toggle to disable features w/ depends

2 files changed, 75 insertions, 12 deletions

diff --git a/lzr.c b/lzr.c
index 62216ad..d1483ca 100644
--- a/lzr.c
+++ b/lzr.c
@@ -1,9 +1,15 @@
 /* Licensing information can be found at the end of the file. */
 #include "lzr.h"
 #include <SDL2/SDL.h>
+#ifdef LZR_ENABLE_GFX
 #include <SDL2/SDL2_gfxPrimitives.h>
+#endif
+#ifdef LZR_ENABLE_IMAGE
 #include <SDL2/SDL_image.h>
+#endif
+#ifdef LZR_ENABLE_MIXER
 #include <SDL2/SDL_mixer.h>
+#endif
 #include <stdbool.h>
 #include <stdint.h>
 #include <string.h>
@@ -32,14 +38,17 @@ static unsigned int map[LZR_BUTTON_COUNT] = {
 static bool input[LZR_BUTTON_COUNT] = {false};
 static SDL_Point *points = NULL;
 static uint64_t tick = 0;
-static Mix_Chunk *sounds[LZR_MAX_SOUNDS] = {0};
-static Mix_Music *music = NULL;
 static int off_x = 0;
 static int off_y = 0;
 static float scale = 1.0;
 static int mouse_x = 0;
 static int mouse_y = 0;
 
+#ifdef LZR_ENABLE_MIXER
+static Mix_Chunk *sounds[LZR_MAX_SOUNDS] = {0};
+static Mix_Music *music = NULL;
+#endif
+
 static char *_strdup(const char *str)
 {
 	char *const cpy = malloc(strlen(str) + 1);
@@ -60,6 +69,7 @@ static int _scode_to_button(unsigned int scode)
 static void _draw_btn(SDL_Renderer *ren, int btn, int x, int y,
                       unsigned int size)
 {
+#ifdef LZR_ENABLE_GFX
 	const unsigned int size_2thirds = size * 2 / 3;
 	switch (btn) {
 	case LZR_BUTTON_LEFT:
@@ -94,6 +104,9 @@ static void _draw_btn(SDL_Renderer *ren, int btn, int x, int y,
 	default:
 		break;
 	}
+#else
+	(void)ren, (void)btn, (void)x, (void)y, (void)size;
+#endif
 }
 
 static void _bind_menu(void)
@@ -161,10 +174,13 @@ int LZR_Init(LZR_Config cfg)
 		SDL_Log("%s", SDL_GetError());
 		return -1;
 	}
+#ifdef LZR_ENABLE_IMAGE
 	if (IMG_Init(IMG_INIT_PNG) != IMG_INIT_PNG) {
 		SDL_Log("%s", IMG_GetError());
 		return -1;
 	}
+#endif
+#ifdef LZR_ENABLE_MIXER
 	if (Mix_Init(MIX_INIT_OGG) != MIX_INIT_OGG) {
 		SDL_Log("%s", Mix_GetError());
 		return -1;
@@ -173,6 +189,7 @@ int LZR_Init(LZR_Config cfg)
 		SDL_Log("%s", Mix_GetError());
 		return -1;
 	}
+#endif
 	basepath = SDL_GetBasePath();
 	if (basepath == NULL) {
 		SDL_Log("%s", SDL_GetError());
@@ -215,12 +232,16 @@ int LZR_Init(LZR_Config cfg)
 void LZR_Quit(void)
 {
 	LZR_StopMusic();
+#ifdef LZR_ENABLE_MIXER
 	for (int i = 0; i < LZR_MAX_SOUNDS; i++)
 		if (sounds[i] != NULL) {
 			Mix_FreeChunk(sounds[i]);
 			sounds[i] = NULL;
 			SDL_Log("destroyed sound %d", i);
 		}
+	Mix_CloseAudio();
+	Mix_Quit();
+#endif
 	for (int i = 0; i < LZR_MAX_IMAGES; i++)
 		if (images[i].tex != NULL) {
 			SDL_DestroyTexture(images[i].tex);
@@ -247,9 +268,9 @@ void LZR_Quit(void)
 		SDL_free(basepath);
 		basepath = NULL;
 	}
-	Mix_CloseAudio();
-	Mix_Quit();
+#ifdef LZR_ENABLE_IMAGE
 	IMG_Quit();
+#endif
 	SDL_Quit();
 }
 
@@ -293,14 +314,18 @@ int LZR_ImageLoad(const char *path)
 		SDL_Log("LZR_PathPrefix failed");
 		return -1;
 	}
-	SDL_Surface *const bmp = IMG_Load(apath);
+#ifdef LZR_ENABLE_IMAGE
+	SDL_Surface *const surf = IMG_Load(apath);
+#else
+	SDL_Surface *const surf = SDL_LoadBMP(apath);
+#endif
 	free(apath);
-	if (bmp == NULL) {
+	if (surf == NULL) {
 		SDL_Log("%s: %s", path, SDL_GetError());
 		return -1;
 	}
-	SDL_Texture *const tex = SDL_CreateTextureFromSurface(renderer, bmp);
-	SDL_FreeSurface(bmp);
+	SDL_Texture *const tex = SDL_CreateTextureFromSurface(renderer, surf);
+	SDL_FreeSurface(surf);
 	if (tex == NULL) {
 		SDL_Log("%s", SDL_GetError());
 		return -1;
@@ -320,6 +345,7 @@ int LZR_ImageLoad(const char *path)
 
 int LZR_SoundLoad(const char *path, float volume)
 {
+#ifdef LZR_ENABLE_MIXER
 	int i;
 	for (i = 0; i < LZR_MAX_SOUNDS; i++)
 		if (sounds[i] == NULL)
@@ -342,6 +368,10 @@ int LZR_SoundLoad(const char *path, float volume)
 	Mix_VolumeChunk(chunk, volume * MIX_MAX_VOLUME);
 	sounds[i] = chunk;
 	return i;
+#else
+	(void)path, (void)volume;
+	return -1;
+#endif
 }
 
 bool LZR_PollEvent(LZR_Event *e)
@@ -564,16 +594,23 @@ int LZR_DrawRectangle(bool fill, int x, int y, int w, int h)
 
 int LZR_DrawCircle(bool fill, int x, int y, int radius)
 {
+#ifdef LZR_ENABLE_GFX
 	if ((fill ? filledCircleRGBA : circleRGBA)(renderer, x, y, radius,
 	                                           UNPACKED_COLOR, 255) < 0) {
 		SDL_Log("%s", SDL_GetError());
 		return -1;
 	}
 	return 0;
+#else
+	(void)fill, (void)x, (void)y, (void)radius;
+	SDL_Log("LZR GFX module is disabled");
+	return -1;
+#endif
 }
 
 int LZR_DrawPolygon(bool fill, int *vx, int *vy, int n)
 {
+#ifdef LZR_ENABLE_GFX
 	if (n > 32) {
 		SDL_Log("%d > 32", n);
 		return -1;
@@ -587,6 +624,11 @@ int LZR_DrawPolygon(bool fill, int *vx, int *vy, int n)
 		return -1;
 	}
 	return 0;
+#else
+	(void)fill, (void)vx, (void)vy, (void)n;
+	SDL_Log("LZR GFX module is disabled");
+	return -1;
+#endif
 }
 
 int LZR_DrawImage(int id, int x, int y)
@@ -701,6 +743,7 @@ int LZR_DrawTile(int id, int tile, int x, int y, double rot, int flip)
 
 int LZR_PlaySound(int id)
 {
+#ifdef LZR_ENABLE_MIXER
 	if (id < 0) {
 		SDL_Log("id is negative");
 		return -1;
@@ -714,19 +757,31 @@ int LZR_PlaySound(int id)
 		return -1;
 	}
 	return 0;
+#else
+	(void)id;
+	SDL_Log("LZR MIXER module is disabled");
+	return -1;
+#endif
 }
 
 int LZR_SetMusicVolume(float volume)
 {
+#ifdef LZR_ENABLE_MIXER
 	if (Mix_VolumeMusic(volume * MIX_MAX_VOLUME) < 0) {
 		SDL_Log("%s", Mix_GetError());
 		return -1;
 	}
 	return 0;
+#else
+	(void)volume;
+	SDL_Log("LZR MIXER module is disabled");
+	return -1;
+#endif
 }
 
 int LZR_PlayMusic(const char *path, int loops)
 {
+#ifdef LZR_ENABLE_MIXER
 	LZR_StopMusic();
 	char *const apath = LZR_PathPrefix(path);
 	if (apath == NULL) {
@@ -745,16 +800,23 @@ int LZR_PlayMusic(const char *path, int loops)
 	}
 	Mix_RewindMusic();
 	return 0;
+#else
+	(void)path, (void)loops;
+	SDL_Log("LZR MIXER module is disabled");
+	return -1;
+#endif
 }
 
 void LZR_StopMusic(void)
 {
+#ifdef LZR_ENABLE_MIXER
 	if (Mix_PlayingMusic())
 		Mix_HaltMusic();
 	if (music != NULL) {
 		Mix_FreeMusic(music);
 		music = NULL;
 	}
+#endif
 }
 
 void LZR_ToggleFullscreen(void)
diff --git a/lzr.h b/lzr.h
index 0e2ae10..fb0d594 100644
--- a/lzr.h
+++ b/lzr.h
@@ -1,9 +1,12 @@
 /* Licensing informations can be found at the end of the file. */
-#ifndef LZR_H_
-#define LZR_H_
+#pragma once
 #include <stdbool.h>
 #include <stdint.h>
 
+#define LZR_ENABLE_IMAGE
+#define LZR_ENABLE_MIXER
+#define LZR_ENABLE_GFX
+
 #define LZR_MAX_IMAGES  32
 #define LZR_MAX_SOUNDS  64
 #define LZR_BUTTON(btn) LZR_ButtonDown(LZR_BUTTON_##btn)
@@ -82,8 +85,6 @@ uint64_t LZR_GetTick(void);
 void LZR_ScreenTransform(int *x, int *y);
 void LZR_MousePosition(int *x, int *y);
 
-#endif
-
 /*
 ** Copyright (c) 2022 kdx
 **