--- /dev/null
+// Copyright (C) 2021 Harry Godden (hgn) - All Rights Reserved
+
+//#define VG_STEAM
+#include "vg/vg.h"
+
+SHADER_DEFINE( shader_tile_colour,
+
+ // VERTEX
+ "layout (location=0) in vec2 a_co;"
+ "uniform mat3 uPv;"
+ "uniform vec2 uOffset;"
+ ""
+ "void main()"
+ "{"
+ "gl_Position = vec4( uPv * vec3( a_co + uOffset, 1.0 ), 1.0 );"
+ "}",
+
+ // FRAGMENT
+ "out vec4 FragColor;"
+ "uniform vec4 uColour;"
+ ""
+ "void main()"
+ "{"
+ "FragColor = uColour;"
+ "}"
+ ,
+ UNIFORMS({ "uPv", "uOffset", "uColour" })
+)
+
+m3x3f m_projection;
+m3x3f m_view;
+m3x3f m_mdl;
+
+#define FLAG_INPUT 0x1
+#define FLAG_OUTPUT 0x2
+#define FLAG_CANAL 0x4
+#define FLAG_WALL 0x8
+
+struct world
+{
+ struct cell
+ {
+ u32 state;
+ }
+ *data;
+
+ struct cell_terminal
+ {
+ char *conditions;
+ int id;
+ }
+ *io;
+
+ u32 w, h;
+
+ GLuint tile_vao;
+ GLuint tile_vbo;
+
+ int selected;
+} world = {};
+
+static void map_free(void)
+{
+ for( int i = 0; i < arrlen( world.io ); i ++ )
+ arrfree( world.io[ i ].conditions );
+
+ arrfree( world.data );
+ arrfree( world.io );
+
+ world.w = 0;
+ world.h = 0;
+ world.data = NULL;
+ world.io = NULL;
+}
+
+static int map_load( const char *str )
+{
+ map_free();
+
+ char const *c = str;
+
+ // Scan for width
+ for(;; world.w ++)
+ {
+ if( str[world.w] == ';' )
+ break;
+ else if( !str[world.w] )
+ {
+ vg_error( "Unexpected EOF when parsing level\n" );
+ return 0;
+ }
+ }
+
+ struct cell *row = arraddnptr( world.data, world.w );
+ int cx = 0;
+ int reg_start = 0, reg_end = 0;
+
+ for(;;)
+ {
+ if( !*c )
+ break;
+
+ if( *c == ';' )
+ {
+ c ++;
+
+ // Parse attribs
+ if( *c != '\n' )
+ {
+ while( *c )
+ {
+ if( reg_start < reg_end )
+ {
+ if( *c >= 'a' && *c <= 'z' )
+ {
+ arrpush( world.io[ reg_start ].conditions, *c );
+ }
+ else
+ {
+ if( *c == ',' || *c == '\n' )
+ {
+ reg_start ++;
+
+ if( *c == '\n' )
+ break;
+ }
+ else
+ {
+ vg_error( "Unkown attribute '%c' (row: %u)\n", *c, world.h );
+ return 0;
+ }
+ }
+ }
+ else
+ {
+ vg_error( "Too many values to assign (row: %u)\n", world.h );
+ return 0;
+ }
+
+ c ++;
+ }
+ }
+
+ if( reg_start != reg_end )
+ {
+ vg_error( "Not enough values assigned (row: %u, %u of %u)\n", world.h, reg_start, reg_end );
+ return 0;
+ }
+
+ if( cx != world.w )
+ {
+ vg_error( "Not enough cells to match previous row definition (row: %u, %u<%u)\n", world.h, cx, world.w );
+ return 0;
+ }
+
+ row = arraddnptr( world.data, world.w );
+ cx = 0;
+ world.h ++;
+ reg_end = reg_start = arrlen( world.io );
+ }
+ else
+ {
+ if( cx == world.w )
+ {
+ vg_error( "Too many cells to match previous row definition (row: %u, %u>%u)\n", world.h, cx, world.w );
+ return 0;
+ }
+
+ // Tile initialization
+ // row[ cx ] .. etc
+
+ if( *c == '+' || *c == '-' )
+ {
+ struct cell_terminal term = { .id = cx + world.h*world.w };
+ arrpush( world.io, term );
+ row[ cx ++ ].state = *c == '+'? FLAG_INPUT: FLAG_OUTPUT;
+ reg_end ++;
+ }
+ else if( *c == '#' )
+ {
+ row[ cx ++ ].state = FLAG_WALL;
+ }
+ else
+ {
+ row[ cx ++ ].state = 0x00;
+ }
+ }
+
+ c ++;
+ }
+
+ vg_success( "Map loaded! (%u:%u)\n", world.w, world.h );
+ return 1;
+}
+
+int main( int argc, char *argv[] )
+{
+ vg_init( argc, argv, "FishLadder" );
+}
+
+void vg_register(void)
+{
+ SHADER_INIT( shader_tile_colour );
+}
+
+void vg_start(void)
+{
+ glGenVertexArrays( 1, &world.tile_vao );
+ glGenBuffers( 1, &world.tile_vbo );
+
+ float quad_mesh[] =
+ {
+ 0.05f, 0.05f, 0.05f, 0.95f, 0.95f, 0.95f,
+ 0.05f, 0.05f, 0.95f, 0.95f, 0.95f, 0.05f
+ };
+
+ glBindVertexArray( world.tile_vao );
+ glBindBuffer( GL_ARRAY_BUFFER, world.tile_vbo );
+ glBufferData
+ (
+ GL_ARRAY_BUFFER,
+ sizeof( quad_mesh ),
+ quad_mesh,
+ GL_STATIC_DRAW
+ );
+
+ glVertexAttribPointer( 0, 2, GL_FLOAT, GL_FALSE, 2 * sizeof(float), (void*)0 );
+ glEnableVertexAttribArray( 0 );
+
+ VG_CHECK_GL();
+
+ map_load
+ (
+ "#############;\n"
+ "###-#####-###;aaa,aa\n"
+ "## ##;\n"
+ "## ##;\n"
+ "## ##;\n"
+ "## ##;\n"
+ "## ##;\n"
+ "## ##;\n"
+ "###+#####+###;aa,aaa\n"
+ "#############;\n"
+ );
+}
+
+void vg_free(void)
+{
+ glDeleteVertexArrays( 1, &world.tile_vao );
+ glDeleteBuffers( 1, &world.tile_vbo );
+
+ map_free();
+}
+
+void vg_update(void)
+{
+ float ratio = (float)vg_window_y / (float)vg_window_x;
+ float const size = 9.5f;
+
+ v3f origin;
+ origin[0] = -0.5f * world.w;
+ origin[1] = -0.5f * world.h;
+ origin[2] = 0.0f;
+
+ m3x3_projection( m_projection, -size, size, size*ratio, -size*ratio );
+ m3x3_identity( m_view );
+ m3x3_translate( m_view, origin );
+ m3x3_mul( m_projection, m_view, vg_pv );
+ vg_projection_update();
+
+ v2f tile_pos;
+ v2_copy( vg_mouse_ws, tile_pos );
+
+ int tile_x = floorf( tile_pos[0] );
+ int tile_y = floorf( tile_pos[1] );
+
+ if( tile_x >= 0 && tile_x < world.w && tile_y >= 0 && tile_y <= world.h )
+ world.selected = tile_y * world.w + tile_x;
+ else
+ world.selected = -1;
+}
+
+void vg_render(void)
+{
+ glViewport( 0,0, vg_window_x, vg_window_y );
+
+ glDisable( GL_DEPTH_TEST );
+ glClearColor( 0.01f, 0.01f, 0.01f, 1.0f );
+ glClear( GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT );
+
+ glBindVertexArray( world.tile_vao );
+ SHADER_USE( shader_tile_colour );
+ glUniformMatrix3fv( SHADER_UNIFORM( shader_tile_colour, "uPv" ), 1, GL_FALSE, (float *)vg_pv );
+
+ for( int y = 0; y < world.h; y ++ )
+ {
+ for( int x = 0; x < world.w; x ++ )
+ {
+ glUniform2f( SHADER_UNIFORM( shader_tile_colour, "uOffset" ), (float)x, (float)y );
+
+ v4f colour;
+
+ struct cell *cell = &world.data[y*world.w+x];
+
+ if( cell->state & FLAG_WALL ) { v4_copy( (v4f){ 0.4f, 0.4f, 0.4f, 1.0f }, colour ); }
+ else if( cell->state & FLAG_CANAL ) { v4_copy( (v4f){ 0.6f, 0.6f, 0.6f, 1.0f }, colour ); }
+ else if( cell->state & FLAG_INPUT ) { v4_copy( (v4f){ 0.2f, 0.3f, 0.7f, 1.0f }, colour ); }
+ else if( cell->state & FLAG_OUTPUT ) { v4_copy( (v4f){ 0.2f, 0.7f, 0.3f, 1.0f }, colour ); }
+ else v4_copy( (v4f){ 0.9f, 0.9f, 0.9f, 1.0f }, colour );
+
+ if( world.selected == y*world.w + x )
+ v3_muls( colour, sinf( vg_time )*0.25f + 0.5f, colour );
+
+ glUniform4fv( SHADER_UNIFORM( shader_tile_colour, "uColour" ), 1, colour );
+
+ glDrawArrays( GL_TRIANGLES, 0, 6 );
+ }
+ }
+}
+
+void vg_ui(void){}
projects / fishladder.git / commitdiff