From: Christoph Sommer <mail@christoph-sommer.de>
Date: Sun, 25 Jun 2006 13:32:44 +0000 (+0000)
Subject: Switched y coordinate of Physics class to be like all other y coordinates in SuperTux:
X-Git-Url: https://git.verplant.org/?a=commitdiff_plain;h=36afad72b6c66d4619372892f589a4131afed638;p=supertux.git

Switched y coordinate of Physics class to be like all other y coordinates in SuperTux:
positive y is down

SVN-Revision: 3741
---

diff --git a/src/badguy/angrystone.cpp b/src/badguy/angrystone.cpp
index 906112d5c..010230c19 100644
--- a/src/badguy/angrystone.cpp
+++ b/src/badguy/angrystone.cpp
@@ -107,10 +107,10 @@ AngryStone::active_update(float elapsed_time) {
     if ((dx > -playerWidth) && (dx < badguyWidth)) {
       if (dy > 0) {
         attackDirection.x = 0;
-        attackDirection.y = -1;
+        attackDirection.y = 1;
       } else {
         attackDirection.x = 0;
-        attackDirection.y = 1;
+        attackDirection.y = -1;
       }
       if ((attackDirection.x != oldWallDirection.x) || (attackDirection.y != oldWallDirection.y)) {
         sprite->set_action("charging");
diff --git a/src/badguy/bouncing_snowball.cpp b/src/badguy/bouncing_snowball.cpp
index 76df35af0..5601bfb12 100644
--- a/src/badguy/bouncing_snowball.cpp
+++ b/src/badguy/bouncing_snowball.cpp
@@ -21,7 +21,7 @@
 
 #include "bouncing_snowball.hpp"
 
-static const float JUMPSPEED = 450;
+static const float JUMPSPEED = -450;
 static const float WALKSPEED = 80;
 
 BouncingSnowball::BouncingSnowball(const lisp::Lisp& reader)
diff --git a/src/badguy/fish.cpp b/src/badguy/fish.cpp
index 850d0a6f2..4c6817a44 100644
--- a/src/badguy/fish.cpp
+++ b/src/badguy/fish.cpp
@@ -24,7 +24,7 @@
 #include "object/tilemap.hpp"
 #include "log.hpp"
 
-static const float FISH_JUMP_POWER = 600;
+static const float FISH_JUMP_POWER = -600;
 static const float FISH_WAIT_TIME = 1;
 
 Fish::Fish(const lisp::Lisp& reader)
@@ -84,7 +84,7 @@ Fish::hit(const CollisionHit& chit)
 void
 Fish::collision_tile(uint32_t tile_attributes)
 {
-  if ((tile_attributes & Tile::WATER) && (physic.get_velocity_y() <= 0)) {
+  if ((tile_attributes & Tile::WATER) && (physic.get_velocity_y() >= 0)) {
 
     // initialize stop position if uninitialized
     if (stop_y == 0) stop_y = get_pos().y + get_bbox().get_height();
@@ -109,7 +109,7 @@ Fish::active_update(float elapsed_time)
   }
   
   // set sprite
-  sprite->set_action(physic.get_velocity_y() > 0 ? "normal" : "down");
+  sprite->set_action(physic.get_velocity_y() < 0 ? "normal" : "down");
   
   // we can't afford flying out of the tilemap, 'cause the engine would remove us.
   if ((get_pos().y - 31.8) < 0) // too high, let us fall
diff --git a/src/badguy/flyingsnowball.cpp b/src/badguy/flyingsnowball.cpp
index 4c3acdbe4..59b10f321 100644
--- a/src/badguy/flyingsnowball.cpp
+++ b/src/badguy/flyingsnowball.cpp
@@ -26,7 +26,7 @@
 #include "object/sprite_particle.hpp"
 
 static const float FLYTIME = 1.0;
-static const float FLYSPEED = 100.0;
+static const float FLYSPEED = -100.0;
 
 namespace {
   const float PUFF_PROBABILITY = 0.1; /**< chanche of puffs being spawned in the current cycle */
diff --git a/src/badguy/jumpy.cpp b/src/badguy/jumpy.cpp
index d6e71fea8..02ceeb1bb 100644
--- a/src/badguy/jumpy.cpp
+++ b/src/badguy/jumpy.cpp
@@ -21,7 +21,7 @@
 
 #include "jumpy.hpp"
 
-static const float JUMPSPEED=600;
+static const float JUMPSPEED=-600;
 static const float JUMPY_MID_TOLERANCE=4;
 static const float JUMPY_LOW_TOLERANCE=2;
 
diff --git a/src/badguy/kugelblitz.cpp b/src/badguy/kugelblitz.cpp
index 697678dd0..f8ecf1703 100644
--- a/src/badguy/kugelblitz.cpp
+++ b/src/badguy/kugelblitz.cpp
@@ -54,7 +54,7 @@ Kugelblitz::write(lisp::Writer& writer)
 void
 Kugelblitz::activate()
 {
-  physic.set_velocity_y(-300);
+  physic.set_velocity_y(300);
   physic.set_velocity_x(-20); //fall a little to the left
   direction = 1;
   dying = false;
diff --git a/src/badguy/nolok_01.cpp b/src/badguy/nolok_01.cpp
index f03a31fb6..b1e7c777d 100644
--- a/src/badguy/nolok_01.cpp
+++ b/src/badguy/nolok_01.cpp
@@ -74,7 +74,7 @@ Nolok_01::active_update(float elapsed_time)
        case WALKING:
         {
          sprite->set_action("jump");
-         physic.set_velocity_y(700);
+         physic.set_velocity_y(-700);
          action = JUMPING;
          action_timer.start(JUMP_TIME);
          break;
diff --git a/src/badguy/skullyhop.cpp b/src/badguy/skullyhop.cpp
index 9282d29ea..fb12d7519 100644
--- a/src/badguy/skullyhop.cpp
+++ b/src/badguy/skullyhop.cpp
@@ -23,7 +23,7 @@
 #include "random_generator.hpp"
 
 namespace {
-  const float VERTICAL_SPEED = 450;   /**< y-speed when jumping */
+  const float VERTICAL_SPEED = -450;   /**< y-speed when jumping */
   const float HORIZONTAL_SPEED = 220; /**< x-speed when jumping */
   const float MIN_RECOVER_TIME = 0.1; /**< minimum time to stand still before starting a (new) jump */
   const float MAX_RECOVER_TIME = 1.0; /**< maximum time to stand still before starting a (new) jump */
@@ -99,12 +99,12 @@ SkullyHop::collision_solid(GameObject& , const CollisionHit& hit)
   if(state != JUMPING) return CONTINUE;
 
   // check if we hit the floor while falling
-  if ((hit.normal.y < 0) && (physic.get_velocity_y() < 0)) {
+  if ((hit.normal.y < 0) && (physic.get_velocity_y() > 0)) {
     set_state(STANDING);
   }
 
   // check if we hit the roof while climbing
-  if ((hit.normal.y > 0) && (physic.get_velocity_y() > 0)) { 
+  if ((hit.normal.y > 0) && (physic.get_velocity_y() < 0)) { 
     physic.set_velocity_y(0);
   }
 
diff --git a/src/badguy/snail.cpp b/src/badguy/snail.cpp
index 39664feab..c2da55673 100644
--- a/src/badguy/snail.cpp
+++ b/src/badguy/snail.cpp
@@ -26,7 +26,7 @@ namespace {
   const float WALKSPEED = 80;
   const float KICKSPEED = 500;
   const int MAXSQUISHES = 10;
-  const float KICKSPEED_Y = 500; /**< y-velocity gained when kicked */
+  const float KICKSPEED_Y = -500; /**< y-velocity gained when kicked */
 }
 
 Snail::Snail(const lisp::Lisp& reader)
diff --git a/src/badguy/spidermite.cpp b/src/badguy/spidermite.cpp
index c98598493..41ccb2e34 100644
--- a/src/badguy/spidermite.cpp
+++ b/src/badguy/spidermite.cpp
@@ -23,7 +23,7 @@
 #include "spidermite.hpp"
 
 static const float FLYTIME = 1.2;
-static const float FLYSPEED = 100.0;
+static const float FLYSPEED = -100.0;
 
 SpiderMite::SpiderMite(const lisp::Lisp& reader)
 	: BadGuy(reader, "images/creatures/spidermite/spidermite.sprite")
diff --git a/src/badguy/totem.cpp b/src/badguy/totem.cpp
index 7ec6693cb..825ed8143 100644
--- a/src/badguy/totem.cpp
+++ b/src/badguy/totem.cpp
@@ -24,8 +24,8 @@
 #include "log.hpp"
 
 static const float WALKSPEED = 100;
-static const float JUMP_ON_SPEED_Y = 400;
-static const float JUMP_OFF_SPEED_Y = 500;
+static const float JUMP_ON_SPEED_Y = -400;
+static const float JUMP_OFF_SPEED_Y = -500;
 
 Totem::Totem(const lisp::Lisp& reader)
 	: BadGuy(reader, "images/creatures/totem/totem.sprite")
diff --git a/src/badguy/yeti.cpp b/src/badguy/yeti.cpp
index c8c717dc3..9f6924540 100644
--- a/src/badguy/yeti.cpp
+++ b/src/badguy/yeti.cpp
@@ -32,14 +32,14 @@
 
 namespace {
   const float JUMP_DOWN_VX = 250; /**< horizontal speed while jumping off the dais */
-  const float JUMP_DOWN_VY = 250; /**< vertical speed while jumping off the dais */
+  const float JUMP_DOWN_VY = -250; /**< vertical speed while jumping off the dais */
 
   const float RUN_VX = 350; /**< horizontal speed while running */
 
   const float JUMP_UP_VX = 350; /**< horizontal speed while jumping on the dais */
-  const float JUMP_UP_VY = 800; /**< vertical speed while jumping on the dais */
+  const float JUMP_UP_VY = -800; /**< vertical speed while jumping on the dais */
 
-  const float STOMP_VY = 250; /** vertical speed while stomping on the dais */
+  const float STOMP_VY = -250; /** vertical speed while stomping on the dais */
 
   const float LEFT_STAND_X = 16; /**< x-coordinate of left dais' end position */
   const float RIGHT_STAND_X = 800-60-16; /**< x-coordinate of right dais' end position */ 
diff --git a/src/badguy/zeekling.cpp b/src/badguy/zeekling.cpp
index 65abb0c24..5e30d2052 100644
--- a/src/badguy/zeekling.cpp
+++ b/src/badguy/zeekling.cpp
@@ -98,7 +98,7 @@ Zeekling::onBumpVertical() {
   } else
   if (state == DIVING) {
     state = CLIMBING;
-    physic.set_velocity_y(speed);
+    physic.set_velocity_y(-speed);
     sprite->set_action(dir == LEFT ? "left" : "right");
   } else
   if (state == CLIMBING) {
@@ -168,7 +168,7 @@ Zeekling::active_update(float elapsed_time) {
   if (state == FLYING) {
     if (should_we_dive()) {
       state = DIVING;
-      physic.set_velocity_y(-2*fabsf(physic.get_velocity_x()));
+      physic.set_velocity_y(2*fabsf(physic.get_velocity_x()));
       sprite->set_action(dir == LEFT ? "diving-left" : "diving-right");
     }
     return;
diff --git a/src/object/bullet.cpp b/src/object/bullet.cpp
index 40d9a5e4c..a8b7cef9d 100644
--- a/src/object/bullet.cpp
+++ b/src/object/bullet.cpp
@@ -39,7 +39,7 @@ Bullet::Bullet(const Vector& pos, float xm, int dir, int kind_)
 
   float speed = dir == RIGHT ? BULLET_XM : -BULLET_XM;
   physic.set_velocity_x(speed + xm);
-  physic.set_velocity_y(-BULLET_STARTING_YM);
+  physic.set_velocity_y(BULLET_STARTING_YM);
 
   if (kind == ICE_BULLET) {
     life_count = 6; //ice-bullets get "extra lives" for bumping off walls
@@ -59,7 +59,7 @@ Bullet::update(float elapsed_time)
 {
   if(kind == FIRE_BULLET) {
     // @not completely framerate independant :-/
-    physic.set_velocity_y(physic.get_velocity_y() - 50 * elapsed_time);
+    physic.set_velocity_y(physic.get_velocity_y() + 50 * elapsed_time);
   }
   if(physic.get_velocity_y() > 900)
     physic.set_velocity_y(900);
diff --git a/src/object/falling_coin.cpp b/src/object/falling_coin.cpp
index 4066d2bd3..8e091a5d3 100644
--- a/src/object/falling_coin.cpp
+++ b/src/object/falling_coin.cpp
@@ -29,7 +29,7 @@ FallingCoin::FallingCoin(const Vector& start_position, const int vel_x)
 {
   pos = start_position;
   sprite = sprite_manager->create("images/objects/coin/coin.sprite");
-  physic.set_velocity_y(800);
+  physic.set_velocity_y(-800);
   physic.set_velocity_x(vel_x);
 }
 
diff --git a/src/object/oneup.cpp b/src/object/oneup.cpp
index d449daf76..3b45a63f3 100644
--- a/src/object/oneup.cpp
+++ b/src/object/oneup.cpp
@@ -29,7 +29,7 @@
 OneUp::OneUp(const Vector& pos)
 	: MovingSprite(pos, "images/powerups/1up/1up.sprite", LAYER_FLOATINGOBJECTS, COLGROUP_TOUCHABLE)
 {
-  physic.set_velocity(100, 400);
+  physic.set_velocity(100, -400);
 }
 
 void
diff --git a/src/object/player.cpp b/src/object/player.cpp
index ce9bc9de4..66f4291ab 100644
--- a/src/object/player.cpp
+++ b/src/object/player.cpp
@@ -342,7 +342,7 @@ Player::handle_horizontal_input()
     if (floor_normal.y != 0) {
       if ((floor_normal.x * vx) > 0) {
         // we overdo it a little, just to be on the safe side
-        vy = vx * (floor_normal.x / floor_normal.y) * 2;
+        vy = -vx * (floor_normal.x / floor_normal.y) * 2;
       }
     }
   }
@@ -377,17 +377,17 @@ Player::handle_vertical_input()
   if(controller->pressed(Controller::JUMP) && can_jump && on_ground()) {
     if (duck) { 
       if (physic.get_velocity_x() != 0) // only jump a little bit when running ducked
-        physic.set_velocity_y(300);
+        physic.set_velocity_y(-300);
       else { //do a backflip
         backflipping = true;
-        physic.set_velocity_y(580);
+        physic.set_velocity_y(-580);
         backflip_timer.start(0.15);
       }
     }
     else if (fabs(physic.get_velocity_x()) > MAX_WALK_XM) // jump higher if we are running
-      physic.set_velocity_y(580);
+      physic.set_velocity_y(-580);
     else
-      physic.set_velocity_y(520);
+      physic.set_velocity_y(-520);
     
     //bbox.move(Vector(0, -1));
     jumping = true;
@@ -397,7 +397,7 @@ Player::handle_vertical_input()
     else
       sound_manager->play("sounds/jump.wav");
   } else if(!controller->hold(Controller::JUMP)) { // Let go of jump key
-    if (!backflipping && jumping && physic.get_velocity_y() > 0) {
+    if (!backflipping && jumping && physic.get_velocity_y() < 0) {
       jumping = false;
       physic.set_velocity_y(0);
     }
@@ -430,7 +430,7 @@ Player::handle_vertical_input()
          Vector(base.x + 1, base.y + base.height), false)
        || Sector::current()->trybreakbrick(
          Vector(base.x + base.width - 1, base.y + base.height), false)) {
-      physic.set_velocity_y(2);
+      physic.set_velocity_y(-2);
       butt_jump = true;
     }
     
@@ -564,10 +564,10 @@ Player::handle_input_ghost()
     vx += MAX_RUN_XM * 2; 
   }
   if ((controller->hold(Controller::UP)) || (controller->hold(Controller::JUMP))) {
-    vy += MAX_RUN_XM * 2;
+    vy -= MAX_RUN_XM * 2;
   }
   if (controller->hold(Controller::DOWN)) {
-    vy -= MAX_RUN_XM * 2;
+    vy += MAX_RUN_XM * 2;
   }
   if (controller->hold(Controller::ACTION)) {
     set_ghost_mode(false);
@@ -828,7 +828,7 @@ Player::collision(GameObject& other, const CollisionHit& hit)
     */
     
     if(hit.normal.y < 0) { // landed on floor?
-      if(physic.get_velocity_y() < 0)
+      if(physic.get_velocity_y() > 0)
         physic.set_velocity_y(0);
 
       on_ground_flag = true;
@@ -848,16 +848,16 @@ Player::collision(GameObject& other, const CollisionHit& hit)
       Platform* platform = dynamic_cast<Platform*> (&other);
       if(platform != NULL) {
         if(platform->get_speed().y > 0)
-          physic.set_velocity_y(-platform->get_speed().y);
+          physic.set_velocity_y(platform->get_speed().y);
         //physic.set_velocity_x(platform->get_speed().x);
       }
     } else if(hit.normal.y > 0) { // bumped against the roof
-      physic.set_velocity_y(.1);
+      physic.set_velocity_y(-.1);
 
       // hack platform so that we are not glued to it from below
       Platform* platform = dynamic_cast<Platform*> (&other);
       if(platform != NULL) {
-        physic.set_velocity_y(-platform->get_speed().y);
+        physic.set_velocity_y(platform->get_speed().y);
       }      
     }
     
@@ -951,7 +951,7 @@ Player::kill(bool completely)
     }
     physic.enable_gravity(true);
     physic.set_acceleration(0, 0);
-    physic.set_velocity(0, 700);
+    physic.set_velocity(0, -700);
     player_status->coins -= 25;
     set_bonus(NO_BONUS);
     dying = true;
@@ -1042,9 +1042,9 @@ void
 Player::bounce(BadGuy& )
 {
   if(controller->hold(Controller::JUMP))
-    physic.set_velocity_y(520);
+    physic.set_velocity_y(-520);
   else
-    physic.set_velocity_y(300);
+    physic.set_velocity_y(-300);
 }
 
 //Scripting Functions Below
diff --git a/src/object/scripted_object.cpp b/src/object/scripted_object.cpp
index 69f15ca2a..d525022d2 100644
--- a/src/object/scripted_object.cpp
+++ b/src/object/scripted_object.cpp
@@ -173,7 +173,7 @@ ScriptedObject::collision(GameObject& other, const CollisionHit& hit)
 
   if(other.get_flags() & FLAG_SOLID) {
     if(hit.normal.y < 0) { // landed on floor
-      if(physic.get_velocity_y() < 0)
+      if(physic.get_velocity_y() > 0)
         physic.set_velocity_y(0);
     } else if(hit.normal.y > 0) { // bumped against roof
       physic.set_velocity_y(.1);
diff --git a/src/object/star.cpp b/src/object/star.cpp
index 39724b8d7..e6ef93461 100644
--- a/src/object/star.cpp
+++ b/src/object/star.cpp
@@ -26,9 +26,9 @@
 #include "sprite/sprite_manager.hpp"
 #include "video/drawing_context.hpp"
 
-static const float INITIALJUMP = 400;
+static const float INITIALJUMP = -400;
 static const float SPEED = 150;
-static const float JUMPSPEED = 300;
+static const float JUMPSPEED = -300;
 
 Star::Star(const Vector& pos)
 	: MovingSprite(pos, "images/powerups/star/star.sprite", LAYER_OBJECTS, COLGROUP_MOVING)
diff --git a/src/physic.cpp b/src/physic.cpp
index 753d3cbf6..518ce8349 100644
--- a/src/physic.cpp
+++ b/src/physic.cpp
@@ -47,14 +47,14 @@ Physic::set_velocity_x(float nvx)
 void
 Physic::set_velocity_y(float nvy)
 {
-  vy = -nvy;
+  vy = nvy;
 }
 
 void
 Physic::set_velocity(float nvx, float nvy)
 {
   vx = nvx;
-  vy = -nvy;
+  vy = nvy;
 }
 
 void
@@ -83,13 +83,13 @@ Physic::get_velocity_x() const
 float
 Physic::get_velocity_y() const
 {
-    return -vy;
+    return vy;
 }
 
 Vector
 Physic::get_velocity() const
 {
-  return Vector(vx, -vy);
+  return Vector(vx, vy);
 }
 
 void
@@ -101,14 +101,14 @@ Physic::set_acceleration_x(float nax)
 void
 Physic::set_acceleration_y(float nay)
 {
-  ay = -nay;
+  ay = nay;
 }
 
 void
 Physic::set_acceleration(float nax, float nay)
 {
   ax = nax;
-  ay = -nay;
+  ay = nay;
 }
 
 float
@@ -120,13 +120,13 @@ Physic::get_acceleration_x() const
 float
 Physic::get_acceleration_y() const
 {
-  return -ay;
+  return ay;
 }
 
 Vector
 Physic::get_acceleration() const
 {
-  return Vector(ax, -ay);
+  return Vector(ax, ay);
 }
 
 void