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→Collision Detection
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== Collision Detection ==
== Collision Detection ==
+Description: Shows how to test for collision between various objects, does not contain an example for node based collision detection (yet).
+
+<source lang="cpp">#include <stdio.h>
+#include <stdlib.h>
+#include <gccore.h>
+#include <wiiuse/wpad.h>
+#include <fat.h>
+
+#include <wiisprite.h>
+using namespace wsp;
+
+GameWindow gwd; // Initializes and renders our scene.
+
+Sprite sprite; // The drawable object we can modify.
+Sprite sprite2; // another sprite to check collision against.
+
+Image image; // Holds our image/texture from the SD Card.
+Image image2; // hold the other image/tecture from SD card.
+
+Rectangle rect; // rectangle object as an example.
+Quad quad; //quad object for rect.
+
+struct player {
+ u32 xpos, ypos
+} Player;
+
+void checkCollision(u32 oldX, u32 oldY);
+
+int main(int argc, char **argv) {
+ fatInitDefault();
+
+ gwd.InitVideo();
+
+ LayerManager manager(3);
+
+ if(image.LoadImage("libwiisprite.png") != IMG_LOAD_ERROR_NONE)exit(0);
+ if(image.LoadImage("libwiisprite2.png") != IMG_LOAD_ERROR_NONE)exit(0);
+ sprite.SetImage(&image);
+ sprite.SetPosition(Player.xpos, Player.ypos);
+ sprite2.SetImage(&image2);
+ sprite2.SetPosition(200,200);
+ manager.Append(&sprite);
+ manager.Append(&Rectangle);
+ rect.width = 20; rect.height = 20;
+ rect.x = 50; rect.y = 50;
+ quad.SetRectangle(&rect);
+
+ WPAD_Init();
+ WPAD_SetDataFormat(WPAD_CHAN_0, WPAD_FMT_BTNS_ACC_IR);
+
+ while(1) {
+ u32 oldX = Player.xpos, oldY = Player.ypos;
+ WPAD_ScanPads();
+ u32 pressed = WPAD_ButtonsHeld(WPAD_CHAN_0);
+ if(pressed & WPAD_BUTTON_UP)
+ Player.ypos -= 1;
+ if(pressed & WPAD_BUTTON_DOWN)
+ Player.ypos += 1;
+ if(pressed & WPAD_BUTTON_LEFT)
+ Player.xpos -= 1;
+ if(pressed & WPAD_BUTTON_RIGHT)
+ Player.xpos += 1;
+ sprite.SetPosition(Player.xpos, Player.ypos);
+ checkCollision();
+ sprite.SetPosition(Player.xpos, Player.ypos);
+ manager.Draw(0, 0);
+ gwd.Flush();
+ }
+
+ manager.Draw(0, 0);
+ gwd.Flush();
+ return 0;
+}
+
+void checkCollision(u32 oldX, u32 oldY)
+{
+ if (sprite.CollidesWith(&sprite2)) {
+ Player.x = oldX;
+ Player.y = oldY;
+ }
+ if (sprite.CollidesWith(&quad)) {
+ Player.x = oldX;
+ Player.y = oldY;
+ }
+
+}</source>
== EXAMPLE PROGRAMS ==
== EXAMPLE PROGRAMS ==