terrain code works do run

src/data/cube.obj

@@ -10,6 +10,20 @@ v 0.500000 -0.500000 0.500000
 v 0.500000 0.500000 0.500000
 v 0.500000 -0.500000 -0.500000
 v 0.500000 0.500000 -0.500000
+vt 0.625000 0.000000
+vt 0.375000 0.250000
+vt 0.375000 0.000000
+vt 0.625000 0.250000
+vt 0.375000 0.500000
+vt 0.625000 0.500000
+vt 0.375000 0.750000
+vt 0.625000 0.750000
+vt 0.375000 1.000000
+vt 0.125000 0.750000
+vt 0.125000 0.500000
+vt 0.875000 0.500000
+vt 0.625000 1.000000
+vt 0.875000 0.750000
 vn -1.0000 0.0000 0.0000
 vn 0.0000 0.0000 -1.0000
 vn 1.0000 0.0000 0.0000
@@ -18,9 +32,15 @@ vn 0.0000 -1.0000 0.0000
 vn 0.0000 1.0000 0.0000
 usemtl None
 s off
-f 1//1 2//1 4//1 3//1
-f 3//2 4//2 8//2 7//2
-f 7//3 8//3 6//3 5//3
-f 5//4 6//4 2//4 1//4
-f 3//5 7//5 5//5 1//5
-f 8//6 4//6 2//6 6//6
+f 2/1/1 3/2/1 1/3/1
+f 4/4/2 7/5/2 3/2/2
+f 8/6/3 5/7/3 7/5/3
+f 6/8/4 1/9/4 5/7/4
+f 7/5/5 1/10/5 3/11/5
+f 4/12/6 6/8/6 8/6/6
+f 2/1/1 4/4/1 3/2/1
+f 4/4/2 8/6/2 7/5/2
+f 8/6/3 6/8/3 5/7/3
+f 6/8/4 2/13/4 1/9/4
+f 7/5/5 5/7/5 1/10/5
+f 4/12/6 2/14/6 6/8/6

src/data/cube2.obj

@@ -0,0 +1,51 @@
+# Blender v2.79 (sub 0) OBJ File: ''
+# www.blender.org
+mtllib cube2.mtl
+o Cube_Cube.001
+v -0.500000 -0.500000 0.500000
+v -0.500000 0.500000 0.500000
+v -0.500000 -0.500000 -0.500000
+v -0.500000 0.500000 -0.500000
+v 0.500000 -0.500000 0.500000
+v 0.500000 0.500000 0.500000
+v 0.500000 -0.500000 -0.500000
+v 0.500000 0.500000 -0.500000
+vt 0.625000 0.000000
+vt 0.375000 0.250000
+vt 0.375000 0.000000
+vt 0.625000 0.250000
+vt 0.375000 0.500000
+vt 0.625000 0.500000
+vt 0.375000 0.750000
+vt 0.625000 0.750000
+vt 0.375000 1.000000
+vt 0.125000 0.750000
+vt 0.125000 0.500000
+vt 0.875000 0.500000
+vt 0.625000 1.000000
+vt 0.875000 0.750000
+vn -1.0000 0.0000 0.0000
+vn 0.0000 0.0000 -1.0000
+vn 1.0000 0.0000 0.0000
+vn 0.0000 0.0000 1.0000
+vn 0.0000 -1.0000 0.0000
+vn 0.0000 1.0000 0.0000
+usemtl None
+s off
+f 2/1/1 3/2/1 1/3/1
+f 2/1/1 4/4/1 3/2/1
+
+f 4/4/2 7/5/2 3/2/2
+f 4/4/2 8/6/2 7/5/2
+
+f 8/6/3 5/7/3 7/5/3
+f 8/6/3 6/8/3 5/7/3
+
+f 6/8/4 1/9/4 5/7/4
+f 6/8/4 2/13/4 1/9/4
+
+f 7/5/5 1/10/5 3/11/5
+f 7/5/5 5/7/5 1/10/5
+
+f 4/12/6 6/8/6 8/6/6
+f 4/12/6 2/14/6 6/8/6

src/data/rbm.sh

@@ -0,0 +1 @@
+../../cmake-build-debug/rbm_gen $1

src/koa/etc.c

@@ -1,5 +1,17 @@
 #include "etc.h"
 
+int color_eq(color_t a, color_t b) {
+    return color_eqp(&a, &b);
+}
+
+int color_eqp(const color_t* a, const color_t* b) {
+    return
+        (a->r == b->r) &&
+        (a->g == b->g) &&
+        (a->b == b->b) &&
+        (a->a == b->a);
+}
+
 void mfree(int n, ...) {
     va_list args;
     va_start(args, n);

src/koa/etc.h

@@ -9,6 +9,13 @@
 #define __MIN(A, B) ((A) < (B) ? (A) : (B))
 #define __MAX(A, B) ((A) > (B) ? (A) : (B))
 
+typedef struct {
+    uint8_t r, g, b, a;
+} color_t;
+
+int color_eq(color_t, color_t);
+int color_eqp(const color_t*, const color_t*);
+
 void mfree(int n, ...);
 uint8_t* ltoh(uint8_t*, int);
 uint8_t* btoh(uint8_t*, int);

src/koa/file.c

@@ -137,7 +137,7 @@ int bmp_reload_chunk(bmp_t* bmp, int x, int y, int width, int height) {
 
     if(x > data->width || y > data->height) {
         fclose(fp);
-        return NULL;
+        return 0;
     }
 
     if(bmp->pixels != NULL)
@@ -152,9 +152,9 @@ int bmp_reload_chunk(bmp_t* bmp, int x, int y, int width, int height) {
 
     bmp->width = width;
     bmp->height = height;
-    bmp->pixels = malloc(sizeof(pixel_t*) * height);
+    bmp->pixels = malloc(sizeof(color_t*) * height);
     for(int i = 0; i < height; ++i)
-        bmp->pixels[i] = malloc(sizeof(pixel_t) * width);
+        bmp->pixels[i] = malloc(sizeof(color_t) * width);
 
     uint8_t buffer[4];
     for(int ay = 0; ay < height; ++ay) {
@@ -168,10 +168,11 @@ int bmp_reload_chunk(bmp_t* bmp, int x, int y, int width, int height) {
         for(int ax = 0; ax < width; ++ax) {
             fread(buffer, 1, data->bytepp, fp);
 
-            pixel_t* px = &bmp->pixels[ay][ax];
+            color_t* px = &bmp->pixels[ay][ax];
             px->b = buffer[0];
             px->g = buffer[1];
             px->r = buffer[2];
+            px->a = 0xFF;
         }
     }
 

src/koa/file.h

@@ -20,10 +20,6 @@ char* file_read(const char*);
 
 // BEGIN BMP LOADING FUNCTIONS
 
-typedef struct {
-    uint8_t r, g, b;
-} pixel_t;
-
 typedef struct {
     char file[4096];
     uint32_t width, height, size,
@@ -35,7 +31,7 @@ typedef struct {
     bmp_meta_t data;
 
     uint32_t width, height;
-    pixel_t** pixels;
+    color_t** pixels;
 } bmp_t;
 
 bmp_t* bmp_load(const char*);

src/koa/sdl.c

@@ -1,29 +0,0 @@
-#include "sdl.h"
-
-void get_pixel(SDL_Color* out, SDL_Surface* img, int x, int y) {
-    int bpp = img->format->BytesPerPixel;
-    uint8_t* ptr = (uint8_t*)img->pixels + y * img->pitch + x * bpp;
-    Uint32 pixel;
-
-    switch(bpp) {
-    case 1:
-        pixel = *ptr;
-        break;
-    case 2:
-        pixel = *(Uint16*)ptr;
-        break;
-    case 3:
-        if(SDL_BYTEORDER == SDL_BIG_ENDIAN)
-            pixel = ptr[0] << 16 | ptr[1] << 8 | ptr[2];
-        else
-            pixel = ptr[0] | ptr[1] << 8 | ptr[2] << 16;
-        break;
-    case 4:
-        pixel = *(Uint32*)ptr;
-        break;
-    default:
-        pixel = 0;
-    }
-
-    SDL_GetRGBA(pixel, img->format, &out->r, &out->g, &out->b, &out->a);
-}

src/koa/sdl.h

@@ -1,13 +0,0 @@
-#ifndef KOA_SDL_H
-#define KOA_SDL_H
-
-#include <SDL.h>
-#include <stdlib.h>
-
-typedef struct {
-    uint8_t r, g, b, a;
-} pixel_t;
-
-void get_pixel(SDL_Color*, SDL_Surface*, int x, int y);
-
-#endif

src/main.c

@@ -10,6 +10,7 @@
 #include "koa/file.h"
 #include "okuu/mesh.h"
 #include "okuu/shader.h"
+#include "okuu/terrain.h"
 
 #define WINDOW_WIDTH 640
 #define WINDOW_HEIGHT 480
@@ -21,6 +22,7 @@ struct {
     int mode, running;
 
     mesh_t* monkey;
+    terrain_t* map;
 } _g;
 
 struct {
@@ -41,9 +43,18 @@ int main(int argc, char* argv[]) {
     if(init() < 0)
         return -1;
 
-    _g.monkey = mesh_load("data/cube.rbm");
+    _g.monkey = mesh_load("data/player.rbm");
+
+    _g.map = terrain_load(
+        "data/map-heights.bmp",
+        "data/map-colors.bmp",
+        10, 10
+    );
 
     _s_def.shader = shader_create("default");
+    shader_layout(_s_def.shader, 4,
+        "vertex", "texuv", "normal", "color"
+    );
     shader_source(_s_def.shader, 2,
         "shaders/test.vert", GL_VERTEX_SHADER,
         "shaders/test.frag", GL_FRAGMENT_SHADER
@@ -62,19 +73,22 @@ int main(int argc, char* argv[]) {
 }
 
 void run() {
-    static mat4 model, view, projection;
+    static mat4 model, map, view, projection;
     static float rot_up = 45, rot_around = 45;
+    static float x = 0, y = 0;
 
     static int init = 1;
     if(init) {
-        glm_rotate_make(model, glm_rad(90), (vec3){ 0.f, -1.f, 0.f });
+        //glm_rotate_make(model, glm_rad(90), (vec3){ 0.f, -1.f, 0.f });
+        glm_mat4_identity(model);
+        glm_mat4_identity(map);
 
         glm_mat4_identity(view);
 
         glm_perspective(
-            glm_rad(45),
+            glm_rad(55),
             (float)WINDOW_WIDTH/(float)WINDOW_HEIGHT,
-            0.1f, 10.f,
+            0.1f, 100.f,
             projection
         );
 
@@ -106,9 +120,16 @@ void run() {
     shader_start(_s_def.shader); {
         glUniformMatrix4fv(_ATTR(DEF_VIEW), 1, GL_FALSE, (float*)view);
 
-        mesh_bind(_g.monkey);
+        /*mesh_bind(_g.monkey);
         mesh_render(_g.monkey);
-        mesh_unbind();
+        mesh_unbind();*/
+        glm_translate_make(model, (vec3){-x, -(_g.map->heights[(int)y][(int)x] + 2.f), -y});
+        glm_mat4_mul(model, map, model);
+        glUniformMatrix4fv(_ATTR(DEF_MODEL), 1, GL_FALSE, (float*)model);
+
+        glBindVertexArray(_g.map->vao);
+        glDrawArrays(GL_TRIANGLES, 0, _g.map->tri_cnt * 3);
+        glBindVertexArray(0);
     } shader_stop();
 
     SDL_GL_SwapWindow(_g.window);
@@ -137,6 +158,21 @@ void run() {
     else if(_g.keys[SDL_SCANCODE_LEFT])
         rot_around += 2.f;
 
+    if(_g.keys[SDL_SCANCODE_W])
+        x += .25;
+    else if(_g.keys[SDL_SCANCODE_S])
+        x -= .25;
+
+    if(_g.keys[SDL_SCANCODE_D])
+        y += .25;
+    else if(_g.keys[SDL_SCANCODE_A])
+        y -= .25;
+
+    if(_g.keys[SDL_SCANCODE_SPACE]) {
+        terrain_move(_g.map, x, y);
+        glm_translate_make(map, (vec3){__MAX(0, x - CHUNK_SIZE / 2), 0, __MAX(0, y - CHUNK_SIZE / 2)});
+    }
+
     SDL_Event ev;
     while(SDL_PollEvent(&ev)) {
         if(ev.type == SDL_QUIT)

src/okuu/mesh.c

@@ -35,8 +35,10 @@ int _populate_faces
 
     for(int i = 0; i < 3; ++i) {
         for(int j = 0; j < 3; ++j) {
-            if((flags & (1 << j)) == 0)
+            if((flags & (1 << j)) == 0) {
+                data[at].data[i][j] = 0;
                 continue;
+            }
 
             chk = fread(buffer, 1, length, fp);
             if(chk != length)
@@ -127,7 +129,7 @@ mesh_t* mesh_load(const char* file) {
             }
 
             memcpy(
-                &verts_asm[i*3*3 + 3*j],
+                &verts_asm[i * 3 *3 + 3 * j],
                 verts[faces[i].data[j][0] - 1].data,
                 3 * sizeof(float)
             );

src/okuu/shader.c

@@ -5,6 +5,8 @@ shader_t* _active = NULL;
 shader_t* shader_create(const char* name) {
     shader_t* shader = malloc(sizeof(shader_t));
     shader->name = name;
+    shader->layout = NULL;
+    shader->layout_cnt = 0;
     shader->attribs = NULL;
     shader->program = glCreateProgram();
     shader->loaded = 0;
@@ -12,6 +14,23 @@ shader_t* shader_create(const char* name) {
     return shader;
 }
 
+int shader_layout(shader_t* shader, int count, ...) {
+    if(shader->loaded)
+        return -1;
+    if(shader->layout != NULL)
+        free(shader->layout);
+    shader->layout = malloc(sizeof(layout_name_t) * count);
+    shader->layout_cnt = count;
+
+    va_list args;
+    va_start(args, count);
+    for(int i = 0; i < count; ++i)
+        strcpy(shader->layout[i], va_arg(args, const char*));
+    va_end(args);
+
+    return 0;
+}
+
 int shader_source(shader_t* shader, int files, ...) {
     if(shader->loaded)
         return -1;
@@ -66,6 +85,12 @@ int shader_source(shader_t* shader, int files, ...) {
     if(failed)
         return -1;
 
+    if(shader->layout != NULL) {
+        for(int i = 0; i < shader->layout_cnt; ++i)
+            glBindAttribLocation(shader->program, i, shader->layout[i]);
+        free(shader->layout);
+    }
+
     glLinkProgram(shader->program);
     glGetProgramiv(shader->program, GL_LINK_STATUS, &err);
     if(err == GL_FALSE) {

src/okuu/shader.h

@@ -12,8 +12,13 @@
 #define _SHADER shader_active()
 #define _ATTR(I) shader_attr(_SHADER, I)
 
+typedef char layout_name_t[256];
+
 typedef struct {
     const char* name;
+    int layout_cnt;
+    layout_name_t* layout;
+
     GLuint program;
     GLint* attribs;
     int loaded;
@@ -21,6 +26,7 @@ typedef struct {
 
 shader_t* shader_create(const char*);
 
+int shader_layout(shader_t*, int, ...);
 int shader_source(shader_t*, int, ...);
 int shader_attribs(shader_t*, int, ...);
 GLint shader_attr(const shader_t*, int);

src/okuu/terrain.c

@@ -1,7 +1,18 @@
 #include "terrain.h"
 
 #define _HGT_AT(A, X, Y) (A->bmps[0]->pixels[Y][X].r / 10.f)
-#define _COL_AT(A, X, Y, C) (A->bmps[1]->pixels[Y][X].C / 255.f)
+#define _RWCOL_AT(A, X, Y) (A->bmps[1]->pixels[Y][X])
+#define _RCOL_AT(A, X, Y, C) (_RWCOL_AT(A, X, Y).C)
+#define _COL_AT(A, X, Y, C) (_RCOL_AT(A, X, Y, C) / 255.f)
+#define _COL_EQ(A, X1, Y1, X2, Y2) \
+    (color_eqp(&A->bmps[1]->pixels[Y1][X1], &A->bmps[1]->pixels[Y2][X2]))
+
+float _avg_hgt(terrain_t* map, int x, int y) {
+    return
+        (_HGT_AT(map, x, y) + _HGT_AT(map, x + 1, y) +
+         _HGT_AT(map, x, y + 1) + _HGT_AT(map, x + 1, y + 1))
+        / 4.f;
+}
 
 terrain_t* terrain_load
     (const char* heights, const char* colors,
@@ -50,96 +61,289 @@ void terrain_move(terrain_t* terrain, int center_x, int center_y) {
     terrain->center_x = center_x;
     terrain->center_y = center_y;
 
-    const int data_length = 6 * 3 * (CHUNK_SIZE - 1) * (CHUNK_SIZE - 1);
+    const int data_length = 12 * 3 * (CHUNK_SIZE - 1) * (CHUNK_SIZE - 1);
+    terrain->tri_cnt = data_length / 3;
     float data[data_length];
-    vec3 dir1, dir2, norm;
+    vec3 dir1, dir2, norm1, norm2, norm3;
 
     for(int i = 0; i < TERR_BUFFS; ++i) {
+        int cnt = i == 1 ? 2 : 3;
         for(int y = 0; y < CHUNK_SIZE - 1; ++y) {
             for(int x = 0; x < CHUNK_SIZE - 1; ++x) {
-                int at = (y * CHUNK_SIZE * 6 * 3) + (x * 6 * 3);
+                int at = (y * (CHUNK_SIZE - 1) * 12 * cnt) + (x * 12 * cnt);
 
                 switch(i) {
                 case 0:
                     data[at]      = x;
-                    data[at + 1]  = _HGT_AT(terrain, x, y);
+                    data[at + 1]  = terrain->heights[y][x] =
+                        _HGT_AT(terrain, x, y);
                     data[at + 2]  = y;
 
-                    data[at + 3]  = x;
-                    data[at + 4]  = _HGT_AT(terrain, x, y + 1);
-                    data[at + 5]  = y + 1;
+                    data[at + 3]  = x + 0.5f;
+                    data[at + 4]  = _avg_hgt(terrain, x, y);
+                    data[at + 5]  = y + 0.5f;
 
                     data[at + 6]  = x + 1;
                     data[at + 7]  = _HGT_AT(terrain, x + 1, y);
                     data[at + 8]  = y;
 
+
                     data[at + 9]  = x + 1;
-                    data[at + 10] = _HGT_AT(terrain, x + 1, y + 1);
-                    data[at + 11] = y + 1;
+                    data[at + 10] = _HGT_AT(terrain, x + 1, y);
+                    data[at + 11] = y;
 
-                    data[at + 12] = x + 1;
-                    data[at + 13] = _HGT_AT(terrain, x + 1, y);
-                    data[at + 14] = y;
+                    data[at + 12] = x + 0.5f;
+                    data[at + 13] = _avg_hgt(terrain, x, y);
+                    data[at + 14] = y + 0.5f;
 
-                    data[at + 15] = x;
-                    data[at + 16] = _HGT_AT(terrain, x, y + 1);
+                    data[at + 15] = x + 1;
+                    data[at + 16] = _HGT_AT(terrain, x + 1, y + 1);
                     data[at + 17] = y + 1;
+
+
+                    data[at + 18] = x;
+                    data[at + 19] = _HGT_AT(terrain, x, y + 1);
+                    data[at + 20] = y + 1;
+
+                    data[at + 21] = x + 1;
+                    data[at + 22] = _HGT_AT(terrain, x + 1, y + 1);
+                    data[at + 23] = y + 1;
+
+                    data[at + 24] = x + 0.5f;
+                    data[at + 25] = _avg_hgt(terrain, x, y);
+                    data[at + 26] = y + 0.5f;
+
+
+                    data[at + 27] = x;
+                    data[at + 28] = _HGT_AT(terrain, x, y);
+                    data[at + 29] = y;
+
+                    data[at + 30]  = x;
+                    data[at + 31] = _HGT_AT(terrain, x, y + 1);
+                    data[at + 32] = y + 1;
+
+                    data[at + 33] = x + 0.5f;
+                    data[at + 34] = _avg_hgt(terrain, x, y);
+                    data[at + 35] = y + 0.5f;
                     break;
                 case 1:
-                    glm_vec3_sub(
-                        (vec3){ x + 1, _HGT_AT(terrain, x + 1, y), y },
-                        (vec3){ x, _HGT_AT(terrain, x, y), y },
-                        dir1
-                    );
-                    glm_vec3_sub(
-                        (vec3){ x, _HGT_AT(terrain, x, y + 1), y + 1 },
-                        (vec3){ x, _HGT_AT(terrain, x, y), y },
-                        dir2
-                    );
-                    glm_vec3_cross(dir1, dir2, norm);
-                    memcpy(&data[at], norm, 3 * sizeof(float));
-                    memcpy(&data[at + 3], norm, 3 * sizeof(float));
-                    memcpy(&data[at + 6], norm, 3 * sizeof(float));
+                    data[at]      = 0.f;
+                    data[at + 1]  = 0.f;
 
-                    glm_vec3_sub(
-                        (vec3){ x + 1, _HGT_AT(terrain, x + 1, y + 1), y + 1 },
-                        (vec3){ x + 1, _HGT_AT(terrain, x + 1, y), y },
-                        dir1
-                    );
-                    glm_vec3_sub(
-                        (vec3){ x + 1, _HGT_AT(terrain, x + 1, y + 1), y + 1 },
-                        (vec3){ x, _HGT_AT(terrain, x, y + 1), y + 1 },
-                        dir2
-                    );
-                    glm_vec3_cross(dir1, dir2, norm);
-                    memcpy(&data[at + 9], norm, 3 * sizeof(float));
-                    memcpy(&data[at + 12], norm, 3 * sizeof(float));
-                    memcpy(&data[at + 15], norm, 3 * sizeof(float));
+                    data[at + 2]  = .5f;
+                    data[at + 3]  = .5f;
+
+                    data[at + 4]  = 1.f;
+                    data[at + 5]  = 0.f;
+
+
+                    data[at + 6]  = 1.f;
+                    data[at + 7]  = 0.f;
+
+                    data[at + 8]  = .5f;
+                    data[at + 9]  = .5f;
+
+                    data[at + 10] = 1.f;
+                    data[at + 11] = 1.f;
+
+
+                    data[at + 12] = 0.f;
+                    data[at + 13] = 1.f;
+
+                    data[at + 14] = 1.f;
+                    data[at + 15] = 1.f;
+
+                    data[at + 16] = .5f;
+                    data[at + 17] = .5f;
+
+
+                    data[at + 18] = 0.f;
+                    data[at + 19] = 0.f;
+
+                    data[at + 20] = 0.f;
+                    data[at + 21] = 1.f;
+
+                    data[at + 22] = .5f;
+                    data[at + 23] = .5f;
                     break;
                 case 2:
-                    data[at]      = _COL_AT(terrain, x, y, r);
-                    data[at + 1]  = _COL_AT(terrain, x, y, g);
-                    data[at + 2]  = _COL_AT(terrain, x, y, b);
+                    glm_vec3_sub(
+                        (vec3){ x, _HGT_AT(terrain, x, y), y },
+                        (vec3){ x + 0.5f, _avg_hgt(terrain, x, y), y + 0.5f },
+                        dir1
+                    );
+                    glm_vec3_sub(
+                        (vec3){ x, _HGT_AT(terrain, x, y), y },
+                        (vec3){ x + 1, _HGT_AT(terrain, x + 1, y), y },
+                        dir2
+                    );
+                    glm_vec3_cross(dir1, dir2, norm1);
+                    glm_vec3_normalize(norm1);
+                    memcpy(&data[at], norm1, 3 * sizeof(float));
+                    memcpy(&data[at + 3], norm1, 3 * sizeof(float));
+                    memcpy(&data[at + 6], norm1, 3 * sizeof(float));
 
-                    data[at + 3]  = _COL_AT(terrain, x + 1, y, r);
-                    data[at + 4]  = _COL_AT(terrain, x + 1, y, g);
-                    data[at + 5]  = _COL_AT(terrain, x + 1, y, b);
+                    glm_vec3_sub(
+                        (vec3){ x + 1, _HGT_AT(terrain, x + 1, y), y },
+                        (vec3){ x + 0.5f, _avg_hgt(terrain, x, y), y + 0.5f },
+                        dir1
+                    );
+                    glm_vec3_sub(
+                        (vec3){ x + 1, _HGT_AT(terrain, x + 1, y), y },
+                        (vec3){ x + 1, _HGT_AT(terrain, x + 1, y + 1), y + 1 },
+                        dir2
+                    );
+                    glm_vec3_cross(dir1, dir2, norm1);
+                    glm_vec3_normalize(norm1);
+                    memcpy(&data[at + 9], norm1, 3 * sizeof(float));
+                    memcpy(&data[at + 12], norm1, 3 * sizeof(float));
+                    memcpy(&data[at + 15], norm1, 3 * sizeof(float));
 
-                    data[at + 6]  = _COL_AT(terrain, x, y + 1, r);
-                    data[at + 7]  = _COL_AT(terrain, x, y + 1, g);
-                    data[at + 8]  = _COL_AT(terrain, x, y + 1, b);
+                    glm_vec3_sub(
+                        (vec3){ x + 1, _HGT_AT(terrain, x + 1, y + 1), y + 1 },
+                        (vec3){ x + 0.5f, _avg_hgt(terrain, x, y), y + 0.5f },
+                        dir1
+                    );
+                    glm_vec3_sub(
+                        (vec3){ x + 1, _HGT_AT(terrain, x + 1, y + 1), y + 1 },
+                        (vec3){ x, _HGT_AT(terrain, x, y + 1), y + 1 },
+                        dir2
+                    );
+                    glm_vec3_cross(dir1, dir2, norm1);
+                    glm_vec3_normalize(norm1);
+                    memcpy(&data[at + 18], norm1, 3 * sizeof(float));
+                    memcpy(&data[at + 21], norm1, 3 * sizeof(float));
+                    memcpy(&data[at + 24], norm1, 3 * sizeof(float));
 
-                    data[at + 9]  = _COL_AT(terrain, x + 1, y + 1, r);
-                    data[at + 10] = _COL_AT(terrain, x + 1, y + 1, g);
-                    data[at + 11] = _COL_AT(terrain, x + 1, y + 1, b);
+                    glm_vec3_sub(
+                        (vec3){ x, _HGT_AT(terrain, x, y), y },
+                        (vec3){ x + 0.5f, _avg_hgt(terrain, x, y), y + 0.5f },
+                        dir1
+                    );
+                    glm_vec3_sub(
+                        (vec3){ x, _HGT_AT(terrain, x, y), y },
+                        (vec3){ x, _HGT_AT(terrain, x, y + 1), y + 1 },
+                        dir2
+                    );
+                    glm_vec3_cross(dir2, dir1, norm1);
+                    glm_vec3_normalize(norm1);
+                    memcpy(&data[at + 27], norm1, 3 * sizeof(float));
+                    memcpy(&data[at + 30], norm1, 3 * sizeof(float));
+                    memcpy(&data[at + 33], norm1, 3 * sizeof(float));
 
-                    data[at + 12] = _COL_AT(terrain, x + 1, y, r);
-                    data[at + 13] = _COL_AT(terrain, x + 1, y, g);
-                    data[at + 14] = _COL_AT(terrain, x + 1, y, b);
+                    glm_vec3_add(
+                        data + at + 3,
+                        data + at + 12,
+                        data + at + 3
+                    );
+                    glm_vec3_add(
+                        data + at + 3,
+                        data + at + 33,
+                        data + at + 3
+                    );
+                    glm_vec3_add(
+                        data + at + 3,
+                        data + at + 24,
+                        data + at + 3
+                    );
+                    glm_vec3_normalize(data + at + 3);
+                    memcpy(data + at + 12, data + at + 3, 3 * sizeof(float));
+                    memcpy(data + at + 24, data + at + 3, 3 * sizeof(float));
+                    memcpy(data + at + 33, data + at + 3, 3 * sizeof(float));
+
+                    //_norm_smooth(data, x, y);
+                    break;
+                case 3:
+                    for(int j = 0; j < 12; ++j) {
+                        data[at + j * 3]     = _COL_AT(terrain, x, y, r);
+                        data[at + j * 3 + 1] = _COL_AT(terrain, x, y, g);
+                        data[at + j * 3 + 2] = _COL_AT(terrain, x, y, b);
+                    }
+
+                    const color_t path_colors[] = {
+                        {0x60, 0x60, 0x60, 0xFF},
+                        {0x9C, 0x00, 0x0E, 0xFF}
+                    };
+
+                    int found = 0;
+                    for(int j = 0; j < sizeof(path_colors) / sizeof(color_t); ++j) {
+                        if(color_eqp(&path_colors[j], &_RWCOL_AT(terrain, x, y))) {
+                            found = 1;
+                            break;
+                        }
+                    }
+
+                    if(!found)
+                        continue;
+
+                    if(x == 0 || y == 0)
+                        continue;
+
+                    int neighbors =
+                        _COL_EQ(terrain, x, y, x, y - 1) +
+                        _COL_EQ(terrain, x, y, x + 1, y) +
+                        _COL_EQ(terrain, x, y, x, y + 1) +
+                        _COL_EQ(terrain, x, y, x - 1, y);
+
+                    if(neighbors > 2)
+                        continue;
+
+                    const int coords[][2] = {
+                        {0, -1}, {1, 0},
+                        {0, 1}, {-1, 0}
+                    };
+
+                    for(int j = 0; j < 4; ++j) {
+                        if(!_COL_EQ(terrain,
+                                x, y,
+                                x + coords[j][0],
+                                y + coords[j][1]))
+                        {
+                            data[at + j * 9] = _COL_AT(terrain,
+                                x + coords[j][0],
+                                y + coords[j][1], r
+                            );
+
+                            data[at + j * 9 + 1] = _COL_AT(terrain,
+                                x + coords[j][0],
+                                y + coords[j][1], g
+                            );
+
+                            data[at + j * 9 + 2] = _COL_AT(terrain,
+                                x + coords[j][0],
+                                y + coords[j][1], b
+                            );
+
+                            memcpy(data + at + j * 9 + 3, data + at + j * 9, 3 * sizeof(float));
+                            memcpy(data + at + j * 9 + 6, data + at + j * 9, 3 * sizeof(float));
+                        }
+                    }
+
+                    /*
+                    for(int j = 0; j < 4; ++j) {
+                        if(_COL_EQ(terrain,
+                            x + coords[j][0],
+                            y + coords[j][1],
+                            x + coords[j][2],
+                            y + coords[j][3]))
+                        {
+                            for(int k = 0; k < 6; ++k) {
+                                data[at + ((k * 3 + j * 9) % 36)] =
+                                    _COL_AT(terrain,
+                                            x + coords[j][0],
+                                            y + coords[j][1], r);
+                                data[at + ((k * 3 + j * 9 + 1) % 36)] =
+                                    _COL_AT(terrain,
+                                            x + coords[j][0],
+                                            y + coords[j][1], g);
+                                data[at + ((k * 3 + j * 9 + 2) % 36)] =
+                                    _COL_AT(terrain,
+                                            x + coords[j][0],
+                                            y + coords[j][1], b);
+                            }
+                        }
+                    }*/
 
-                    data[at + 15] = _COL_AT(terrain, x, y + 1, r);
-                    data[at + 16] = _COL_AT(terrain, x, y + 1, g);
-                    data[at + 17] = _COL_AT(terrain, x, y + 1, b);
                     break;
                 }
             }
@@ -156,8 +360,8 @@ void terrain_move(terrain_t* terrain, int center_x, int center_y) {
 
             glBindVertexArray(terrain->vao); {
                 glEnableVertexAttribArray(i);
-                glVertexAttribPointer(i, 3, GL_FLOAT,
-                    i == 1 ? GL_TRUE : GL_FALSE, 0, (void*)0);
+                glVertexAttribPointer(i, cnt, GL_FLOAT,
+                    i == 2 ? GL_TRUE : GL_FALSE, 0, (void*)0);
             } glBindVertexArray(0);
         } else {
             glBufferSubData(

src/okuu/terrain.h

@@ -14,12 +14,12 @@
 
 #include "koa/file.h"
 
-#define CHUNK_SIZE 32
-#define TERR_BUFFS 3
+#define CHUNK_SIZE 100
+#define TERR_BUFFS 4
 
 typedef struct {
     bmp_t* bmps[2];
-    int center_x, center_y;
+    int center_x, center_y, tri_cnt;
     float heights[CHUNK_SIZE][CHUNK_SIZE];
     GLuint buffers[TERR_BUFFS], vao;
 } terrain_t;

src/shaders/test.frag

@@ -1,20 +1,48 @@
 #version 100
-precision mediump float;
-varying vec3 f_normal;
+precision lowp float;
 
-const vec3 light_color = vec3(0.8, 0.8, 0.8);
-const vec3 light = normalize(vec3(-1.0, -1.0, 1.0));
+varying vec3 f_normal;
+varying vec3 f_color;
+
+const vec3 light_color = vec3(1.0, 1.0, 1.0);
+const vec3 light_dir = normalize(vec3(-1.0, 2.0, -1.0));
+const float ambient_strength = 0.1;
+
+void main() {
+    vec3 ambient = light_color * ambient_strength;
+    vec3 norm = normalize(f_normal);
+
+    float diff = max(0.0, dot(norm, light_dir));
+    vec3 diffuse = diff * light_color;
+
+    vec3 color = (ambient + diffuse) * f_color;
+    gl_FragColor = vec4(color, 1.0);
+    //gl_FragColor = vec4(f_normal, 1.0);
+}
+
+/*varying vec3 f_normal;
+//varying vec3 f_pos;
+
+const vec3 light_dir = normalize(vec3(1, 1, -1));
+const vec3 object_color = vec3(.4157, .051, .6784);
+const vec3 light_pos = vec3(3, 3, 3);
+//const vec3 light = normalize(vec3(1.0, 1.0, 1.0));
 
 void main() {
     //gl_FragColor = vec4(coord.z, coord.z, coord.z, 1.0);
 
     //float xval = gl_FragCoord.x / 640.0;
     //float yval = gl_FragCoord.y / 480.0;
-    vec3 ambient_color = vec3(0.2, 0.1, 0.1);
-    float light_intensity = dot(light, normalize(f_normal));
-    //vec3 color = f_normal;
-    vec3 color = ambient_color + light_color * light_intensity;
-    //vec3 color = vec3(light_intensity, light_intensity, light_intensity);
+    vec3 ambient = light_color * ambient_strength;
+    vec3 norm = normalize(f_normal);
+    //vec3 light_dir = normalize(light_pos - f_pos);
+    float diff = max(0.0, dot(norm, light_dir));
+    vec3 diffuse = diff * light_color;
 
+    //vec3 color = (f_normal + vec3(1.0)) / vec3(2.0);
+    //vec3 color = f_normal;
+    //vec3 color = vec3(f_normal, f_normal, f_normal);
+
+    vec3 color = (ambient + diffuse) * object_color;
     gl_FragColor = vec4(color, 1.0);
-}
+}*/

src/shaders/test.vert

@@ -4,15 +4,28 @@ precision highp float;
 attribute vec3 vertex;
 attribute vec2 texuv;
 attribute vec3 normal;
+attribute vec3 color;
+
+/*layout(location = 0) in vec3 vertex;
+layout(location = 1) in vec2 texuv;
+layout(location = 2) in vec3 normal;*/
 
 uniform mat4 model;
 uniform mat4 view;
 uniform mat4 projection;
 
 varying vec3 f_normal;
+varying vec3 f_color;
 
 void main() {
-    f_normal = normal;
+    //f_normal = normal;
+    //f_pos = vertex;
+    /*vec3 norm = normalize(normal);
+    float intensity = max(dot(norm, light_dir), 0.0);
+    f_color = intensity * vec3(.4157, .051, .6784);*/
+    f_normal = normalize(normal);
+    f_color = color;
+
     gl_Position =
         projection * view * model *
         vec4(vertex, 1.0);