From dca59a1241512fd596537ac63e092e1c657fd401 Mon Sep 17 00:00:00 2001 From: doyle Date: Sun, 15 Oct 2023 22:48:53 +1100 Subject: [PATCH] fp: Various camera fixes for varying window sizes --- External/tely | 2 +- feely_pona.cpp | 56 ++++++++++++++++++++++++++++----------------- feely_pona_game.cpp | 32 ++++++++++++++++++-------- feely_pona_game.h | 1 + 4 files changed, 59 insertions(+), 32 deletions(-) diff --git a/External/tely b/External/tely index 9ec8c29..2984374 160000 --- a/External/tely +++ b/External/tely @@ -1 +1 @@ -Subproject commit 9ec8c2953c3726276c44d7ab58dba3a938da6f97 +Subproject commit 29843741bf51c8ed38af467cff8b781a912f15a7 diff --git a/feely_pona.cpp b/feely_pona.cpp index ff11692..af84b43 100644 --- a/feely_pona.cpp +++ b/feely_pona.cpp @@ -473,8 +473,9 @@ static void FP_PlayReset(FP_Game *game, TELY_Platform *platform) play->tile_size = 37; // NOTE: Camera ================================================================================ - play->camera.world_pos = base_mid_p - Dqn_V2_InitV2I(platform->core.window_size * .5f); - play->camera.scale = Dqn_V2_InitNx1(1); + play->camera.world_pos = base_mid_p - Dqn_V2_InitV2I(platform->core.window_size * .5f); + play->camera.scale = Dqn_V2_InitNx1(1); + play->camera.size = Dqn_V2_InitNx2(1826, 1046); } #if defined(DQN_OS_WIN32) @@ -1444,6 +1445,7 @@ void FP_Update(TELY_Platform *platform, FP_Game *game, TELY_PlatformInput *input { Dqn_Profiler_ZoneScopeWithIndex("FP_Update", FP_ProfileZone_FPUpdate); + FP_GameCameraM2x3 const camera_xforms = FP_Game_CameraModelViewM2x3(game->play.camera); game->play.update_counter++; game->play.clock_ms = DQN_CAST(uint64_t)(platform->input.timer_s * 1000.f); Dqn_ProfilerZone update_zone = Dqn_Profiler_BeginZoneWithIndex(DQN_STRING8("FP_Update: Entity loop"), FP_ProfileZone_FPUpdate_EntityLoop); @@ -1991,9 +1993,10 @@ void FP_Update(TELY_Platform *platform, FP_Game *game, TELY_PlatformInput *input // NOTE: Move entity by mouse ============================================================== if (game->play.active_entity == entity->handle && entity->flags & FP_GameEntityFlag_MoveByMouse) { + Dqn_V2 mouse_p_delta = input->mouse_p_delta * (Dqn_V2_One / game->play.camera.scale); entity->velocity = {}; acceleration_meters_per_s = {}; - entity->local_pos += input->mouse_p_delta; + entity->local_pos += mouse_p_delta; } if (game->play.clicked_entity == entity->handle) { @@ -2002,11 +2005,13 @@ void FP_Update(TELY_Platform *platform, FP_Game *game, TELY_PlatformInput *input game->play.in_game_menu = DQN_CAST(FP_GameInGameMenu)(DQN_CAST(uint32_t)game->play.in_game_menu ^ FP_GameInGameMenu_Build); } - if (entity->flags & FP_GameEntityFlag_CameraTracking) - game->play.camera.world_pos = FP_Game_CalcEntityWorldPos(game, entity->handle) - Dqn_V2_InitV2I(platform->core.window_size) * .5f; + if (entity->flags & FP_GameEntityFlag_CameraTracking) { + FP_GameCamera *camera = &game->play.camera; + camera->world_pos = FP_Game_CalcEntityWorldPos(game, entity->handle) * camera->scale; + } FP_GamePlaceableBuilding placeable_building = PLACEABLE_BUILDINGS[game->play.build_mode_building_index]; - game->play.build_mode_can_place_building = false; + game->play.build_mode_can_place_building = false; uint8_t *inventory_count = nullptr; if (placeable_building.type == FP_EntityType_ChurchTerry) @@ -2160,7 +2165,7 @@ void FP_Update(TELY_Platform *platform, FP_Game *game, TELY_PlatformInput *input } // NOTE: Mob spawner ======================================================================= - if (entity->type == FP_EntityType_MobSpawner) { + if (entity->type == FP_EntityType_MobSpawner && 0) { // NOTE: Flush any spawn entities that are dead for (FP_SentinelListLink *link = nullptr; FP_SentinelList_Iterate(&entity->spawn_list, &link); ) { FP_GameEntity *spawned_entity = FP_Game_GetEntity(game, link->data); @@ -2298,14 +2303,21 @@ void FP_Update(TELY_Platform *platform, FP_Game *game, TELY_PlatformInput *input } if (!FP_Game_IsNilEntityHandle(game, game->play.clicked_entity)) { - Dqn_V2 target_camera_size = Dqn_V2_InitNx2(1826, 1046); - Dqn_V2 window_size = Dqn_V2_InitV2I(platform->core.window_size); - FP_GamePlay *play = &game->play; - play->camera.scale = window_size / target_camera_size; - play->camera.world_pos.x = DQN_MIN(play->camera.world_pos.x, play->map->local_hit_box_size.w * +0.5f - target_camera_size.w); - play->camera.world_pos.x = DQN_MAX(play->camera.world_pos.x, play->map->local_hit_box_size.w * -0.5f); - play->camera.world_pos.y = DQN_MAX(play->camera.world_pos.y, play->map->local_hit_box_size.h * -0.5f); - play->camera.world_pos.y = DQN_MIN(play->camera.world_pos.y, play->map->local_hit_box_size.h * +0.5f - target_camera_size.h); + Dqn_V2 window_size = Dqn_V2_InitV2I(platform->core.window_size); + FP_GamePlay *play = &game->play; + + FP_GameCamera *camera = &play->camera; + camera->scale = window_size / camera->size; + Dqn_V2 camera_size_screen = camera->size * camera->scale; + + Dqn_V2 map_world_size = play->map->local_hit_box_size; + Dqn_V2 map_screen_size = map_world_size * camera->scale; + Dqn_V2 half_map_screen_size = map_screen_size * .5f; + + camera->world_pos.x = DQN_MIN(camera->world_pos.x, half_map_screen_size.w - (camera_size_screen.w * .5f)); + camera->world_pos.x = DQN_MAX(camera->world_pos.x, -half_map_screen_size.w + (camera_size_screen.w * .5f)); + camera->world_pos.y = DQN_MAX(camera->world_pos.y, -half_map_screen_size.h + (camera_size_screen.h * .5f)); + camera->world_pos.y = DQN_MIN(camera->world_pos.y, half_map_screen_size.h - (camera_size_screen.h * .5f)); } Dqn_Profiler_EndZone(update_zone); @@ -2325,9 +2337,9 @@ void FP_Render(FP_Game *game, TELY_Platform *platform, TELY_Renderer *renderer, TELY_RFui_PushFont(rfui, game->jetbrains_mono_font); TELY_RFui_PushLabelColourV4(rfui, TELY_COLOUR_BLACK_MIDNIGHT_V4); - Dqn_M2x3 model_view = FP_Game_CameraModelViewM2x3(game->play.camera, platform); - TELY_Render_PushTransform(renderer, model_view); - Dqn_V2 world_mouse_p = input->mouse_p + game->play.camera.world_pos; + FP_GameCameraM2x3 camera_xforms = FP_Game_CameraModelViewM2x3(game->play.camera); + TELY_Render_PushTransform(renderer, camera_xforms.model_view); + Dqn_V2 world_mouse_p = Dqn_M2x3_MulV2(camera_xforms.view_model, input->mouse_p); // NOTE: Draw tiles ============================================================================ Dqn_usize tile_count_x = DQN_CAST(Dqn_usize)(platform->core.window_size.w / game->play.tile_size); @@ -3446,8 +3458,8 @@ void FP_Render(FP_Game *game, TELY_Platform *platform, TELY_Renderer *renderer, } - next_y += TELY_Asset_GetFont(assets, TELY_RFui_ActiveFont(rfui))->pixel_height; - { + if (0) { + next_y += TELY_Asset_GetFont(assets, TELY_RFui_ActiveFont(rfui))->pixel_height; TELY_RFuiResult bar = TELY_RFui_Column(rfui, DQN_STRING8("Memory bar")); bar.widget->semantic_position[TELY_RFuiAxis_X].kind = TELY_RFuiPositionKind_Absolute; bar.widget->semantic_position[TELY_RFuiAxis_X].value = 10.f; @@ -3498,6 +3510,7 @@ void FP_Render(FP_Game *game, TELY_Platform *platform, TELY_Renderer *renderer, DQN_DEFER { TELY_RFui_PopParent(rfui); }; TELY_RFui_TextF(rfui, "Camera: %.1f, %.1f", game->play.camera.world_pos.x, game->play.camera.world_pos.y); + TELY_RFui_TextF(rfui, "Mouse: %.1f, %.1f", input->mouse_p.x, input->mouse_p.y); // TODO(doyle): On emscripten we need to use Dqn_OS_PerfCounterNow() however those // require OS functions which need to be exposed into the platform layer. @@ -3656,7 +3669,8 @@ void TELY_DLL_FrameUpdate(void *user_data) if (game->play.prev_active_entity.id) game->play.active_entity = game->play.prev_active_entity; } else { - Dqn_V2 world_mouse_p = input->mouse_p + game->play.camera.world_pos; + FP_GameCameraM2x3 const camera_xforms = FP_Game_CameraModelViewM2x3(game->play.camera); + Dqn_V2 world_mouse_p = Dqn_M2x3_MulV2(camera_xforms.view_model, input->mouse_p); for (FP_GameEntityIterator it = {}; FP_Game_DFSPreOrderWalkEntityTree(game, &it, game->play.root_entity); ) { FP_GameEntity *entity = it.entity; if (entity->local_hit_box_size.x <= 0 || entity->local_hit_box_size.y <= 0) diff --git a/feely_pona_game.cpp b/feely_pona_game.cpp index b67e235..8f076c9 100644 --- a/feely_pona_game.cpp +++ b/feely_pona_game.cpp @@ -30,17 +30,29 @@ struct FP_GameCameraM2x3 Dqn_M2x3 view_model; }; -static Dqn_M2x3 FP_Game_CameraModelViewM2x3(FP_GameCamera camera, TELY_Platform *platform) +static FP_GameCameraM2x3 FP_Game_CameraModelViewM2x3(FP_GameCamera camera) { - Dqn_M2x3 result = Dqn_M2x3_Identity(); - if (platform) { - Dqn_V2 center_offset = Dqn_V2_InitV2I(platform->core.window_size) * .5f; - Dqn_V2 rotate_origin = -camera.world_pos - center_offset; - result = Dqn_M2x3_Mul(result, Dqn_M2x3_Translate(rotate_origin)); - result = Dqn_M2x3_Mul(result, Dqn_M2x3_Rotate(camera.rotate_rads)); - result = Dqn_M2x3_Mul(result, Dqn_M2x3_Scale(camera.scale)); - result = Dqn_M2x3_Mul(result, Dqn_M2x3_Translate(center_offset)); - } + FP_GameCameraM2x3 result = {}; + result.model_view = Dqn_M2x3_Identity(); + result.view_model = Dqn_M2x3_Identity(); + + Dqn_V2 center_offset = camera.size * .5f; + Dqn_V2 rotate_origin = -camera.world_pos; + result.model_view = Dqn_M2x3_Mul(result.model_view, Dqn_M2x3_Translate(rotate_origin)); + result.model_view = Dqn_M2x3_Mul(result.model_view, Dqn_M2x3_Rotate(camera.rotate_rads)); + result.model_view = Dqn_M2x3_Mul(result.model_view, Dqn_M2x3_Scale(camera.scale)); + result.model_view = Dqn_M2x3_Mul(result.model_view, Dqn_M2x3_Translate(center_offset)); + + Dqn_V2 inverse_scale = Dqn_V2_InitNx1(1) / camera.scale; + result.view_model = Dqn_M2x3_Mul(result.view_model, Dqn_M2x3_Translate(-center_offset)); + result.view_model = Dqn_M2x3_Mul(result.view_model, Dqn_M2x3_Scale(inverse_scale)); + result.view_model = Dqn_M2x3_Mul(result.view_model, Dqn_M2x3_Rotate(-camera.rotate_rads)); + result.view_model = Dqn_M2x3_Mul(result.view_model, Dqn_M2x3_Translate(-rotate_origin)); + + #if 0 + Dqn_M2x3 identity = Dqn_M2x3_Mul(result.model_view, result.view_model); + DQN_ASSERT(identity == Dqn_M2x3_Identity()); + #endif return result; } diff --git a/feely_pona_game.h b/feely_pona_game.h index 9053fe7..e3d7017 100644 --- a/feely_pona_game.h +++ b/feely_pona_game.h @@ -255,6 +255,7 @@ struct FP_GameEntityIterator struct FP_GameCamera { + Dqn_V2 size; Dqn_V2 world_pos; Dqn_f32 rotate_rads; Dqn_V2 scale;