+ fish->state = k_fish_state_soon_alive;
+ fish->payload = target_peice->cc;
+
+ if( target_peice->config != k_cell_type_stub )
+ {
+ struct cell_description *desc = &cell_descriptions[ target_peice->config ];
+ v2i_copy( desc->start, fish->dir );
+ fish->flow_reversed = 1;
+
+ world.num_fishes ++;
+ alive_count ++;
+ }
+ }
+ else
+ {
+ if( trigger_id )
+ target_peice->state |= FLAG_FLIP_FLOP;
+ else
+ target_peice->state &= ~FLAG_FLIP_FLOP;
+ }
+
+ cell_current->state |= FLAG_TRIGGERED;
+ }
+ }
+ }
+
+ // Third pass (collisions)
+ struct fish *fi, *fj;
+
+ for( int i = 0; i < world.num_fishes; i ++ )
+ {
+ fi = &world.fishes[i];
+
+ if( fi->state == k_fish_state_alive )
+ {
+ int continue_again = 0;
+
+ for( int j = i+1; j < world.num_fishes; j ++ )
+ {
+ fj = &world.fishes[j];
+
+ if( fj->state == k_fish_state_alive )
+ {
+ v2i fi_prev;
+ v2i fj_prev;
+
+ v2i_sub( fi->pos, fi->dir, fi_prev );
+ v2i_sub( fj->pos, fj->dir, fj_prev );
+
+ int
+ collide_next_frame = (
+ (fi->pos[0] == fj->pos[0]) &&
+ (fi->pos[1] == fj->pos[1]))? 1: 0,
+ collide_this_frame = (
+ (fi_prev[0] == fj->pos[0]) &&
+ (fi_prev[1] == fj->pos[1]) &&
+ (fj_prev[0] == fi->pos[0]) &&
+ (fj_prev[1] == fi->pos[1])
+ )? 1: 0;
+
+ if( collide_next_frame || collide_this_frame )
+ {
+ #ifdef VG_STEAM
+ sw_set_achievement( "BANG" );
+ #endif
+
+ // Shatter death (+0.5s)
+ float death_time = world.sim_internal_time + ( collide_this_frame? 0.0f: 0.5f );
+
+ fi->state = k_fish_state_soon_dead;
+ fj->state = k_fish_state_soon_dead;
+ fi->death_time = death_time;
+ fj->death_time = death_time;
+
+ continue_again = 1;
+ break;
+ }
+ }
+ }
+ if( continue_again )
+ continue;
+ }
+ }
+
+ // Spawn fishes
+ for( int i = 0; i < arrlen( world.io ); i ++ )
+ {
+ struct cell_terminal *term = &world.io[ i ];
+ int is_input = pcell(term->pos)->state & FLAG_INPUT;
+
+ if( is_input )
+ {
+ if( world.sim_frame < term->runs[ world.sim_run ].condition_count )
+ {
+ char emit = term->runs[ world.sim_run ].conditions[ world.sim_frame ];
+ if( emit == ' ' )
+ continue;
+
+ struct fish *fish = &world.fishes[ world.num_fishes ];
+ v2i_copy( term->pos, fish->pos );
+
+ fish->state = k_fish_state_alive;
+ fish->payload = emit;
+
+ struct cell *cell_ptr = pcell( fish->pos );
+
+ if( cell_ptr->config != k_cell_type_stub )
+ {
+ struct cell_description *desc = &cell_descriptions[ cell_ptr->config ];
+
+ v2i_copy( desc->start, fish->dir );
+ fish->flow_reversed = 1;
+
+ world.num_fishes ++;
+ alive_count ++;
+ }
+ }
+ }
+ }
+
+ if( alive_count == 0 )
+ {
+ world.completed = 1;
+
+ for( int i = 0; i < arrlen( world.io ); i ++ )
+ {
+ struct cell_terminal *term = &world.io[ i ];
+
+ if( pcell(term->pos)->state & FLAG_OUTPUT )
+ {
+ struct terminal_run *run = &term->runs[ world.sim_run ];
+
+ if( run->recv_count == run->condition_count )
+ {
+ for( int j = 0; j < run->condition_count; j ++ )
+ {
+ if( run->recieved[j] != run->conditions[j] )
+ {
+ world.completed = 0;
+ break;
+ }
+ }
+ }
+ else
+ {
+ world.completed = 0;
+ break;
+ }
+ }
+ }
+
+ if( world.completed )
+ {
+ if( world.sim_run < world.max_runs-1 )
+ {
+ vg_success( "Run passed, starting next\n" );
+ world.sim_run ++;
+ world.sim_frame = 0;
+ world.sim_target = 0;
+ world.num_fishes = 0;
+
+ // Reset timing reference points
+ world.sim_delta_ref = vg_time;
+ world.sim_internal_ref = 0.0f;
+
+ if( world.st.buttons[ k_world_button_pause ].state )
+ world.pause_offset_target = 0.5f;
+ else
+ world.pause_offset_target = 0.0f;
+
+ world.sim_internal_time = 0.0f;
+
+ for( int i = 0; i < world.w*world.h; i ++ )
+ world.data[ i ].state &= ~FLAG_FLIP_FLOP;
+
+ continue;
+ }
+ else
+ {
+ vg_success( "Level passed!\n" );
+
+ u32 score = 0;
+ for( int i = 0; i < world.w*world.h; i ++ )
+ if( world.data[ i ].state & FLAG_CANAL )
+ score ++;
+
+ world.score = score;
+ world.time = world.sim_frame;
+
+ // Copy into career data
+ if( world.pCmpLevel )
+ {
+ career_pass_level( world.pCmpLevel, world.score, 1 );
+ }
+
+ sfx_set_play( &audio_tones, &audio_system_balls_extra, 9 );
+ failure_this_frame = 0;
+ success_this_frame = 0;
+ }
+ }
+ else
+ {
+ #ifdef VG_STEAM
+ if( world.sim_run > 0 )
+ sw_set_achievement( "GOOD_ENOUGH" );
+ #endif
+
+ vg_error( "Level failed :(\n" );
+ }
+
+ simulation_stop();
+ break;
+ }
+
+ world.sim_frame ++;
+ }
+
+ // Sounds
+ if( failure_this_frame )
+ {
+ sfx_set_play( &audio_tones, &audio_system_balls_extra, 0 );
+ }
+ else if( success_this_frame )
+ {
+ static int succes_counter = 0;
+
+ sfx_set_play( &audio_tones, &audio_system_balls_extra, 1+(succes_counter++) );
+
+ if( succes_counter == 7 )
+ succes_counter = 0;
+ }
+
+ // Position update
+ // =====================================================================================================
+
+ world.frame_lerp = world.sim_internal_time - floorf( world.sim_internal_time );
+
+ for( int i = 0; i < world.num_fishes; i ++ )
+ {
+ struct fish *fish = &world.fishes[i];
+
+ if( fish->state == k_fish_state_dead )
+ continue;
+
+ if( fish->state == k_fish_state_soon_dead && (world.sim_internal_time > fish->death_time) )
+ continue; // Todo: particle thing?
+
+ struct cell *cell = pcell(fish->pos);
+ struct cell_description *desc = &cell_descriptions[ cell->config ];
+
+ v2f const *curve;
+
+ float t = world.frame_lerp;
+ if( fish->flow_reversed && !desc->is_linear )
+ t = 1.0f-t;
+
+ v2_copy( fish->physics_co, fish->physics_v );
+
+ switch( cell->config )
+ {
+ case k_cell_type_merge:
+ if( fish->dir[0] == 1 )
+ curve = curve_12;
+ else
+ curve = curve_9;
+ break;
+ case k_cell_type_con_r: curve = curve_1; break;
+ case k_cell_type_con_l: curve = curve_4; break;
+ case k_cell_type_con_u: curve = curve_2; break;
+ case k_cell_type_con_d: curve = curve_8; break;
+ case 3: curve = curve_3; break;
+ case 6: curve = curve_6; break;
+ case 9: curve = curve_9; break;
+ case 12: curve = curve_12; break;
+ case 7:
+ if( t > curve_7_linear_section )
+ {
+ t -= curve_7_linear_section;
+ t *= (1.0f/(1.0f-curve_7_linear_section));
+
+ curve = cell->state & FLAG_FLIP_FLOP? curve_7: curve_7_1;
+ }
+ else curve = NULL;
+ break;
+ default: curve = NULL; break;
+ }
+
+ if( curve )
+ {
+ float t2 = t * t;
+ float t3 = t * t * t;
+
+ float cA = 3.0f*t2 - 3.0f*t3;
+ float cB = 3.0f*t3 - 6.0f*t2 + 3.0f*t;
+ float cC = 3.0f*t2 - t3 - 3.0f*t + 1.0f;
+
+ fish->physics_co[0] = t3*curve[3][0] + cA*curve[2][0] + cB*curve[1][0] + cC*curve[0][0];
+ fish->physics_co[1] = t3*curve[3][1] + cA*curve[2][1] + cB*curve[1][1] + cC*curve[0][1];
+ fish->physics_co[0] += (float)fish->pos[0];
+ fish->physics_co[1] += (float)fish->pos[1];
+ }
+ else
+ {
+ v2f origin;
+ origin[0] = (float)fish->pos[0] + (float)fish->dir[0]*-0.5f + 0.5f;
+ origin[1] = (float)fish->pos[1] + (float)fish->dir[1]*-0.5f + 0.5f;
+
+ fish->physics_co[0] = origin[0] + (float)fish->dir[0]*t;
+ fish->physics_co[1] = origin[1] + (float)fish->dir[1]*t;
+ }
+
+ v2_sub( fish->physics_co, fish->physics_v, fish->physics_v );
+ v2_divs( fish->physics_v, world.sim_internal_delta, fish->physics_v );
+ }
+ }
+}
+
+static void render_tiles( v2i start, v2i end, v4f const regular_colour, v4f const selected_colour )
+{
+ v2i full_start = { 0,0 };
+ v2i full_end = { world.w, world.h };
+
+ if( !start || !end )
+ {
+ start = full_start;
+ end = full_end;
+ }
+
+ glUniform4fv( SHADER_UNIFORM( shader_tile_main, "uColour" ), 1, regular_colour );
+
+ for( int y = start[1]; y < end[1]; y ++ )
+ {
+ for( int x = start[0]; x < end[0]; x ++ )
+ {
+ struct cell *cell = pcell((v2i){x,y});
+ int selected = world.selected == y*world.w + x;
+
+ int tile_offsets[][2] =
+ {
+ {2, 0}, {0, 3}, {0, 2}, {2, 2},
+ {1, 0}, {2, 3}, {3, 2}, {1, 3},
+ {3, 1}, {0, 1}, {1, 2}, {2, 1},
+ {1, 1}, {3, 3}, {2, 1}, {2, 1}
+ };
+
+ int uv[2] = { 3, 0 };
+
+ if( cell->state & (FLAG_CANAL|FLAG_INPUT|FLAG_OUTPUT|FLAG_EMITTER) )
+ {
+ uv[0] = tile_offsets[ cell->config ][0];
+ uv[1] = tile_offsets[ cell->config ][1];
+ } else continue;
+
+ glUniform4f( SHADER_UNIFORM( shader_tile_main, "uOffset" ), (float)x, (float)y, uv[0], uv[1] );
+ if( selected )
+ {
+ glUniform4fv( SHADER_UNIFORM( shader_tile_main, "uColour" ), 1, selected_colour );
+ draw_mesh( 0, 2 );
+ glUniform4fv( SHADER_UNIFORM( shader_tile_main, "uColour" ), 1, regular_colour );
+ }
+ else
+ draw_mesh( 0, 2 );
+ }
+ }
+}
+
+static int world_button_exec( struct world_button *btn, v2f texture, v3f colour, enum world_button_status *status )
+{
+ static v2i click_grab = { -9999, -9999 };
+
+ // Reset click_grab
+ if( !btn )
+ {
+ click_grab[0] = -9999;
+ click_grab[1] = -9999;
+ return 0;
+ }
+
+ v2i click_tile = { world.tile_x, world.tile_y };
+
+ int triggered = 0;
+ int is_hovering = v2i_eq( click_tile, btn->position );
+
+ // Set up light targets before logic runs
+ if( btn->state )
+ btn->light_target = is_hovering? 0.9f: 0.8f;
+ else
+ btn->light_target = is_hovering? 0.2f: 0.0f;
+
+ if( vg_get_button( "primary" ) && is_hovering )
+ btn->light_target = 1.0f;
+
+ // Process click action
+ if( is_hovering )
+ {
+ if( vg_get_button_down( "primary" ) && is_hovering )
+ v2i_copy( click_tile, click_grab );
+ else if( v2i_eq( click_grab, click_tile ) && vg_get_button_up( "primary" ) )
+ {
+ // Click event
+ *status = btn->state? k_world_button_on_disable: k_world_button_on_enable;
+
+ if( btn->mode == k_world_button_mode_toggle )
+ btn->state ^= 0x1;
+
+ sfx_set_play( &audio_clicks, &audio_system_ui, btn->state? 1:0 );
+ triggered = 1;
+ }
+ }
+
+ // Drawing stage
+ v4f final_colour;
+
+ btn->light = vg_lerpf( btn->light, btn->light_target + btn->extra_light, vg_time_delta*26.0f );
+
+ v3_copy( colour, final_colour );
+ final_colour[3] = btn->light;
+
+ glUniform4f( SHADER_UNIFORM( shader_buttons, "uOffset" ),
+ btn->position[0],
+ btn->position[1],
+ texture[0],
+ texture[1]
+ );
+ glUniform4fv( SHADER_UNIFORM( shader_buttons, "uColour" ), 1, final_colour );
+ draw_mesh( 0, 2 );
+
+ return triggered;
+}
+
+static void level_selection_buttons(void)
+{
+ v3f tutorial_colour = { 0.204f, 0.345f, 0.553f };
+ v3f locked_colour = { 0.2f, 0.2f, 0.2f };
+
+ struct cmp_level *switch_level_to = NULL;
+
+ for( int i = 0; i < vg_list_size( career_packs ); i ++ )
+ {
+ struct career_level_pack *grid = &career_packs[i];
+
+ for( int j = 0; j < grid->count; j ++ )
+ {
+ struct cmp_level *lvl = &grid->pack[ j ];
+
+ if( world.pCmpLevel == lvl )
+ lvl->btn.extra_light = 0.35f + fabsf(sinf( vg_time * 2.0f )) * 0.05f;
+ else lvl->btn.extra_light = 0.2f;
+
+ if( lvl->completed_score )
+ lvl->btn.extra_light += 0.8f;
+
+ enum world_button_status status;
+ if( world_button_exec(
+ &lvl->btn,
+ (v2f){0.0f,0.0f},
+ lvl->unlocked? (lvl->is_tutorial? tutorial_colour: grid->primary_colour): locked_colour,
+ &status
+ ))
+ {
+ if( status == k_world_button_on_enable && lvl->unlocked )
+ switch_level_to = lvl;
+ }
+ }
+ }
+
+ if( switch_level_to )
+ {
+ world.st.lvl_to_load = switch_level_to;
+ world.st.lvl_load_time = vg_time + 0.25f;
+ world.st.world_transition = 1.0f;
+
+ /*
+ if( console_changelevel( 1, &switch_level_to->map_name ) )
+ {
+ world.pCmpLevel = switch_level_to;
+ gen_level_text( world.pCmpLevel );
+ }
+ */
+ }
+}
+
+void vg_render(void)
+{
+ glViewport( 0,0, vg_window_x, vg_window_y );
+
+ glDisable( GL_DEPTH_TEST );
+ glClearColor( 0.369768f, 0.3654f, 0.42f, 1.0f );
+ glClear( GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT );
+
+ v4f const colour_default = {1.0f, 1.0f, 1.0f, 1.0f};
+ v4f const colour_selected = {0.90f, 0.92f, 1.0f, 1.0f};
+
+ int const circle_base = 6;
+ int const filled_start = circle_base+0;
+ int const filled_count = circle_base+32;
+ int const empty_start = circle_base+32;
+ int const empty_count = circle_base+32*2;
+
+ if( !world.initialzed )
+ return;
+
+ // BACKGROUND
+ // ========================================================================================================
+ use_mesh( &world.shapes );
+
+ SHADER_USE( shader_background );
+ glUniformMatrix3fv( SHADER_UNIFORM( shader_background, "uPv" ), 1, GL_FALSE, (float *)vg_pv );
+
+ glActiveTexture( GL_TEXTURE0 );
+ glBindTexture( GL_TEXTURE_2D, world.background_data );
+ glUniform1i( SHADER_UNIFORM( shader_background, "uTexMain" ), 0 );
+
+ glUniform3f( SHADER_UNIFORM( shader_background, "uOffset" ), -16, -16, 64 );
+ glUniform1f( SHADER_UNIFORM( shader_background, "uVariance" ), 0.02f );
+
+ glActiveTexture( GL_TEXTURE1 );
+ glBindTexture( GL_TEXTURE_2D, world.random_samples );
+ glUniform1i( SHADER_UNIFORM( shader_background, "uSamplerNoise" ), 1 );
+ glUniform1f( SHADER_UNIFORM( shader_background, "uVisibility" ), 1.0f ); //world.st.world_transition );
+
+ draw_mesh( 0, 2 );
+
+ // TILESET BACKGROUND LAYER
+ // ========================================================================================================
+ use_mesh( &world.shapes );
+ SHADER_USE( shader_tile_main );
+
+ m2x2f subtransform;
+ m2x2_identity( subtransform );
+ glUniformMatrix2fv( SHADER_UNIFORM( shader_tile_main, "uSubTransform" ), 1, GL_FALSE, (float *)subtransform );
+ glUniformMatrix3fv( SHADER_UNIFORM( shader_tile_main, "uPv" ), 1, GL_FALSE, (float *)vg_pv );
+ glUniform1f( SHADER_UNIFORM( shader_tile_main, "uGhost" ), 0.0f );
+ glUniform1f( SHADER_UNIFORM( shader_tile_main, "uForeground" ), 0.0f );
+ glUniform1f( SHADER_UNIFORM( shader_tile_main, "uVisibility" ), world.st.world_transition * 2.0f );
+
+ glEnable(GL_BLEND);
+ glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
+ glBlendEquation(GL_FUNC_ADD);
+
+ // Bind textures
+ vg_tex2d_bind( &tex_tile_data, 0 );
+ glUniform1i( SHADER_UNIFORM( shader_tile_main, "uTexGlyphs" ), 0 );
+
+ vg_tex2d_bind( &tex_wood, 1 );
+ glUniform1i( SHADER_UNIFORM( shader_tile_main, "uTexWood" ), 1 );
+
+ render_tiles( NULL, NULL, colour_default, colour_default );
+
+ // MARBLES
+ // ========================================================================================================
+ SHADER_USE( shader_ball );
+ glUniformMatrix3fv( SHADER_UNIFORM( shader_ball, "uPv" ), 1, GL_FALSE, (float *)vg_pv );
+
+ vg_tex2d_bind( &tex_ball_noise, 0 );
+ glUniform1i( SHADER_UNIFORM( shader_ball, "uTexMain" ), 0 );
+
+ if( world.st.buttons[ k_world_button_sim ].state )
+ {
+ for( int i = 0; i < world.num_fishes; i ++ )
+ {
+ struct fish *fish = &world.fishes[i];
+ v3f render_pos;
+ render_pos[2] = 1.0f;
+
+ if( fish->state == k_fish_state_dead || fish->state == k_fish_state_soon_dead )
+ {
+ float death_anim_time = world.sim_internal_time - fish->death_time;
+
+ // Death animation
+ if( death_anim_time > 0.0f && death_anim_time < 1.0f )
+ {
+ float amt = 1.0f-death_anim_time*death_anim_time;
+
+ v2_muladds( fish->physics_co, fish->physics_v, -1.0f * world.sim_internal_delta * amt, fish->physics_co );
+ render_pos[2] = amt;
+ }
+ else if( world.sim_internal_time > fish->death_time )
+ continue;
+ }
+ else if( fish->state == k_fish_state_bg )
+ continue;
+
+ v2_copy( fish->physics_co, render_pos );
+
+ v4f dot_colour = { 0.0f, 0.0f, 0.0f, 1.0f };
+ colour_code_v3( fish->payload, dot_colour );
+
+ glUniform3fv( SHADER_UNIFORM( shader_ball, "uColour" ), 1, dot_colour );
+ glUniform3fv( SHADER_UNIFORM( shader_ball, "uOffset" ), 1, render_pos );
+ glUniform2f( SHADER_UNIFORM( shader_ball, "uTexOffset" ), (float)i * 1.2334, (float)i * -0.3579f );
+ draw_mesh( 0, 2 );
+ }
+ }
+
+ // TILESET FOREGROUND LAYER
+ // ========================================================================================================
+ SHADER_USE( shader_tile_main );
+
+ // Bind textures
+ vg_tex2d_bind( &tex_tile_data, 0 );
+ glUniform1i( SHADER_UNIFORM( shader_tile_main, "uTexGlyphs" ), 0 );
+
+ vg_tex2d_bind( &tex_wood, 1 );
+ glUniform1i( SHADER_UNIFORM( shader_tile_main, "uTexWood" ), 1 );
+
+ glUniform1f( SHADER_UNIFORM( shader_tile_main, "uForeground" ), 1.0f );
+ render_tiles( NULL, NULL, colour_default, colour_selected );
+
+ // Draw splitters
+ for( int y = 2; y < world.h-2; y ++ )
+ {
+ for( int x = 2; x < world.w-2; x ++ )
+ {
+ struct cell *cell = pcell((v2i){x,y});
+
+ if( cell->state & FLAG_CANAL )
+ {
+ if( cell->config == k_cell_type_split )
+ {
+ float rotation = cell->state & FLAG_FLIP_FLOP? vg_rad( -45.0f ): vg_rad( 45.0f );
+
+ if( cell->state & FLAG_FLIP_ROTATING )
+ {
+ if( (world.frame_lerp > curve_7_linear_section) )
+ {
+ float const rotation_speed = 0.4f;
+ if( (world.frame_lerp < 1.0f-rotation_speed) )
+ {
+ float t = world.frame_lerp - curve_7_linear_section;
+ t *= -2.0f * (1.0f/(1.0f-(curve_7_linear_section+rotation_speed)));
+ t += 1.0f;
+
+ rotation *= t;
+ }
+ else
+ rotation *= -1.0f;
+ }
+ }
+
+ m2x2_create_rotation( subtransform, rotation );
+
+ glUniformMatrix2fv( SHADER_UNIFORM( shader_tile_main, "uSubTransform" ), 1, GL_FALSE, (float *)subtransform );
+ glUniform4f( SHADER_UNIFORM( shader_tile_main, "uOffset" ),
+ (float)x,
+ (float)y + 0.125f,
+ cell->state & FLAG_TARGETED? 3.0f: 0.0f,
+ 0.0f
+ );
+ draw_mesh( 0, 2 );
+ }
+ }
+ }
+ }
+
+ // EDIT OVERLAY
+ // ========================================================================================================
+ if( world.selected != -1 && !(world.data[ world.selected ].state & FLAG_CANAL) && !world.id_drag_from )
+ {
+ v2i new_begin = { world.tile_x - 2, world.tile_y - 2 };
+ v2i new_end = { world.tile_x + 2, world.tile_y + 2 };
+
+ world.data[ world.selected ].state ^= FLAG_CANAL;
+ map_reclassify( new_begin, new_end, 0 );
+
+ m2x2_identity( subtransform );
+ glUniform1f( SHADER_UNIFORM( shader_tile_main, "uGhost" ), 1.0f );
+ glUniformMatrix2fv( SHADER_UNIFORM( shader_tile_main, "uSubTransform" ), 1, GL_FALSE, (float *)subtransform );
+ glUniform2fv( SHADER_UNIFORM( shader_tile_main, "uMousePos" ), 1, world.tile_pos );
+
+ render_tiles( new_begin, new_end, colour_default, colour_default );
+
+ world.data[ world.selected ].state ^= FLAG_CANAL;
+ map_reclassify( new_begin, new_end, 0 );
+ }
+
+ // BUTTONS
+ // ========================================================================================================
+ SHADER_USE( shader_buttons );
+ glUniformMatrix3fv( SHADER_UNIFORM( shader_buttons, "uPv" ), 1, GL_FALSE, (float *)vg_pv );
+
+ vg_tex2d_bind( &tex_buttons, 0 );
+ glUniform1i( SHADER_UNIFORM( shader_buttons, "uTexMain" ), 0 );
+
+ enum world_button_status stat;
+ int world_paused = world.st.buttons[k_world_button_pause].state;
+ int world_running = world.st.buttons[k_world_button_sim].state;
+
+ float sim_icon_x = world_paused? 3.0f: (world_running? 2.0f: 0.0f);
+
+ v3f btn_dark_blue = { 0.204f, 0.345f, 0.553f };
+ v3f btn_orange = { 0.553f, 0.345f, 0.204f };
+
+ if( world_button_exec( &world.st.buttons[k_world_button_sim], (v2f){ sim_icon_x, 3.0f }, btn_dark_blue, &stat ))
+ {
+ if( stat == k_world_button_on_enable )
+ {
+ simulation_start();
+
+ if( world_paused )
+ world.pause_offset_target = 0.5f;
+ }
+ else
+ {
+ if( world_paused )
+ {
+ // Trigger single step
+ world.pause_offset_target += 1.0f;
+ world.st.buttons[k_world_button_sim].state = 1;
+ }
+ else
+ {
+ simulation_stop();
+ }
+ }
+ }
+
+ if( world_button_exec( &world.st.buttons[k_world_button_pause], (v2f){ 1.0f, 3.0f }, btn_dark_blue, &stat ))
+ {
+ world.sim_internal_ref = world.sim_internal_time;
+ world.sim_delta_ref = vg_time;
+
+ if( stat == k_world_button_on_enable )
+ {
+ float time_frac = world.sim_internal_time-floorf(world.sim_internal_time);
+ world.pause_offset_target = 0.5f - time_frac;
+ }
+ else
+ world.pause_offset_target = 0.0f;
+ }
+
+ if( world_button_exec( &world.st.buttons[k_world_button_speedy], (v2f){ 0.0f, 2.0f }, btn_orange, &stat ))
+ {
+ world.sim_delta_speed = stat == k_world_button_on_enable? 10.0f: 2.5f;
+
+ if( !world_paused )
+ {
+ world.sim_delta_ref = vg_time;
+ world.sim_internal_ref = world.sim_internal_time;
+ }
+ }
+
+ if( world_button_exec( &world.st.buttons[k_world_button_settings], (v2f){ 1.0f, 2.0f }, btn_orange, &stat ))
+ {
+ world.st.state = stat == k_world_button_on_enable? k_game_state_settings: k_game_state_main;
+ }
+
+ level_selection_buttons();
+
+ if( vg_get_button_up( "primary" ) )
+ world_button_exec( NULL, NULL, NULL, NULL );
+
+ // TEXT ELEMENTS
+ // ========================================================================================================
+ SHADER_USE( shader_sdf );
+ glBindVertexArray( text_buffers.vao );
+ glUniformMatrix3fv( SHADER_UNIFORM( shader_sdf, "uPv" ), 1, GL_FALSE, (float *)vg_pv );
+
+ vg_tex2d_bind( &tex_ubuntu, 0 );
+ glUniform1i( SHADER_UNIFORM( shader_sdf, "uTexGlyphs" ), 0 );
+
+ glUniform4f( SHADER_UNIFORM( shader_sdf, "uColour" ), 1.0f, 1.0f, 1.0f, 1.0f );
+ glDrawElements( GL_TRIANGLES, text_buffers.title_count*6, GL_UNSIGNED_SHORT, (void*)( text_buffers.title_start*6*sizeof(u16) ) );
+ glDrawElements( GL_TRIANGLES, text_buffers.desc_count*6, GL_UNSIGNED_SHORT, (void*)( text_buffers.desc_start*6*sizeof(u16) ) );
+
+ glUniform4f( SHADER_UNIFORM( shader_sdf, "uColour" ), 1.0f, 1.0f, 1.0f, 0.17f );
+ glDrawElements( GL_TRIANGLES, text_buffers.grid_count*6, GL_UNSIGNED_SHORT, (void*)( text_buffers.grid_start*6*sizeof(u16) ) );
+
+ // WIRES
+ // ========================================================================================================
+ //glDisable(GL_BLEND);
+
+ SHADER_USE( shader_wire );
+ glBindVertexArray( world.wire.vao );
+
+ glUniformMatrix3fv( SHADER_UNIFORM( shader_wire, "uPv" ), 1, GL_FALSE, (float *)vg_pv );
+
+ v4f const wire_left_colour = { 0.5f, 0.5f, 0.5f, 1.0f };
+ v4f const wire_right_colour = { 0.2f, 0.2f, 0.2f, 1.0f };
+ v4f const wire_drag_colour = { 0.2f, 0.2f, 0.2f, 0.6f };
+
+ glUniform1f( SHADER_UNIFORM( shader_wire, "uTime" ), world.frame_lerp );
+ glUniform1f( SHADER_UNIFORM( shader_wire, "uGlow" ), 0.0f );
+
+ if( world.id_drag_from )
+ {
+ glUniform4fv( SHADER_UNIFORM( shader_wire, "uColour" ), 1, wire_drag_colour );
+ glUniform1f( SHADER_UNIFORM( shader_wire, "uCurve" ), 0.4f );
+ glUniform3f( SHADER_UNIFORM( shader_wire, "uStart" ), world.drag_from_co[0], world.drag_from_co[1], 0.20f );
+ glUniform3f( SHADER_UNIFORM( shader_wire, "uEnd" ), world.drag_to_co[0], world.drag_to_co[1], 0.20f );
+ glDrawElements( GL_TRIANGLES, world.wire.em, GL_UNSIGNED_SHORT, (void*)(0) );
+ }
+
+ // Pulling animation
+ float rp_x1 = world.frame_lerp*9.0f;
+ float rp_xa = rp_x1*expf(1.0f-rp_x1)* 0.36f;
+ float rp_x2 = 1.0f-rp_xa;
+
+ for( int y = 2; y < world.h-2; y ++ )
+ {
+ for( int x = 2; x < world.w-2; x ++ )
+ {
+ struct cell *cell = pcell((v2i){x,y});
+
+ if( cell->state & FLAG_CANAL )
+ {
+ if( cell->state & FLAG_IS_TRIGGER )
+ {
+ int trigger_id = cell->links[0]?0:1;
+ struct cell *other_cell = &world.data[ cell->links[ trigger_id ]];
+
+ struct cell_description *desc = &cell_descriptions[ cell->config ];
+
+ int x2 = cell->links[trigger_id] % world.w;
+ int y2 = (cell->links[trigger_id] - x2) / world.w;
+
+ v2f startpoint;
+ v2f endpoint;
+
+ startpoint[0] = (float)x2 + (trigger_id? 0.75f: 0.25f);
+ startpoint[1] = (float)y2 + 0.25f;
+
+ endpoint[0] = x;
+ endpoint[1] = y;
+
+ v2_add( desc->trigger_pos, endpoint, endpoint );
+
+ if( other_cell->state & FLAG_EMITTER )
+ {
+ v4f wire_colour;
+ colour_code_v3( other_cell->cc, wire_colour );
+ wire_colour[3] = 1.0f;
+
+ glUniform4fv( SHADER_UNIFORM( shader_wire, "uColour" ), 1, wire_colour );
+ }
+ else
+ {
+ glUniform4fv( SHADER_UNIFORM( shader_wire, "uColour" ), 1, trigger_id? wire_right_colour: wire_left_colour );
+ }
+
+ glUniform1f( SHADER_UNIFORM( shader_wire, "uCurve" ), cell->state & FLAG_TRIGGERED? rp_x2 * 0.4f: 0.4f );
+ glUniform1f( SHADER_UNIFORM( shader_wire, "uGlow" ), cell->state & FLAG_TRIGGERED? rp_xa: 0.0f );
+ glUniform3f( SHADER_UNIFORM( shader_wire, "uStart" ), startpoint[0], startpoint[1], 0.18f );
+ glUniform3f( SHADER_UNIFORM( shader_wire, "uEnd" ), endpoint[0], endpoint[1], 0.18f );
+ glDrawElements( GL_TRIANGLES, world.wire.em, GL_UNSIGNED_SHORT, (void*)(0) );
+ }
+ }
+ }
+ }
+
+ // WIRE ENDPOINTS
+ // ========================================================================================================
+
+ SHADER_USE( shader_tile_colour );