101 lines
2.7 KiB
C
101 lines
2.7 KiB
C
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int start(int argc, char **argv) {
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window.title = fixed_string("My epic game");
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window.width = 1280;
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window.height = 720;
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window.x = 200;
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window.y = 200;
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Gfx_Image *bush_image = load_image_from_disk(fixed_string("berry_bush.png"));
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assert(bush_image, "Failed loading berry_bush.png");
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Gfx_Image *hammer_image = load_image_from_disk(fixed_string("hammer.png"));
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assert(hammer_image, "Failed loading hammer.png");
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seed_for_random = os_get_current_cycle_count();
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const float64 fps_limit = 69000;
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const float64 min_frametime = 1.0 / fps_limit;
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Matrix4 camera_view = m4_scalar(1.0);
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float64 last_time = os_get_current_time_in_seconds();
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while (!window.should_close) {
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reset_temporary_storage();
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context.allocator = temp;
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float64 now = os_get_current_time_in_seconds();
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float64 delta = now - last_time;
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if (delta < min_frametime) {
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os_high_precision_sleep((min_frametime-delta)*1000.0);
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now = os_get_current_time_in_seconds();
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delta = now - last_time;
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}
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last_time = now;
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os_update();
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if (is_key_just_released(KEY_ESCAPE)) {
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window.should_close = true;
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}
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if (is_key_just_pressed(KEY_ARROW_LEFT)) {
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window.width += 10;
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window.x -= 10;
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}
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if (is_key_just_pressed(KEY_ARROW_RIGHT)) {
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window.width += 10;
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}
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if (is_key_just_released('Q')) {
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push_allocator(get_heap_allocator());
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delete_image(bush_image);
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bush_image = load_image_from_disk(fixed_string("berry_bush.png"));
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assert(bush_image, "Failed loading berry_bush.png");
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pop_allocator();
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}
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const float32 cam_move_speed = 4.0;
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Vector2 cam_move_axis = v2(0, 0);
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if (is_key_down('A')) {
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cam_move_axis.x -= 1.0;
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}
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if (is_key_down('D')) {
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cam_move_axis.x += 1.0;
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}
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if (is_key_down('S')) {
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cam_move_axis.y -= 1.0;
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}
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if (is_key_down('W')) {
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cam_move_axis.y += 1.0;
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}
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Vector2 cam_move = v2_mulf(cam_move_axis, delta * cam_move_speed);
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camera_view = m4_translate(camera_view, v3(v2_expand(cam_move), 0));
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draw_frame.view = camera_view;
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Matrix4 hammer_xform = m4_scalar(1.0);
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hammer_xform = m4_rotate_z(hammer_xform, (f32)now);
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hammer_xform = m4_translate(hammer_xform, v3(-.25f, -.25f, 0));
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draw_image_xform(hammer_image, hammer_xform, v2(.5f, .5f), COLOR_RED);
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Vector2 hover_position = v2_rotate_point_around_pivot(v2(-.5, -.5), v2(0, 0), (f32)now);
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Vector2 local_pivot = v2(.125f, .125f);
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draw_rect(v2_sub(hover_position, local_pivot), v2(.25f, .25f), v4((sin(now)+1.0)/2.0, 1.0, 0.0, 1.0));
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draw_image(bush_image, v2(0.65, 0.65), v2(0.2*sin(now), 0.2*sin(now)), COLOR_WHITE);
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gfx_update();
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if (is_key_just_released('E')) {
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log("FPS: %.2f", 1.0 / delta);
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log("ms: %.2f", delta*1000.0);
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}
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}
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return 0;
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}
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