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Diffstat (limited to 'sim.hpp')
| -rw-r--r-- | sim.hpp | 148 |
1 files changed, 148 insertions, 0 deletions
@@ -0,0 +1,148 @@ +#include <Box2D.h> +// enums with a specified width are a clang C extension & available in C++11 +#if defined __clang__ || __cplusplus >= 201103L +#define ENUM_U8 typedef enum : u8 +#define ENUM_U8_END(name) name +#define ENUM_U16 typedef enum : u16 +#define ENUM_U16_END(name) name +#else +#define ENUM_U8 enum +#define ENUM_U8_END(name) ; typedef u8 name +#define ENUM_U16 enum +#define ENUM_U16_END(name) ; typedef u16 name +#endif + + +#ifdef __GNUC__ +#define maybe_unused __attribute__((unused)) +#else +#define maybe_unused +#endif + +typedef void (APIENTRY *GLAttachShader)(GLuint program, GLuint shader); +typedef void (APIENTRY *GLCompileShader)(GLuint shader); +typedef GLuint (APIENTRY *GLCreateProgram)(void); +typedef GLuint (APIENTRY *GLCreateShader)(GLenum shaderType); +typedef void (APIENTRY *GLDeleteProgram)(GLuint program); +typedef void (APIENTRY *GLDeleteShader)(GLuint shader); +typedef GLint (APIENTRY *GLGetAttribLocation)(GLuint program, const char *name); +typedef void (APIENTRY *GLGetProgramInfoLog)(GLuint program, GLsizei maxLength, GLsizei *length, char *infoLog); +typedef void (APIENTRY *GLGetProgramiv)(GLuint program, GLenum pname, GLint *params); +typedef void (APIENTRY *GLGetShaderInfoLog)(GLuint shader, GLsizei maxLength, GLsizei *length, char *infoLog); +typedef void (APIENTRY *GLGetShaderiv)(GLuint shader, GLenum pname, GLint *params); +typedef GLint (APIENTRY *GLGetUniformLocation)(GLuint program, char const *name); +typedef void (APIENTRY *GLLinkProgram)(GLuint program); +typedef void (APIENTRY *GLShaderSource)(GLuint shader, GLsizei count, const char *const *string, const GLint *length); +typedef void (APIENTRY *GLUniform1f)(GLint location, GLfloat v0); +typedef void (APIENTRY *GLUniform2f)(GLint location, GLfloat v0, GLfloat v1); +typedef void (APIENTRY *GLUniform3f)(GLint location, GLfloat v0, GLfloat v1, GLfloat v2); +typedef void (APIENTRY *GLUniform4f)(GLint location, GLfloat v0, GLfloat v1, GLfloat v2, GLfloat v3); +typedef void (APIENTRY *GLUniform1i)(GLint location, GLint v0); +typedef void (APIENTRY *GLUniform2i)(GLint location, GLint v0, GLint v1); +typedef void (APIENTRY *GLUniform3i)(GLint location, GLint v0, GLint v1, GLint v2); +typedef void (APIENTRY *GLUniform4i)(GLint location, GLint v0, GLint v1, GLint v2, GLint v3); +typedef void (APIENTRY *GLUniformMatrix4fv)(GLint location, GLsizei count, GLboolean transpose, const GLfloat *value); +typedef void (APIENTRY *GLUseProgram)(GLuint program); +typedef void (APIENTRY *GLVertexAttrib1f)(GLuint index, GLfloat v0); +typedef void (APIENTRY *GLVertexAttrib2f)(GLuint index, GLfloat v0, GLfloat v1); +typedef void (APIENTRY *GLVertexAttrib3f)(GLuint index, GLfloat v0, GLfloat v1, GLfloat v2); +typedef void (APIENTRY *GLVertexAttrib4f)(GLuint index, GLfloat v0, GLfloat v1, GLfloat v2, GLfloat v3); + +typedef struct { + GLAttachShader AttachShader; + GLCompileShader CompileShader; + GLCreateProgram CreateProgram; + GLCreateShader CreateShader; + GLDeleteProgram DeleteProgram; + GLDeleteShader DeleteShader; + GLGetAttribLocation GetAttribLocation; + GLGetProgramInfoLog GetProgramInfoLog; + GLGetProgramiv GetProgramiv; + GLGetShaderInfoLog GetShaderInfoLog; + GLGetShaderiv GetShaderiv; + GLGetUniformLocation GetUniformLocation; + GLLinkProgram LinkProgram; + GLShaderSource ShaderSource; + GLUniform1f Uniform1f; + GLUniform2f Uniform2f; + GLUniform3f Uniform3f; + GLUniform4f Uniform4f; + GLUniform1i Uniform1i; + GLUniform2i Uniform2i; + GLUniform3i Uniform3i; + GLUniform4i Uniform4i; + GLUniformMatrix4fv UniformMatrix4fv; + GLUseProgram UseProgram; + GLVertexAttrib1f VertexAttrib1f; + GLVertexAttrib2f VertexAttrib2f; + GLVertexAttrib3f VertexAttrib3f; + GLVertexAttrib4f VertexAttrib4f; +} GL; + +typedef struct { + GLuint program; +#if DEBUG + char vertex_filename[32]; + char fragment_filename[32]; + struct timespec last_modified; +#endif +} ShaderBase; + +typedef GLuint VertexAttributeLocation; +typedef GLint UniformLocation; + +// shader for platforms +typedef struct { + ShaderBase base; + VertexAttributeLocation vertex_p1, vertex_p2; // endpoints of platform + UniformLocation uniform_thickness; // this is half the "width" of the platform + UniformLocation uniform_transform; // 4x4 matrix position is multiplied by +} ShaderPlatform; + +typedef struct { + ShaderBase base; + UniformLocation uniform_transform, uniform_center, uniform_radius; +} ShaderBall; + +typedef struct { + v2 center; + float size; + float angle; +} Platform; + +typedef struct { + v2 pos; // position + float radius; + b2Body *body; +} Ball; + +typedef struct { + bool initialized; + + i32 win_width, win_height; // width,height of window + float gl_width; // width of window in GL coordinates; height is always 1 + + float dt; // time in seconds since last frame + m4 transform; // the transform for converting our coordinates to GL coordinates + + GL gl; // gl functions + ShaderPlatform shader_platform; + ShaderBall shader_ball; + + b2World *world; + + Ball ball; + + float platform_thickness; + u32 nplatforms; + Platform platforms[1000]; + + u32 tmp_mem_used; // this is not measured in bytes, but in MaxAligns +#define TMP_MEM_BYTES (4L<<20) + MaxAlign tmp_mem[TMP_MEM_BYTES / sizeof(MaxAlign)]; +#if DEBUG + u32 magic_number; + #define MAGIC_NUMBER 0x1234ACAB +#endif +} State; + |