    001    package net.minecraft.client.gui;
    002
    003    import cpw.mods.fml.relauncher.Side;
    004    import cpw.mods.fml.relauncher.SideOnly;
    005    import java.io.ByteArrayOutputStream;
    006    import java.io.DataOutputStream;
    007    import net.minecraft.client.gui.inventory.GuiContainer;
    008    import net.minecraft.client.renderer.RenderHelper;
    009    import net.minecraft.entity.IMerchant;
    010    import net.minecraft.entity.player.InventoryPlayer;
    011    import net.minecraft.inventory.ContainerMerchant;
    012    import net.minecraft.item.ItemStack;
    013    import net.minecraft.network.packet.Packet250CustomPayload;
    014    import net.minecraft.util.StatCollector;
    015    import net.minecraft.village.MerchantRecipe;
    016    import net.minecraft.village.MerchantRecipeList;
    017    import net.minecraft.world.World;
    018    import org.lwjgl.opengl.GL11;
    019    import org.lwjgl.opengl.GL12;
    020
    021    @SideOnly(Side.CLIENT)
    022    public class GuiMerchant extends GuiContainer
    023    {
    024        /** Instance of IMerchant interface. */
    025        private IMerchant theIMerchant;
    026        private GuiButtonMerchant nextRecipeButtonIndex;
    027        private GuiButtonMerchant previousRecipeButtonIndex;
    028        private int currentRecipeIndex = 0;
    029
    030        public GuiMerchant(InventoryPlayer par1InventoryPlayer, IMerchant par2IMerchant, World par3World)
    031        {
    032            super(new ContainerMerchant(par1InventoryPlayer, par2IMerchant, par3World));
    033            this.theIMerchant = par2IMerchant;
    034        }
    035
    036        /**
    037         * Adds the buttons (and other controls) to the screen in question.
    038         */
    039        public void initGui()
    040        {
    041            super.initGui();
    042            int var1 = (this.width - this.xSize) / 2;
    043            int var2 = (this.height - this.ySize) / 2;
    044            this.controlList.add(this.nextRecipeButtonIndex = new GuiButtonMerchant(1, var1 + 120 + 27, var2 + 24 - 1, true));
    045            this.controlList.add(this.previousRecipeButtonIndex = new GuiButtonMerchant(2, var1 + 36 - 19, var2 + 24 - 1, false));
    046            this.nextRecipeButtonIndex.enabled = false;
    047            this.previousRecipeButtonIndex.enabled = false;
    048        }
    049
    050        /**
    051         * Draw the foreground layer for the GuiContainer (everything in front of the items)
    052         */
    053        protected void drawGuiContainerForegroundLayer(int par1, int par2)
    054        {
    055            this.fontRenderer.drawString(StatCollector.translateToLocal("entity.Villager.name"), 56, 6, 4210752);
    056            this.fontRenderer.drawString(StatCollector.translateToLocal("container.inventory"), 8, this.ySize - 96 + 2, 4210752);
    057        }
    058
    059        /**
    060         * Called from the main game loop to update the screen.
    061         */
    062        public void updateScreen()
    063        {
    064            super.updateScreen();
    065            MerchantRecipeList var1 = this.theIMerchant.getRecipes(this.mc.thePlayer);
    066
    067            if (var1 != null)
    068            {
    069                this.nextRecipeButtonIndex.enabled = this.currentRecipeIndex < var1.size() - 1;
    070                this.previousRecipeButtonIndex.enabled = this.currentRecipeIndex > 0;
    071            }
    072        }
    073
    074        /**
    075         * Fired when a control is clicked. This is the equivalent of ActionListener.actionPerformed(ActionEvent e).
    076         */
    077        protected void actionPerformed(GuiButton par1GuiButton)
    078        {
    079            boolean var2 = false;
    080
    081            if (par1GuiButton == this.nextRecipeButtonIndex)
    082            {
    083                ++this.currentRecipeIndex;
    084                var2 = true;
    085            }
    086            else if (par1GuiButton == this.previousRecipeButtonIndex)
    087            {
    088                --this.currentRecipeIndex;
    089                var2 = true;
    090            }
    091
    092            if (var2)
    093            {
    094                ((ContainerMerchant)this.inventorySlots).setCurrentRecipeIndex(this.currentRecipeIndex);
    095                ByteArrayOutputStream var3 = new ByteArrayOutputStream();
    096                DataOutputStream var4 = new DataOutputStream(var3);
    097
    098                try
    099                {
    100                    var4.writeInt(this.currentRecipeIndex);
    101                    this.mc.getSendQueue().addToSendQueue(new Packet250CustomPayload("MC|TrSel", var3.toByteArray()));
    102                }
    103                catch (Exception var6)
    104                {
    105                    var6.printStackTrace();
    106                }
    107            }
    108        }
    109
    110        /**
    111         * Draw the background layer for the GuiContainer (everything behind the items)
    112         */
    113        protected void drawGuiContainerBackgroundLayer(float par1, int par2, int par3)
    114        {
    115            int var4 = this.mc.renderEngine.getTexture("/gui/trading.png");
    116            GL11.glColor4f(1.0F, 1.0F, 1.0F, 1.0F);
    117            this.mc.renderEngine.bindTexture(var4);
    118            int var5 = (this.width - this.xSize) / 2;
    119            int var6 = (this.height - this.ySize) / 2;
    120            this.drawTexturedModalRect(var5, var6, 0, 0, this.xSize, this.ySize);
    121            MerchantRecipeList var7 = this.theIMerchant.getRecipes(this.mc.thePlayer);
    122
    123            if (var7 != null && !var7.isEmpty())
    124            {
    125                int var8 = this.currentRecipeIndex;
    126                MerchantRecipe var9 = (MerchantRecipe)var7.get(var8);
    127
    128                if (var9.func_82784_g())
    129                {
    130                    GL11.glBindTexture(GL11.GL_TEXTURE_2D, this.mc.renderEngine.getTexture("/gui/trading.png"));
    131                    GL11.glColor4f(1.0F, 1.0F, 1.0F, 1.0F);
    132                    GL11.glDisable(GL11.GL_LIGHTING);
    133                    this.drawTexturedModalRect(this.guiLeft + 83, this.guiTop + 21, 212, 0, 28, 21);
    134                    this.drawTexturedModalRect(this.guiLeft + 83, this.guiTop + 51, 212, 0, 28, 21);
    135                }
    136            }
    137        }
    138
    139        /**
    140         * Draws the screen and all the components in it.
    141         */
    142        public void drawScreen(int par1, int par2, float par3)
    143        {
    144            super.drawScreen(par1, par2, par3);
    145            MerchantRecipeList var4 = this.theIMerchant.getRecipes(this.mc.thePlayer);
    146
    147            if (var4 != null && !var4.isEmpty())
    148            {
    149                int var5 = (this.width - this.xSize) / 2;
    150                int var6 = (this.height - this.ySize) / 2;
    151                int var7 = this.currentRecipeIndex;
    152                MerchantRecipe var8 = (MerchantRecipe)var4.get(var7);
    153                GL11.glPushMatrix();
    154                ItemStack var9 = var8.getItemToBuy();
    155                ItemStack var10 = var8.getSecondItemToBuy();
    156                ItemStack var11 = var8.getItemToSell();
    157                RenderHelper.enableGUIStandardItemLighting();
    158                GL11.glDisable(GL11.GL_LIGHTING);
    159                GL11.glEnable(GL12.GL_RESCALE_NORMAL);
    160                GL11.glEnable(GL11.GL_COLOR_MATERIAL);
    161                GL11.glEnable(GL11.GL_LIGHTING);
    162                itemRenderer.zLevel = 100.0F;
    163                itemRenderer.renderItemAndEffectIntoGUI(this.fontRenderer, this.mc.renderEngine, var9, var5 + 36, var6 + 24);
    164                itemRenderer.renderItemOverlayIntoGUI(this.fontRenderer, this.mc.renderEngine, var9, var5 + 36, var6 + 24);
    165
    166                if (var10 != null)
    167                {
    168                    itemRenderer.renderItemAndEffectIntoGUI(this.fontRenderer, this.mc.renderEngine, var10, var5 + 62, var6 + 24);
    169                    itemRenderer.renderItemOverlayIntoGUI(this.fontRenderer, this.mc.renderEngine, var10, var5 + 62, var6 + 24);
    170                }
    171
    172                itemRenderer.renderItemAndEffectIntoGUI(this.fontRenderer, this.mc.renderEngine, var11, var5 + 120, var6 + 24);
    173                itemRenderer.renderItemOverlayIntoGUI(this.fontRenderer, this.mc.renderEngine, var11, var5 + 120, var6 + 24);
    174                itemRenderer.zLevel = 0.0F;
    175                GL11.glDisable(GL11.GL_LIGHTING);
    176
    177                if (this.func_74188_c(36, 24, 16, 16, par1, par2))
    178                {
    179                    this.drawItemStackTooltip(var9, par1, par2);
    180                }
    181                else if (var10 != null && this.func_74188_c(62, 24, 16, 16, par1, par2))
    182                {
    183                    this.drawItemStackTooltip(var10, par1, par2);
    184                }
    185                else if (this.func_74188_c(120, 24, 16, 16, par1, par2))
    186                {
    187                    this.drawItemStackTooltip(var11, par1, par2);
    188                }
    189
    190                GL11.glPopMatrix();
    191                GL11.glEnable(GL11.GL_LIGHTING);
    192                GL11.glEnable(GL11.GL_DEPTH_TEST);
    193                RenderHelper.enableStandardItemLighting();
    194            }
    195        }
    196
    197        /**
    198         * Gets the Instance of IMerchant interface.
    199         */
    200        public IMerchant getIMerchant()
    201        {
    202            return this.theIMerchant;
    203        }
    204    }