#include <jo/jo.h> static jo_pos3Df pos, rot; static jo_palette floor_pal; static jo_camera cam; static jo_vertice cube_vertices[] = JO_3D_CUBE_VERTICES(32); static jo_3d_quad cube_quads[6]; static int box_tex_id = -1; static jo_pos3Df cube_pos; static jo_pos3Df cube_prev; static jo_pos3Df cube2_pos; static jo_pos3Df cam_posf; static jo_pos3Df cam_offset = { 0.f, 140.f, 160.f }; static float cam_lerp = 0.12f; static float cam_max_step = 14.f; static float cam_lookahead= 1.6f; static float cam_dead = 2.0f; static float cam_pitch_down = 40.f; static jo_palette *my_tga_palette_handling(void){ jo_create_palette(&floor_pal); return &floor_pal; } static void init_vdp2_floor(void){ jo_img_8bits img; img.data = JO_NULL; jo_core_tv_off(); jo_enable_background_3d_plane(JO_COLOR_Black); jo_tga_8bits_loader(&img, JO_ROOT_DIR, "WATER.TGA", 0); jo_background_3d_plane_a_img(&img, floor_pal.id, true, true); jo_free_img(&img); jo_core_tv_on(); } static void create_textured_cube(void){ jo_3d_create_cube(cube_quads, cube_vertices); for (int i = 0; i < 6; ++i) jo_3d_set_texture(&cube_quads[i], box_tex_id); } static void my_input(void){ const float sx = 3.0f, sy = 3.0f, sz = 4.0f; if (jo_is_pad1_key_pressed(JO_KEY_UP)) cube_pos.z -= sz; else if (jo_is_pad1_key_pressed(JO_KEY_DOWN)) cube_pos.z += sz; if (jo_is_pad1_key_pressed(JO_KEY_LEFT)) cube_pos.x += sx; else if (jo_is_pad1_key_pressed(JO_KEY_RIGHT)) cube_pos.x -= sx; if (jo_is_pad1_key_pressed(JO_KEY_L)) cube_pos.y += sy; else if (jo_is_pad1_key_pressed(JO_KEY_R)) cube_pos.y -= sy; } static float __absf(float v){ return v < 0.f ? -v : v; } static float __clampf(float v,float m){ if (v>m) return m; if (v<-m) return -m; return v; } static void update_camera_follow(void){ const float vx = cube_pos.x - cube_prev.x; const float vy = cube_pos.y - cube_prev.y; const float vz = cube_pos.z - cube_prev.z; const float want_x = cube_pos.x + cam_offset.x; const float want_y = cube_pos.y + cam_offset.y; const float want_z = cube_pos.z + cam_offset.z; float dx = want_x - cam_posf.x; float dy = want_y - cam_posf.y; float dz = want_z - cam_posf.z; if (__absf(dx) > cam_dead) cam_posf.x += __clampf(dx * cam_lerp, cam_max_step); if (__absf(dy) > cam_dead) cam_posf.y += __clampf(dy * cam_lerp, cam_max_step); if (__absf(dz) > cam_dead) cam_posf.z += __clampf(dz * cam_lerp, cam_max_step); const float tgt_x = cube_pos.x + vx * cam_lookahead; const float tgt_y = cube_pos.y - cam_pitch_down + vy * cam_lookahead; const float tgt_z = cube_pos.z + vz * cam_lookahead; jo_3d_camera_set_viewpoint(&cam, (int)cam_posf.x, (int)cam_posf.y, (int)cam_posf.z); jo_3d_camera_set_target(&cam, (int)tgt_x, (int)tgt_y, (int)tgt_z); cube_prev = cube_pos; } static void draw_scene(void){ jo_printf(0, 1, "UP/DOWN: Z LEFT/RIGHT: X L/R: Y"); jo_printf(0, 27, "Cubo : X=%d Y=%d Z=%d ", (int)cube_pos.x, (int)cube_pos.y, (int)cube_pos.z); jo_printf(0, 28, "Cam : X=%d Y=%d Z=%d ", (int)cam_posf.x, (int)cam_posf.y, (int)cam_posf.z); jo_printf(0, 29, "Cubo2: X=%d Y=%d Z=%d ", (int)cube2_pos.x, (int)cube2_pos.y, (int)cube2_pos.z); update_camera_follow(); jo_3d_camera_look_at(&cam); jo_3d_push_matrix(); jo_3d_rotate_matrix_rad(rot.x, rot.y, rot.z); jo_3d_translate_matrixf(pos.x, pos.y, pos.z); jo_background_3d_plane_a_draw(true); jo_3d_pop_matrix(); jo_3d_push_matrix(); jo_3d_translate_matrix((int)cube_pos.x, (int)cube_pos.y, (int)cube_pos.z); jo_3d_draw_array(cube_quads, 6); jo_3d_pop_matrix(); jo_3d_push_matrix(); jo_3d_translate_matrix((int)cube2_pos.x, (int)cube2_pos.y, (int)cube2_pos.z); jo_3d_draw_array(cube_quads, 6); jo_3d_pop_matrix(); } void jo_main(void){ jo_core_init(JO_COLOR_Black); jo_set_tga_palette_handling(my_tga_palette_handling); jo_3d_camera_init(&cam); init_vdp2_floor(); box_tex_id = jo_sprite_add_tga(JO_ROOT_DIR, "BOX.TGA", JO_COLOR_Transparent); create_textured_cube(); pos.x = 800.0f; pos.y = -32.0f; pos.z = -35.0f; rot.x = JO_DEG_TO_RAD(90.0f); rot.y = JO_DEG_TO_RAD(0.0f); rot.z = JO_DEG_TO_RAD(45.0f); cube_pos.x = cube_pos.y = cube_pos.z = 0.0f; cube_prev = cube_pos; cube2_pos.x = 120.0f; cube2_pos.y = 0.0f; cube2_pos.z = 0.0f; cam_posf.x = cube_pos.x + cam_offset.x; cam_posf.y = cube_pos.y + cam_offset.y; cam_posf.z = cube_pos.z + cam_offset.z; jo_core_add_callback(my_input); jo_core_add_callback(draw_scene); jo_core_run(); }