1 /* 2 * Copyright (C) 2016 Google, Inc. 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #ifndef GAME_H 18 #define GAME_H 19 20 #include <string> 21 #include <vector> 22 23 class Shell; 24 25 class Game { 26 public: 27 Game(const Game &game) = delete; 28 Game &operator=(const Game &game) = delete; ~Game()29 virtual ~Game() {} 30 31 struct Settings { 32 std::string name; 33 int initial_width; 34 int initial_height; 35 int queue_count; 36 int back_buffer_count; 37 int ticks_per_second; 38 bool vsync; 39 bool animate; 40 41 bool validate; 42 bool validate_verbose; 43 44 bool no_tick; 45 bool no_render; 46 bool no_present; 47 }; settings()48 const Settings &settings() const { return settings_; } 49 attach_shell(Shell & shell)50 virtual void attach_shell(Shell &shell) { shell_ = &shell; } detach_shell()51 virtual void detach_shell() { shell_ = nullptr; } 52 attach_swapchain()53 virtual void attach_swapchain() {} detach_swapchain()54 virtual void detach_swapchain() {} 55 56 enum Key { 57 // virtual keys 58 KEY_SHUTDOWN, 59 // physical keys 60 KEY_UNKNOWN, 61 KEY_ESC, 62 KEY_UP, 63 KEY_DOWN, 64 KEY_SPACE, 65 }; on_key(Key key)66 virtual void on_key(Key key) {} on_tick()67 virtual void on_tick() {} 68 on_frame(float frame_pred)69 virtual void on_frame(float frame_pred) {} 70 71 protected: Game(const std::string & name,const std::vector<std::string> & args)72 Game(const std::string &name, const std::vector<std::string> &args) 73 : settings_(), shell_(nullptr) 74 { 75 settings_.name = name; 76 settings_.initial_width = 1280; 77 settings_.initial_height = 1024; 78 settings_.queue_count = 1; 79 settings_.back_buffer_count = 1; 80 settings_.ticks_per_second = 30; 81 settings_.vsync = true; 82 settings_.animate = true; 83 84 settings_.validate = false; 85 settings_.validate_verbose = false; 86 87 settings_.no_tick = false; 88 settings_.no_render = false; 89 settings_.no_present = false; 90 91 parse_args(args); 92 } 93 94 Settings settings_; 95 Shell *shell_; 96 97 private: parse_args(const std::vector<std::string> & args)98 void parse_args(const std::vector<std::string> &args) 99 { 100 for (auto it = args.begin(); it != args.end(); ++it) { 101 if (*it == "-b") { 102 settings_.vsync = false; 103 } else if (*it == "-w") { 104 ++it; 105 settings_.initial_width = std::stoi(*it); 106 } else if (*it == "-h") { 107 ++it; 108 settings_.initial_height = std::stoi(*it); 109 } else if (*it == "-v") { 110 settings_.validate = true; 111 } else if (*it == "--validate") { 112 settings_.validate = true; 113 } else if (*it == "-vv") { 114 settings_.validate = true; 115 settings_.validate_verbose = true; 116 } else if (*it == "-nt") { 117 settings_.no_tick = true; 118 } else if (*it == "-nr") { 119 settings_.no_render = true; 120 } else if (*it == "-np") { 121 settings_.no_present = true; 122 } 123 } 124 } 125 }; 126 127 #endif // GAME_H 128