diff options
Diffstat (limited to 'sim.cpp')
| -rw-r--r-- | sim.cpp | 80 |
1 files changed, 58 insertions, 22 deletions
@@ -187,6 +187,8 @@ static void platforms_render(State *state, Platform *platforms, u32 nplatforms) v2 endpoint1 = v2_add(center, platform_r); v2 endpoint2 = v2_sub(center, platform_r); + gl_rgbacolor(platform->color); + #if 1 gl->VertexAttrib2f(shader->vertex_p1, endpoint1.x, endpoint1.y); gl->VertexAttrib2f(shader->vertex_p2, endpoint2.x, endpoint2.y); @@ -346,8 +348,8 @@ void sim_frame(Frame *frame) { maybe_unused u8 *keys_pressed = input->keys_pressed; maybe_unused bool *keys_down = input->keys_down; - state->win_width = width; - state->win_height = height; + state->win_width = (float)width; + state->win_height = (float)height; state->dt = (float)frame->dt; @@ -459,25 +461,23 @@ void sim_frame(Frame *frame) { p->center = V2(-1.0f, 5.0f); p->angle = 0; p->size = 1.0f; - //p->rotate_speed = -1.0f; - platform_make_body(state, p); - ++p; - p->moves = true; - p->move_p1 = V2(2.0f, 0.5f); - p->move_p2 = V2(-2.0f, 1.5f); - p->move_speed = 1.0f; - p->angle = 0.05f; - p->size = 6.0f; + p->color = 0xFF00FFFF; platform_make_body(state, p); state->nplatforms = (u32)(p - state->platforms + 1); - } + Platform *b = &state->platform_building; + b->size = 3.0f; + b->color = 0xFF00FF7F; + } + + state->building = true; + state->initialized = true; #if DEBUG state->magic_number = MAGIC_NUMBER; #endif } - if (input->keys_pressed[KEY_ESCAPE]) { + if (keys_pressed[KEY_ESCAPE]) { frame->close = true; return; } @@ -486,25 +486,61 @@ void sim_frame(Frame *frame) { shaders_reload_if_necessary(state); #endif - maybe_unused b2World *world = state->world; + { + float half_height = 10.0f; + float half_width = half_height * state->win_width / state->win_height; + float ball_x = ball->pos.x, ball_y = ball->pos.y; + // center view around ball + state->transform = m4_ortho(ball_x - half_width, ball_x + half_width, ball_y - half_height, ball_y + half_height, -1, +1); + state->inv_transform = m4_inv(state->transform); + } + + { // calculate mouse position in Box2D coordinates + v3 mouse_gl_coords = V3( + (float)input->mouse_x / state->win_width * 2 - 1, + (1 - (float)input->mouse_y / state->win_height) * 2 - 1, + 0 + ); + + state->mouse_pos = v3_xy(m4_mul_v3(state->inv_transform, mouse_gl_coords)); + } + Font *font = &state->font; - // simulate physics - { + if (state->simulating) { + // simulate physics float dt = state->dt; if (dt > 100) dt = 100; // prevent floating-point problems for very large dt's simulate_time(state, dt); } - { - float half_height = 10.0f; - float half_width = half_height * (float)state->win_width / (float)state->win_height; - float ball_x = ball->pos.x, ball_y = ball->pos.y; - // center view around ball - state->transform = m4_ortho(ball_x - half_width, ball_x + half_width, ball_y - half_height, ball_y + half_height, -1, +1); + if (state->building) { + Platform *platform_building = &state->platform_building; + platform_building->center = state->mouse_pos; + float dt = state->dt; + float rotate_amount = 2.0f * dt; + float size_change_amount = 4.0f * dt; + // rotate platform using left/right + if (keys_down[KEY_LEFT]) + platform_building->angle += rotate_amount; + if (keys_down[KEY_RIGHT]) + platform_building->angle -= rotate_amount; + + // change size of platform using up/down + if (keys_down[KEY_UP]) + platform_building->size += size_change_amount; + if (keys_down[KEY_DOWN]) + platform_building->size -= size_change_amount; + + platform_building->size = clampf(platform_building->size, 0.3f, 10.0f); + platform_building->angle = fmodf(platform_building->angle, TAUf); } + platforms_render(state, state->platforms, state->nplatforms); + if (state->building) { + platforms_render(state, &state->platform_building, 1); + } ball_render(state); { |