怎么用Matlab制作黄金矿工小游戏

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效果

步骤

图片准备

本文所使用图片在这

背景构建

function goldMinerMainfig=figure('units','pixels','position',[50 100 750 500],...                       'Numbertitle','off','menubar','none','resize','off',...                       'name','goldMiner');axes('parent',Mainfig,'position',[0 0 1 1],...   'XLim', [0 750],...   'YLim', [0 500],...   'NextPlot','add',...   'layer','bottom',...   'Visible','on',...   'YDir','reverse',...   'XTick',[], ...   'YTick',[]);bkgPic=imread('.\pic\bkg.png');image([0,750],[0,500],bkgPic)[manPic,~,manAlp]=imread('.\pic\man.png');image([400-60,400+60],[49.5-45,49.5+45],manPic,'AlphaData',manAlp)

绘制爪子

由于爪子要不断调整角度因此用surface格式绘制，我们需要将爪子图片矩阵范围调整至[0，1]，并将透明处数值调成nan

[clawPic,~,clawAlp]=imread('.\Pic\claw.png');clawPic=double(clawPic)./255;clawPicR=clawPic(:,:,1);clawPicG=clawPic(:,:,2);clawPicB=clawPic(:,:,3);clawPicR(clawAlp<1)=nan;clawPicG(clawAlp<1)=nan;clawPicB(clawAlp<1)=nan;clawPic(:,:,1)=clawPicR;clawPic(:,:,2)=clawPicG;clawPic(:,:,3)=clawPicB;clawPos=[380,75];ropePos=[380,75];[xgrid,ygrid]=meshgrid((1:size(clawAlp,2))./2,(1:size(clawAlp,1))./2);xgrid=xgrid-size(clawAlp,2)/4;thetaList=linspace(-2*pi/5,2*pi/5,50);thetaIndex=1;theta=thetaList(thetaIndex);%当前爪子转动角度v=0;%爪子下移速度dir=1;%1或-1爪子转动方向grabbing=false;%是否正在抓取石块cost=cos(theta);sint=sin(theta);rotateX=cost.*xgrid+sint.*ygrid;rotateY=cost.*ygrid-sint.*xgrid;drawClawHdl=surface(rotateX+clawPos(1),rotateY+clawPos(2),...            zeros(size(clawAlp)),clawPic,...            'EdgeColor','none');drawLineHdl=plot([clawPos(1),ropePos(1)],[clawPos(2),ropePos(2)],'k','LineWidth',2);

让爪子转起来

爪子旋转就是单纯的使用旋转矩阵：

fps=20;game=timer('ExecutionMode', 'FixedRate', 'Period',1/fps, 'TimerFcn', @minergame);start(game)    function minergame(~,~)        if ~grabbing            switch 1                case thetaIndex==1,dir=1;                case thetaIndex==50,dir=-1;            end            thetaIndex=thetaIndex+dir;            theta=thetaList(thetaIndex);            cost=cos(theta);            sint=sin(theta);            rotateX=cost.*xgrid+sint.*ygrid;            rotateY=cost.*ygrid-sint.*xgrid;        else        end    end

绘制石块

stoneName={'gold','gold','stone1','stone2','diamond'};stonePic{length(stoneName)}=[];stoneAlp{length(stoneName)}=[];for i=1:length(stoneName)    [C,~,Alp]=imread(['.\pic\',stoneName{i},'.png']);    stonePic{i}=C;    stoneAlp{i}=Alp;endstoneV=[-2,-3,-3,-3,-5];%拿起石头后爪子移动速度stonePrice=[800,500,200,100,1000];stoneSize=[50,50;30,30;24,20;15,12;8,8];stonePos=[200,300;400,350;500,200;50,240;50,300;          700,420;170,180];stoneType=[1,2,3,4,5,1,2];stoneTag=1:length(stoneType);stoneXrange=[stonePos(:,1)-stoneSize(stoneType',1),stonePos(:,1)+stoneSize(stoneType',1)];stoneYrange=[stonePos(:,2)-stoneSize(stoneType',2),stonePos(:,2)+stoneSize(stoneType',2)];for i=1:length(stoneTag)    drawStone(stonePos(i,:),stoneType(i),stoneTag(i))   end    function drawStone(pos,i,j)        image([-stoneSize(i,1),stoneSize(i,1)]+pos(1),...              [-stoneSize(i,2),stoneSize(i,2)]+pos(2),...              stonePic{i},...              'AlphaData',stoneAlp{i},...              'UserData',j)      end

点击下箭头移动爪子

set(gcf, 'KeyPressFcn', @key)        function key(~,event)        switch event.Key            case 'downarrow'                grabbing=true;v=4;        end    endfunction minergame(~,~)        if ~grabbing            %这里是让爪子转动的一堆代码            %。。。。。。。。。。。。。            %。。。。。。。。。。。。。        else            cost=cos(theta);            sint=sin(theta);            clawPos=clawPos+[sint,cost].*v;        end        set(drawClawHdl,'XData',rotateX+clawPos(1),'YData',rotateY+clawPos(2));        set(drawLineHdl,'XData',[clawPos(1),ropePos(1)],'YData',[clawPos(2),ropePos(2)]);    end

爪子与石头和边缘碰触判断

function n=touchThing(clawPos)        n=0;        if clawPos(1)<20||clawPos(1)>730||clawPos(2)>480            n=-1;             end        flagX=clawPos(1)>=stoneXrange(:,1)&clawPos(1)<=stoneXrange(:,2);        flagY=clawPos(2)>=stoneYrange(:,1)&clawPos(2)<=stoneYrange(:,2);        flagXY=flagX&flagY;        if any(flagXY)            n=find(flagXY);        end    end

抓取石块和显示金钱

holdOnType=0;drawHoldOnHdl=image([0,1],[0,1],ones(1,1),'AlphaData',zeros(1,1));text(10,40,'Money:','FontSize',20,'Color',[1 1 1],'FontName','Cambria','FontWeight','bold')money=0;moneyStrHdl=text(110,40,'$0','FontSize',20,'Color',[0.5137 0.7882 0.2157],'FontName','Cambria','FontWeight','bold');            function minergame(~,~)        if ~grabbing            switch 1                case thetaIndex==1,dir=1;                case thetaIndex==50,dir=-1;            end            thetaIndex=thetaIndex+dir;            theta=thetaList(thetaIndex);            cost=cos(theta);            sint=sin(theta);            rotateX=cost.*xgrid+sint.*ygrid;            rotateY=cost.*ygrid-sint.*xgrid;        else            cost=cos(theta);            sint=sin(theta);            clawPos=clawPos+[sint,cost].*v;                        n=touchThing(clawPos+5.*[sint,cost]);            if n==-1                v=-abs(v);            elseif n>0                delete(findobj('UserData',stoneTag(n)));                v=stoneV(stoneType(n));                holdOnType=stoneType(n);                stonePos(n,:)=[];                stoneType(n)=[];                stoneTag(n)=[];                stoneXrange(n,:)=[];                stoneYrange(n,:)=[];                set(drawHoldOnHdl,...                    'XData',[-stoneSize(holdOnType,1),stoneSize(holdOnType,1)]+clawPos(1)+norm(stoneSize(holdOnType,:))*sint,...                    'YData',[-stoneSize(holdOnType,2),stoneSize(holdOnType,2)]+clawPos(2)+norm(stoneSize(holdOnType,:))*cost,...                    'CData',stonePic{holdOnType},'AlphaData',stoneAlp{holdOnType});            end                          if clawPos(2)<=ropePos(2)                clawPos=ropePos;                grabbing=false;                if holdOnType>0                    money=money+stonePrice(holdOnType);                    set(moneyStrHdl,'String',['$',num2str(money)])                end                holdOnType=0;                set(drawHoldOnHdl,'XData',[0,1],...                                  'YData',[0,1],...                                  'CData',ones(1,1),...                                  'AlphaData',zeros(1,1));                              end            if holdOnType~=0                set(drawHoldOnHdl,...                    'XData',[-stoneSize(holdOnType,1),stoneSize(holdOnType,1)]+clawPos(1)+norm(stoneSize(holdOnType,:))*sint,...                    'YData',[-stoneSize(holdOnType,2),stoneSize(holdOnType,2)]+clawPos(2)+norm(stoneSize(holdOnType,:))*cost);            end        end                        set(drawClawHdl,'XData',rotateX+clawPos(1),'YData',rotateY+clawPos(2));        set(drawLineHdl,'XData',[clawPos(1),ropePos(1)],'YData',[clawPos(2),ropePos(2)]);    end

完整代码

function goldMinerMainfig=figure('units','pixels','position',[50 100 750 500],...                       'Numbertitle','off','menubar','none','resize','off',...                       'name','goldMiner');axes('parent',Mainfig,'position',[0 0 1 1],...   'XLim', [0 750],...   'YLim', [0 500],...   'NextPlot','add',...   'layer','bottom',...   'Visible','on',...   'YDir','reverse',...   'XTick',[], ...   'YTick',[]);bkgPic=imread('.\pic\bkg.png');image([0,750],[0,500],bkgPic)[manPic,~,manAlp]=imread('.\pic\man.png');image([400-60,400+60],[49.5-45,49.5+45],manPic,'AlphaData',manAlp)[clawPic,~,clawAlp]=imread('.\Pic\claw.png');clawPic=double(clawPic)./255;clawPicR=clawPic(:,:,1);clawPicG=clawPic(:,:,2);clawPicB=clawPic(:,:,3);clawPicR(clawAlp<1)=nan;clawPicG(clawAlp<1)=nan;clawPicB(clawAlp<1)=nan;clawPic(:,:,1)=clawPicR;clawPic(:,:,2)=clawPicG;clawPic(:,:,3)=clawPicB;clawPos=[380,75];ropePos=[380,75];[xgrid,ygrid]=meshgrid((1:size(clawAlp,2))./2,(1:size(clawAlp,1))./2);xgrid=xgrid-size(clawAlp,2)/4;thetaList=linspace(-2*pi/5,2*pi/5,50);thetaIndex=1;theta=thetaList(thetaIndex);v=0;dir=1;grabbing=false;cost=cos(theta);sint=sin(theta);rotateX=cost.*xgrid+sint.*ygrid;rotateY=cost.*ygrid-sint.*xgrid;drawClawHdl=surface(rotateX+clawPos(1),rotateY+clawPos(2),...            zeros(size(clawAlp)),clawPic,...            'EdgeColor','none');drawLineHdl=plot([clawPos(1),ropePos(1)],[clawPos(2),ropePos(2)],'k','LineWidth',2);%stone part======================================================stoneName={'gold','gold','stone1','stone2','diamond'};stonePic{length(stoneName)}=[];stoneAlp{length(stoneName)}=[];for i=1:length(stoneName)    [C,~,Alp]=imread(['.\pic\',stoneName{i},'.png']);    stonePic{i}=C;    stoneAlp{i}=Alp;endstoneV=[-2,-3,-3,-3,-5];stonePrice=[800,500,200,100,1000];stoneSize=[50,50;30,30;24,20;15,12;8,8];stonePos=[200,300;400,350;500,200;50,240;50,300;          700,420;170,180];stoneType=[1,2,3,4,5,1,2];stoneTag=1:length(stoneType);stoneXrange=[stonePos(:,1)-stoneSize(stoneType',1),stonePos(:,1)+stoneSize(stoneType',1)];stoneYrange=[stonePos(:,2)-stoneSize(stoneType',2),stonePos(:,2)+stoneSize(stoneType',2)];for i=1:length(stoneTag)    drawStone(stonePos(i,:),stoneType(i),stoneTag(i))   end    function drawStone(pos,i,j)        image([-stoneSize(i,1),stoneSize(i,1)]+pos(1),...              [-stoneSize(i,2),stoneSize(i,2)]+pos(2),...              stonePic{i},...              'AlphaData',stoneAlp{i},...              'UserData',j)      endholdOnType=0;drawHoldOnHdl=image([0,1],[0,1],ones(1,1),'AlphaData',zeros(1,1));text(10,40,'Money:','FontSize',20,'Color',[1 1 1],'FontName','Cambria','FontWeight','bold')money=0;moneyStrHdl=text(110,40,'$0','FontSize',20,'Color',[0.5137 0.7882 0.2157],'FontName','Cambria','FontWeight','bold');%==========================================================================    set(gcf, 'KeyPressFcn', @key)fps=20;game=timer('ExecutionMode', 'FixedRate', 'Period',1/fps, 'TimerFcn', @minergame);start(game)    function minergame(~,~)        if ~grabbing            switch 1                case thetaIndex==1,dir=1;                case thetaIndex==50,dir=-1;            end            thetaIndex=thetaIndex+dir;            theta=thetaList(thetaIndex);            cost=cos(theta);            sint=sin(theta);            rotateX=cost.*xgrid+sint.*ygrid;            rotateY=cost.*ygrid-sint.*xgrid;        else            cost=cos(theta);            sint=sin(theta);            clawPos=clawPos+[sint,cost].*v;                        n=touchThing(clawPos+5.*[sint,cost]);            if n==-1                v=-abs(v);            elseif n>0                delete(findobj('UserData',stoneTag(n)));                v=stoneV(stoneType(n));                holdOnType=stoneType(n);                stonePos(n,:)=[];                stoneType(n)=[];                stoneTag(n)=[];                stoneXrange(n,:)=[];                stoneYrange(n,:)=[];                set(drawHoldOnHdl,...                    'XData',[-stoneSize(holdOnType,1),stoneSize(holdOnType,1)]+clawPos(1)+norm(stoneSize(holdOnType,:))*sint,...                    'YData',[-stoneSize(holdOnType,2),stoneSize(holdOnType,2)]+clawPos(2)+norm(stoneSize(holdOnType,:))*cost,...                    'CData',stonePic{holdOnType},'AlphaData',stoneAlp{holdOnType});            end                          if clawPos(2)<=ropePos(2)                clawPos=ropePos;                grabbing=false;                if holdOnType>0                    money=money+stonePrice(holdOnType);                    set(moneyStrHdl,'String',['$',num2str(money)])                end                holdOnType=0;                set(drawHoldOnHdl,'XData',[0,1],...                                  'YData',[0,1],...                                  'CData',ones(1,1),...                                  'AlphaData',zeros(1,1));                              end            if holdOnType~=0                set(drawHoldOnHdl,...                    'XData',[-stoneSize(holdOnType,1),stoneSize(holdOnType,1)]+clawPos(1)+norm(stoneSize(holdOnType,:))*sint,...                    'YData',[-stoneSize(holdOnType,2),stoneSize(holdOnType,2)]+clawPos(2)+norm(stoneSize(holdOnType,:))*cost);            end        end                        set(drawClawHdl,'XData',rotateX+clawPos(1),'YData',rotateY+clawPos(2));        set(drawLineHdl,'XData',[clawPos(1),ropePos(1)],'YData',[clawPos(2),ropePos(2)]);    end    function n=touchThing(clawPos)        n=0;        if clawPos(1)<20||clawPos(1)>730||clawPos(2)>480            n=-1;             end        flagX=clawPos(1)>=stoneXrange(:,1)&clawPos(1)<=stoneXrange(:,2);        flagY=clawPos(2)>=stoneYrange(:,1)&clawPos(2)<=stoneYrange(:,2);        flagXY=flagX&flagY;        if any(flagXY)            n=find(flagXY);        end    end    function key(~,event)        switch event.Key            case 'downarrow'                grabbing=true;v=4;        end    endend

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