231 lines
8.1 KiB
C
231 lines
8.1 KiB
C
#pragma once
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struct Bitmap {
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union {
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U32 *pixels;
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U64 id;
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};
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union {
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Vec2I size;
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struct {
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S32 x, y;
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};
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};
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Vec2 align;
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};
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enum EventKind {
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EventKind_None,
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EventKind_KeyDown,
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EventKind_KeyUp,
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EventKind_MouseMove,
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EventKind_MouseWheel,
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EventKind_KeyboardText,
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};
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enum Key {
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Key_None,
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Key_Up,
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Key_Down,
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Key_Left,
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Key_Right,
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Key_Escape,
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Key_F1,
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Key_F2,
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Key_F3,
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Key_F4,
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Key_F5,
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Key_F6,
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Key_F7,
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Key_F8,
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Key_F9,
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Key_F10,
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Key_F11,
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Key_F12,
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Key_MouseLeft,
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Key_MouseRight,
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Key_MouseMiddle,
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Key_0 = '0',
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Key_1,
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Key_2,
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Key_3,
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Key_4,
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Key_5,
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Key_6,
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Key_7,
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Key_8,
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Key_9 = '9',
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Key_A = 'a',
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Key_B,
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Key_C,
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Key_D,
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Key_E,
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Key_F,
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Key_G,
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Key_H,
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Key_I,
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Key_J,
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Key_K,
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Key_L,
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Key_M,
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Key_N,
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Key_O,
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Key_P,
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Key_Q,
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Key_R,
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Key_S,
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Key_T,
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Key_U,
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Key_V,
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Key_W,
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Key_X,
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Key_Y,
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Key_Z = 'z',
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Key_Count = 256,
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};
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#define KEY_MAPPING \
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X(Up, VK_UP) \
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X(Down, VK_DOWN) \
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X(Left, VK_LEFT) \
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X(Right, VK_RIGHT) \
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X(Escape, VK_ESCAPE) \
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X(F1, VK_F1) \
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X(F2, VK_F2) \
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X(F3, VK_F3) \
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X(F4, VK_F4) \
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X(F5, VK_F5) \
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X(F6, VK_F6) \
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X(F7, VK_F7) \
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X(F8, VK_F8) \
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X(F9, VK_F9) \
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X(F10, VK_F10) \
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X(F11, VK_F11) \
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X(F12, VK_F12) \
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X(A, 65) \
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X(B, 66) \
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X(C, 67) \
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X(D, 68) \
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X(E, 69) \
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X(F, 70) \
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X(G, 71) \
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X(H, 72) \
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X(I, 73) \
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X(J, 74) \
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X(K, 75) \
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X(L, 76) \
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X(M, 77) \
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X(N, 78) \
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X(O, 79) \
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X(P, 80) \
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X(Q, 81) \
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X(R, 82) \
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X(S, 83) \
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X(T, 84) \
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X(U, 85) \
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X(V, 86) \
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X(W, 87) \
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X(X, 88) \
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X(Y, 89) \
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X(Z, 90) \
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X(0, 48) \
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X(1, 49) \
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X(2, 50) \
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X(3, 51) \
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X(4, 52) \
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X(5, 53) \
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X(6, 54) \
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X(7, 55) \
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X(8, 56) \
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X(9, 57)
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struct DigitalKey {
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bool pressed;
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bool down;
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bool released;
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};
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enum RenderBackend {
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RenderBackend_Software,
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RenderBackend_OpenGL1,
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};
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struct OS {
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bool quit;
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bool initialized;
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Arena *frame_arena;
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Arena *perm_arena;
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F64 ms_per_frame;
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bool window_resizable;
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bool window_was_resized;
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String window_title;
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Vec2I window_size;
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Vec2I window_pos;
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RenderBackend render_backend;
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Bitmap *screen;
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Vec2I monitor_size;
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F32 dpi_scale;
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F64 fps;
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F64 delta_time;
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F64 time;
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U64 frame;
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F64 update_time;
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U64 update_begin_cycles;
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U64 update_end_cycles;
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F64 frame_start_time;
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F64 app_start_time;
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B32 cursor_visible;
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DigitalKey key[Key_Count];
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F32 mouse_wheel;
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Vec2I mouse_pos;
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Vec2I delta_mouse_pos;
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String text;
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char platform[256];
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struct {
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char *vendor;
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char *version;
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char *renderer;
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char *extensions;
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} opengl;
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};
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struct FontGlyph {
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F32 xadvance;
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U32 codepoint;
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Bitmap bitmap;
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};
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struct Font {
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F32 line_advance;
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F32 ascent;
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F32 descent;
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F32 height;
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FontGlyph *glyphs;
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U32 glyphs_len;
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};
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struct Audio;
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#define AUDIO_CALLBACK(name) void name(Audio *audio, U32* buffer, U32 frames_to_fill)
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typedef AUDIO_CALLBACK(AudioCallback);
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struct Audio {
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AudioCallback *callback;
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B32 initialized;
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U32 samples_per_second;
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U32 number_of_channels;
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// NOTE: one frame is 2 samples (left, right) 32 bits if
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// one sample is equal 16 bit
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U32 buffer_frame_count;
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U32 latency_frame_count;
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S32 bits_per_sample;
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char platform[128];
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};
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