Sign in to follow this  

SDL_Collision Issue

This topic is 2033 days old which is more than the 365 day threshold we allow for new replies. Please post a new topic.

If you intended to correct an error in the post then please contact us.

Recommended Posts

I'm having a bit of trouble with collision in SDL. I've tried Lazy Foo's code and SDL_Collision librarie's. My issue is that when my character moves it detects that he is colliding with all of the tiles.

Player.h
[source lang="cpp"]#pragma once
#ifndef PLAYER_H
#define PLAYER_H

#include "SDL_collide.h"
#include "Graphics_Core.h"
#include "Tile_Manager.h"
#include "Debug_Overlay.h"


namespace Roger
{
const int ROGER_STANDING = 0;
const int ROGER_RUN_LEFT_1 = 1;
const int ROGER_RUN_LEFT_2 = 2;
const int ROGER_RUN_LEFT_3 = 3;
const int ROGER_RUN_RIGHT_1 = 4;
const int ROGER_RUN_RIGHT_2 = 5;
const int ROGER_RUN_RIGHT_3 = 6;
class Player
{
public:
Player(int x, int y);
void Move_Left(Tile *tiles[]);
void Move_Right(Tile *tiles[]);
void Jump(Tile *tiles[]);
void Fall(Tile *tiles[]);
void Lose_Velocity();
void Draw();
int Cur_x;
int Cur_y;

private:
double max_vel;
double cur_vel;
SDL_Surface* Run[5];
SDL_Surface* Roger_Sheet;
SDL_Rect m_BoundBox;
SDL_Rect m_ClippingRect[7];
GraphicManager m_Manager;
Debug_Overlay m_DOverlay;
int anim_number;

};
extern Player CRoger;
}

#endif // PLAYER_H[/source]


Player.cpp

[source lang="cpp"]#include "Player.h"
#include "System_Core.h"



namespace Roger
{
Player CRoger(450,200);
Player::Player(int x, int y)
{
max_vel = 15.f;
cur_vel = 0.f;
Cur_x = x;
Cur_y = y;
this->anim_number = 0;
Roger_Sheet = m_Manager.VLoad_Image("Textures\\Roger\\Roger.bmp");
m_BoundBox.x = x;
m_BoundBox.y = y;
m_BoundBox.w = 15;
m_BoundBox.h = 29;

//Standing Anim
m_ClippingRect[ROGER_STANDING].x = 19;
m_ClippingRect[ROGER_STANDING].y = 22;


//Running Anims
m_ClippingRect[ROGER_RUN_LEFT_1].x = 52;
m_ClippingRect[ROGER_RUN_LEFT_1].y = 1;

m_ClippingRect[ROGER_RUN_LEFT_2].x = 104;
m_ClippingRect[ROGER_RUN_LEFT_2].y = 1;

m_ClippingRect[ROGER_RUN_LEFT_3].x = 156;
m_ClippingRect[ROGER_RUN_LEFT_3].y = 1;


m_ClippingRect[ROGER_RUN_RIGHT_1].x = 1;
m_ClippingRect[ROGER_RUN_RIGHT_1].y = 52;

m_ClippingRect[ROGER_RUN_RIGHT_2].x = 52;
m_ClippingRect[ROGER_RUN_RIGHT_2].y = 52;

m_ClippingRect[ROGER_RUN_RIGHT_3].x = 104;
m_ClippingRect[ROGER_RUN_RIGHT_3].y = 52;


for(int i = 0; i <= 6; i++)
{
m_ClippingRect[i].h = 29;
m_ClippingRect[i].w = 15;
}
}

void Player::Fall(Tile *tiles[])
{
}

void Player::Move_Left(Tile *tiles[])
{
bool Cant_Move = false;
if(cur_vel < max_vel)
{
cur_vel += 1.f;
}

if(cur_vel >= max_vel)
{
cur_vel = 15.f;
}

for(int i = 0; i < TILE_AMOUNT; i++)
{
SDL_Rect t_BoundBox = tiles[i]->Get_Boundbox();
int t_Type = tiles[i]->Get_Ttype();
if(SDL_CollideBoundingBox(m_BoundBox,t_BoundBox) == 1)
{

}
else if(SDL_CollideBoundingBox(m_BoundBox,t_BoundBox) == 0 && t_Type != 1)
{
m_DOverlay.Draw_Box(m_Surface,m_BoundBox.x,m_BoundBox.y); //Debug, checking where collisions occur
SDL_Flip(m_Surface);
Cant_Move = true;
}

if(Cant_Move == false)
{
Cur_x += cur_vel;
}
}
}

void Player::Move_Right(Tile *tiles[])
{
bool Cant_Move = false;
if(cur_vel < max_vel)
{
cur_vel += 1.f;
}

if(cur_vel >= max_vel)
{
cur_vel = 15.f;
}

for(int i = 0; i < TILE_AMOUNT; i++)
{
SDL_Rect t_BoundBox = tiles[i]->Get_Boundbox();
int t_Type = tiles[i]->Get_Ttype();

if(SDL_CollideBoundingBox(m_BoundBox,t_BoundBox) == 1)
{

}
else if(SDL_CollideBoundingBox(m_BoundBox,t_BoundBox) == 0 && t_Type != 1)
{
m_DOverlay.Draw_Box(m_Surface,m_BoundBox.x,m_BoundBox.y); //Debug, checking where collisions occur
SDL_Flip(m_Surface);
Cant_Move = true;
}

if(Cant_Move == false)
{
Cur_x -= cur_vel;
}
}
}

void Player::Lose_Velocity()
{
cur_vel--;

if(cur_vel <= 0)
cur_vel = 0;
}


void Player::Draw()
{
m_Manager.VDraw(Cur_x,Cur_y,Roger_Sheet,m_Surface,m_ClippingRect[anim_number]);
}
}[/source]

The character is positioned at X:450 and Y:200, his is 22px hight and 19px wide. My issue is that he is colliding with nearly every single tile despite him not being remotely close to them.

Share this post


Link to post
Share on other sites

This topic is 2033 days old which is more than the 365 day threshold we allow for new replies. Please post a new topic.

If you intended to correct an error in the post then please contact us.

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now

Sign in to follow this