terom@25: 
terom@25: #include "Graphics.hh"
saiam@86: #include "GameState.hh"
saiam@108: #include <cmath>
terom@25: 
terom@25: Graphics::Graphics (Engine &engine, GameState &state) :
terom@233:     CL_DisplayWindow(GRAPHICS_WINDOW_TITLE, GRAPHICS_RESOLUTION_WIDTH, GRAPHICS_RESOLUTION_HEIGHT),
terom@25:     engine(engine), 
terom@25:     state(state), 
terom@282:     resolution(GRAPHICS_RESOLUTION_WIDTH, GRAPHICS_RESOLUTION_HEIGHT),
terom@25:     update_timer(GRAPHICS_UPDATE_INTERVAL_MS),
terom@235:     input(get_ic()->get_keyboard()),
terom@233:     simple_font("Font2", engine.getResourceManager()) 
terom@233: {
saiam@86: 
terom@25:     // connect timer signal
terom@205:     slots.connect(update_timer.sig_tick(), this, &Graphics::on_update);
terom@25: 
terom@25:     // enable
terom@205:     update_timer.start();
terom@25: }
terom@25: 
saiam@275: void Graphics::check_input (TimeMS dt) {
terom@25:     LocalPlayer *player;
terom@221:     PlayerInput input_mask = 0;
terom@25:     
terom@233:     // update gui flags
terom@235:     this->flags = input.readGuiInput();
terom@233: 
terom@233:     // quit?
terom@233:     if (flags & GUI_INPUT_QUIT) {
saiam@108:         engine.stop();
terom@25: 
saiam@108:         return;
terom@25:     }
terom@25:      
terom@233:     // stop here if we don't have a local player
terom@25:     if ((player = state.getLocalPlayer()) == NULL)
terom@25:         return;
terom@25:     
terom@221:     // dump debug info on stderr
terom@233:     if (flags & GUI_INPUT_DEBUG_PLAYER)
terom@221:         player->printDebugInfo();
ekku@180:     
terom@230:     // build input_mask
terom@235:     input_mask = input.readPlayerInput();
terom@221:     
terom@233:     // apply input if there was any
terom@221:     if (input_mask)
saiam@275:         player->handleInput(input_mask, dt);
terom@25: }
terom@25: 
terom@266: static PixelDimension value_between (PixelDimension low, PixelDimension value, PixelDimension high) {
terom@266:     if (value < low)
terom@266:         return low;
terom@266: 
terom@266:     else if (value > high)
terom@266:         return high;
terom@266: 
terom@266:     else
terom@266:         return value;
terom@266: }
terom@266: 
terom@25: void Graphics::do_redraw (void) {
terom@233:     CL_GraphicContext *gc = get_gc();
terom@266:     LocalPlayer *player;
terom@266: 
terom@266:     // calculate camera
terom@266:     PixelCoordinate camera(0, 0);
terom@266:     
terom@266:     // ...to track our local player
terom@266:     if ((player = state.getLocalPlayer()) != NULL) {
terom@266:         PixelCoordinate target = player->getCoordinate() - resolution / 2;
terom@266:         PixelCoordinate max = state.world.getDimensions() - resolution;
terom@266:         
terom@266:         // keep the terrain in view
terom@266:         camera = PixelCoordinate(
terom@266:             value_between(0, target.x, max.x),
terom@266:             value_between(0, target.y, max.y)
terom@266:         );
terom@266:     }
terom@25:     
saiam@162:     // White background
nireco@248:     gc->clear(CL_Color::black);
terom@25: 
terom@233:     // Draw the game
terom@266:     state.draw(this, camera, flags & GUI_INPUT_DISPLAY_WEAPON);
ekku@180: 
terom@184:     // Flip window buffer, sync
terom@233:     flip(1);
terom@25: }
terom@25: 
terom@205: void Graphics::on_update (TimeMS tick_length) {
terom@25:     // check keyboard input
saiam@275:     check_input(tick_length);
terom@25: 
terom@25:     // redraw display
terom@25:     do_redraw();
terom@25: }