From e06ab2415b39fdffe3cc86939b45a464ad4dc541 Mon Sep 17 00:00:00 2001
From: Luke Bratch <l_bratch@yahoo.co.uk>
Date: Fri, 3 Dec 2010 14:36:52 +0000
Subject: Level: Make the camera nicer

---
 Level.cpp | 21 +++++++++++++--------
 1 file changed, 13 insertions(+), 8 deletions(-)

(limited to 'Level.cpp')

diff --git a/Level.cpp b/Level.cpp
index 11cb3d4..b67ed2c 100644
--- a/Level.cpp
+++ b/Level.cpp
@@ -71,7 +71,7 @@ void Level::move() {
         }
     }
 
-    if (rect.x >= 0 && rect.x <= SCREEN_WIDTH - rect.w - 32)
+    if (rect.x >= 0)
         player.setX(rect.x);
 
     // Player y-axis movement
@@ -107,18 +107,23 @@ void Level::draw(Screen *screen) {
     // Blit background
     screen->blit(0, 0, background);
 
-    screen->blit(player.getX(), player.getY(), player.image, player.getClip());
-
-    // Scroll level
-    if (player.getX() < -player.getXVel() || player.getX() >= SCREEN_WIDTH
-        - player.getClip()->w - 32 - MOVE_AMOUNT)
-        if (player.getXVel() < 0 || player.getXVel() > 0)
+    // If player is in the middle of the screen ...
+    if (player.getX() + cameraX > SCREEN_WIDTH / 2 - player.getClip()->w / 2 + player.getXVel()
+        && player.getX() + cameraX < SCREEN_WIDTH / 2 + player.getClip()->w / 2 + player.getXVel()) {
+        // ... and is either moving left, or moving right but not past the end of the map ...
+        if (player.getXVel() < 0 || (player.getXVel() > 0 && -cameraX + SCREEN_WIDTH < MAP_X * TILE_SIZE)) {
+            // ... then scroll the level
             cameraX -= player.getXVel();
+        }
+    }
 
     // Don't let the camera move to before the start of the level
     if (cameraX > 0)
         cameraX = 0;
 
+    // Blit player
+    screen->blit(player.getX() + cameraX, player.getY(), player.image, player.getClip());
+
     // Draw each platform...
     for (int i = 0; i < numPlatforms; i++) {
         // ...if it is visible
@@ -176,7 +181,7 @@ bool Level::checkCollision(SDL_Rect r) {
     // Loop through each platform
     for (int i = 0; i < numPlatforms; i++) {
         // Check for collisions in the x-axis ...
-        if (r.x - cameraX > platform[i].getX() - r.w && r.x - cameraX < platform[i].getX() + TILE_SIZE)
+        if (r.x > platform[i].getX() - r.w && r.x < platform[i].getX() + TILE_SIZE)
             // ... if found, check for collisions in the y-axis
             if (r.y > platform[i].getY() - r.h && r.y < platform[i].getY() + TILE_SIZE)
                 return true;
-- 
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