLAG_OUTPUT )
-                               {
-                                       vg_info( "Fish got zucced (%d)\n", i );
-                                       fish->alive = 0;
-                                       continue;
-                               }
-                               
-                               int die = 0;
-                               if( tile->flags & CELL_FLAG_SPLIT )
-                               {
-                                       die = 1;
-                                       int new_dir[][2] = { {0,-1},{1,0},{-1,0} };
-                                       int *test_dir;
-                                       
-                                       for( int j = 0; j < 3; j ++ )
-                                       {
-                                               test_dir = new_dir[ tile->state ];
-                                               tile->state = (tile->state+1)%3;
-                                               
-                                               next = map_tile_at( (int[2]){ fish->co[0]+test_dir[0], fish->co[1]+test_dir[1] } );
-                                               if( next && (next->flags & (CELL_FLAG_WALKABLE)) )
-                                               {
-                                                       fish->dir[0] = test_dir[0];
-                                                       fish->dir[1] = test_dir[1];
-                                                       die = 0;
-                                                       break;
-                                               }
-                                       }
-                               }
-                               
-                               next = map_tile_at( (int[2]){ fish->co[0]+fish->dir[0], fish->co[1]+fish->dir[1] } );
-                               if( !next || (next && !(next->flags & CELL_FLAG_WALKABLE)) )
-                               {
-                                       // Try UP
-                                       die = 1;
-                               }
-                               
-                               if( die )
-                               {
-                                       vg_info( "Fish died! (%d)\n", i );
-                                       fish->alive = 0;
-                                       continue;
-                               }
-                               
-                               
-                               fish->co[0] += fish->dir[0];
-                               fish->co[1] += fish->dir[1];
-                       }
-                       
-                       // Try spawn fish
-                       for( int i = 0; i < arrlen( map.io ); i ++ )
-                       {
-                               struct cell *input = &map.cells[ map.io[i] ];
-                               
-                               if( input->flags & CELL_FLAG_INPUT )
-                               {
-                                       if( input->state < arrlen( input->conditions ) )
-                                       {
-                                               struct fish *fish = &map.fishes[ map.num_fishes ];
-                                               map_tile_coords_from_index( map.io[i], fish->co );
-                                               
-                                               int output_dirs[][2] = { {0,-1}, {-1,0}, {1,0} };
-                                               int can_spawn = 0;
-                                               
-                                               for( int i = 0; i < vg_list_size( output_dirs ); i ++ )
-                                               {
-                                                       int *dir = output_dirs[i];
-                                                       struct cell *next = map_tile_at( (int[2]){ fish->co[0]+dir[0], fish->co[1]+dir[1] } );
-                                                       if( next && next->flags & CELL_FLAG_CANAL )
-                                                       {
-                                                               fish->dir[0] = dir[0];
-                                                               fish->dir[1] = dir[1];
-                                                               can_spawn = 1;
-                                                       }
-                                               }
-                                               
-                                               if( can_spawn )
-                                               {
-                                                       fish->alive = 1;
-                                                       input->state ++;
-                                                       map.num_fishes ++;
-                                               }
-                                       }
-                               }
-                       }
-                       
-                       vg_info( "There are now %u active fish\n", map.num_fishes );
-               }
-               
                if( vg_get_button_down( "go" ) )
                {
                        map.playing = 0;
-                       map.num_fishes = 0;
-                       
                        vg_info( "Ending!\n" );
                }
        }
@@ -819,11 +659,6 @@ void vg_update(void)
                if( vg_get_button_down( "go" ) )
                {
                        map.playing = 1;
-                       
-                       // Reset everything
-                       for( int i = 0; i < map.x*map.y; i ++ )
-                               map.cells[ i ].state = 0;
-                       
                        vg_info( "Starting!\n" );
                }
        
@@ -866,7 +701,7 @@ void vg_render(void)
        map_update_visual();
        
        SHADER_USE( tilemap_shader );
-       glUniformMatrix4fv( SHADER_UNIFORM( tilemap_shader, "uPv" ), 1, GL_FALSE, (float *)vg_pv );
+       glUniformMatrix3fv( SHADER_UNIFORM( tilemap_shader, "uPv" ), 1, GL_FALSE, (float *)vg_pv );
        
        glUniform1i( SHADER_UNIFORM( tilemap_shader, "uTexTiles" ), 0 );
        glActiveTexture( GL_TEXTURE0 );
@@ -876,13 +711,14 @@ void vg_render(void)
        glActiveTexture( GL_TEXTURE1 );
        glBindTexture( GL_TEXTURE_2D, map.flow_texture );
        
-       glUniform2f( SHADER_UNIFORM( tilemap_shader, "uOrigin" ), map.origin[0], map.origin[2] );
+       glUniform2fv( SHADER_UNIFORM( tilemap_shader, "uOrigin" ), 1, map.origin );
        glUniform1f( SHADER_UNIFORM( tilemap_shader, "uTime" ), vg_time * 0.5f );
        
        glDrawArraysInstanced( GL_TRIANGLES, 0, 6, map.x*map.y );
        
+       /*
        SHADER_USE( fish_shader );
-       glUniformMatrix4fv( SHADER_UNIFORM( fish_shader, "uPv" ), 1, GL_FALSE, (float *)vg_pv );
+       glUniformMatrix3fv( SHADER_UNIFORM( fish_shader, "uPv" ), 1, GL_FALSE, (float *)vg_pv );
        glUniform1i( SHADER_UNIFORM( fish_shader, "uTexMain" ), 0 );
        glActiveTexture( GL_TEXTURE0 );
        glBindTexture( GL_TEXTURE_2D, fish_texture );
@@ -896,6 +732,7 @@ void vg_render(void)
        glDrawArrays( GL_TRIANGLES, 0, 6 );
        
        glDisable( GL_BLEND );
+       */
 }
 
 void vg_register(void)