71 lines
2.3 KiB
C
71 lines
2.3 KiB
C
#ifndef TWN_UTIL_H
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#define TWN_UTIL_H
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#include "twn_types.h"
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#include "twn_engine_api.h"
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#include <stdint.h>
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#include <stddef.h>
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#include <stdbool.h>
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#ifndef TWN_NOT_C
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#include <math.h>
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#ifndef M_PI
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#define M_PI 3.14159265358979323846264338327950288 /**< pi */
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#endif
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/* multiply by these to convert degrees <---> radians */
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#define DEG2RAD (M_PI / 180)
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#define RAD2DEG (180 / M_PI)
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TWN_API void log_info(const char *restrict format, ...);
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TWN_API void log_critical(const char *restrict format, ...);
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TWN_API void log_warn(const char *restrict format, ...);
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/* saves all texture atlases as BMP files in the write directory */
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TWN_API void textures_dump_atlases(void);
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/* TODO: this is why generics were invented. sorry, i'm tired today */
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TWN_API float clampf(float f, float min, float max);
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/* sets buf_out to a pointer to a byte buffer which must be freed. */
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/* returns the size of this buffer. */
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TWN_API int64_t file_to_bytes(const char *path, unsigned char **buf_out);
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/* returns a pointer to a string which must be freed */
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TWN_API char *file_to_str(const char *path);
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/* returns true if the file exists in the filesystem */
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TWN_API bool file_exists(const char *path);
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#endif /* TWN_NOT_C */
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/* read file to null terminated string, it is freed when the frame ends */
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TWN_API char const *file_read(char const *file);
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/* calculates the overlap of two rectangles */
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TWN_API Rect rect_overlap(Rect a, Rect b);
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/* returns true if two rectangles are intersecting */
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TWN_API bool rect_intersects(Rect a, Rect b);
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/* decrements a floating point second-based timer, stopping at 0.0f */
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/* meant for poll based real time logic in game logic */
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/* note that it should be decremented only on the next tick after its creation */
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TWN_API float timer_tick_seconds(float seconds_left);
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typedef struct TimerElapseSecondsResult {
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float seconds_left; float interval; bool elapsed;
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} TimerElapseSecondsResult;
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TWN_API TimerElapseSecondsResult timer_elapse_seconds(float seconds_left, float interval);
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TWN_API void log_vec2(Vec2 value, char const *identity);
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TWN_API void log_vec3(Vec3 value, char const *identity);
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TWN_API void log_rect(Rect value, char const *identity);
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TWN_API void profile_start(char const *profile);
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TWN_API void profile_end(char const *profile);
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#endif
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