113 lines
3.6 KiB
C
113 lines
3.6 KiB
C
#ifndef __ENGINE_H
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#define __ENGINE_H
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#include "actions.h"
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#include "collisions.h"
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#include "sc/array/sc_array.h"
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#include "sc/heap/sc_heap.h"
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#include "assets.h"
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#include "particle_sys.h"
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typedef struct Scene Scene_t;
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typedef struct SFXList
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{
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SFX_t sfx[N_SFX];
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uint32_t sfx_queue[N_SFX];
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uint32_t n_sfx;
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uint32_t played_sfx;
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} SFXList_t;
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typedef struct SceneNode {
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Scene_t* scene;
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Scene_t* next;
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} SceneNode_t;
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typedef struct GameEngine {
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Scene_t **scenes;
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unsigned int max_scenes;
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unsigned int curr_scene; // Current root scene
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Assets_t assets;
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SFXList_t sfx_list;
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// Maintain own queue to handle key presses
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Scene_t* focused_scene; // The one scene to receive key inputs
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struct sc_queue_32 key_buffer;
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struct sc_queue_ptr scene_stack;
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struct sc_heap scenes_render_order;
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// This is the original size of the window.
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// This is in case of window scaling, where there needs to be
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// an absolute reference
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Vector2 intended_window_size;
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} GameEngine_t;
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#define SCENE_ACTIVE_BIT (1 << 0) // Systems Active
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#define SCENE_RENDER_BIT (1 << 1) // Whether to render
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#define SCENE_COMPLETE_ACTIVE (SCENE_ACTIVE_BIT | SCENE_RENDER_BIT)
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typedef void(*system_func_t)(Scene_t*);
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typedef void(*action_func_t)(Scene_t*, ActionType_t, bool);
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sc_array_def(system_func_t, systems);
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typedef struct RenderLayer {
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RenderTexture2D layer_tex;
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Rectangle render_area;
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}RenderLayer_t;
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typedef struct SceneRenderLayers {
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RenderLayer_t render_layers[MAX_RENDER_LAYERS];
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uint8_t n_layers;
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} SceneRenderLayers_t;
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struct Scene {
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// Not all scene needs an entity manager
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// but too late to change this
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uint32_t subsystem_init;
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EntityManager_t ent_manager;
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Scene_t* parent_scene;
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struct sc_map_64 action_map; // key -> actions
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struct sc_array_systems systems;
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SceneRenderLayers_t layers;
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Color bg_colour;
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action_func_t action_function;
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float delta_time;
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float time_scale;
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Vector2 mouse_pos;
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uint8_t state;
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ParticleSystem_t part_sys;
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GameEngine_t *engine;
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int8_t depth_index;
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SceneNode_t child_scene; // Intrusive Linked List for children scene
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};
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void init_engine(GameEngine_t* engine, Vector2 starting_win_size);
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void deinit_engine(GameEngine_t* engine);
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void process_inputs(GameEngine_t* engine, Scene_t* scene);
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void process_active_scene_inputs(GameEngine_t* engine);
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void update_curr_scene(GameEngine_t* engine);
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void render_curr_scene(GameEngine_t* engine);
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Scene_t* change_scene(GameEngine_t* engine, unsigned int idx);
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Scene_t* change_active_scene(GameEngine_t* engine, unsigned int idx);
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void change_focused_scene(GameEngine_t* engine, unsigned int idx);
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bool load_sfx(GameEngine_t* engine, const char* snd_name, uint32_t tag_idx);
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void play_sfx(GameEngine_t* engine, unsigned int tag_idx);
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void play_sfx_pitched(GameEngine_t* engine, unsigned int tag_idx, float pitch);
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void update_sfx_list(GameEngine_t* engine);
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// Inline functions, for convenience
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extern void update_scene(Scene_t* scene, float delta_time);
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extern void render_scene(Scene_t* scene);
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extern void do_action(Scene_t* scene, ActionType_t action, bool pressed);
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//void init_scene(Scene_t* scene, action_func_t action_func);
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#define ENABLE_ENTITY_MANAGEMENT_SYSTEM (1)
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#define ENABLE_PARTICLE_SYSTEM (1 << 1)
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void init_scene(Scene_t* scene, action_func_t action_func, uint32_t subsystem_init);
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bool add_scene_layer(Scene_t* scene, int width, int height, Rectangle render_area);
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void free_scene(Scene_t* scene);
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void add_child_scene(GameEngine_t* engine, unsigned int child_idx, unsigned int parent_idx);
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void remove_child_scene(GameEngine_t* engine, unsigned int idx);
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#endif // __ENGINE_H
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