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#include <glib.h></glib.h>
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#include <gtk gtk.h=""></gtk>
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#include <gdk gdk.h=""></gdk>
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#include "private.h"
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#include "world.h"
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static GtkWidget *window;
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static int started;
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static int stopped;
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static unsigned long long frameCount;
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static gint64 startTime;
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static gint64 currentTime;
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static Callback initCallback;
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static Callback drawCallback;
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static cairo_surface_t *cairoSurface;
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static int width = 400;
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static int height = 400;
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static double frameRate = 30;
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static int cameraEnabled;
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static double cameraX;
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static double cameraY;
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static double cameraZoom = 1;
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static HeliArray keysPressed;
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static HeliArray keysPressedInFrame;
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static HeliArray keysReleasedInFrame;
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static HeliArray buttonsPressed;
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static HeliArray buttonsPressedInFrame;
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static HeliArray buttonsReleasedInFrame;
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static int mouseMovedInFrame;
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static double _mouseX;
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static double _mouseY;
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static char* buttonNames[] = {
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"left",
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"middle",
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"right" };
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static int buttonsCount = (int)(sizeof(buttonNames)/sizeof(*buttonNames));
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int keyDown(const char *code)
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{ return heliStringmapGet(&keysPressed, code) != NULL; }
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int keyWentDown(const char *code)
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{ return heliStringmapGet(&keysPressedInFrame, code) != NULL; }
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int keyWentUp(const char *code)
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{ return heliStringmapGet(&keysReleasedInFrame, code) != NULL; }
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int mouseDidMove()
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{ return mouseMovedInFrame; }
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int mouseDown(const char *code)
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{ return heliStringmapGet(&buttonsPressed, code) != NULL; }
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int mouseWentDown(const char *code)
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{ return heliStringmapGet(&buttonsPressedInFrame, code) != NULL; }
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int mouseWentUp(const char *code)
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{ return heliStringmapGet(&buttonsReleasedInFrame, code) != NULL; }
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double mouseX()
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{ return _mouseX; }
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double mouseY()
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{ return _mouseY; }
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int mousePressedOver(Sprite sprite)
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{ return buttonsPressed.count && mouseIsOver(sprite); }
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static void resize(int w, int h) {
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width = w > 200 ? w : 100;
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height = h > 200 ? h : 200;
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if (started) {
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gtk_window_set_default_size(GTK_WINDOW(window), width, height);
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gtk_widget_set_size_request(window, width, height);
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}
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}
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int worldGetWidth()
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{ return width; }
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void worldSetWidth(int w)
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{ resize(w, height); }
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int worldGetHeight()
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{ return height; }
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void worldSetHeight(int h)
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{ resize(width, h); }
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double worldGetFrameRate()
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{ return frameRate; }
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void worldSetFrameRate(double frameRate) {
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if (!(frameRate > 1)) frameRate = 1;
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if (!(frameRate < 100)) frameRate = 100;
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}
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double worldGetTimeStep()
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{ return 1/frameRate; }
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int worldGetFrameCount()
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{ return (int)frameCount; }
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double worldGetSeconds()
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{ return started ? (currentTime - startTime)*HELI_PRECISION : 0.0; }
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void worldSetInit(Callback init)
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{ initCallback = init; }
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void worldSetDraw(Callback draw)
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{ drawCallback = draw; }
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void worldStop()
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{ if (started) stopped = TRUE; }
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void cameraOn()
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{ cameraEnabled = TRUE; }
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void cameraOff()
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{ cameraEnabled = FALSE; }
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int cameraIsActive()
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{ return cameraEnabled; }
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double cameraMouseX()
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{ return _mouseX/cameraZoom + cameraX; }
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double cameraMouseY()
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{ return _mouseY/cameraZoom + cameraY; }
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double cameraGetX()
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{ return cameraX; }
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void cameraSetX(double x)
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{ cameraX = x; }
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double cameraGetY()
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{ return cameraY; }
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void cameraSetY(double y)
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{ cameraY = y; }
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double cameraGetZoom()
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{ return cameraZoom; }
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void cameraSetZoom(double x)
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{ cameraZoom = x > HELI_PRECISION ? x : HELI_PRECISION; }
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static gboolean idle(gpointer data G_GNUC_UNUSED) {
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if (stopped) {
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if (window) {
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gtk_window_close(GTK_WINDOW(window));
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window = NULL;
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}
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return FALSE;
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}
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gtk_widget_queue_draw(window);
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return TRUE;
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}
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static gboolean draw(GtkWidget *widget G_GNUC_UNUSED, cairo_t *cr, gpointer data G_GNUC_UNUSED) {
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int doFrame = FALSE;
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if ( cairoSurface
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&& cairo_image_surface_get_width(cairoSurface) != width
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&& cairo_image_surface_get_height(cairoSurface) != height )
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{ cairo_surface_destroy(cairoSurface); cairoSurface = NULL; }
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if (!cairoSurface) {
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cairoSurface = cairo_image_surface_create(CAIRO_FORMAT_ARGB32, width, height);
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doFrame = TRUE;
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}
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if (frameCount == 0) {
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currentTime = startTime = g_get_monotonic_time();
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doFrame = TRUE;
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}
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double dt = 1/frameRate;
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gint64 timeStep = (gint64)round(dt*1e6);
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gint64 newTime = g_get_monotonic_time();
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if (currentTime < newTime)
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doFrame = TRUE;
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if (doFrame) {
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if (frameCount == 0) heliDoTests();
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heliCairo = cairo_create(cairoSurface);
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heliDrawingPrepareFrame();
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if (drawCallback) drawCallback();
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cairo_surface_flush(cairoSurface);
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cairo_destroy(heliCairo);
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heliCairo = NULL;
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currentTime += timeStep;
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++frameCount;
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heliSpriteUpdate(dt);
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heliSoundUpdate();
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heliArrayClear(&keysPressedInFrame);
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heliArrayClear(&keysReleasedInFrame);
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heliArrayClear(&buttonsPressedInFrame);
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heliArrayClear(&buttonsReleasedInFrame);
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if (stopped) g_idle_add_full(G_PRIORITY_DEFAULT, idle, NULL, NULL);
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}
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gint64 delta = newTime - currentTime - 2000000;
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if (delta > 0) {
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startTime += delta;
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currentTime += delta;
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}
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heliDrawingClearFrame(cr);
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cairo_save(cr);
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cairo_set_source_surface(cr, cairoSurface, 0, 0);
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cairo_paint(cr);
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cairo_restore(cr);
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if (!stopped) gtk_widget_queue_draw(window);
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delta = currentTime - g_get_monotonic_time();
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if (delta > 100) g_usleep(delta - 100);
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return TRUE;
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}
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static gboolean handleEvent(GtkWidget *widget G_GNUC_UNUSED, GdkEvent *event, gpointer data G_GNUC_UNUSED) {
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gchar *keyname;
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int button;
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switch(event->type) {
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case GDK_KEY_PRESS:
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keyname = heliStringCopy( gdk_keyval_name(event->key.keyval) );
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heliLowercase(keyname);
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heliStringmapAdd(&keysPressed, keyname, NULL, NULL);
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heliStringmapAdd(&keysPressedInFrame, keyname, NULL, NULL);
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free(keyname);
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return TRUE;
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case GDK_KEY_RELEASE:
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keyname = heliStringCopy( gdk_keyval_name(event->key.keyval) );
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heliLowercase(keyname);
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heliStringmapRemove(&keysPressed, keyname);
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heliStringmapAdd(&keysReleasedInFrame, keyname, NULL, NULL);
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free(keyname);
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return TRUE;
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case GDK_BUTTON_PRESS:
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button = event->button.button;
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if (button >= 1 && button <= buttonsCount) {
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heliStringmapAdd(&buttonsPressed, buttonNames[button - 1], NULL, NULL);
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heliStringmapAdd(&buttonsPressedInFrame, buttonNames[button - 1], NULL, NULL);
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}
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_mouseX = event->button.x;
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_mouseY = event->button.y;
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return TRUE;
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case GDK_BUTTON_RELEASE:
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button = event->button.button;
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if (button >= 1 && button <= buttonsCount) {
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heliStringmapRemove(&buttonsPressed, buttonNames[button - 1]);
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heliStringmapAdd(&buttonsReleasedInFrame, buttonNames[button - 1], NULL, NULL);
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}
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_mouseX = event->button.x;
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_mouseY = event->button.y;
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return TRUE;
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case GDK_MOTION_NOTIFY:
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_mouseX = event->motion.x;
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_mouseY = event->motion.y;
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return TRUE;
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case GDK_DELETE:
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stopped = TRUE;
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window = NULL;
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break;
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default:
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break;
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}
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return FALSE;
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}
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static void activate(GtkApplication* app, gpointer data G_GNUC_UNUSED) {
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window = gtk_application_window_new(app);
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g_signal_connect(window, "draw", G_CALLBACK(draw), NULL);
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g_signal_connect(window, "event", G_CALLBACK(handleEvent), NULL);
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gtk_window_set_resizable(GTK_WINDOW(window), FALSE);
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gtk_window_set_default_size(GTK_WINDOW(window), width, height);
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gtk_widget_add_events( window,
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GDK_POINTER_MOTION_MASK
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| GDK_BUTTON_PRESS_MASK
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| GDK_BUTTON_RELEASE_MASK
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| GDK_KEY_PRESS_MASK
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| GDK_KEY_RELEASE_MASK );
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gtk_widget_set_size_request(window, width, height);
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gtk_widget_show(window);
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currentTime = startTime = 0;
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if (initCallback) initCallback();
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g_idle_add(idle, NULL);
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}
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void worldRun() {
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if (started) return;
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started = TRUE;
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stopped = FALSE;
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frameCount = 0;
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srand(time(NULL));
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GtkApplication *application = gtk_application_new(NULL, 0);
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g_signal_connect(application, "activate", G_CALLBACK(activate), NULL);
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g_application_run(G_APPLICATION(application), 0, NULL);
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g_object_unref(application);
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heliSpriteFinish();
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heliDrawingFinish();
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heliAnimationFinish();
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heliSoundFinish();
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if (cairoSurface) cairo_surface_destroy(cairoSurface);
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cairoSurface = NULL;
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heliArrayDestroy(&keysPressed);
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heliArrayDestroy(&keysPressed);
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heliArrayDestroy(&keysPressedInFrame);
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heliArrayDestroy(&keysReleasedInFrame);
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heliArrayDestroy(&buttonsPressed);
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heliArrayDestroy(&buttonsPressedInFrame);
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heliArrayDestroy(&buttonsReleasedInFrame);
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started = FALSE;
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}
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