Restore files, implement 30 FPS cap

The files are retrieved from the older Izanami project.

A basic 30 FPS cap has been implemented for rendering.

CMakeLists.txt

@@ -7,7 +7,7 @@ set(SDL2PATH "${PROJECT_SOURCE_DIR}/dependencies/SDL2-2.0.16/x86_64-w64-mingw32"
 find_package(SDL2 REQUIRED)
 include_directories(${SDL2_INCLUDE_DIR})
 
-add_executable(izanami src/packages/game/main.c src/packages/game/math/IZ_vector.c src/packages/game/math/IZ_vector.h src/packages/game/math/IZ_math.c src/packages/game/math/IZ_math.h src/packages/game/core/IZ_placeable.c src/packages/game/core/IZ_placeable.h src/packages/game/core/IZ_movable.c src/packages/game/core/IZ_movable.h src/packages/game/core/IZ_spatial.c src/packages/game/core/IZ_spatial.h)
+add_executable(izanami src/packages/game/main.c src/packages/game/math/IZ_vector.c src/packages/game/math/IZ_vector.h src/packages/game/math/IZ_math.c src/packages/game/math/IZ_math.h src/packages/game/core/IZ_placeable.c src/packages/game/core/IZ_placeable.h src/packages/game/core/IZ_movable.c src/packages/game/core/IZ_movable.h src/packages/game/core/IZ_spatial.c src/packages/game/core/IZ_spatial.h src/packages/game/input/IZ_action.c src/packages/game/input/IZ_action.h src/packages/game/config/IZ_config.c src/packages/game/config/IZ_config.h src/packages/game/config/IZ_config_window.c src/packages/game/config/IZ_config_window.h src/packages/game/config/IZ_config_mapping.c src/packages/game/config/IZ_config_mapping.h src/packages/game/config/IZ_config_pool.c src/packages/game/config/IZ_config_pool.h src/packages/game/core/IZ_constants.h)
 
 target_link_libraries(izanami ${SDL2_LIBRARY})
 

src/packages/game/config/IZ_config.c

@@ -0,0 +1 @@
+#include "IZ_config.h"

src/packages/game/config/IZ_config.h

@@ -0,0 +1,49 @@
+#ifndef IZ_CONFIG_H
+#define IZ_CONFIG_H
+
+#include "../core/IZ_constants.h"
+
+#include "IZ_config_mapping.h"
+#include "IZ_config_pool.h"
+#include "IZ_config_window.h"
+
+/**
+ * File path of the configuration file.
+ */
+static const char* IZ_CONFIG_FILE_PATH = "config.ini";
+
+/**
+ * Structure that defines the application's internal configuration.
+ */
+typedef struct {
+	/**
+	 * Window configuration.
+	 */
+	IZ_ConfigWindow window;
+	/**
+	 * Pool configuration.
+	 */
+	IZ_ConfigPool pool;
+	/**
+	 * Keyboard and joystick mappings for each controllable agent.
+	 */
+	IZ_ConfigMapping mapping[IZ_MAX_PLAYERS];
+} IZ_Config;
+
+/**
+ * Writes the configuration to a file.
+ * @param config The pointer to the configuration data.
+ * @param filename The filename of the destination file.
+ * @return Result code of the operation.
+ */
+unsigned int IZ_ConfigSave(IZ_Config* config, const char* filename);
+
+/**
+ * Reads the configuration from a file.
+ * @param config The pointer to the configuration data.
+ * @param filename The filename of the destination file.
+ * @return Error message, or NULL if there are no errors.
+ */
+unsigned int IZ_ConfigLoad(IZ_Config* config, const char* filename);
+
+#endif

src/packages/game/config/IZ_config_mapping.c

@@ -0,0 +1 @@
+#include "IZ_config_mapping.h"

src/packages/game/config/IZ_config_mapping.h

@@ -0,0 +1,20 @@
+#ifndef IZ_CONFIG_MAPPING_H
+#define IZ_CONFIG_MAPPING_H
+
+/**
+ * Structure that defines the application's input configuration.
+ */
+typedef struct {
+	/**
+	 * Mapping of keyboard scan codes to each action.
+	 */
+	unsigned int keyboard[16];
+	/**
+	 * Mapping of joystick buttons to each action.
+	 *
+	 * Note: directional actions are not included here.
+	 */
+	unsigned int joystick[12];
+} IZ_ConfigMapping;
+
+#endif

src/packages/game/config/IZ_config_pool.c

@@ -0,0 +1 @@
+#include "IZ_config_pool.h"

src/packages/game/config/IZ_config_pool.h

@@ -0,0 +1,14 @@
+#ifndef IZ_CONFIG_POOL_H
+#define IZ_CONFIG_POOL_H
+
+/**
+ * Structure that defines the application's pools configuration.
+ */
+typedef struct {
+	/**
+	 * Capacity of the characters pool.
+	 */
+	unsigned int characters;
+} IZ_ConfigPool;
+
+#endif

src/packages/game/config/IZ_config_window.c

@@ -0,0 +1 @@
+#include "IZ_config_window.h"

src/packages/game/config/IZ_config_window.h

@@ -0,0 +1,18 @@
+#ifndef IZ_CONFIG_WINDOW_H
+#define IZ_CONFIG_WINDOW_H
+
+/**
+ * Structure that defines the application's window configuration.
+ */
+typedef struct {
+	/**
+	 * Width of the application window
+	 */
+	unsigned int width;
+	/**
+	 * Height of the application window.
+	 */
+	unsigned int height;
+} IZ_ConfigWindow;
+
+#endif

src/packages/game/core/IZ_constants.h

@@ -0,0 +1,11 @@
+#ifndef IZ_CONSTANTS_H
+#define IZ_CONSTANTS_H
+
+/**
+ * How many players can play this application?
+ *
+ * Default value: 1u
+ */
+#define IZ_MAX_PLAYERS ((unsigned short) 1u)
+
+#endif

src/packages/game/core/IZ_movable.h

@@ -7,4 +7,4 @@ typedef struct {
 	IZ_Vector velocity;
 } IZ_Movable;
 
-#endif //IZ_MOVABLE_H
+#endif

src/packages/game/core/IZ_placeable.h

@@ -7,4 +7,4 @@ typedef struct {
 	IZ_Vector location;
 } IZ_Placeable;
 
-#endif //IZ_PLACEABLE_H
+#endif

src/packages/game/core/IZ_spatial.h

@@ -8,4 +8,4 @@ typedef struct {
 	IZ_Vector size;
 } IZ_Spatial;
 
-#endif //IZ_SPATIAL_H
+#endif

src/packages/game/input/IZ_action.c

@@ -0,0 +1 @@
+#include "IZ_action.h"

src/packages/game/input/IZ_action.h

@@ -0,0 +1,102 @@
+#ifndef IZ_ACTION_H
+#define IZ_ACTION_H
+
+/**
+ * Enumeration for the actions available in the application.
+ */
+typedef enum {
+	/**
+	 * Index for the right (eastward) directional action.
+	 */
+	IZ_ACTION_INDEX_RIGHT   = 0x0u,
+	/**
+	 * Index for the down (southward) directional action.
+	 */
+	IZ_ACTION_INDEX_DOWN    = 0x1u,
+	/**
+	 * Index for the left (westward) directional action.
+	 */
+	IZ_ACTION_INDEX_LEFT    = 0x2u,
+	/**
+	 * Index for the up (northward) directional action.
+	 */
+	IZ_ACTION_INDEX_UP      = 0x3u,
+	/**
+	 * Index for the affirmative action.
+	 */
+	IZ_ACTION_INDEX_YES     = 0x4u,
+	/**
+	 * Index for the negative action.
+	 */
+	IZ_ACTION_INDEX_NO      = 0x5u,
+	/**
+	 * Index for the first implementation-defined action.
+	 */
+	IZ_ACTION_INDEX_ACTION0 = 0x6u,
+	/**
+	 * Index for the second implementation-defined action.
+	 */
+	IZ_ACTION_INDEX_ACTION1 = 0x7u,
+	/**
+	 * Index for the third implementation-defined action.
+	 */
+	IZ_ACTION_INDEX_ACTION2 = 0x8u,
+	/**
+	 * Index for the fourth implementation-defined action.
+	 */
+	IZ_ACTION_INDEX_ACTION3 = 0x9u,
+	/**
+	 * Index for the fifth implementation-defined action.
+	 */
+	IZ_ACTION_INDEX_ACTION4 = 0xAu,
+	/**
+	 * Index for the sixth implementation-defined action.
+	 */
+	IZ_ACTION_INDEX_ACTION5 = 0xBu,
+	/**
+	 * Index for the seventh implementation-defined action.
+	 */
+	IZ_ACTION_INDEX_ACTION6 = 0xCu,
+	/**
+	 * Index for the eighth implementation-defined action.
+	 */
+	IZ_ACTION_INDEX_ACTION7 = 0xDu,
+	/**
+	 * Index for the ninth implementation-defined action.
+	 */
+	IZ_ACTION_INDEX_ACTION8 = 0xEu,
+	/**
+	 * Index for the tenth implementation-defined action.
+	 */
+	IZ_ACTION_INDEX_ACTION9 = 0xFu,
+} IZ_ActionIndex;
+
+typedef short IZ_ActionFlag;
+
+inline IZ_ActionFlag IZ_ActionFlagValue(IZ_ActionIndex index) {
+	return (IZ_ActionFlag) (0x1 << index);
+}
+
+/**
+ * Names of the actions.
+ */
+static const char* IZ_ACTION_NAMES[] = {
+	"Right",
+	"Down",
+	"Left",
+	"Up",
+	"Yes",
+	"No",
+	"Action0",
+	"Action1",
+	"Action2",
+	"Action3",
+	"Action4",
+	"Action5",
+	"Action6",
+	"Action7",
+	"Action8",
+	"Action9",
+};
+
+#endif

src/packages/game/main.c

@@ -3,10 +3,13 @@
 #include <stdio.h>
 
 const char* APP_NAME = "SDL2";
-const int SCREEN_WIDTH = 640;
-const int SCREEN_HEIGHT = 480;
+const unsigned int SCREEN_WIDTH = 640;
+const unsigned int SCREEN_HEIGHT = 480;
+const unsigned int SCREEN_FPS = 30;
 
-int main(int argc, char* args[]) {
+#define SDL_GetTicks64 SDL_GetTicks
+
+int main() {
 	SDL_Window* window = NULL;
 	SDL_Surface* screenSurface = NULL;
 
@@ -19,8 +22,8 @@ int main(int argc, char* args[]) {
 		APP_NAME,
 		SDL_WINDOWPOS_UNDEFINED,
 		SDL_WINDOWPOS_UNDEFINED,
-		SCREEN_WIDTH,
-		SCREEN_HEIGHT,
+		(int) SCREEN_WIDTH,
+		(int) SCREEN_HEIGHT,
 		SDL_WINDOW_SHOWN
 	);
 
@@ -32,15 +35,38 @@ int main(int argc, char* args[]) {
 	bool quit = false;
 	SDL_Event e;
 	screenSurface = SDL_GetWindowSurface(window);
+
+	uint64_t start = SDL_GetTicks64();
+	unsigned int seconds_elapsed = 0;
+	uint64_t last_update = start;
+	unsigned int frames = 0;
 	while (!quit) {
 		while (SDL_PollEvent(&e) != 0) {
 			if (e.type == SDL_QUIT) {
 				quit = true;
 			}
-			SDL_FillRect(screenSurface, NULL, SDL_MapRGB(screenSurface->format, 0xFF, 0xFF, 0xFF));
-			SDL_UpdateWindowSurface(window);
 		}
+
+		unsigned int current_ticks = SDL_GetTicks64();
+		unsigned int delta = current_ticks - last_update;
+		unsigned int new_seconds_elapsed = current_ticks / 1000;
+
+		if (new_seconds_elapsed > seconds_elapsed) {
+			printf("%u\n", frames);
+			frames = 0;
+			seconds_elapsed = new_seconds_elapsed;
+		}
+
+		if ((float) delta < 1000.f / (float) (SCREEN_FPS + 1)) {
+			continue;
+		}
+
+		last_update = current_ticks;
+		frames += 1;
+		SDL_FillRect(screenSurface, NULL, SDL_MapRGB(screenSurface->format, 0xFF, 0xFF, 0xFF));
+		SDL_UpdateWindowSurface(window);
 	}
+
 	SDL_DestroyWindow(window);
 	SDL_Quit();
 

src/packages/game/math/IZ_math.h

@@ -7,4 +7,4 @@ typedef float IZ_Real;
 
 inline IZ_Real IZ_Sqrt(IZ_Real x) { return (IZ_Real) sqrtf(x); }
 
-#endif //IZ_MATH_H
+#endif

src/packages/game/math/IZ_vector.h

@@ -49,4 +49,4 @@ inline IZ_Real IZ_VectorDistance(IZ_Vector a, IZ_Vector b) {
 	return IZ_Sqrt(x * x + y * y);
 }
 
-#endif //IZ_VECTOR_H
+#endif