X-Git-Url: https://git.kengrimes.com/?a=blobdiff_plain;f=stb%2Ftests%2Fcaveview%2Fcave_main.c;fp=stb%2Ftests%2Fcaveview%2Fcave_main.c;h=d345cf1e35b9751b2efbbc193c3b800bcc14719d;hb=52b3767316142be128199f8f3a5eccd51d464d08;hp=0000000000000000000000000000000000000000;hpb=e4ad1c1a9499babb6804823e60377a14b6a0b583;p=henge%2Fapc.git diff --git a/stb/tests/caveview/cave_main.c b/stb/tests/caveview/cave_main.c new file mode 100644 index 0000000..d345cf1 --- /dev/null +++ b/stb/tests/caveview/cave_main.c @@ -0,0 +1,598 @@ +#define _WIN32_WINNT 0x400 + +#include +#include + +// stb.h +#define STB_DEFINE +#include "stb.h" + +// stb_gl.h +#define STB_GL_IMPLEMENTATION +#define STB_GLEXT_DEFINE "glext_list.h" +#include "stb_gl.h" + +// SDL +#include "sdl.h" +#include "SDL_opengl.h" + +// stb_glprog.h +#define STB_GLPROG_IMPLEMENTATION +#define STB_GLPROG_ARB_DEFINE_EXTENSIONS +#include "stb_glprog.h" + +// stb_image.h +#define STB_IMAGE_IMPLEMENTATION +#include "stb_image.h" + +// stb_easy_font.h +#include "stb_easy_font.h" // doesn't require an IMPLEMENTATION + +#include "caveview.h" + +char *game_name = "caveview"; + + +#define REVERSE_DEPTH + + + +static void print_string(float x, float y, char *text, float r, float g, float b) +{ + static char buffer[99999]; + int num_quads; + + num_quads = stb_easy_font_print(x, y, text, NULL, buffer, sizeof(buffer)); + + glColor3f(r,g,b); + glEnableClientState(GL_VERTEX_ARRAY); + glVertexPointer(2, GL_FLOAT, 16, buffer); + glDrawArrays(GL_QUADS, 0, num_quads*4); + glDisableClientState(GL_VERTEX_ARRAY); +} + +static float text_color[3]; +static float pos_x = 10; +static float pos_y = 10; + +static void print(char *text, ...) +{ + char buffer[999]; + va_list va; + va_start(va, text); + vsprintf(buffer, text, va); + va_end(va); + print_string(pos_x, pos_y, buffer, text_color[0], text_color[1], text_color[2]); + pos_y += 10; +} + +float camang[3], camloc[3] = { 60,22,77 }; +float player_zoom = 1.0; +float rotate_view = 0.0; + + +void camera_to_worldspace(float world[3], float cam_x, float cam_y, float cam_z) +{ + float vec[3] = { cam_x, cam_y, cam_z }; + float t[3]; + float s,c; + s = (float) sin(camang[0]*3.141592/180); + c = (float) cos(camang[0]*3.141592/180); + + t[0] = vec[0]; + t[1] = c*vec[1] - s*vec[2]; + t[2] = s*vec[1] + c*vec[2]; + + s = (float) sin(camang[2]*3.141592/180); + c = (float) cos(camang[2]*3.141592/180); + world[0] = c*t[0] - s*t[1]; + world[1] = s*t[0] + c*t[1]; + world[2] = t[2]; +} + +// camera worldspace velocity +float cam_vel[3]; + +int controls; + +#define MAX_VEL 150.0f // blocks per second +#define ACCEL 6.0f +#define DECEL 3.0f + +#define STATIC_FRICTION DECEL +#define EFFECTIVE_ACCEL (ACCEL+DECEL) + +// dynamic friction: +// +// if going at MAX_VEL, ACCEL and friction must cancel +// EFFECTIVE_ACCEL = DECEL + DYNAMIC_FRIC*MAX_VEL +#define DYNAMIC_FRICTION (ACCEL/(float)MAX_VEL) + +float view_x_vel = 0; +float view_z_vel = 0; +float pending_view_x; +float pending_view_z; +float pending_view_x; +float pending_view_z; + +void process_tick_raw(float dt) +{ + int i; + float thrust[3] = { 0,0,0 }; + float world_thrust[3]; + + // choose direction to apply thrust + + thrust[0] = (controls & 3)== 1 ? EFFECTIVE_ACCEL : (controls & 3)== 2 ? -EFFECTIVE_ACCEL : 0; + thrust[1] = (controls & 12)== 4 ? EFFECTIVE_ACCEL : (controls & 12)== 8 ? -EFFECTIVE_ACCEL : 0; + thrust[2] = (controls & 48)==16 ? EFFECTIVE_ACCEL : (controls & 48)==32 ? -EFFECTIVE_ACCEL : 0; + + // @TODO clamp thrust[0] & thrust[1] vector length to EFFECTIVE_ACCEL + + camera_to_worldspace(world_thrust, thrust[0], thrust[1], 0); + world_thrust[2] += thrust[2]; + + for (i=0; i < 3; ++i) { + float acc = world_thrust[i]; + cam_vel[i] += acc*dt; + } + + if (cam_vel[0] || cam_vel[1] || cam_vel[2]) + { + float vel = (float) sqrt(cam_vel[0]*cam_vel[0] + cam_vel[1]*cam_vel[1] + cam_vel[2]*cam_vel[2]); + float newvel = vel; + float dec = STATIC_FRICTION + DYNAMIC_FRICTION*vel; + newvel = vel - dec*dt; + if (newvel < 0) + newvel = 0; + cam_vel[0] *= newvel/vel; + cam_vel[1] *= newvel/vel; + cam_vel[2] *= newvel/vel; + } + + camloc[0] += cam_vel[0] * dt; + camloc[1] += cam_vel[1] * dt; + camloc[2] += cam_vel[2] * dt; + + view_x_vel *= (float) pow(0.75, dt); + view_z_vel *= (float) pow(0.75, dt); + + view_x_vel += (pending_view_x - view_x_vel)*dt*60; + view_z_vel += (pending_view_z - view_z_vel)*dt*60; + + pending_view_x -= view_x_vel * dt; + pending_view_z -= view_z_vel * dt; + camang[0] += view_x_vel * dt; + camang[2] += view_z_vel * dt; + camang[0] = stb_clamp(camang[0], -90, 90); + camang[2] = (float) fmod(camang[2], 360); +} + +void process_tick(float dt) +{ + while (dt > 1.0f/60) { + process_tick_raw(1.0f/60); + dt -= 1.0f/60; + } + process_tick_raw(dt); +} + +void update_view(float dx, float dy) +{ + // hard-coded mouse sensitivity, not resolution independent? + pending_view_z -= dx*300; + pending_view_x -= dy*700; +} + +extern int screen_x, screen_y; +extern int is_synchronous_debug; +float render_time; + +extern int chunk_locations, chunks_considered, chunks_in_frustum; +extern int quads_considered, quads_rendered; +extern int chunk_storage_rendered, chunk_storage_considered, chunk_storage_total; +extern int view_dist_in_chunks; +extern int num_threads_active, num_meshes_started, num_meshes_uploaded; +extern float chunk_server_activity; + +static Uint64 start_time, end_time; // render time + +float chunk_server_status[32]; +int chunk_server_pos; + +void draw_stats(void) +{ + int i; + + static Uint64 last_frame_time; + Uint64 cur_time = SDL_GetPerformanceCounter(); + float chunk_server=0; + float frame_time = (cur_time - last_frame_time) / (float) SDL_GetPerformanceFrequency(); + last_frame_time = cur_time; + + chunk_server_status[chunk_server_pos] = chunk_server_activity; + chunk_server_pos = (chunk_server_pos+1) %32; + + for (i=0; i < 32; ++i) + chunk_server += chunk_server_status[i] / 32.0f; + + stb_easy_font_spacing(-0.75); + pos_y = 10; + text_color[0] = text_color[1] = text_color[2] = 1.0f; + print("Frame time: %6.2fms, CPU frame render time: %5.2fms", frame_time*1000, render_time*1000); + print("Tris: %4.1fM drawn of %4.1fM in range", 2*quads_rendered/1000000.0f, 2*quads_considered/1000000.0f); + print("Vbuf storage: %dMB in frustum of %dMB in range of %dMB in cache", chunk_storage_rendered>>20, chunk_storage_considered>>20, chunk_storage_total>>20); + print("Num mesh builds started this frame: %d; num uploaded this frame: %d\n", num_meshes_started, num_meshes_uploaded); + print("QChunks: %3d in frustum of %3d valid of %3d in range", chunks_in_frustum, chunks_considered, chunk_locations); + print("Mesh worker threads active: %d", num_threads_active); + print("View distance: %d blocks", view_dist_in_chunks*16); + print("%s", glGetString(GL_RENDERER)); + + if (is_synchronous_debug) { + text_color[0] = 1.0; + text_color[1] = 0.5; + text_color[2] = 0.5; + print("SLOWNESS: Synchronous debug output is enabled!"); + } +} + +void draw_main(void) +{ + glEnable(GL_CULL_FACE); + glDisable(GL_TEXTURE_2D); + glDisable(GL_LIGHTING); + glEnable(GL_DEPTH_TEST); + #ifdef REVERSE_DEPTH + glDepthFunc(GL_GREATER); + glClearDepth(0); + #else + glDepthFunc(GL_LESS); + glClearDepth(1); + #endif + glDepthMask(GL_TRUE); + glDisable(GL_SCISSOR_TEST); + glClearColor(0.6f,0.7f,0.9f,0.0f); + glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); + + glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA); + glColor3f(1,1,1); + glFrontFace(GL_CW); + glEnable(GL_TEXTURE_2D); + glDisable(GL_BLEND); + + + glMatrixMode(GL_PROJECTION); + glLoadIdentity(); + + #ifdef REVERSE_DEPTH + stbgl_Perspective(player_zoom, 90, 70, 3000, 1.0/16); + #else + stbgl_Perspective(player_zoom, 90, 70, 1.0/16, 3000); + #endif + + // now compute where the camera should be + glMatrixMode(GL_MODELVIEW); + glLoadIdentity(); + stbgl_initCamera_zup_facing_y(); + + glRotatef(-camang[0],1,0,0); + glRotatef(-camang[2],0,0,1); + glTranslatef(-camloc[0], -camloc[1], -camloc[2]); + + start_time = SDL_GetPerformanceCounter(); + render_caves(camloc); + end_time = SDL_GetPerformanceCounter(); + + render_time = (end_time - start_time) / (float) SDL_GetPerformanceFrequency(); + + glMatrixMode(GL_PROJECTION); + glLoadIdentity(); + gluOrtho2D(0,screen_x/2,screen_y/2,0); + glMatrixMode(GL_MODELVIEW); + glLoadIdentity(); + glDisable(GL_TEXTURE_2D); + glDisable(GL_BLEND); + glDisable(GL_CULL_FACE); + draw_stats(); +} + + + +#pragma warning(disable:4244; disable:4305; disable:4018) + +#define SCALE 2 + +void error(char *s) +{ + SDL_ShowSimpleMessageBox(SDL_MESSAGEBOX_ERROR, "Error", s, NULL); + exit(0); +} + +void ods(char *fmt, ...) +{ + char buffer[1000]; + va_list va; + va_start(va, fmt); + vsprintf(buffer, fmt, va); + va_end(va); + SDL_Log("%s", buffer); +} + +#define TICKS_PER_SECOND 60 + +static SDL_Window *window; + +extern void draw_main(void); +extern void process_tick(float dt); +extern void editor_init(void); + +void draw(void) +{ + draw_main(); + SDL_GL_SwapWindow(window); +} + + +static int initialized=0; +static float last_dt; + +int screen_x,screen_y; + +float carried_dt = 0; +#define TICKRATE 60 + +float tex2_alpha = 1.0; + +int raw_level_time; + +float global_timer; +int global_hack; + +int loopmode(float dt, int real, int in_client) +{ + if (!initialized) return 0; + + if (!real) + return 0; + + // don't allow more than 6 frames to update at a time + if (dt > 0.075) dt = 0.075; + + global_timer += dt; + + carried_dt += dt; + while (carried_dt > 1.0/TICKRATE) { + if (global_hack) { + tex2_alpha += global_hack / 60.0f; + if (tex2_alpha < 0) tex2_alpha = 0; + if (tex2_alpha > 1) tex2_alpha = 1; + } + //update_input(); + // if the player is dead, stop the sim + carried_dt -= 1.0/TICKRATE; + } + + process_tick(dt); + draw(); + + return 0; +} + +static int quit; + +extern int controls; + +void active_control_set(int key) +{ + controls |= 1 << key; +} + +void active_control_clear(int key) +{ + controls &= ~(1 << key); +} + +extern void update_view(float dx, float dy); + +void process_sdl_mouse(SDL_Event *e) +{ + update_view((float) e->motion.xrel / screen_x, (float) e->motion.yrel / screen_y); +} + +void process_event(SDL_Event *e) +{ + switch (e->type) { + case SDL_MOUSEMOTION: + process_sdl_mouse(e); + break; + case SDL_MOUSEBUTTONDOWN: + case SDL_MOUSEBUTTONUP: + break; + + case SDL_QUIT: + quit = 1; + break; + + case SDL_WINDOWEVENT: + switch (e->window.event) { + case SDL_WINDOWEVENT_SIZE_CHANGED: + screen_x = e->window.data1; + screen_y = e->window.data2; + loopmode(0,1,0); + break; + } + break; + + case SDL_KEYDOWN: { + int k = e->key.keysym.sym; + int s = e->key.keysym.scancode; + SDL_Keymod mod; + mod = SDL_GetModState(); + if (k == SDLK_ESCAPE) + quit = 1; + + if (s == SDL_SCANCODE_D) active_control_set(0); + if (s == SDL_SCANCODE_A) active_control_set(1); + if (s == SDL_SCANCODE_W) active_control_set(2); + if (s == SDL_SCANCODE_S) active_control_set(3); + if (k == SDLK_SPACE) active_control_set(4); + if (s == SDL_SCANCODE_LCTRL) active_control_set(5); + if (s == SDL_SCANCODE_S) active_control_set(6); + if (s == SDL_SCANCODE_D) active_control_set(7); + if (k == '1') global_hack = !global_hack; + if (k == '2') global_hack = -1; + + #if 0 + if (game_mode == GAME_editor) { + switch (k) { + case SDLK_RIGHT: editor_key(STBTE_scroll_right); break; + case SDLK_LEFT : editor_key(STBTE_scroll_left ); break; + case SDLK_UP : editor_key(STBTE_scroll_up ); break; + case SDLK_DOWN : editor_key(STBTE_scroll_down ); break; + } + switch (s) { + case SDL_SCANCODE_S: editor_key(STBTE_tool_select); break; + case SDL_SCANCODE_B: editor_key(STBTE_tool_brush ); break; + case SDL_SCANCODE_E: editor_key(STBTE_tool_erase ); break; + case SDL_SCANCODE_R: editor_key(STBTE_tool_rectangle ); break; + case SDL_SCANCODE_I: editor_key(STBTE_tool_eyedropper); break; + case SDL_SCANCODE_L: editor_key(STBTE_tool_link); break; + case SDL_SCANCODE_G: editor_key(STBTE_act_toggle_grid); break; + } + if ((e->key.keysym.mod & KMOD_CTRL) && !(e->key.keysym.mod & ~KMOD_CTRL)) { + switch (s) { + case SDL_SCANCODE_X: editor_key(STBTE_act_cut ); break; + case SDL_SCANCODE_C: editor_key(STBTE_act_copy ); break; + case SDL_SCANCODE_V: editor_key(STBTE_act_paste); break; + case SDL_SCANCODE_Z: editor_key(STBTE_act_undo ); break; + case SDL_SCANCODE_Y: editor_key(STBTE_act_redo ); break; + } + } + } + #endif + break; + } + case SDL_KEYUP: { + int k = e->key.keysym.sym; + int s = e->key.keysym.scancode; + if (s == SDL_SCANCODE_D) active_control_clear(0); + if (s == SDL_SCANCODE_A) active_control_clear(1); + if (s == SDL_SCANCODE_W) active_control_clear(2); + if (s == SDL_SCANCODE_S) active_control_clear(3); + if (k == SDLK_SPACE) active_control_clear(4); + if (s == SDL_SCANCODE_LCTRL) active_control_clear(5); + if (s == SDL_SCANCODE_S) active_control_clear(6); + if (s == SDL_SCANCODE_D) active_control_clear(7); + break; + } + } +} + +static SDL_GLContext *context; + +static float getTimestep(float minimum_time) +{ + float elapsedTime; + double thisTime; + static double lastTime = -1; + + if (lastTime == -1) + lastTime = SDL_GetTicks() / 1000.0 - minimum_time; + + for(;;) { + thisTime = SDL_GetTicks() / 1000.0; + elapsedTime = (float) (thisTime - lastTime); + if (elapsedTime >= minimum_time) { + lastTime = thisTime; + return elapsedTime; + } + // @TODO: compute correct delay + SDL_Delay(1); + } +} + +void APIENTRY gl_debug(GLenum source, GLenum type, GLuint id, GLenum severity, GLsizei length, const GLchar *message, const void *param) +{ + ods("%s\n", message); +} + +int is_synchronous_debug; +void enable_synchronous(void) +{ + glEnable(GL_DEBUG_OUTPUT_SYNCHRONOUS_ARB); + is_synchronous_debug = 1; +} + +void prepare_threads(void); + +//void stbwingraph_main(void) +int SDL_main(int argc, char **argv) +{ + SDL_Init(SDL_INIT_VIDEO); + + prepare_threads(); + + SDL_GL_SetAttribute(SDL_GL_RED_SIZE , 8); + SDL_GL_SetAttribute(SDL_GL_GREEN_SIZE, 8); + SDL_GL_SetAttribute(SDL_GL_BLUE_SIZE , 8); + SDL_GL_SetAttribute(SDL_GL_DEPTH_SIZE, 24); + + SDL_GL_SetAttribute(SDL_GL_CONTEXT_PROFILE_MASK, SDL_GL_CONTEXT_PROFILE_COMPATIBILITY); + SDL_GL_SetAttribute(SDL_GL_CONTEXT_MAJOR_VERSION, 3); + SDL_GL_SetAttribute(SDL_GL_CONTEXT_MINOR_VERSION, 1); + + #ifdef GL_DEBUG + SDL_GL_SetAttribute(SDL_GL_CONTEXT_FLAGS, SDL_GL_CONTEXT_DEBUG_FLAG); + #endif + + SDL_GL_SetAttribute(SDL_GL_MULTISAMPLESAMPLES, 4); + + screen_x = 1920; + screen_y = 1080; + + window = SDL_CreateWindow("caveview", SDL_WINDOWPOS_UNDEFINED, SDL_WINDOWPOS_UNDEFINED, + screen_x, screen_y, + SDL_WINDOW_OPENGL | SDL_WINDOW_RESIZABLE + ); + if (!window) error("Couldn't create window"); + + context = SDL_GL_CreateContext(window); + if (!context) error("Couldn't create context"); + + SDL_GL_MakeCurrent(window, context); // is this true by default? + + SDL_SetRelativeMouseMode(SDL_TRUE); + #if defined(_MSC_VER) && _MSC_VER < 1300 + // work around broken behavior in VC6 debugging + if (IsDebuggerPresent()) + SDL_SetHint(SDL_HINT_MOUSE_RELATIVE_MODE_WARP, "1"); + #endif + + stbgl_initExtensions(); + + #ifdef GL_DEBUG + if (glDebugMessageCallbackARB) { + glDebugMessageCallbackARB(gl_debug, NULL); + + enable_synchronous(); + } + #endif + + SDL_GL_SetSwapInterval(1); + + render_init(); + mesh_init(); + world_init(); + + initialized = 1; + + while (!quit) { + SDL_Event e; + while (SDL_PollEvent(&e)) + process_event(&e); + + loopmode(getTimestep(0.0166f/8), 1, 1); + } + + return 0; +}