BorlandTalk.com Borland discussion newsgroups   Archives   FAQ   Search   Memberlist   Usergroups   Register   Profile   Log in to check your private messages   Log in  simple graphical collisions          BorlandTalk.com Forum Index -> Delphi Graphics View previous topic :: View next topic   Author Message C. Johansen Guest Posted: Wed Aug 03, 2005 10:31 am    Post subject: simple graphical collisions Hi, I've been programming in delphi for several months now, my background is c so don't be too harsh. I'm currently trying to write a simple 2D game and was wondering if delphi has any libraries to do geometry calculations such as simple collisions such as those between 2 moving space ships or a fire-ball. -Cory Back to top C. Johansen Guest Posted: Wed Aug 03, 2005 12:54 pm    Post subject: Re: simple graphical collisions Hi Miklos, I'm also after routines that will give the bounding polygon of a set of points. does delphi provide that or do I have to look for other 3rd party libraries do that too? -Cory "Miklós Kiss" <kissmiklos (AT) freemail (DOT) hu> wrote: Quote: Hi, [...] and was wondering if delphi has any libraries to do geometry calculations such as simple collisions such as those between 2 moving space ships or a fire-ball. Delphi does not have such libraries but You might find 3rd prty tools to do that. I would give DelphiX a try too: it has sprites and probably supports sprite-sprite collision checking. I never used sprites with DelphiX so I don't how to do that. Have a look at the expamles. Regards, MikKi Back to top dd Guest Posted: Wed Aug 03, 2005 1:12 pm    Post subject: Re: simple graphical collisions C. Johansen wrote: Quote: Hi, I've been programming in delphi for several months now, my background is c so don't be too harsh. I'm currently trying to write a simple 2D game and was wondering if delphi has any libraries to do geometry calculations such as simple collisions such as those between 2 moving space ships or a fire-ball. -Cory You can use these win32 functions IntersectRect PtInRect PtInRegion RectInRegion Look in the win32 help for "Rectangle Functions" "Region Functions" to get more details. Back to top C. Johansen Guest Posted: Wed Aug 03, 2005 1:37 pm    Post subject: Re: simple graphical collisions Hi dd, I'm hoping to be able to compile the code with Kylix and don't I think the routines you provided are portable because they are native to the windows platform. Do you know of any portable geometry libraries written in delphi that don't rely win32 calls? -Cory dd <dd (AT) bogus (DOT) com> wrote: Quote: You can use these win32 functions IntersectRect PtInRect PtInRegion RectInRegion Look in the win32 help for "Rectangle Functions" "Region Functions" to get more details. Back to top Jeremy Darling Guest Posted: Wed Aug 03, 2005 3:48 pm    Post subject: Re: simple graphical collisions Since you want to go cross platform, I would suggest trying out GLScene (http://www.glscene.org) its an OpenGL wrapper for Delphi. You could easily do 2D or 3D in it and it gives you many advanced functions that arn't implemented in other component sets. IE: Collision testing in about 5 different types. Jeremy "C. Johansen" <cj (AT) mikesnuts (DOT) com> wrote Quote: Hi, I've been programming in delphi for several months now, my background is c so don't be too harsh. I'm currently trying to write a simple 2D game and was wondering if delphi has any libraries to do geometry calculations such as simple collisions such as those between 2 moving space ships or a fire-ball. -Cory Back to top Nicholas Sherlock Guest Posted: Wed Aug 03, 2005 7:36 pm    Post subject: Re: simple graphical collisions C. Johansen wrote: Quote: Hi, I've been programming in delphi for several months now, my background is c so don't be too harsh. I'm currently trying to write a simple 2D game and was wondering if delphi has any libraries to do geometry calculations such as simple collisions such as those between 2 moving space ships or a fire-ball. FastGeo. http://www.partow.net/projects/fastgeo/ Cheers, Nicholas Sherlock Back to top Arash Partow Guest Posted: Wed Aug 03, 2005 7:37 pm    Post subject: Re: simple graphical collisions 1.) With your moving objects you should generalize them with axis aligned bounding boxes and setup your collision detection system based on the bounding boxes. to further reduce the complexity of collision detection (if there will be many objects on the board) is to implement a spatial container, and hence only test for collisions between object that are "near" each other. 2.) The bounding polygon of n points is commonly known as the "convex hull" of the points, many algorithms exist today for calculating the convex hull of a set of points, ie: graham scan, jarvis march, gift wrapper etc... As far as a library to do these things you can try fastgeo, its a computational geometry library written in object pascal (aka Delphi language) url: http://fastgeo.partow.net The library is portable on any architecture that supports minimal Borland object pascal language syntax. It compiles with Delphi, Kylix and FreePascal, and has only one dependency namely the Math unit (sin, cos and arctan routines). Arash Partow __________________________________________________ Be one who knows what they don't know, Instead of being one who knows not what they don't know, Thinking they know everything about all things. http://www.partow.net "C. Johansen" <cj (AT) mikesnuts (DOT) com> wrote: Quote: Hi, I've been programming in delphi for several months now, my background is c so don't be too harsh. I'm currently trying to write a simple 2D game and was wondering if delphi has any libraries to do geometry calculations such as simple collisions such as those between 2 moving space ships or a fire-ball. -Cory Back to top Display posts from previous: All Posts1 Day7 Days2 Weeks1 Month3 Months6 Months1 Year Oldest FirstNewest First         BorlandTalk.com Forum Index -> Delphi Graphics All times are GMT Page 1 of 1   Jump to: Select a forum C++ Builder Newsgroups----------------C++ BuilderC++ Builder (ActiveX)C++ Builder (Announcements)C++ Builder (Command Line Tools)C++ Builder DatabasesC++ Builder Databases (ADO)C++ Builder Databases (Desktop)C++ Builder Databases (InterBase Express)C++ Builder Databases (Multi-Tier)C++ Builder Databases (SQL Servers)C++ Builder (Graphics)C++ Builder (IDE)C++ Builder (Internet)C++ Builder (Internet Socket)C++ Builder (Internet Web)C++ Builder (Jobs)C++ Builder (Language)C++ Builder (Language C++)C++ Builder (Compatibility with MFC)C++ Builder (Native API)C++ Builder (Non-Technical)C++ Builder (Students)C++ Builder (Third Party Tools)C++ Builder (Upgrade)C++ Builder (VCL)C++ Builder (VCL Components Usage)C++ Builder (VCL Components Development)C++ Builder (VCL Usage)C++ Builder (WinAPI)C++ Builder Installation Delphi Newsgroups----------------Delphi (General)Delphi ActiveX Controls UsageDelphi ActiveX Controls DevelopmentDelphi As400Delphi DatabasesDelphi Databases (ADO)Delphi Databases (dbExpress)Delphi Databases (Desktop)Delphi Databases (InterBase Express)Delphi Databases (Multi-Tier)Delphi Databases (SQL Servers)Delphi DeploymentDelphi GraphicsDelphi IDEDelphi InternationalizationDelphi InternetDelphi Internet Isapi-WebBrokerDelphi Internet WebSnapDelphi Internet WinsockDelphi JobsDelphi Language BASMDelphi Language ObjectPascalDelphi Model Driven Architecture (General)Delphi Model Driven Architecture (Third Party)Delphi MultimediaDelphi Native APIDelphi Non-TechnicalDelphi ObjectPascalDelphi OLE AutomationDelphi OO designDelphi OpenToolsAPIDelphi Reporting-ChartingDelphi RTLDelphi StudentsDelphi TeamSourceDelphi Thirdparty ToolsDelphi Thirdparty Tools (General)Delphi Thirdparty Tools (IntraWeb)Delphi Thirdparty Tools (RaveReports)Delphi UpgradeDelphi VCLDelphi VCL ComponentsDelphi VCL Components UsingDelphi VCL Components WritingDelphi WebServices SOAPDelphi WinAPIDelphi XMLDelphi Installationcomp.lang.pascal.delphi.components.misccomp.lang.pascal.delphi.components.usagecomp.lang.pascal.delphi.components.writingcomp.lang.pascal.delphi.databasescomp.lang.pascal.delphi.misccomp.sources.delphi JBuilder Newsgroups----------------JBuilderJBuilder AnnouncementsJBuilder Applet IssuesJBuilder As400JBuilder CompilerJBuilder CORBA/RMIJBuilder DatabasesJBuilder DB SwingJBuilder DebuggerJBuilder DeploymentJBuilder DocumentationJBuilder EnterpriseJBuilder HandheldJBuilder IDEJBuilder JavaJBuilder JavaAPIJBuilder Java LanguageJBuilder Java SwingJBuilder Java BeansJBuilder Java Beans UsageJBuilder Java Beans DevelopmentJBuilder JBCLJBuilder JDataStoreJBuilder JobsJBuilder LinuxJBuilder MacintoshJBuilder & MobileSetJBuilder MultiLingual AppsJBuilder Non-TechnicalJBuilder OpenToolsJBuilder Servlets (JSP)JBuilder StudentsJBuilder Team DevelopmentJBuilder Thirdparty ToolsJBuilder UpgradeJBuilder Installation InterBase Newsgroups----------------InterBaseInterBase Bug DiscussionInterBase GeneralInterBase IBConsoleInterBase OpenSourceInterBase ReplicationInterBase SQLInterBase ThirdpartyInterBase Installation Miscellaneous Borland Newsgroups----------------AppCenterAppServerEnteraVisiBroker  You cannot post new topics in this forum You cannot reply to topics in this forum You cannot edit your posts in this forum You cannot delete your posts in this forum You cannot vote in polls in this forum Powered by phpBB © 2001, 2006 phpBB Group SEO toolkit © 2004-2006 webmedic.