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Added Mario-esque camera. It is a bit hacky, since it only takes into
account the size of the camera box, instead of the camera box's location. In any case, it's a start. Refs #1.
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,56 @@ | ||
| package ca.kess.games.camera; | ||
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| import ca.kess.games.Constants; | ||
| import ca.kess.games.entities.GameEntity; | ||
| import ca.kess.games.world.WorldLevel; | ||
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| import com.badlogic.gdx.Gdx; | ||
| import com.badlogic.gdx.graphics.OrthographicCamera; | ||
| import com.badlogic.gdx.graphics.g2d.SpriteBatch; | ||
| import com.badlogic.gdx.math.Matrix4; | ||
| import com.badlogic.gdx.math.Vector2; | ||
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| public class FixedCamera extends GameCamera { | ||
| private GameEntity mGameEntity; | ||
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| public FixedCamera(OrthographicCamera camera, GameEntity entity) { | ||
| super(camera); | ||
| mGameEntity = entity; | ||
| } | ||
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| public final GameEntity getTarget() { | ||
| return mGameEntity; | ||
| } | ||
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| @Override | ||
| public void update() { | ||
| Vector2 pos = mGameEntity.getPosition(); | ||
| getCamera().position.set(pos.x, pos.y, 0); | ||
| getCamera().update(); | ||
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| } | ||
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| @Override | ||
| public void render(SpriteBatch b, WorldLevel worldLevel) { | ||
| float mx = getCamera().position.x; | ||
| float my = getCamera().position.y; | ||
| float width = Gdx.graphics.getWidth()/(8*Constants.ZOOM_FACTOR); | ||
| float height = Gdx.graphics.getWidth()/(8*Constants.ZOOM_FACTOR); | ||
| int x0 = Math.max((int) (mx - width/2), 0); | ||
| int x1 = Math.min((int) (1+mx + width/2), worldLevel.getWidth()); | ||
| int y0 = Math.max((int) (my - height/2), 0); | ||
| int y1 = Math.min((int) (my + height/2), worldLevel.getHeight()); | ||
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| worldLevel.render(b, x0, y0, x1, y1); | ||
| } | ||
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| @Override | ||
| public void onResize(int width, int height) { | ||
| getCamera().setToOrtho(false, width/(Constants.TILE_SIZE*Constants.ZOOM_FACTOR), height/(Constants.TILE_SIZE*Constants.ZOOM_FACTOR)); | ||
| } | ||
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| @Override | ||
| public Matrix4 getCombined() { | ||
| return getCamera().combined; | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,40 @@ | ||
| package ca.kess.games.camera; | ||
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| import ca.kess.games.world.WorldLevel; | ||
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| import com.badlogic.gdx.graphics.OrthographicCamera; | ||
| import com.badlogic.gdx.graphics.g2d.SpriteBatch; | ||
| import com.badlogic.gdx.math.Matrix4; | ||
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| public abstract class GameCamera { | ||
| private final OrthographicCamera mCamera; | ||
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| protected final OrthographicCamera getCamera() { | ||
| return mCamera; | ||
| } | ||
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| public GameCamera(OrthographicCamera camera) { | ||
| mCamera = camera; | ||
| } | ||
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| /** | ||
| * Do any pre-processing logic for the camera | ||
| */ | ||
| public abstract void update(); | ||
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| /** | ||
| * Get the MVP matrix for the camera | ||
| */ | ||
| public abstract Matrix4 getCombined(); | ||
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| /** | ||
| * Called when the screen is resized/reoriented. | ||
| */ | ||
| public abstract void onResize(int width, int height); | ||
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| /** | ||
| * Render pandas! | ||
| */ | ||
| public abstract void render(SpriteBatch b, WorldLevel worldLevel); | ||
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| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,5 +1,82 @@ | ||
| package ca.kess.games.camera; | ||
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| import ca.kess.games.Constants; | ||
| import ca.kess.games.entities.GameEntity; | ||
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| import com.badlogic.gdx.Gdx; | ||
| import com.badlogic.gdx.graphics.OrthographicCamera; | ||
| import com.badlogic.gdx.math.Rectangle; | ||
| import com.badlogic.gdx.math.Vector2; | ||
| import com.badlogic.gdx.math.Vector3; | ||
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| public class MarioCamera extends FixedCamera { | ||
| /** | ||
| * The area of the camera, in screen space | ||
| */ | ||
| private final Rectangle mArea; | ||
| public MarioCamera(OrthographicCamera camera, GameEntity entity, Rectangle area) { | ||
| super(camera, entity); | ||
| mArea = area; | ||
| } | ||
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| @Override | ||
| public void update() { | ||
| Vector3 cameraPos = getCamera().position; | ||
| Vector2 entityPos = getTarget().getPosition(); | ||
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| float f = Constants.ZOOM_FACTOR * Constants.TILE_SIZE; | ||
| //Transform entity position to screen space. | ||
| float cameraX = cameraPos.x; //in world space (1 = 1 tile) | ||
| float cameraY = cameraPos.y; | ||
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| //Convert to screen space. | ||
| float offsetX = (entityPos.x - cameraPos.x)*f; | ||
| float offsetY = (entityPos.y - cameraPos.y)*f; | ||
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| //Camera is always in the middle of the screen | ||
| float mx = Gdx.graphics.getWidth()/2; | ||
| float my = Gdx.graphics.getHeight()/2; | ||
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| Gdx.app.log(Constants.LOG, offsetX + " " + offsetY + " " + mx + " " + my); | ||
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| if(offsetX > mArea.width/2) { | ||
| cameraX += (offsetX - (mArea.width/2))/f; | ||
| } else if (offsetX < -mArea.width/2) { | ||
| cameraX += (offsetX + (mArea.width/2))/f; | ||
| } | ||
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| if(offsetY > mArea.height/2) { | ||
| cameraY += (offsetY - (mArea.height/2))/f; | ||
| } else if (offsetY < -mArea.height/2) { | ||
| cameraY += (offsetY + (mArea.height/2))/f; | ||
| } | ||
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| //only move the camera if the entity is outside of the area. | ||
| /* | ||
| if(targetY < mArea.y) { | ||
| targetY = mArea.y; | ||
| } else if(targetY > mArea.y + mArea.height) { | ||
| targetY = mArea.y + mArea.height; | ||
| } | ||
| if(targetX < mArea.x) { | ||
| targetX = mArea.x; | ||
| } else if(targetX > mArea.x + mArea.width) { | ||
| targetX = mArea.x + mArea.width; | ||
| }*/ | ||
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| getCamera().position.set(cameraX, cameraY, 0); | ||
| //getCamera().position.set(offsetX, offsetY, 0); | ||
| //getCamera().position.set(entityPos.x, entityPos.y, 0); | ||
| getCamera().update(); | ||
| } | ||
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| @Override | ||
| public void onResize(int width, int height) { | ||
| super.onResize(width, height); | ||
| } | ||
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| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1 @@ | ||
| A simple 2D platformer! |
Really we should bake these into some texture instead, and just pick which larger textures to render. I think that would be a lot faster.